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Relevant bibliographies by topics / Pozzolanic Reactions

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Academic literature on the topic 'Pozzolanic Reactions'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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Journal articles on the topic "Pozzolanic Reactions"

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Merida, Ahcene, and Fattoum Kharchi. "Corrosion of the Pozzolan Concrete in Sulfates." Advanced Materials Research 911 (March 2014): 494–98. http://dx.doi.org/10.4028/www.scientific.net/amr.911.494.

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Sulfate attack and its effects are important from both scientific and industrial viewpoints. Itis perceived that cements containing pozzolan have better performance in sulfate solutions,since the pozzolanic reactions reduce the quantity of calcium hydroxide and increasecalcium silicate hydrate. This paper investigates the physical and mechanical properties ofconcretes made by blended cement containing Algerian natural pozzolan of volcanic origin, and Portland cement. in order to better determine the pozzolanic effect of the pozzolan addition in the concrete, the analysis of the experimental re

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Čáchová, Monika, Lenka Scheinherrová, Libor Kobera, Martina Urbanová, Jiří Brus, and Martin Keppert. "Monitoring of Kinetics of Pozzolanic Reaction." Key Engineering Materials 722 (December 2016): 126–31. http://dx.doi.org/10.4028/www.scientific.net/kem.722.126.

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The pozzolanic additions are widely used as concrete component for numerous technical, economic and environmental reasons. Obviously the hydration process in a pozzolana containing system differs from hydration of Ordinary Portland Cement (OPC) what is indicated macroscopically by slower increase of strength and lower hydration heat. This paper aims to study pozzolanic reaction from perspective of chemical kinetics. From this point of view pozzolanic reaction and carbonation are two parallel reactions which are competing for portlandite (Ca (OH)2). The rate of each of these two reactions is ch

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Juimo Tchamdjou, Willy Hermann, Sophie Grigoletto, Frédéric Michel, Luc Courard, Toufik Cherradi, and Moulay Larbi Abidi. "Effects of Various Amounts of Natural Pozzolans from Volcanic Scoria on Performance of Portland Cement Mortars." International Journal of Engineering Research in Africa 32 (September 2017): 36–52. http://dx.doi.org/10.4028/www.scientific.net/jera.32.36.

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The aim of this paper is to assess the possibility of using natural pozzolans (NPs) from Cameroonian volcanic scoria as supplementary cementitious materials (SCMs) in the production of Portland cement mortars. Four natural pozzolans (Black Natural Pozzolan: BNP, Dark-Red Natural Pozzolan: DRNP, Red Natural Pozzolan: RNP and Yellow Natural Pozzolan: YNP) with 3600, 4500, 4700 and 5200 cm2/g Blaine fineness respectively were produced from different colors (Black, Dark red, Red and Yellow) volcanic scoria in a laboratory mill. Natural pozzolans were characterized with regard to particle size dist

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Cizer, Özlem, Koen Van Balen, and Dionys Van Gemert. "Competition between Hydration and Carbonation in Hydraulic Lime and Lime-Pozzolana Mortars." Advanced Materials Research 133-134 (October 2010): 241–46. http://dx.doi.org/10.4028/www.scientific.net/amr.133-134.241.

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A combined reaction of hydration and carbonation takes place in hydraulic lime and lime-pozzolana mortars. Hydration reactions are the first reaction and carbonation of lime is the complementary reaction in the strength gain. Competition between these two reactions can occur in lime-pozzolana mortars if the pozzolanic material has low reactivity with lime, leading to the consumption of lime by carbonation reaction. The degree and the order of these reactions are strongly influenced by the moisture content. Hydration reactions are enhanced under moist conditions while carbonation is delayed. Cu

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Ťažký, Martin, and Rudolf Hela. "Synergistic Effect of High Temperature Fly Ash with Fluidized Bed Combustion Fly Ash in Cement Composites." Key Engineering Materials 722 (December 2016): 113–18. http://dx.doi.org/10.4028/www.scientific.net/kem.722.113.

