Study on Mixing Techniques and Mechanical Properties of Engineered Cementitious Composite

Author(s): Yanhua Guan, Yuanshun Qian, Renuan Sun, Zhi Ge, Zhiyong Cui, Tao Li
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: 365-369
Total Pages: 05
Language: English

Abstract: Engineered Cementitious Composite˄ECC˅is composed of short Polyvinyl Alcohol(PVA) fiber, Portland cement, fine sand, and water. The key of producing ECC is to distribute the fiber uniformly in the matrix. A new mixer was developed to produce larger amount of ECC. The flow of fresh ECC was tested to study the effects of mixing sequence and time on uniformity
and workability of ECC. The uniaxial tensile and four point bending tests were performed to evaluate the ductility. Results showed that the tensile strain was more than 3.5%. For the four point bending test, the deflection at middle point was more than 25 mm and could reach 40 mm. Cracks appear evenly at around 1mm spacing during the loading process. The crack width was
65 μm. The good workability and strain hardening performances of ECC showed that the newly developed mixer can be used to produce larger amount of ECC.

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