Academic literature on the topic 'Cementitious materials'

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Journal articles on the topic "Cementitious materials"

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Snellings, R., G. Mertens, and J. Elsen. "Supplementary Cementitious Materials." Reviews in Mineralogy and Geochemistry 74, no. 1 (January 1, 2012): 211–78. http://dx.doi.org/10.2138/rmg.2012.74.6.

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Lothenbach, Barbara, Karen Scrivener, and R. D. Hooton. "Supplementary cementitious materials." Cement and Concrete Research 41, no. 12 (December 2011): 1244–56. http://dx.doi.org/10.1016/j.cemconres.2010.12.001.

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Singh, Nakshatra B., and Shiv S. Das. "Nanoscience of cementitious materials." Emerging Materials Research 1, no. 4 (August 2012): 221–34. http://dx.doi.org/10.1680/emr.11.00022.

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Macphee, Donald, and Sidney Diamond. "Thaumasite in Cementitious Materials." Cement and Concrete Composites 25, no. 8 (December 2003): 805–7. http://dx.doi.org/10.1016/s0958-9465(03)00165-3.

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Krishnamoorthy, T. S., S. Gopalakrishnan, K. Balasubramanian, B. H. Bharatkumar, and P. Rama Mohan Rao. "Investigations on the cementitious grouts containing supplementary cementitious materials." Cement and Concrete Research 32, no. 9 (September 2002): 1395–405. http://dx.doi.org/10.1016/s0008-8846(02)00799-8.

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Wang, Juan, Yaoqun Xu, Xiaopeng Wu, Peng Zhang, and Shaowei Hu. "Advances of graphene- and graphene oxide-modified cementitious materials." Nanotechnology Reviews 9, no. 1 (May 30, 2020): 465–77. http://dx.doi.org/10.1515/ntrev-2020-0041.

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AbstractEmerging nanomaterials provide an invaluable opportunity for the development of cementitious materials. Many scholars have explored the influence of graphene (GP) and graphene oxide (GO) on the performance of the cementitious materials. This article reviews the previous research on the effect of GP and GO on the properties of cementitious materials. Detailed review of the mechanical properties and durability of cementitious materials containing GP or GO nanofilms is presented, and the mechanism is discussed. The mechanical properties of GO-cementitious materials are significantly enhanced. The optimal improvement of GO-modified compressive, flexural, and tensile strengths is 77.3%, 78.3%, and 78.6%, respectively. The durability of GO- and GP-modified cementitious material is compared with the control group. The incorporation of GP or GO significantly improves the sulfate attack resistance, and the transport properties can be decreased, while the frost resistance of GO- and GP-modified cementitious materials needs further research. This literature review shows that the microstructure of GO- and GP-modified cementitious material is improved in three aspects: accelerating the cement hydration, refining the pore structure, and hindering the crack propagation.
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Kumar Gupta, Ranjan. "Waste Ceramic Powder as Alternative Concrete - Based Cementitious Materials." International Journal of Science and Research (IJSR) 10, no. 8 (August 27, 2021): 557–61. https://doi.org/10.21275/sr21812180634.

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Lu, Cai Rong, Xue Liang Ge, Guo Xing Mei, Wei Bao Liu, Heng Wang, and Yao Li Qian. "Effect of Drought on Dry Shrinkage of Cementitious Materials." Advanced Materials Research 261-263 (May 2011): 606–10. http://dx.doi.org/10.4028/www.scientific.net/amr.261-263.606.

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Shrinkage stress of cementitious materials will generate if the dry shrinkage is restrained in drought condition. Shrinkage stress has influence on crack resistance of cementitious materials. The dry shrinkage of cementitious materials in different relative humidity was studied with Climate Simulation System. The dry shrinkage change law of concrete in 20°C, 60% relative humidity for 500 days and in 20°C, 10% relative humidity for 180 days was compared. The relation between water loss rate and shrinkage rate of cementitious materials in drought condition was analyzed.
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Lin, Wei Ting, Yuan Chieh Wu, An Cheng, and Sao Jeng Chao. "Engineering Properties of Fiber Cementitious Materials." Applied Mechanics and Materials 764-765 (May 2015): 42–46. http://dx.doi.org/10.4028/www.scientific.net/amm.764-765.42.

