Relevant bibliographies by topics / Curing Concrete

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Curing Concrete'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "Curing Concrete"

1

He, Zhi Min, and Jun Zhe Liu. "Effect of Steam Curing on Water Sorptivity of Concrete." Key Engineering Materials 477 (April 2011): 263–67. http://dx.doi.org/10.4028/www.scientific.net/kem.477.263.

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This paper carried out experiments to investigate the change of water absorption gradient of standard curing concretes and steam-cured concretes cured at 60°C. The effect of steam curing on concretes water absorption was evaluated, and the corresponding mechanism was also discussed. Results indicate that the change of water absorption gradient of standard curing concretes is non-significant with the change of the specimen height; Steam curing has exacerbated the inhomogeneity between the top surface and interior surface of concretes. It is observed that noticeable gradient difference in aborption characteristics between top, the second (1cm below top surface) and the third (3cm below top surface) surfaces of samples. Top surface absorption capacity has been the highest, and the second surfaces are in rather good accordance with the third surface. Thus the effect depth of steam curing is near to the concrete open surface. The addition of silica fume to a concrete decrease the water sorptivity of steam curing and standard curing concretes, but for the improvement of the uniformity of concrete, the effect is not markedly obvious.
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Jin, Hu. "Late-Age Properties of Concrete with Different Binders Cured under 45°C at Early Ages." Advances in Materials Science and Engineering 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/8425718.

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It is commonly accepted that high curing temperature (near 60°C or above) results in reduced mechanical properties and durability of concrete compared to normal curing temperature. The internal temperature of concrete structures at early ages is not so high as 60°C in many circumstances. In this paper, concretes were cured at 45°C at early ages and their late-age properties were studied. The concrete cured at 20°C was employed as the reference sample. Four different concretes were used: plain cement concrete, concrete containing fly ash, concrete containing ground granulate blast furnace slag (GGBS), and concrete containing silica fume. The results show that, for each concrete, high-temperature curing after precuring does not have any adverse effect on the nonevaporable water content, compressive strength, permeability to chloride ions, and the connected porosity of concrete at late ages compared with standard curing. Additionally, high-temperature curing improves the late-age properties of concrete containing fly ash and GGBS.
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Maltais, Y., J. Marchand, R. Gagné, and A. Tagnit-Hamou. "Effets des cendres volantes sur le développement des résistances mécaniques des bétons préfabriqués." Canadian Journal of Civil Engineering 23, no. 4 (August 1, 1996): 940–49. http://dx.doi.org/10.1139/l96-900.

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The results of an investigation of the influence of fly ashes on the development of mechanical properties of concretes subjected to 24-h thermal curing are presented in this paper. In addition to the curing temperature (23 and 60 °C), the variables studied in this investigation were the type of cement (types 10 and 30) and the source of fly ashes (four different North-American class F fly ashes). Overall, 10 different concrete mixtures were tested. Test results indicate that thermal curing tends to increase significantly the concrete compressive strength in the first 24 h. Data also demonstrate that the thermal curing regime does not have any detrimental effect on the long-term compressive strength of ordinary portland cement concrete. Compressive strength of fly ash concretes was significantly reduced by thermal curing in the 1- to 28-day period, despite an initial increase. The influence of thermal curing on the development of concrete compressive strength is discussed. Key words: compressive strength, steam curing, fly ashes, precast concrete.
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He, Zhi Min, and Jun Zhe Liu. "Effect of Binders Combination on Porosity of Steam-Cured Concrete." Advanced Materials Research 183-185 (January 2011): 1984–88. http://dx.doi.org/10.4028/www.scientific.net/amr.183-185.1984.

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Under steam curing condition, there is significant increment in the porosity of concrete. For the purpose of reducing porosity of steam-cured concrete and improving the durability of steam-cured precast elements, this paper carried out contrastive experiments including two curing condition (steam curing and standard curing), simultaneously considering the effect of different binders type, investigated the porosity change of steam curing and standard curing concretes with mineral admixtures. The corresponding mechanism was also discussed. Results indicated that, taking replace of 30% cement with double-mixing fly ash and silica fume achieves the lowest steam-cured concrete porosity. Steam curing technological measures exert a significant influence on the steam-cured concrete unclosed top suface porosity. For the characteristics of different concrete mixtures, the same steam curing technological measures exert different influence. For the same concrete, adopting appropriate technological measures can greatly decreased the porosity of concrete surface to be exposed, especially for concrete with high water-binder ratio.
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Sounthararajan, Vallarasu Manoharan. "Empirical Prediction Models for Strength Gain Properties of Fly Ash Based Concrete Subjected to Accelerated Curing." Advanced Materials Research 1150 (November 2018): 73–90. http://dx.doi.org/10.4028/www.scientific.net/amr.1150.73.

