HISTORY OF CEMENT ADMIXTURES
نویسندگان
چکیده
منابع مشابه
Mechanical Energy Dissipation Using Cement-Based Materials with Admixtures
ACI Materials Journal, V. 110, No. 3, May-June 2013. MS No. M-2011-272.R1 received April 5, 2012, and reviewed under Institute publication policies. Copyright © 2013, American Concrete Institute. All rights reserved, including the making of copies unless permission is obtained from the copyright proprietors. Pertinent discussion including author’s closure, if any, will be published in the March...
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When cement-based materials are transported at a construction site, they undergo high pressures during the pumping process. The rheological properties of the materials under such high pressures are unknown, and estimating the workability of the materials after pumping is a complex problem. Among various influential factors on the rheology of concrete, this study investigated the effect of miner...
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Because most shrinkage-reducing admixtures (SRAs) significantly reduce the surface tension of a cement paste pore solution, they will naturally influence all physical properties and processes that are dependent in some way on surface tension. Such properties include internal relative humidity, capillary stresses, and freezing point depression, all via the Kelvin equation and its variants (Kelvi...
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A simple flow injection system using three 3-way solenoid valves as an electric control injection valve and with a simple home-made chloride ion selective electrode based on Ag/AgCl wire as a sensor for determination of water soluble chloride in admixtures and aggregates for cement has been developed. A liquid sample or an extract was injected into a water carrier stream which was then merged w...
متن کاملEngineering Self Healing capacity of cement based materials through crystalline admixtures
ID No:180 ABSTRACT In this paper aims a thorough characterization will be performed of the effects of crystalline admixtures, currently employed as porosity reducing admixtures, on the self-healing capacity of the cementitious composites, i.e. their capacity to completely or partially re-seal cracks and, in case, also exhibit recovery of mechanical properties.In this paper aims a thorough chara...
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ژورنال
عنوان ژورنال: Doboku Gakkai Ronbunshu
سال: 1991
ISSN: 0289-7806,1882-7187
DOI: 10.2208/jscej.1991.426_19