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Fiber cementitious materials are composed of fibers, pozzolan and cementitious. Addition of fibers in cementitious materials may enhance its mechanical properties, particularly tensile strength, and ductility. This project is aimed to evaluate the mechanical properties of fiber cementitious materials which comprise fibers and silica fume in the mixes. Test variables include dosage of silica fume, mix proportions, steel fiber dosage and type. Compressive strength, direct tensile strength and splitting tensile strength of the specimen were obtained through tests. Test results indicate that the splitting tensile strength, direct tensile strength, strain capacity and ability of crack-arresting increase with increasing steel fiber and silica fume dosages. The optimum composite is the mixture with 5 % replacement silica fume and 2 % fiber volume. In addition, the nonlinear regression analysis was used to determine the best-fit relationship between mechanical properties and test parameters.
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Baiee, Ameer. "DEVELOPMENT ULTRA-HIGH STRENGTH CEMENTITIOUS CHARACTERISTICS USING SUPPLEMENTARY CEMENTITIOUS MATERIALS." Journal of Engineering Science 28, no. 3 (September 2021): 111–15. http://dx.doi.org/10.52326/jes.utm.2021.28(3).10.

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For sustainability purposes, supplementary cementitious materials (SCMs) are considered essential components for gaining ultra-high strength properties of concrete and mortar. This study experimentally investigates the influence of single, binary, and ternary partial cement replacements of the SCMs on the performance of ultra-high-strength mortar. The investigated SCMs were included ground granulated blast furnace slag (GGBS), densified silica fume (DSF), un-densified silica fume (UDSF), and Fly ash (FA). Three replacements ratios were implemented; 10%, 20%, and 30% in addition to mortar without SCMs to work as a control mix for comparison reasons. 27 mixes were designed to quantify the replacement ratio that explains the best performance, through examining the workability, compressive and tensile strength of each mix. In addition, XRD test was carried out to identify the various decomposition phases of the hardened mortar. The results indicated that binary replacement of 15% GGBS and 15% UDSF exhibited the best performance among all other replacements ratios.
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Dissertations / Theses on the topic "Cementitious materials"

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Houk, Alexander Nicholas. "SELF-SENSING CEMENTITIOUS MATERIALS." UKnowledge, 2017. https://uknowledge.uky.edu/ce_etds/58.

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The study of self-sensing cementitious materials is a constantly expanding topic of study in the materials and civil engineering fields and refers to the creation and utilization of cement-based materials (including cement paste, cement mortar, and concrete) that are capable of sensing (i.e. measuring) stress and strain states without the use of embedded or attached sensors. With the inclusion of electrically conductive fillers, cementitious materials can become truly self-sensing. Previous researchers have provided only qualitative studies of self-sensing material stress-electrical response. The overall goal of this research was to modify and apply previously developed predictive models on cylinder compression test data in order to provide a means to quantify stress-strain behavior from electrical response. The Vipulanandan and Mohammed (2015) stress-resistivity model was selected and modified to predict the stress state, up to yield, of cement cylinders enhanced with nanoscale iron(III) oxide (nanoFe2O3) particles based on three mix design parameters: nanoFe2O3 content, water-cement ratio, and curing time. With the addition of a nonlinear model, parameter values were obtained and compiled for each combination of nanoFe2O3 content and water-cement ratio for the 28-day cured cylinders. This research provides a procedure and lays the framework for future expansion of the predictive model.
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Isaacs, Ben. "Self-healing cementitious materials." Thesis, Cardiff University, 2011. http://orca.cf.ac.uk/54220/.

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A general conclusion from the work is that both systems require considerable development before being ready for industrial application. However, of the two systems investigated, it is the latter which shows the greatest potential to not only greatly enhance the durability of cementitious composites, but also to improve their strength and ductility.
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Pheeraphan, Thanakorn. "Microwave curing of cementitious materials." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/12174.

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Peach, Benjamin. "Laser scabbling of cementitious materials." Thesis, University of Sheffield, 2015. http://etheses.whiterose.ac.uk/11853/.