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Experimental investigations on the early age, strength gain properties of fly ash blended cement concretes containing low and high volume fly ash replacement were studied. Concrete mixes were prepared with two different fly ash contents and varying concrete ingredients with water to binder ratio (w/b), fine to coarse aggregate ratio (F/c) and accelerator dosage. Five different curing techniques, namely controlled humidity curing; hot air oven curing, steam curing, hot water curing and normal water curing were adopted for curing the fly ash based concretes. Test results showed evidence the influence of accelerating admixtures and accelerated curing for obtaining the high early strength properties in fly ash mixed concrete. Most notably a maximum 1 day compressive strength of 40.20 MPa and 34.60 MPa with low (25%) and high (50%) volume fly ash concretes were obtained respectively in this study. Experimental results clearly indicated that the improvements on the strength gain properties with the careful selection of mix ingredients; accelerator addition and accelerated curing in fly ash based concrete mixes. Also, significant improvements on the flexural strength, elastic modulus, dynamic modulus and the ultrasonic pulse velocity test were noticed.
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Yang, Jun, Qiang Wang, and Yuqi Zhou. "Influence of Curing Time on the Drying Shrinkage of Concretes with Different Binders and Water-to-Binder Ratios." Advances in Materials Science and Engineering 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/2695435.

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Plain cement concrete, ground granulated blast furnace slag (GGBS) concrete, and fly ash concrete were designed. Three wet curing periods were employed, which were 2, 5, and 8 days. The drying shrinkage values of the concretes were measured within 1 year after wet curing. The results show that the increasing rate of the drying shrinkage of concrete containing a mineral admixture at late age is higher than that of plain cement concrete regardless of the wet curing time. With the reduction of wet curing time, the increment of total drying shrinkage of concrete decreases with the decrease of the W/B ratio. The negative effects on the drying shrinkage of fly ash concrete due to the reduction of the wet curing time are much more obvious than those of GGBS concrete and plain cement concrete. Superfine ground granulated blast furnace slag (SGGBS) can reduce the drying shrinkage of GGBS concrete and fly ash concrete when the wet curing time is insufficient.
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Turu'allo, Gidion. "Sustainable Development of Concrete Using GGBS: Effect of Curing Temperatures on the Strength Development of Concrete." Applied Mechanics and Materials 776 (July 2015): 3–8. http://dx.doi.org/10.4028/www.scientific.net/amm.776.3.

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The World Earth Summits in Rio de Janeiro, Brazil and Kyoto, Japan in 1992 and 1997 respectively, have made it clear that uncontrolled increased emission of greenhouse gases to the atmosphere is no longer environmentally and socially acceptable for sustainable development. The increase of cement production will affect the environmental preservation, natural conservation and increase the CO2emission, which is one of the primarily gases that contribute to the global warming. The use of ground granulated blast furnace slag (ggbs) to replace a part of Portland cement in concrete can reduce the CO2emission. It also can provide significant benefits to concrete properties, such as increase the workability and durability of concrete. The early strength of ggbs concretes that had been cured at standard curing temperature (20°C) were slower than that of concretes with Portland cement only, cured at the same temperature. However, there are some indications show that curing the ggbs concrete at elevated temperatures will significantly enhanced the early age strength of the concrete. The objectives of this research are to find out the effect of curing temperatures and levels replacement of Portland cement by ggbs on the strength development of concretes. The levels of ggbs to replace Portland cement were 0, 20, 35, 50 and 70%, while the curing temperatures were 20°C, 50°C and adiabatic curing. The concrete cubes were tested at ages: 6 and 12 hours, 1, 2, 4, 8, 16, 32, 64, 128, 256 and 365 days. The results showed that curing the ggbs concrete at temperatures higher than standard curing temperature, increased the strength development of the concrete at early ages.
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He, Zhi Min, Xiao Ju Shen, and Jun Zhe Liu. "Effect of Gypsum on Strength Development of Steam-Cured Concrete." Advanced Materials Research 194-196 (February 2011): 1085–88. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.1085.

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The use of fly ashes for cement-replacement purposes, especially in high volumes, decreases rate of early strength development of the steam curing concrete. To resolve it, this paper developed a new steam-cured concrete incorporating fly ash and a chemical activator (gypsum). Experiments were conducted to investigate the mechanical properties at early and later ages of steam and standard curing concretes. The corresponding mechanism was also discussed by testing the microstructure of concretes. Results indicate that the demoulding compressive strength of steam curing concrete with 4% gypsum dosage can meet production requirements, and compressive strength of this concrete at later ages increase well. Compared with that of ordinary pure cement steam-cured concrete, concrete with 4% gypsum has a higher compressive strength gain rate. At an early age, addition of the gypsum can distinctly accelerate the extent of hydration of the steam curing fly ash cement systems, and thus the microstructure of concrete becomes denser. However, in standard curing condtion, the effect of gypsum is not distinct.
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Shafeeque.V, Mohammed, Sanofar P.B, Praveen K.P, Jithin Raj, Nikhil V.P, and Gopikrishna P.M. "Strength comparison of self-curing concrete and Normal curing concrete." International Journal of Civil Engineering 3, no. 3 (March 25, 2016): 56–61. http://dx.doi.org/10.14445/23488352/ijce-v3i3p110.

