Affiliation:
1. Liaoning Province Building Science Research Institute Co.Ltd
2. Shenyang Urban Construction University
Abstract
In order to reduce the environmental burden and the energy consumption of PVA fiber reinforced high toughness cementitious composites, special focus is placed on the influence of fly ash type and content and curing type on the flexural performance of high toughness cementitious composites through four-point bending tests. The high toughness cementitious composites without fly ash have been used in the program for comparison purpose. The tests results show that, compared with the basic high toughness cementitious composites, the flexural strength decreases and the deflection increases with the s/b increasing when the fly ash is added. The increase in fly ash content results in an improvement of strain hardening property and increases in both flexural strength and deflection, which show that fly ash is benefit to the pseudo strain hardening performance. However the effects of fly ash type and curing type are not obvious on the load but obvious on the deflection. The deflection of high toughness cementitious composites with type I fly ash or water curing is higher than that of type II or standard curing. It is demonstrated that all the high toughness cementitious composites studied in this paper exhibit strain-hardening and multiple cracking through adding fly ash.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference6 articles.
1. Xu Shilang, Cai Xiangrong, Basic Mechanical Properties of Ultra High Toughness Cementitious Composite, SHUILI XUEBAO, 2009, 40 (9):1055-1063.
2. Huang, BoTao; Li QingHua; Xu ShiLang et al, Frequency Effect on the Compressive Fatigue Behavior of Ultrahigh Toughness Cementitious Composites: Experimental Study and Probabilistic Analysis. Journal of Structural Engineering (ASCE), 2017, 143(8): 04017073.
3. Xiangrong Cai, Baiquan Fu. An analytical study on the complete strain hardending process of ultra high toughness cementitious composites under direct tension load. Engineering Fracture Mechanics, 2013,102:249-256.
4. Victor C. Li, Michael Lepech, Shuxin Wang et al, Development of Green ECC for Sustainable Infrastructure Systems. In Proc. Int'l Workshop on sustainable Development and Concrete Technology, Beijing, China, Ed. K. Wang, Published by Iowa State Univ., 2004,181-192.
5. Victor C. Li, Reflections on the Research and Development of Engineered Cementitious Composites (ECC), Proceedings of the JCI International Workshop on Ductile Fiber Reinforced Cementitious Composites (DFRCC)-Application and Evaluation (DRFCC-2002), Takayama, Japan, 2002, 8:1-21.
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