Experimental on shrinkage performance of ultra high performance concrete under sealed condition

Author(s): Li Cong, Luo Xia , Chen Baochun, Wei Jiangang
Paper category: Proceedings
Book title: 1st International Conference on UHPC Materials and Structures
Editor(s): Caijun Shi and Dehui Wang
ISBN: 978-2-35158-164-3
e-ISBN: 978-2-35158-165-O
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 422-431
Total Pages: 10
Language: English

Abstract: There are two groups of tests on shrinkage of UHPC under the sealed and un-sealed conditions in this paper, the effects of steel fiber content and fly ash on autogenous shrinkage of UHPC was studied. In addition, a more rational assembly method for dial gauge was proposed and employed, which improves measurement precision. Test results show that the shrinkage of UHPC rapidly grows at early age, 70%~90% shrinkage was measured in the first 14 days after placing. Fly ash attributes large influence to shrinkage of sealed UHPC while steel fiber volume has a relatively small effect to it; the incorporation of fly ash could result in a "hysteresis effect." Based on the test results, a realistic (autogenous) shrinkage model of sealed UHPC has been presented.

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