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Camarini, Gladis. "Curing Effects on Air Permeability of Concrete." Advanced Materials Research 214 (February 2011): 602–6. http://dx.doi.org/10.4028/www.scientific.net/amr.214.602.

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The kinetics of cement hydration can be accelerated by steam curing and this kind of curing can be responsible for increasing concrete porosity, since a greater portion of non hydrated cement particles can be present. The increased porosity results can result in increased permeability. The aim of this work was to investigate the influence of curing on concrete quality by air permeability and compressive strength test. It was measured by means of a non steady state air permeameter. Concretes were produced with Portland cements containing 0%, 27% and 53% of ground granulated blastfurnace slag. The amount of slag in cement influenced concrete performance and steam curing increased air permeability of concrete.
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Dissertations / Theses on the topic "Curing Concrete"

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Wang, Jinsong. "Membrane curing and performance of concrete." Thesis, University of Dundee, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.257442.

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Pheeraphan, Thanakorn. "Accerlated curing of concrete with microwave energy." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10733.

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Heritage, Ian. "Direct electric curing of mortar and concrete." Thesis, Edinburgh Napier University, 2001. http://researchrepository.napier.ac.uk/Output/6571.

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Direct electric curing is the method by which the hydration reactions within concrete are thermally accelerated by passing an alternating electric current through the sample. This use of electricity as a means of supplying heat to young concrete and mortar has become recognised as a more effective and energy efficient form of accelerating the curing process than traditional steam curing. The present investigation involves studying the affects of thermally accelerated curing of cementitious materials in comparison to normally non-heated curing. Prior to mixing, tests are performed on the constituents of the cementitious mixes. Results of these tests are used in the creation of mix designs for mortar and concrete samples. A range of concrete mixes are designed with and without additives and admixtures are used to make cubes, slabs and beams. From the testing results, the factors affecting the short and long term properties of electrically cured cementitious materials are investigated and heating regimes are presented to achieve specific properties of both strength and durability at specific ages. A substantial section of reinforced concrete is required to gain representative results in electrically curing reinforced concrete slabs. Compressive strength is difficult to measure due to the electrical distortion affects of inserts and the damage caused by coring so that at present, basic maturity concepts are used as a compressive strength guide which limits the validity of results obtained. This research looks at refining these concepts to include early age heating effects induced by direct electric curing. The microstructural development of concrete when subjected to accelerated curing is also considered. The affect of delay periods and maximum temperature is studied using a scanning electron microscope and the results presented.
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Rostami, Vahid. "Development of early carbonation curing to replace steam curing for precast dry-mix concrete." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=114470.

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Early carbonation curing technology was developed to replace steam curing for precast dry-mix concrete production. To facilitate carbon dioxide diffusion in concrete within 24-h after casting, presetting is necessary. It was accomplished by a short steam curing or by a controlled air curing. Carbonation was carried out after presetting at a gas pressure of 0.15 MPa and in a period of two hours. The performance of carbonated concretes was characterized by their carbon uptake, strength gain, pH values, calcium hydroxide content, permeability, sorptivity, freeze-thaw damage resistance and sulphate and acid resistance. It was found that the early carbonation curing could produce concrete with comparable strength by steam curing and lead to reduced calcium hydroxide on surface while maintaining pH higher than the corrosion threshold at the core. Carbonated concretes also exhibited improved resistance to sulphate attack, water absorption, and ion penetration. The early carbonation curing also demonstrated CO2 sequestration potential as an added value to the process. The microstructure of the cement paste subject to early carbonation was studied to understand the mechanism of early carbonation of concrete. Calcium carbonates produced by the process were integrated in calcium-silicate-hydrate while maintaining its initial silicate structure. The wetting procedure applied in subsequent hydration was essential to produce more hydration products in the carbonated zone and increase strength and durability. Both ordinary Portland cement (OPC) and Portland limestone cement (PLC) were investigated for their carbonation behaviour. PLC was found to be more CO2 reactive.
La technologie de cure par carbonatation précoce a été développée pour remplacer la cure par étuvage pour la production du béton mélange-à-sec préfabriqué. Afin de faciliter la diffusion du dioxyde de carbone dans le béton dans les 24 heures après le moulage, le préréglage est nécessaire. Ceci a été accompli par une cure par étuvage de courte durée ou par une cure par air contrôlé. Après le préréglage, la carbonatation a été effectuée à une pression de gaz de 0,15 MPa et dans une période de deux heures. La performance des bétons carbonatés a été caractérisée par leur absorption de carbone, le gain de résistance, les valeurs de pH, la teneur en hydroxyde de calcium, la perméabilité, la sorptivité, la résistance au gel-dégel ainsi qu'aux sulfates et à l'acide. Il a été constaté que la cure par carbonatation précoce pourrait produire du béton avec une résistance comparable à la cure par étuvage. Aussi, il a été noté que la carbonatation précoce pourrait résulter à une réduction de l'hydroxyde de calcium sur la surface tout en permettant le pH au coeur d'être supérieure à la valeur seuil de la corrosion. Des bétons carbonatés ont également présenté une résistance améliorée aux attaques des sulfates, à l'absorption de l'eau et à la pénétration des ions. En plus, la cure par carbonatation précoce a démontré le potentiel de séquestration du CO2 comme une valeur ajoutée au processus.La microstructure de la pâte de ciment soumise à la carbonatation précoce a été étudiée afin comprendre le mécanisme de carbonatation du béton. L'hydrate silicate de calcium (HSC) dans le ciment carbonaté était fortement intégré avec les carbonates de calcium tout en conservant sa structure silicatée initiale. La procédure de mouillage appliquée à l'hydratation ultérieure a été essentielle afin de produire plus de produits d'hydratation dans la zone carbonatée et d'augmenter la résistance et la durabilité. Le ciment Portland ordinaire (CPO) et le ciment Portland au calcaire (CPC) ont été étudiés pour comprendre leur comportement lors de la carbonatation. Le CPC est en mesure d'absorber plus de dioxyde de carbone et de produire une résistance plus élevée à un âge précoce.
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Idowu, Olusola Ige. "Effect of improper curing on concrete properties that may affect concrete durability." Thesis, University of Leeds, 2017. http://etheses.whiterose.ac.uk/19158/.