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Laser scabbling of concrete is the process by which the surface layer of concrete may be removed through the use of a high power (low power density) laser beam. The aim of this study was to investigate the mechanism(s) responsible for laser scabbling. This was achieved in three stages. The first stage was a test series used to establish an experimental procedure for assessing the effects of various parameters that may be critical for the effectiveness of the process, such as material composition and initial moisture content. The second stage was a test series investigating the effect of concrete composition on laser scabbling. The first two test series identified that the driving force of laser scabbling in concretes originates from the mortar, therefore, the third test series concentrated on the factors that influence laser scabbling of mortars. Throughout the study, infra red recordings have been used to quantify laser scabbling behaviour, along with the volume removal due to laser scabbling and characterisation techniques such as XRF, DTA and TGA. The results suggest that scabbling is mainly driven by pore pressures, but strongly affected by other factors. The removal of free water from mortars prohibits scabbling, but resaturation allows mortar to scabble. A reduced permeability, either due to a reduction in the water/binder ratio or the use of 25% PFA replacement, enhances laser scabbling. Results show that the biggest effect of ageing is due to specimens drying. Mortars and cement pastes were seen to scabble at a constant rate, whereas concretes experienced a peak rate, after which volume removal reduced dramatically. Basalt aggregate concrete was less susceptible to laser scabbling than limestone aggregate concrete due to vitrification. A higher fine aggregate content increases volume removal and fragment sizes during laser scabbling.
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Brown, Nicholas John. "Discrete element modelling of cementitious materials." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/8011.

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This thesis presents a new bonded particle model that accurately predicts the wideranging behaviour of cementitious materials. There is an increasing use of the Discrete Element Method (DEM) to study the behaviour of cementitious materials such as concrete and rock; the chief advantage of the DEM over continuum-based techniques is that it does not predetermine where cracking and fragmentation initiate and propagate, since the system is naturally discontinuous. The DEM’s ability to produce realistic representations of cementitious materials depends largely on the implementation of an inter-particle bonded-contact model. A new bonded-contact model is proposed, based on the Timoshenko beam theory which considers axial, shear and bending behaviour of inter-particle bonds. The developed model was implemented in the commercial EDEM code, in which a thorough verification procedure was conducted. A full parametric study then considered the uni-axial loading of a concrete cylinder; the influence of the input parameters on the bulk response was used to produce a calibrated model that has been shown to be capable of producing realistic predictions of a wide range of behaviour seen in cementitious materials. The model provides useful insights into the microscopic phenomena that result in the bulk loading responses observed for cementitious materials such as concrete. The new model was used to simulate the loading of a number of deformable structural elements including beams, frames, plates and rings; the numerical results produced by the model provided a close match to theoretical solutions.
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Rad, Taghi. "Microstructural characteristics of recycled cementitious materials." Thesis, University of Hertfordshire, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340038.

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Mihai, Iulia. "Micromechanical constitutive models for cementitious composite materials." Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/24624/.

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A micromechanical constitutive model for concrete is proposed in which microcrack initiation, in the interfacial transition zone between aggregate particles and cement matrix, is governed by an exterior-point Eshelby solution. The model assumes a two-phase elastic composite, derived from an Eshelby solution and the Mori-Tanaka homogenization method, to which circular microcracks are added. A multi-component rough crack contact model is employed to simulate normal and shear behaviour of rough microcrack surfaces. It is shown, based on numerical predictions of uniaxial, biaxial and triaxial behaviour that the model captures key characteristics of concrete behaviour. An important aspect of the approach taken in this work is the adherence to a mechanistic modelling philosophy. In this regard the model is distinctly more rigorously mechanistic than its more phenomenological predecessors. Following this philosophy, a new more comprehensive crack-plane model is described which could be applied to crack-planes in the above model. In this model the crack surface is idealised as a series of conical teeth and corresponding recesses of variable height and slope. Based on this geometrical characterization, an effective contact function is derived to relate the contact stresses on the sides of the teeth to the net crack-plane stresses. Plastic embedment and frictional sliding are simulated using a local plasticity model in which the plastic surfaces are expressed in terms of the contact surface function. Numerical simulations of several direct shear tests indicate a good performance of the model. The incorporation of this crack-plane model in the overall constitutive model is the next step in the development of the latter. Computational aspects such as contact related numerical instability and accuracy of spherical integration rules employed in the constitutive model are also discussed. A smoothed contact state function is proposed to remove spurious contact chatter behaviour at a constitutive level. Finally, an initial assessment of the performance of the micromechanical model when implemented in a finite element program is presented. This evaluation clearly demonstrates the capability of the proposed model to simulate the behaviour of plain and reinforced concrete structural elements as well as demonstrating the potential of the micromechanical approach to achieve a robust and comprehensive model for concrete.
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Valori, Andrea. "Characterisation of cementitious materials by 1H NMR." Thesis, University of Surrey, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.510562.