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Using high temperature fly ash for his pozzolan properties to cement composite production is known a few years ago. New ways combustion of fossil fuels also creates a new type of fly ash, named fluidized bed combustion fly ash. However, this fly ash has same pozzolan properties as has high temperature fly ash, this type is not using for production of cement composites. Fluidized bed combustion fly ash has highly variable chemical composition but usually it has a higher amount of free CaO together with sulphates. This higher amounts of free CaO after mixing of fluidized bed combustion fly ash w

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Suttikul, Supaluk, Kanyarat Ano, and Kedsarin Pimraksa. "Effect of Calcium Hydroxide Content on Pozzolanic Reaction of Calcined Clays: Their Mechanical Properties and Microstructures." Materials Science Forum 1034 (June 15, 2021): 161–68. http://dx.doi.org/10.4028/www.scientific.net/msf.1034.161.

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The research aimed to investigate the effect of calcium hydroxide content on pozzolanic reaction of calcined clays. Pozzolanic reaction of calcined clay was determined in terms of its mechanical properties, phase development and microstructures. Three clay minerals (two kaolinitic clays and kaolinite-montmorillonite clay) were chosen to produce pozzolanic materials via calcination at temperature of 700 °C to allow dehydroxylation of clay minerals. Ratios of calcium hydroxide to calcined clays were varied from 0.1 to 0.5. Mixing water contents or liquid to solid ratios (0.62, 0.75 and 0.80) and

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Wang, Xiao-Yong. "Analysis of Hydration and Optimal Strength Combinations of Cement-Limestone-Metakaolin Ternary Composite." Advances in Materials Science and Engineering 2019 (May 2, 2019): 1–13. http://dx.doi.org/10.1155/2019/8361810.

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Metakaolin (MK) is an aluminosilicate pozzolan material and can contribute to property development of concrete due to the pozzolanic reaction. Limestone (LS) powder presents the dilution effect, nucleation effect, and chemical effect on hydration of cement. When metakaolin and limestone are used together, due to the additional chemical reaction between the aluminum phase in MK and limestone, the synergetic benefit can be achieved. This study presents a hydration model for cement-limestone-metakaolin ternary blends. Individual reactions of cement, metakaolin, and limestone are simulated separat

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Lee, Nankyoung, Yeonung Jeong, Hyunuk Kang, and Juhyuk Moon. "Heat-Induced Acceleration of Pozzolanic Reaction Under Restrained Conditions and Consequent Structural Modification." Materials 13, no. 13 (2020): 2950. http://dx.doi.org/10.3390/ma13132950.

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This study investigated the heat-induced acceleration of cement hydration and pozzolanic reaction focusing on mechanical performance and structural modification at the meso- and micro-scale. The pozzolanic reaction was implemented by substituting 20 wt.% of cement with silica fume, considered the typical dosage of silica fume in ultra-high performance concrete. By actively consuming a limited amount of water and outer-formed portlandite on the unreacted cement grains, it was confirmed that high-temperature curing greatly enhances the pozzolanic reaction when compared with cement hydration unde

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Ouypornprasert, Winai, Narong Traitruengtatsana, and Kong Kamollertvara. "Optimum Partial Replacement of Cement by Nanosilica, Microsilica and Rice Husk Ash for Mass Production of Concrete." Key Engineering Materials 751 (August 2017): 544–49. http://dx.doi.org/10.4028/www.scientific.net/kem.751.544.

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The objective of this technical paper was to propose the use of optimum partial replacement of cement by pozzolan of high-silica content i.e. nanosilica, silica fume and rice husk ash. Firstly cement hydration, pozzolanic reactions of pozzolan and stoichiometry were reviewed. Then the optimum fractional replacement of cement by pozzolan based on the complete consumption of calcium hydroxide and the strength activity index (SAI) were formulated and proposed. After that the results of a series of tests of cement mortars were shown to verify the proposed concepts. The applicability for the mass c

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Gadouri, Hamid, Khelifa Harichane, and Mohamed Ghrici. "Assessment of sulphates effect on pH and pozzolanic reactions of soil–lime–natural pozzolana mixtures." International Journal of Pavement Engineering 20, no. 7 (2017): 761–74. http://dx.doi.org/10.1080/10298436.2017.1337119.