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The use of concrete increasing annually due its favourable properties and readily availability. Demand for concrete will continue to increase and it will remain the world’s most important construction materials for many years to come. However, the use of Portland cement concrete has an environmental burned, and so in a drive to reduce the carbon footprint of construction, there is widespread attention directed towards the utilisation of wastes and industrial by-products to minimise Portland cement (PC) consumption. The cement industry increasingly uses additions, such as fly ash. The literature has established the use of fly ash as partial replacement of Portland cement to increase strength at later age and exhibit considerable enhancement in durability. However, such binders hydrate more slowly, so proper curing conditions become more important. Ideally, the durability of concrete should not be a concern. Some degree of weathering should be expected, but improper concreting procedures can cause the deterioration to be earlier than expected. Furthermore, since durability issues cannot be seen immediately, some assessment of the impact of improper concrete curing is needed. The study has involved casting of concretes prepared with either CEM I or a CEM I blend with 30% replacement with fly ash to investigate the impact of improper curing. Performance was evaluated in terms of compressive strength, drying shrinkage, transport properties and resistance to carbonation. Paste samples were characterised by TGA, XRD and SEM to follow hydration and microstructural development. Also since the degree of saturation is known to affect the compressive strength of concrete, and curing under ambient conditions will lead to changes in the degree of concrete saturation, the work checked the impact of the degree of saturation on compressive strength; to enable an accurate understanding of the impact of improper curing. Improper curing leads to reduced compressive strength development and increased drying shrinkage. Sorptivity and permeability values were increased. This is due to reduced levels of cement hydration, as water evaporates from the concrete surface. The effect of improper curing on resistance to carbonation revealed that samples improperly cured carbonated more than those ideally cured. This study has shown that the impact on sorptivity and permeability is far greater than the impact on compressive strength, with implications for the long-term durability of concrete. Composite cements, containing 30% fly ash, showed comparable strengths to CEM I concretes and improved transport properties when ideally cured. Additions of fly ash reduced the drying shrinkage. Improper curing however led to reduced performance. Strength was compromised by improper curing to a greater degree than for equivalent CEM I mixes. However, it was sorptivity and permeability which were most severely affected. This was due to the reduced degree of cement hydration leading preventing the pozzolanic reaction between the fly ash and portlandite. Also, higher carbonation depth was seen on fly ash samples that were not cured. Low strength concrete, which already has an inherently higher porosity, is more greatly affected by improper curing than high strength concrete. This is presumed to be due to the ease with which water can evaporate from the surface of the more porous matrix. Also, concrete workability has been found to be a factor which can help to reduce the embodied carbon of concrete, with stiffer mixes having lower carbon footprints. However, this study has shown that stiff concrete mixes may be less durable and more susceptible to improper curing. This may be explained by the lower overall water contents within the stiff mixes, and therefore the greater impact of surface water evaporation. The effect of changes in the degree of saturation showed the deleterious effects of improper curing, with the saturated, ambient cured samples all exhibiting lower strengths than the equivalent ideally cured samples. The large capillary pores developed due to improper curing was seen with lower calcium hydroxide contents. The reduced hydration products obtained support the result that lower degree of hydration was produced due to improper curing since the hydration of cement cannot continues in the dry environment. This study confirms the need for good site practice, and shows that embodied carbon should not be the only factor when considering the environmental performance of concrete. Rather, durability and whole life performance should also be considered.
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Agbasi, Chukwuemeka Chijioke. "New approaches for assessing the curing of concrete." Thesis, University of London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249326.

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Catley, David Gerald. "Thermal curing of concrete with conductive polymer technology." Thesis, Sheffield Hallam University, 2009. http://shura.shu.ac.uk/19431/.

