Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 96, Issue -, Pages 368-377Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2015.08.095
Keywords
Ultra high performance concrete; Hydration; Microstructure; Mechanical property; Dimensional stability; Durability
Categories
Funding
- National Science Foundation of China [51378196, U1305243]
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Ultra high performance (UHPC) is a new cement based material, and it has aroused interest around the world since it was introduced in the early 1990s. Part I reviewed the theoretical principles, raw materials selection, mixture design and preparation techniques for UHPC. This part II reviewed the hydration, microstructure, mechanical properties, dimensional stability and durability of UHPC. Finally, some needs for future studies of UHPC are suggested. The portlandite of UHPC is much lower than that in the normal concrete. Heat curing could promote secondary hydration between mineral admixtures and Ca(OH)(2), and xonolite was formed when the temperature was over 250 degrees C. UHPC has a very low porosity, especially under heat curing. UHPC has a character of high strength, stiffness and superior durability, etc. (C) 2015 Elsevier Ltd. All rights reserved.
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