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A review of autogenous shrinkage models of concrete
Journal of Building Engineering, 2021Abstract For concrete with low water-to-binder ratio, the autogenous shrinkage often takes up most of the total shrinkage. In restrained structures, this kind of shrinkage will produce tensile stress. Once the tensile stress exceeds the tensile strength , it will lead to cracks and seriously endanger the durability of the structure.
Shengwen Tang
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Effects of triethanolamine on autogenous shrinkage and drying shrinkage of cement mortar
Construction and Building Materials, 2021Abstract Impacts of triethanolamine (TEA) on autogenous shrinkage, drying shrinkage and strength development of cement mortars were investigated. Hydration kinetics, pore structure and microstructure of hardened cement pastes (hcps) incorporated with TEA were systematically analyzed to reveal the working mechanism of TEA.
Hui Liu +5 more
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Autogenous Shrinkage Development in HPC
High Performance Materials in Bridges, 2003This paper analyzes the influences of the amount of binder, percentage of silica fume, water-to-binder (w/b) ratio, and the types of superplasticizer, cement, and aggregate, respectively, on both autogenous and total shrinkage of high performance concrete.
Drago Saje, Franc Saje
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Chemical shrinkage and autogenous shrinkage of hydrating cement paste
Cement and Concrete Research, 1995Abstract It is well known that the absolute volume of cement plus water decrease with progressive hydration. In this study, chemical shrinkage of cement was calculated from chemical equation of hydration, it was compared with observed one. Definition of chemical shrinkage and autogenous shrinkage was made and relationship between them was clearly ...
Ei-ichi Tazawa +2 more
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Chemical shrinkage and autogenous shrinkage of Portland cement—metakaolin pastes
Advances in Cement Research, 1998Portland cement (PC)-metakaolin (MK) pastes of compositions 0, 5, 10, 15, 20 and 25% MK and water/binder ratio 0·55 have been subjected to tests for chemical shrinkage, autogenous shrinkage and expansion during soaking. Chemical shrinkage was carried out in 200 ml containers on water-covered 12 mm thick layers of paste, and the volume changes were ...
S. Wild, J. M. Khatib, L. J. Roose
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Effect of fly ash on autogenous shrinkage
Cement and Concrete Research, 2005The correlation between autogenous shrinkage and degree of hydration of fly ash was determined with the selective dissolution method. Then, the relationship between the degree of hydration of fly ash and autogenous shrinkage was examined. The results showed that the degree of hydration of fly ash increased as its Blaine surface area increased.
Toyoharu Nawa
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Roadmap for autogenous shrinkage control of UHPC
2021Ultra-high-performance concrete (UHPC) demonstrates extremely large autogenous shrinkage due to its high content of cement and very low water-to-binder ratio (w/b). Many techniques can be used to mitigate the autogenous shrinkage developed in cement-based materials. Based on their action mechanisms, they can be classified into the following categories:
Li Yang, Caijun Shi*, Zemei Wu
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Autogenous Shrinkage in Plain Cement Mixtures
Key Engineering Materials, 2008Determination of a realistic model for the estimation of autogenous shrinkage in plain cement mixtures has been an ongoing research among researchers in high performance concrete. While no standard test method exists for the determination of autogenous shrinkage, various researchers have designed different test methods for measurement of autogenous ...
Vinod Rajayogan, Obada Kayali
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An Experimental Study of Autogenous and Drying Shrinkage
2017Shrinkage of concrete is the time-dependent strain in an unloaded and unrestrained specimen at constant temperature. It is usually considered to be the sum of drying shrinkage and autogenous shrinkage. Drying shrinkage is the reduction in volume caused principally by the loss of water during the drying process and this continues perhaps for years after
R. Ian Gilbert +4 more
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Autogenous Control of Autogenous Shrinkage
SP-256: Internal Curing of High Performance Concrete: Lab and Field Experiences, 2008openaire +1 more source