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Concrete is used on the majority of all construction projects. It is manufactured using the core constituents of a cement binder, typically Portland Cement, proportions of coarse and fine aggregates and water. The strength development of concrete is achieved by the addition of water that reacts with the binder in the form of a hydration reaction. This hydration reaction or strength development is dependant on two primary curing factors, time and temperature. Increasing the rate of strength development of concrete by elevating the curing temperature at early ages has advantages of maximising concrete production and reducing manufacturing time. Increasing the temperature of early age concrete up to 70 deg C is used in precast plants where it is critical for a minimum strength to be achieved within a certain time period to allow the removal of the concrete sections from moulds and forms. Various practices are adopted by precast concrete manufacturers to achieve the early strengths required to maximise production, both thermal and non-thermal. These include heating the various mix constituents of the concrete, using unnecessarily high cement contents within the mix, using large quantities of chemical admixtures or by increasing the ambient temperature of plants within which the elements are manufactured. In precast concrete plants the use of steam to elevate the curing temperature of the concrete is the most commonly adopted technique. However, it is inefficient and rarely provides controlled temperatures to the concrete as recommended in approved codes of practices and standards. This research programme has investigated the use of an alternative heating technology for concrete curing, optimising a unique Conductive Polymer Technology (CPT). The application and optimisation of the CPT material to provide heat curing to concrete within the laboratory, in-situ and within precast concrete plants has been investigated. The electrical properties of the CPT were investigated to determine their relationship with the size of the concrete elements. This was done for various CPT materials with different Characteristic Resistances. Having gained an in depth understanding of the electrical properties of the CPT, various heating Jackets were designed and manufactured to thermally cure concrete elements at early ages. The Jackets were designed with various outer protective materials. The effect of CPT curing on the strength and shrinkage, both at early ages and long-term, was determined. The thermal performance of the heating jackets was determined for each application including the uniformity of the heating provided into the concrete element. The interaction of the heat generated by hydration and CPT heating for larger elements was also investigated. The results showed that the CPT materials varied depending upon their manufacture and required target resistance. The thermal blankets had the capability to uniformly heat concrete elements at various ambient temperatures, to temperatures required by standards and approved codes of practice for accelerated curing of concrete. This uniform heating resulted in greater compressive strength of laboratory scale concrete elements with reduced shrinkage. The research identified the important parameters for CPT jacket design andmaterials selection e.g. the importance of the contact between CPT heating elements and the concrete element and the selection of appropriate insulation materials. The test programme also investigated the durability of CPT under different exposure conditions. The results from testing the CPT material under conditions such as freeze thaw, heating & cooling and wetting & drying showed that wetting and drying had the most significant affect on the CPTs resistance, altering by 10%. Other tests of durability included punching holes of various sizes into the CPT samples to determine their effect on the CPT's resistance. This was found to be directly linked to the area of CPT material removed. The manufacture, performance and operation of the CPT materials has also been investigated to provide an understanding of its mode of heating and its effect on concrete curing. The concept of maturity has been used to determine relationships between strength development and thermal curing and energy requirement for thermal curing when using CPT.
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Prada, Julian Ignacio. "Development of high performance concrete for prestressed bridges." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/19487.

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Morshed, Md Abu. "Early carbonation curing of fresh concrete and its applications in precast concrete production." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=117115.

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Carbonation curing of fresh concrete at early age and the feasibility to integrate the technology into precast concrete production were investigated. It was found that equilibrium of relative humidity between ambient environment and interior concretes was not possible to achieve in early carbonation of fresh concrete even with preconditioning. Instead, the degree of carbonation was dominated more by the water content in the concrete than by its internal humidity. A fan-drying precondition seemed to be necessary and practically feasible to justify the water content in industry scale application. The process was applied to the production of precast lightweight concrete panels and normal weight hollow core concrete slabs. The lightweight aggregates were utilized as internal water reservoirs to balance the moisture equilibrium during preconditioning, carbonation reaction and subsequent hydration. Water movement from the internal reservoirs was postulated by resistivity measurements; and was further verified in terms of CO2 uptake, strength development, plastic shrinkage compensation and alkalinity regain. A near-surface diffusion carbonation curing was developed to partially replace the heat curing in hollow-core concrete slab production. The hollow core slab so produced had shown much better strength than the hydration reference or by the heat curing alone, with reduced porosity and less vulnerability to delayed ettringite formation. Besides the technical benefits, CO2 sequestration potential is an added value to the process. An average 15% CO2 uptake could lead to sequestration of approximately 10,000 tonnes of CO2 per year by precast hollow-core concrete plants in Canada alone.
La carbonatation du béton frais effectuée à son plus jeune âge, ainsi que la possibilité de potentiellement intégrer cette technologie dans la production du béton préfabriqué a été analysé dans cette étude. Il a été constaté que l'équilibre de l'humidité relative entre l'intérieur du béton et le milieu ambiant dans lequel il se trouve n'était pas possible à établir au début du processus préalable de la cure du béton frais par carbonatation. De plus, la quantité d'eau présente affecte le degré de carbonatation bien plus que l'humidité relative interne. Le séchage préalable du béton par ventilateurs d'es trouvé nécessaire et pratique afin de justifier la présence d'eau à l'échelle industrielle. Le processus a été utilisé pour la production des panneaux de béton préfabriqué de poids léger, ainsi que pour les dalles de béton alvéolées de poids ordinaire. L'utilisation des granulats légers en tant que réservoirs d'eau internes a servi à balancer l'humidité d'équilibre durant le déroulement de tout le processus, voir du début de l'étape préalable, durant la période de carbonatation jusqu'à l'hydratation postérieure. La circulation d'eau des réservoirs internes est due aux mesures de résistivité; ceci a été validé en termes de l'étendu de carbonatation, du développement de la résistance mécanique, par la compensation du rétrécissement plastique, et par le regain de l'alcalinité. De plus, la carbonatation dynamique près de la surface du béton a été conçue afin de partiellement remplacer le procédé d'étuvage compris dans la production de dalles de bétons alvéolées. Ce type de dalles a démontré un bien meilleur niveau de résistance mécanique que celui atteint par les dalles ordinairement hydratées ou par les dalles étuvées. En plus d'avoir une meilleure résistance, ces dalles possèdent moins de porosité et sont moins vulnérables au développement tardif d'ettringite. Outre les avantages techniques, la possibilité de séquestration du CO2 est un gain ajouté au procédé. En moyenne, un contenu de 15% de CO2 dans la production Canadienne des dalles de bétons alvéolées pourrait séquestrer 10,000 tonnes de CO2 chaque année.
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Ye, Gang. "Carbon dioxide uptake by concrete through early-age curing." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=19587.