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Dissertations / Theses on the topic "Pozzolanic Reactions"

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Wang, Shuangzhen. "Biomass and Coal Fly Ash in Concrete: Strength, Durability, Microstructure, Quantitative Kinetics of Pozzolanic Reaction and Alkali Silica Reaction Investigations." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1819.pdf.

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Tekin, Ahmet Veli. "Effect Of Coating Materials And Mixture Constituents On The Permeability Of Concrete." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614214/index.pdf.

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The improvement in the impermeability of concrete was studied using different methods. The main aim was to investigate impermeability improvement of concrete and to compare these methods. Two different methods were examined to investigate and compare impermeability and strength improvement of concrete by using two different sets of concrete specimens. These methods included the application of coating materials to concrete and the production of concrete using different constituent amounts and types. The first set of concrete specimens was prepared by applying two different coating materials (a

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Silva, Patricia Barboza da. "Estabilização de misturas de resíduos sólidos de demolição e da indústria cerâmica para uso em camadas de pavimentos viários." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/3/3138/tde-03112014-113759/.

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Esta pesquisa trata da estabilização de misturas de agregados reciclados por meio da ativação de seus finos, cujas composições possibilitam a ocorrência de reações químicas de cimentação. Para o desenvolvimento da pesquisa foram utilizados dois tipos de agregados reciclados: um proveniente de resíduo de demolição de natureza cimentícia e outro da indústria de cerâmica vermelha. O uso dos materiais foi feito por meio de dosagens para obtenção de misturas cujas combinações de materiais pudessem, quimicamente, potencializar a ocorrência de hidratação do cimento anidro existente nos finos do agreg

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Ambruz, Pavel. "Vývoj betonů s vysokým obsahem popílku a ověření jeho trvanlivosti v různých prostředích." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226741.

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This thesis contains two main parts: theoretical and experimental. The theoretical part deals with summarization knowledge of high-volume fly ash (HVFA) concretes. Among others, there are mentioned processes of producing of fly ash, characteristic features and resistance to aggressive environments of HVFA concretes. The theoretical part ends with a suitable example of practical application. In the practical part were tested properties of nine different mixtures containing 40%, 50% and 60% replacement by weight of the cement by fly ash. They were compared with the reference mixtures without fly

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Heyns, M. W., and M. Mostafa Hassan. "South Africa Class F Fly Ash for roads : physical and chemical analysis." Interim : Interdisciplinary Journal, Vol 13, Issue 3: Central University of Technology Free State Bloemfontein, 2013. http://hdl.handle.net/11462/310.

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Published Article<br>Fly Ash is a by-product at thermal power stations, also otherwise known as residues of fine particles that rise with flue gases. An industrial by-product may be inferior to the traditional materials used construction applications, but, the lower the cost of these inferior materials make it an attractive alternative if adequate performance can be achieved. The objective of this study is to evaluate the chemical and physical effectiveness of self-cementing fly ashes derived from thermal power stations for construction applications with combined standards. Using laboratory te

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Ali, Hatim, and Mostafa H. A. Mohamed. "Assessment of lime treatment of expansive clays with different mineralogy at low and high temperatures." Elseveir, 2019. http://hdl.handle.net/10454/17536.

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Yes<br>This paper examines the impacts of clay mineralogy on the effectiveness of lime stabilisation at different temperatures. A comprehensive experimental programme was conducted to track down the evolution of lime-clay reactions and their durations through monitoring the evolution of strength gain at predetermined times using the Unconfined Compressive Strength (UCS) test. The study examined clays with different mineralogy compositions comprising Na+ Bentonite and Ball (Kaolinite) clay. Four different clays were tested including 100% bentonite, 100% Ball clay and two clay mixtures with rati

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Unsal, Saglik Asli. "Alkali-silica Rectivity And Activation Of Ground Perlite-containing Cementitious Mixtures." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12611249/index.pdf.