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Unsworth, Hugh P. "Cementitious materials in waste containment, leach studies." Thesis, University of Dundee, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337409.

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Goldthorpe, Kathryn. "Stability of cementitious materials in saline environments." Thesis, University of Aberdeen, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361798.

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The complexity of cementitious matrices and their application in the immobilisation of radioactive waste has led to detailed examination of their ability to condition permeating water to high pH by both experimental and thermodynamic studies. This thesis considers the stability and solubility of pure hydrate phases: Ca(OH)2; CaO-SiO2-H2O gel, Ca:Si = 0.85, 1.1, 1.4, 1.8; 3CaO.Al2O3.6HzO; 3CaO.Al2O3.CaSO4.12H2O and 3CaO.Al2O3.3CaSO4.32H2O, and the phase formation and stability within CaO-SiO2-CaCO3-H2O and CaO-Al2O3-SiO2-H2O compositions aged in saline solutions, up to 1.5M NaCl and 0.05M MgSo4, at 25°, 55° and 85°C. The two main high pH conditioning phases of cementitious systems are Ca(OH)2 and C-S-H gel. Sodium chloride enhances the solubility of Ca(OH)2 and causes a slight reduction in the Ca:Si ratio of C-S-H gels by the progressive leaching of calcium. Silicate polymerisation within C-S-H phases is inhibited by sodium chloride though it is uncertain how this alters the crystallisation kinetics. The pH buffering capacity is maintained when aged in sodium chloride concentrations 0.5, 1.0 and 1.5M at 25°, 55° and 85°C. The stability of calcium sulfoaluminate aged in sodium chloride is greater than of 3CaO.Al2O3.6H2O, which is unstable with respect to 3CaO.Al2O3.CaCl2.10H2O in NaCl < 0.5M. These phases undergo a progressive phase change to the 3CaO.Al2O3.0.5CaSO4.0.5CaCl2.10-12H2O and 3CaO.Al2O3.CaCl2.10H2O at increasing aqueous Cl:SO4 ratios. The formation of a limited solid solution region within 3CaO.Al2O3.xCaSO4.l-xCaCl2.yH2O: 0.00 ≤ SO4:Cl ≤ 0.06, was characterised. In magnesium sulfate, 5 - 50m.mol/l, calcium within hydrate phases is progressively replaced by magnesium with formation of Mg(OH)2, MgO-SiO2-H2O gel, 4MgO.Al2O3.xH2O and gypsum. The pH conditioned by the resultant solid assembly decreases to less than that desirable for containment of radioactive waste, to < 9. Consideration of the phase formation and persistence within the CaO-SiO2-CaCO3-H2O and CaO-Al2O3-SiO2-H2O systems was examined in solutions containing both sodium chloride and magnesium sulfate. The chemical interactions observed were dominated by the replacement of calcium by magnesium within the solid phases with the formation and persistence of mixtures of Mg(OH)2, MgO-SiO2-H2O gel and gypsum. At low Mg:Ca-CO3 ratios the persistent stability of gehlenite hydrate at 25°C was observed in appropriate samples. The chemistry of the aqueous phase is dependent on the Mg:Ca-CaCO3 ratio as well as the Ca:Si ratio. At high Mg:Ca-CaCO3 ratios the high pH conditioning properties are destroyed and buffering occurs at a value below pH 9.
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Books on the topic "Cementitious materials"

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Pöllmann, Herbert, ed. Cementitious Materials. Berlin, Boston: De Gruyter, 2017. http://dx.doi.org/10.1515/9783110473728.

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Malhotra, V. M. Pozzolanic and cementitious materials. Amsterdam, The Netherlands: Gordon and Breach, 1996.

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DeHayes, SM, and D. Stark, eds. Petrography of Cementitious Materials. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 1994. http://dx.doi.org/10.1520/stp1215-eb.