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Due to the anthropogenic activities, the increasing carbon dioxide concentration in the atmosphere is disturbing the natural equilibrium of the greenhouse gas, and causes the global temperature rise. In 1990, the CO2 emission from fossil fuel fired power plants contributed 30% of global emissions. In the same year, the cement industry contributed about 5% of the total. According to Kyoto Protocol, a tremendous effort is required to reduce the carbon dioxide emission. One potential technology in CO2 mitigation responses is the use of concrete products as carbon sink through the early age fast curing. The cement compounds C3S and C2S are instantaneously carbonized into calcium carbonate and silica gel, once cement is mixed with water and exposed to the carbon dioxide gas. If it works, concrete production lines can be set next to the power plants or cement kilns to produce the concrete products using the captured CO2 as curing agent. This thesis reports a feasibility study based on a preliminary work. The purpose of the research was to find a proper combination of a large number parameters to use cement, slag or waste cement to sequester CO2 emitted from industrial point sources, and at the same time to make high performance concrete products. In order to understand the carbonation curing, this study was directed towards the mix designs, carbonation conditions and the mechanical properties of carbonated products. More than 40 batches of carbonated concrete specimens were prepared with the following variables in their preparation: chemical additive, CO2 concentration, carbonation time, carbonation pressure, thickness of specimen, and CO2 supply method. The performance of the carbonated specimens was assessed through the mass gain, the compressive strength, the bending strength, the pressure drop, the temperature rise in the curing chamber, the carbonation depth and the microstructure characteristics. Two-hour carbonated concrete products can have a strength equivalent to 2-month air curing, and take up 8% carbon dioxide by weight without special treatment.
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Books on the topic "Curing Concrete"

1

Kafry, I. D. Direct electric curing of concrete: Basic design. Latheronwheel, Caithness: Whittles Publishing, 1993.

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Nowakowski, Bolesław. Z badań nad niektórymi metodami przyspieszonego dojrzewania tworzyw cementowych. Poznań: Wydawn. Politechniki Poznańskiej, 1985.

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Poole, Toy S. Guide for curing of portland cement concrete pavements. McLean, Va: Federal Highway Administration, 2005.

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Poole, Toy S. Guide for curing of Portland cement concrete pavements. McLean, VA: Turner-Fairbank Highway Research Center, Research, Development, and Technology, 2006.

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Shvedov, V. N. Usadka i treshchinostoĭkostʹ betonov. Kishinev: "Shtiint͡s︡a", 1985.

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N, Chumadov L., ed. Ėlektroprogrev i͡a︡cheistogo betona v germetizirovannykh paketakh termoform. Apatity: Kolʹskiĭ nauch. t͡s︡entr AN SSSR, 1991.

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Formwork striking times: Criteria, prediction and methods of assessment. London: Construction Industry Research and Information Association, 1995.

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Harrison, T. A. Formwork striking times: Methods of assessment. 2nd ed. London: C.I.R.I.A., 1987.

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Mart͡sinkevich, V. L. Ėnergosberegai͡ushchai͡a tekhnologii͡a uskorennogo tverdenii͡a betona. Minsk: "Navuka i tėkhnika", 1990.

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Hong, Chen Zhang. Air permeability of cover concrete and the effect of curing. Slough: British Cement Association, 1989.

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Book chapters on the topic "Curing Concrete"

1

Han, Baoguo, Liqing Zhang, and Jinping Ou. "Self-Curing Concrete." In Smart and Multifunctional Concrete Toward Sustainable Infrastructures, 55–66. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4349-9_4.