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Perlite is a volcanic mineral. The latest investigations on ground perlite showed that it is suitable for pozzolanic usage. Thus, it is of vital importance especially for countries rich in perlite such as Turkey. The aim of this study is to investigate the advantages and problems associated with using perlite in concrete and to identify accurate methods and amounts of use for producing durable cementitious mixtures. Within the scope of this study, the alkali-silica reactivity of perlite containing cementitious mixtures were compared using four different methods. Expansion mechanism of the mixt

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Roubal, David. "Vývoj vysokopevnostních betonů s vysokým obsahem el. popílků." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392363.

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This diploma thesis deals with the study of high-strength, high-volume fly ash concrete. The theoretical part of this thesis focuses on the detailed characteristic and main principles of high-strength concrete, high-volume fly ash concrete. In addition, according to the findings, the technology of high-strength and high-volume fly ash concrete, including principles of high strength, has been described. On the basis of the findings, high-strength, high-volume fly ash concrete for specific compressive strengths has been designed and created in the experimental section. These concretes were then

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Idir, Rachida. "Mécanismes d'action des fines et des granulats de verre sur la réaction alcali-silice et la réaction pouzzolanique." Thèse, Université de Sherbrooke, 2009. http://savoirs.usherbrooke.ca/handle/11143/1934.

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Recycling composite glass with different colours in order to be manufactured into new glass products is at present not economically viable. Therefore, the search for new issues other than stockpile areas or dumping sites could be a serious opportunity. To a certain extent, one of the possible solutions is to use the recycled glass in manufacturing cements and in the preparation of concrete mixtures. However, it is essential to manage the two main behaviours that the glass can have when used in cement-based materials: (1) the use of glass as coarse aggregates reveals harmful behaviour related t

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Bayer, Petr. "Použitelnost ložového popele z vitrifikovaného lignitového uhlí v kompozitních cementech." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2014. http://www.nusl.cz/ntk/nusl-217052.

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Předložená magisterská práce se zabývá možným použitím vitrifikovaného lignitového lóžového popele jako náhrada slinku v kompozitních cementech. Byly zkoumány vlivy přidaného vitrifikovaného lóžového popele, jeho jemnosti, alkalických roztoků a jejich koncentrací. Byly připraveny kompozitní cementy v souladu s normou DIN EN 197 – 1. V těchto cementech bylo nahrazeno 30 % slinku vitrifikovaným lóžovým popelem. Konkrétně byly připraveny kompozitní cementy s vitrifikovaným lóžovým popelem o jemnosti 5549 cm2/g a 8397 cm2/g. Dále byly přidány alkalické roztoky hydroxidů a síranů vždy o dvou různýc

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Book chapters on the topic "Pozzolanic Reactions"

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Dodson, Vance H. "Pozzolans and the Pozzolanic Reaction." In Concrete Admixtures. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4757-4843-7_7.

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Rademaker, P. D., and R. B. Wiegers. "The Processing of Industrial Waste for Immobilization and/or Recycling Applying Pozzolanic Reactions." In Environmental Technology. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3663-8_52.

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Artioli, G., M. Secco, A. Addis, and M. Bellotto. "5. Role of hydrotalcite-type layered double hydroxides in delayed pozzolanic reactions and their bearing on mortar dating." In Cementitious Materials, edited by Herbert Pöllmann. De Gruyter, 2017. http://dx.doi.org/10.1515/9783110473728-006.

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Salvador, S. "Prototyping Flash Calciners for the Manufacture of Synthetic Pozzolana from Kaolinite Clay." In Flash Reaction Processes. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0309-1_12.

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Birgisson, Bjorn, and Mahir Dham. "Optimization of Clay Addition for the Enhancement of Pozzolanic Reaction in Nano-modified Cement Paste." In Nanotechnology in Civil Infrastructure. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-16657-0_8.

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Criaud, A., and G. Cadoret. "HPCs and Alkali Silica Reactions. The Double Role of Pozzolanic Materials." In High Performance Concrete. CRC Press, 2018. http://dx.doi.org/10.1201/9780203752005-19.

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"pozzolanic reaction." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_163318.

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Conference papers on the topic "Pozzolanic Reactions"

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Ukrainczyk, Neven, Jure Zlopaša, Eduardus Koenders, Camila Aparecida Abelha Rocha, and Romildo Dias Toledo Filho. "Pozzolanic Reactions in Cementitious Materials for Subsurface Applications." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24665.

