Early Microstructure and Shrinkage Development of UHPC

Author(s): Jianhui Liu, Caijun Shi and Zemei Wu
Paper category: Proceedings
Book title: 3rd International RILEM Conference on Microstructure Related Durability of Cementitious Composites
Editor(s): Changwen Miao, Wei Sun, Jiaping Liu, Huisu Chen, Guang Ye and Klaas van Breugel
Print-ISBN: 978-2-35158-188-9
e-ISBN: 978-2-35158-189-6
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 123-140
Total Pages : 18
Language : English

Abstract: Ultra-high performance concrete (UHPC) refers to cement-based materials exhibiting compressive strength higher than 150 MPa, high ductility and excellent durability. High cracking tendency of UHPC derived from autogenous shrinkage can be a concern due to its high binder content and low water to binder ratio. This paper reviews early microstructure and shrinkage development of UHPC. The effect of supplementary cementitious materials, such as silica fume, slag, fly ash, limestone powder, rice husk ash and nano-materials, on hydration and microstructure are reviewed. The effect of cement content, water content, aggregate, admixtures, pozzolanic materials, curing conditions, and fiber on the shrinkage of UHPC were summarized. Different methods have been developed to compensate and/or reduce the early-age shrinkage of UHPC.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00