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Hasan, Nausherwan. "Concrete Mixing Placing and Curing." In Durability and Sustainability of Concrete, 85–115. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-51573-7_4.

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Antonyan, Ashot. "Concrete Hydraulic Curing Under Different Moisture Conditions." In Lecture Notes in Civil Engineering, 471–79. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-83917-8_42.

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Suryawanshi, Nagesh T., and Sunil B. Takare. "Self-curing Possibilities of Polygel in Ordinary Concrete." In Smart Technologies for Energy, Environment and Sustainable Development, 231–39. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6148-7_24.

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Manwatkar, Mohit, and P. Y. Pawade. "Effects of Temperature Curing on Concrete with Silica." In Smart Technologies for Energy, Environment and Sustainable Development, 347–56. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6148-7_35.

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Bin Wan Ibrahim, Mohd Haziman, Shahiron Shahidan, Hassan Amer Algaifi, Ahmad Farhan Bin Hamzah, and Ramadhansyah Putra Jaya. "CBA Self-compacting Concrete Exposed to Water Curing." In Properties of Self-Compacting Concrete with Coal Bottom Ash Under Aggressive Environments, 9–31. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-2395-0_2.

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Yuan, Jian-Bo, Jia-Liang Yao, Hui-Cong Wang, and Ming-Jie Qu. "Membrane-Forming Performance and Application of Emulsion Wax Curing Agent (EWCA) for Cement Concrete Curing." In Materials for Sustainable Infrastructure, 274–86. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-61633-9_18.

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Sargon, Simon P., Eslam Y. Gomaa, Cedric Kashosi, Ahmed A. Gheni, and Mohamed A. ElGawady. "Effect of Curing Temperatures on Zero-Cement Alkali-Activated Mortars." In International Congress on Polymers in Concrete (ICPIC 2018), 549–55. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78175-4_70.

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Jacob, Chinnu Susan, and Vidya Jose. "Study on Mechanical Properties of Self Healing Self Curing Concrete." In Lecture Notes in Civil Engineering, 935–43. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-26365-2_85.

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Reinhardt, H. W., and Abebe Dinku. "Effects of Curing on the Gas Permeability of Cover Concrete." In The Modelling of Microstructure and its Potential for Studying Transport Properties and Durability, 325–37. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-015-8646-7_16.

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Conference papers on the topic "Curing Concrete"

1

Shi, Shi, Yun Bai, H. Li, D. L. Xu, and P. A. Muhammed Basheer. "Comparative Study of Alkali-Activated Fly Ash Manufactured Under Pulsed Microwave Curing and Thermal Oven Curing." In International Conference on the Durability of Concrete Structures. Purdue University Libraries Scholarly Publishing Services, 2014. http://dx.doi.org/10.5703/1288284315483.

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Ha, Ju-hyung, Youn-su Jung, and Yun-gu Cho. "Development of Automated Curing System for Mass Concrete." In 30th International Symposium on Automation and Robotics in Construction and Mining; Held in conjunction with the 23rd World Mining Congress. International Association for Automation and Robotics in Construction (IAARC), 2013. http://dx.doi.org/10.22260/isarc2013/0055.

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Schmidt, Markus, and Volker Slowik. "Capillary Pressure Controlled Concrete Curing in Pavement Construction." In 2013 Airfield & Highway Pavement Conference. Reston, VA: American Society of Civil Engineers, 2013. http://dx.doi.org/10.1061/9780784413005.023.

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Venkidusamy, Naveenraj, Kulanthaivel Ponnusamy, and Denesh Kuppanan Chenniappan. "Experimental study on polymer based self curing concrete." In 3RD NATIONAL CONFERENCE ON CURRENT AND EMERGING PROCESS TECHNOLOGIES – CONCEPT 2020. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0011057.

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Lura, P. "Pumice aggregates for internal water curing." In International RILEM Symposium on Concrete Science and Engineering: A Tribute to Arnon Bentur. RILEM Publications SARL, 2004. http://dx.doi.org/10.1617/2912143586.013.

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Mirmomeni, Mahsa, Amin Heidarpour, Erik Schlangen, and Scott Smith. "Effect of Post-Fire Curing on the Residual Mechanical Properties of Fire-Damaged Self-Compacting Concrete." In 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures. IA-FraMCoS, 2016. http://dx.doi.org/10.21012/fc9.027.

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Li, Guo, Xiaoling Li, Rongrong Wei, Jianmin Du, and Xiaosuo Wu. "Concrete Carbonation and Chloride Resistance Under Initial Hot Water Curing." In International Conference on the Durability of Concrete Structures. Purdue University Libraries Scholarly Publishing Services, 2014. http://dx.doi.org/10.5703/1288284315383.

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Atsushi, Shimabukuro, and Hashimoto Ken-Ichi. "Effect of Curing Method and Curing Period on Characteristic of Compressive Strength for Ca Concrete." In The Seventh International Structural Engineering and Construction Conference. Singapore: Research Publishing Services, 2013. http://dx.doi.org/10.3850/978-981-07-5354-2_m-27-253.

