Fly ash influences on tensile behavior of SHCC

Author(s): S. Gao, Z. Q. Jin, Q. Y. Li
Paper category: Proceedings
Book title: Proceedings of the Seventh International Conference on Concrete under Severe Conditions – Environment and Loading
Editor(s): Z.J. Li, W. Sun, C.W. Miao, K.Sakai, O.E. Gjørv, N.Banthia
ISBN: 978-2-35158-124-7
e-ISBN: 978-2-35158-134-6
Publisher: RILEM Publications SARL
Publication year: 2013
Pages: 54-59
Total Pages: 6
Language : English

Abstract: As a new class of fibre reinforced cementitious materials, mechanical behaviours of SHCC materials are characterized by various factors. Therefore, they are capable to be improved by various measures for various application purposes. Matrix tailoring is an encouraging technique to improve their mechanical behaviours. In the present paper, the Fly ash (FA) is
mixed into ECC to reduce the crack tip toughness by reducing the interface bond. The research results indicate that cement replacement FA can sharply reduce the interface bond. Besides, high FA content provided enough initial faults, and it also reduced the interfacial bond, therefore leading to an increased complementary energy, Hence, achieving a more ductile behaviour. FA enhances the bridging function of fibre by extending matrix flaws. This also indicates that the particle shape of admixture is also very important for tensile behaviour.

Online publication : 2013
Publication type : full_text
Public price (Euros) : 0.00