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Silica fume (SF) is used as a constituent to formulate cementitious materials for subsurface (oil-well) applications, e.g. by the offshore industry. Using green supplementary pozzolanic materials like silica fume could both improve the material’s performance and the footprint of the sustainable solution. X-ray diffraction and isothermal calorimetry were employed to investigate the evolution of cement paste hydration (water to binder ratio 0.44) after 14 h, 3, 7, and 28 days of curing. Experimental results are presented for both cement pastes made of Class G Portland cement and for a blended pa

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Krishnan, Padmaja, Min-Hong Zhang, and Richard Liew. "Pozzolanic reactions in ultra-high performance concrete containing silica fume and fly ash." In Fifth International Conference on Sustainable Construction Materials and Technologies. Coventry University and The University of Wisconsin Milwaukee Centre for By-products Utilization, 2019. http://dx.doi.org/10.18552/2019/idscmt5106.

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Bui, Trinh, Yuko Ogawa, Kenichiro Nakarai, and Kenji Kawai. "Effect of Injection of NaOH Solution on Pozzolanic and Hydration Reactions in Low-Calcium Fly Ash Cement Paste." In Fourth International Conference on Sustainable Construction Materials and Technologies. Coventry University, 2016. http://dx.doi.org/10.18552/2016/scmt4s196.

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Koenders, Eduardus, Camila Aparecida Abelha Rocha, Romildo Dias Toledo Filho, and Neven Ukrainczyk. "Modeling Pozzolanic Systems for Subsurface Cementitious Systems." In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-10916.

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The secondary pozzolanic reaction mechanism has been modeled explicitly in the Delft hydration model Hymostruc. The model calculates the progress of the hydration process as a function of the particle size distribution, the water cement ratio, the temperature and the cement and pozzolanic chemistry. The consumption of portlandite due to the activation of the pozzolanic materials is shown in detail. The numerical results are validated by an experimental testing plan on G-cement and 8% of silica fume and a water to cementitious ratio of 0.44. The simulated development of portlandite and degree o

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FERREIRA MENDES, BEATRIZ, Carlos Kenichi Suzuki, Marco César Prado Soares, MURILO FERREIRA MARQUES DOS SANTOS, EGONT ALEXANDRE SCHENKEL, and ERIC FUJIWARA. "Study of activation energy and reaction parameters on the pozzolanic reaction using quartz and silica nanoparticles." In XXV Congresso de Iniciação Cientifica da Unicamp. Galoa, 2017. http://dx.doi.org/10.19146/pibic-2017-78252.

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Silitonga, Ernesto, Rachmat Mulyana, Hamidun Batubara, Enny Sinaga, and Jintar Tampubolon. "Effect of Initial Characteristic on Promoting the Pozzolanic Reaction in Soil Solidification Work." In International Conference of Science, Technology, Engineering, Environmental and Ramification Researches. SCITEPRESS - Science and Technology Publications, 2018. http://dx.doi.org/10.5220/0010082402580262.

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Santra, Ashok Kumar, B. R. Reddy, Feng Liang, and Rocky Fitzgerald. "Reaction of CO2 With Portland Cement at Downhole Conditions and the Role of Pozzolanic Supplements." In SPE International Symposium on Oilfield Chemistry. Society of Petroleum Engineers, 2009. http://dx.doi.org/10.2118/121103-ms.

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Igarashi, S. "Effects of pozzolanic reaction on the evolution of coarse capillary pore structure and phase constitution in cement pastes with mineral admixtures." In ConcreteLife'06 - International RILEM-JCI Seminar on Concrete Durability and Service Life Planning: Curing, Crack Control, Performance in Harsh Environments. RILEM Publications SARL, 2006. http://dx.doi.org/10.1617/291214390x.010.

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Reports on the topic "Pozzolanic Reactions"

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Buck, Alan D. Use of Pozzolan or Slag in Concrete to Control Alkali-Silica Reaction and Sulfate Attack. Defense Technical Information Center, 1988. http://dx.doi.org/10.21236/ada198810.

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