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Koh, Taehoon, Seonkeun Hwang, Junghoon Yoo, and Donggeun Lee. "Rapid Construction Technology for Railroad Concrete Infrastructure: Microwave Heat Curing Technology." In 2015 Joint Rail Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/jrc2015-5704.

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The cast-in-place concrete lining construction process represents about 25% of the total railroad tunnel construction period. Moreover, the construction period for lining concrete depends on the speed of the curing process of the lining concrete. Therefore, in cold weather when the air temperature in mountain railroad tunnel is consistently 10 degrees or below, equipment for heat insulation of cast-in-place concrete lining, such as a portable fossil fuel heater, must also be prepared to maintain an appropriate curing temperature in the tunnel. It generally takes about 24 to 36 hours to reach the compressive strength (3 to 5MPa) required to remove the lining form. Recently, microwave heat curing technology has been developed as a way of substantially reducing the concrete curing time, to achieve a reduction in the total construction period. The microwave heating system developed in this technology is comprised of a microwave generator, cavity, insulator, and exothermic body (microwave irradiated pyrogen). In this system, microwaves generated from the magnetron are irregularly reflected inside the cavity, and rapidly heat up the exothermic body so that the heat is transferred to the lining form and the concrete in turn, resulting in the accelerated hydration of concrete. Based on the field test data from the construction of the railroad tunnel cast-in-place concrete lining, it is found that this technology is able in 6 to 12 hours to complete the curing of concrete lining sufficiently to remove the form. It is hoped that this approach will substantially reduce the construction period and cost of tunnel lining, even during cold-weather.
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Torre, Ana, Edward Común, Luis Mosquera, and Arleey Sanabria Sanabria. "Application of Self-Curing Concrete Method using Polyethylene Glycol." In The 18th LACCEI International Multi-Conference for Engineering, Education, and Technology: Engineering, Integration, And Alliances for A Sustainable Development” “Hemispheric Cooperation for Competitiveness and Prosperity on A Knowledge-Based Economy”. Latin American and Caribbean Consortium of Engineering Institutions, 2020. http://dx.doi.org/10.18687/laccei2020.1.1.246.

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Reports on the topic "Curing Concrete"

1

Meeks, Kenneth W., and Nicholas J. Carino. Curing of high-performance concrete:. Gaithersburg, MD: National Institute of Standards and Technology, 1999. http://dx.doi.org/10.6028/nist.ir.6295.

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Carino, Nicholas J., and Kenneth W. Meeks. Curing of high-performance concrete:. Gaithersburg, MD: National Institute of Standards and Technology, 2001. http://dx.doi.org/10.6028/nist.ir.6505.

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Newbolds, Scott, and J. Olek. Influence of Curing Conditions on Strength Properties and Maturity Development of Concrete. West Lafayette, IN: Purdue University, 2002. http://dx.doi.org/10.5703/1288284313251.

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Howard, Isaac, Thomas Allard, Ashley Carey, Matthew Priddy, Alta Knizley, and Jameson Shannon. Development of CORPS-STIF 1.0 with application to ultra-high performance concrete (UHPC). Engineer Research and Development Center (U.S.), April 2021. http://dx.doi.org/10.21079/11681/40440.

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This report introduces the first release of CORPS-STIF (Concrete Observations Repository and Predictive Software – Structural and Thermodynamical Integrated Framework). CORPS-STIF is envisioned to be used as a tool to optimize material constituents and geometries of mass concrete placements specifically for ultra-high performance concretes (UHPCs). An observations repository (OR) containing results of 649 mechanical property tests and 10 thermodynamical tests were recorded to be used as inputs for current and future releases. A thermodynamical integrated framework (TIF) was developed where the heat transfer coefficient was a function of temperature and determined at each time step. A structural integrated framework (SIF) modeled strength development in cylinders that underwent isothermal curing. CORPS-STIF represents a step toward understanding and predicting strength gain of UHPC for full-scale structures and specifically in mass concrete.
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Roesler, Jeffery, Sachindra Dahal, Dan Zollinger, and W. Jason Weiss. Summary Findings of Re-engineered Continuously Reinforced Concrete Pavement: Volume 1. Illinois Center for Transportation, May 2021. http://dx.doi.org/10.36501/0197-9191/21-011.

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This research project conducted laboratory testing on the design and impact of internal curing on concrete paving mixtures with supplementary cementitious materials and evaluated field test sections for the performance of crack properties and CRCP structure under environmental and FWD loading. Three experimental CRCP sections on Illinois Route 390 near Itasca, IL and two continuously reinforced concrete beams at UIUC ATREL test facilities were constructed and monitored. Erodibility testing was performed on foundation materials to determine the likelihood of certain combinations of materials as suitable base/subbase layers. A new post-tensioning system for CRCP was also evaluated for increased performance and cost-effectiveness. This report volume summarizes the three year research effort evaluating design, material, and construction features that have the potential for reducing the initial cost of CRCP without compromising its long-term performance.
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