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1953-, DeHayes Sharon M., Stark D, and Symposium on the Petrography of Cementitious Materials (1993 : Atlanta, Ga.), eds. Petrography of cementitious materials. Philadelphia, PA: ASTM, 1994.

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Conference on Advances in Cementitious Materials (1990 Gaithersburg, Md.). Advances in cementitious materials. Westerville, Ohio: American Ceramic Society, 1991.

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Soltesz, Steven M. Cementitious materials for thin patches. Salem, OR: Oregon Dept. of Transportation, Research Group, 2001.

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Pijaudier-Cabot, Gilles. Damage mechanics of cementitious materials. London: ISTE, 2012.

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1946-, Mai Y. W., ed. Fracture mechanics of cementitious materials. London: Blackie Academic & Professional, 1996.

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Rahman, Rehab O. Abdel, Ravil Z. Rakhimov, Nailia R. Rakhimova, and Michael I. Ojovan. Cementitious Materials for Nuclear Waste Immobilization. Chichester, UK: John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118511992.

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De Schutter, Geert, and Karel Lesage. Active Rheology Control of Cementitious Materials. London: CRC Press, 2023. http://dx.doi.org/10.1201/9781003289463.

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Book chapters on the topic "Cementitious materials"

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Gdoutos, Emmanuel E. "Cementitious Materials." In Fracture Mechanics, 387–401. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-35098-7_14.

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De la Torre, Ángeles G., Isabel Santacruz, Laura León-Reina, Ana Cuesta, and Miguel A. G. Aranda. "1. Diffraction and crystallography applied to anhydrous cements." In Cementitious Materials, edited by Herbert Pöllmann, 3–30. Berlin, Boston: De Gruyter, 2017. http://dx.doi.org/10.1515/9783110473728-002.

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Aranda, Miguel A. G., Ana Cuesta, A. G. De la Torre, Isabel Santacruz, and Laura León-Reina. "2. Diffraction and crystallography applied to hydrating cements." In Cementitious Materials, edited by Herbert Pöllmann, 31–60. Berlin, Boston: De Gruyter, 2017. http://dx.doi.org/10.1515/9783110473728-003.

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Raab, Bastian, and Herbert Pöllmann. "3. Synthesis of highly reactive pure cement phases." In Cementitious Materials, edited by Herbert Pöllmann, 61–102. Berlin, Boston: De Gruyter, 2017. http://dx.doi.org/10.1515/9783110473728-004.

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Lothenbach, Barbara, and Frank Winnefeld. "4. Thermodynamic modelling of cement hydration: Portland cements – blended cements – calcium sulfoaluminate cements." In Cementitious Materials, edited by Herbert Pöllmann, 103–44. Berlin, Boston: De Gruyter, 2017. http://dx.doi.org/10.1515/9783110473728-005.

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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, 147–58. Berlin, Boston: De Gruyter, 2017. http://dx.doi.org/10.1515/9783110473728-006.

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Kaden, R., and H. Poellmann. "6. Setting control of CAC by substituted acetic acids and crystal structures of their calcium salts." In Cementitious Materials, edited by Herbert Pöllmann, 159–90. Berlin, Boston: De Gruyter, 2017. http://dx.doi.org/10.1515/9783110473728-007.

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Stöber, S., and H. Pöllmann. "7. Crystallography and crystal chemistry of AFm phases related to cement chemistry." In Cementitious Materials, edited by Herbert Pöllmann, 191–250. Berlin, Boston: De Gruyter, 2017. http://dx.doi.org/10.1515/9783110473728-008.

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Gao, X., B. Yuan, Q. L. Yu, and H. J. H. Brouwers. "8. Chemistry, design and application of hybrid alkali activated binders." In Cementitious Materials, edited by Herbert Pöllmann, 253–84. Berlin, Boston: De Gruyter, 2017. http://dx.doi.org/10.1515/9783110473728-009.

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Pritzel, Christian, Torsten Kowald, Yilmaz Sakalli, and Reinhard Trettin. "9. Binding materials based on calcium sulphates." In Cementitious Materials, edited by Herbert Pöllmann, 285–310. Berlin, Boston: De Gruyter, 2017. http://dx.doi.org/10.1515/9783110473728-010.

