Optimization of shrinkage and crack resistance performance of Engineered Cementitious Composites (ECC)

Author

Xinqi, Mao ; Zhao, T.J. ; Zhang, P.

Author_Institution

Mech. & Electr. Eng., Qingdao Agric. Univ., Qingdao, China

fYear

2011

fDate

22-24 April 2011

Firstpage

534

Lastpage

538

Abstract

Optimization of shrinkage and crack resistance performance of Engineered Cementitious Composites (ECC) is investigated due to ECC with higher drying shrinkage. Free shrinkage tests were used to research the influence of fiber content, superplasticizer (SP) and finely ground quartz powder (QP) on the total drying shrinkage value of ECC. Restrained drying shrinkage tests (ring tests) were used to research the effect of fiber content, superplasticizer (SP) and finely ground quartz powder (QP) on crack resistance performance of ECC. The results of the tests show that fiber content has little effect on the total drying shrinkage value of ECC in most cases and SP, QP can slightly reduce it. But fiber content has significant effect on crack resistance performance of ECC and SP, QP can further enhance it. The maximum crack width can be limited to 40~100μm. It is very important for the durability of ECC.

Keywords

cements (building materials); composite materials; cracks; plasticisers; shrinkage; crack resistance performance; drying shrinkage; engineered cementitious composites; fiber content; finely ground quartz powder; optimization; shrinkage tests; superplasticizer; Materials; Optical fiber testing; Resistance; Steel; Strain; Stress; Workability; ECC; crack resistance; crack width; free drying shrinkage; restrained drying shrinkage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on

Conference_Location

Lushan

Print_ISBN

978-1-4577-0289-1

Type

conf

DOI

10.1109/ICETCE.2011.5774521

Filename

5774521