ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Fly ash and granulated blast-furnace slag, which are used as blends of Portland cement, arewaste materials produced in electric and energy industry. Due to excellent durability, low heat ofhydration, energy-saving, resource-conserving, and generally less expensive than ordinary Portlandcement, blends Portland cements is used increasingly in construction industry. Both ecology benefitand economic benefit can be achieved by using blended Portland cement.Addition of blended components to cement, especially such as fly ash or silica fume, will lead toa densification of the microstructure. The autogenous shrinkage deformation will increase and thefollowing autogenous shrinkage crack will do harm to durability of concrete structure. In this paper,based on the multi-component hydration model, a numerical program is built to predict autogenousshrinkage of ordinary Portland cement and blended Portland cement. The numerical programconsiders the influence of water to cement ratio, curing temperature, particle size distribution, cementmineral components on hydration process and autogenous shrinkage. The prediction result agreeswell with experiment result
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.569.261.pdf
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