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Conference papers on the topic "Cementitious materials"

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García-González, J., P. Lemos, A. Pereira, J. Pozo, M. Guerra-Romero, A. Juan-Valdés, and P. Faria. "Biodegradable Polymers on Cementitious Materials." In XV International Conference on Durability of Building Materials and Components. CIMNE, 2020. http://dx.doi.org/10.23967/dbmc.2020.017.

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"Supplementary Cementitious Materials for Sustainability." In SP-269: Concrete: The Sustainable Material Choice. American Concrete Institute, 2010. http://dx.doi.org/10.14359/51663719.

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"Influence of Supplementary Cementitious Materials on the Autogenous Self-Healing of Cracks in Cementitious Materials." In SP-320:10th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete. American Concrete Institute, 2017. http://dx.doi.org/10.14359/51701050.

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Coulbeck, Teig S. V., Isaac P. G. Hammond, Christopher J. Gooding, James K. Wither, Iasmi Sterianou, Dimitra Soulioti, and Evangelos Z. Kordatos. "Development of self-sensing cementitious materials." In Smart Structures and NDE for Industry 4.0, Smart Cities, and Energy Systems, edited by Kerrie Gath and Norbert G. Meyendorf. SPIE, 2020. http://dx.doi.org/10.1117/12.2558875.

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"Alternative Cementitious Materials: Challenges And Opportunities." In SP-305: Durability and Sustainability of Concrete Structures. American Concrete Institute, 2015. http://dx.doi.org/10.14359/51688587.

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Němeček, J., J. Němečková, and J. Němeček. "Micro-Scale Creep of Cementitious Materials." In Engineering Mechanics 2024. Institute of Solid Mechanics, Mechatronics and Biomechanics, Brno University of Technology, Brno, 2024. http://dx.doi.org/10.21495/em2024-214.

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Sakib, Nazmus, Sudharshan Raman, Azrul Mutalib, M. Jamil, and Daniel Looi. "Effects of supplementary cementitious materials on properties of cementitious grouts: A review." In 1st International Electronic Conference on Applied Sciences. Basel, Switzerland: MDPI, 2020. http://dx.doi.org/10.3390/asec2020-08532.

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Dry, Carolyn M., and Carrie Warner. "Biomimetic bonelike polymer cementitious composite." In Smart Structures and Materials '97, edited by Wilbur C. Simmons, Ilhan A. Aksay, and Dryver R. Huston. SPIE, 1997. http://dx.doi.org/10.1117/12.267119.

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"Steady-state diffusion characteristics of cementitious materials." In RILEM International Workshop on Chloride Penetration into Concrete. RILEM Publications SARL, 1997. http://dx.doi.org/10.1617/2912143454.010.

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Li, Mo, and Shuai Fan. "Intrinsic Self-Healing Process in Cementitious Materials." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.1502.

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Reports on the topic "Cementitious materials"

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Ucak-Astarlioglu, Mine, Jedadiah Burroughs, Charles Weiss, Kyle Klaus, Stephen Murrell, Samuel Craig, Jameson Shannon, Robert Moser, Kevin Wyss, and James Tour. Graphene in cementitious materials. Engineer Research and Development Center (U.S.), December 2023. http://dx.doi.org/10.21079/11681/48033.

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This project aims to determine the influence of laboratory-generated graphene (LGG) and commercial-grade graphene (CGG) on the chemical structure and compressive strength of graphene-cement mixtures. Determining the graphene-cement structure/processing/property relationships provides the most useful information for attaining the highest compressive strength. Graphene dose and particle size, speed of mixing, and dispersant agent were found to have important roles in graphene dispersion by affecting the adhesion forces between calcium silicate hydrate (CSH) gels and graphene surfaces that result in the enhanced strength of cement-graphene mixtures. X-ray diffraction (XRD), Raman, and scanning electron microscope (SEM) analyses were used to determine chemical microstructure, and compression testing for mechanical properties characterization, respectively. Based on observed results both LGG and CGG graphene cement mixtures showed an increase in the compressive strength over 7-, 14-, and 28-day age curing periods. Preliminary dispersion studies were performed to determine the most effective surfactant for graphene dispersion. Future studies will continue to research graphene—cement mortar and graphene—concrete composites using the most feasible graphene materials. These studies will prove invaluable for military programs, warfighter support, climate change, and civil works.
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2

Groeneveld, Andrew, and C. Crane. Advanced cementitious materials for blast protection. Engineer Research and Development Center (U.S.), April 2023. http://dx.doi.org/10.21079/11681/46893.

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Advanced cementitious materials, commonly referred to as ultra-high performance concretes (UHPCs), are developing rapidly and show promise for civil infrastructure and protective construction applications. Structures exposed to blasts experience strain rates on the order of 102 s-1 or more. While a great deal of research has been published on the durability and the static properties of UHPC, there is less information on its dynamic properties. The purpose of this report is to (1) compile existing dynamic property data—including compressive strength, tensile strength, elastic modulus, and energy absorption—for six proprietary and research UHPCs and (2) implement a single-degree-of-freedom (SDOF) model for axisymmetric UHPC panels under blast loading as a means of comparing the UHPCs. Although simplified, the model allows identification of key material properties and promising materials for physical testing. Model results indicate that tensile strength has the greatest effect on panel deflection, with unit weight and elastic modulus having a moderate effect. CEMTECmultiscale® deflected least in the simulation. Lafarge Ductal®, a commonly available UHPC in North America, performed in the middle of the five UHPCs considered.
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Sugama, T., and T. ,. Lance Brothers, Bour, D. Butcher. Self-degradable Cementitious Sealing Materials. Office of Scientific and Technical Information (OSTI), October 2010. http://dx.doi.org/10.2172/993804.

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4

Olek, Jan, and Chaitanya Paleti. Compatibility of Cementitious Materials and Admixtures. Purdue University, December 2012. http://dx.doi.org/10.5703/1288284315025.

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5

Flach, G. P. Degradation of Saltstone Disposal Unit Cementitious Materials. Office of Scientific and Technical Information (OSTI), August 2018. http://dx.doi.org/10.2172/1513682.

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Chandler, Mei, William Lawrimore, Micael Edwards, Robert Moser, Jameson Shannon, and James O'Daniel. Mesoscale modeling of cementitious materials : phase I. Engineer Research and Development Center (U.S.), June 2019. http://dx.doi.org/10.21079/11681/32980.

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7

Wijaya, Ignasius P. A., Eric Kreiger, and Asuf Masud. An elastic-inelastic model and embedded bounce-back control for layered printing with cementitious materials. Engineer Research and Development Center (U.S.), January 2024. http://dx.doi.org/10.21079/11681/48091.

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This paper presents a finite-deformation model for extrusion-based layered printing with cementitious materials. The evolution of mechanical properties as the printed material cures and stiffens results in nonphysical reduction in the magnitude of elastic strains when standard constitutive models are employed. This elastic recovery of the printing induced deformation contradicts the experimentally observed behavior of the printed cementitious materials that harden at a nearly-frozen deformed state. A thermodynamically motivated constraint on the evolution of elastic strains is imposed on the constitutive model to remedy the nonphysical bounce-back effect. An algorithm that is based on a strain-projection technique for the elastic part of deformation is developed that complements the inelastic response given by the Drucker–Prager model. It is then embedded in a finite strain finite element framework for the modeling and simulation of cure hardening and inelastic response of the early age cementitious materials. A ghost mesh method is proposed for continuous layer-wise printing of the material without the need for intermittent mesh generation technique or adaptive remeshing methods. The model is validated via comparison with experimental data and representative test cases are presented that investigate the mathematical and computational attributes of the proposed model.
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Kaplan, Daniel I., Shanna L. Estes, Yuji Arai, and Brian A. Powell. Technetium Sorption By Cementitious Materials Under Reducing Conditions. Office of Scientific and Technical Information (OSTI), July 2013. http://dx.doi.org/10.2172/1088223.

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Langton, C. Transport properties of damaged materials. Cementitious barriers partnership. Office of Scientific and Technical Information (OSTI), November 2014. http://dx.doi.org/10.2172/1288263.

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10

DOE. OCRWM Science and Technology Program Cementitious Materials Technologies. Office of Scientific and Technical Information (OSTI), October 2004. http://dx.doi.org/10.2172/840127.

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