Influence of Silica Fume and Thermal Damage on Uniaxial Tension Performance of PVC-SHCC

• Published in: Applied Mechanics and Materials Vol. 357-360; pp. 977 - 981
• Main Authors: Tian, Li, Wu, Rui Xue, Ma, Wan, Zhao, Tie Jun
• Format: Journal Article
• Language: English
• Published: Zurich Trans Tech Publications Ltd 01.01.2013
• Subjects: Thermal Damage; Uniaxial Tension; PVA-SHCC; Silica Fume (SF)
• ISBN: 3037857765; 9783037857762
• ISSN: 1660-9336; 1662-7482; 1662-7482
• DOI: 10.4028/www.scientific.net/AMM.357-360.977

As a new type of building materials, performance of SHCC admixed with silica fume and that exposed to different temperatures are of concern. Uniaxial tension test is conducted on specimens that with and without silica fume admixture, after being exposed to 6 different temperatures (20°C, 50°C, 100°C, 150°C, 200°C and 300°C) for 2 hours. The results show that the ultimate tensile strain of SHCC decreases along with the increase of temperature. However, the ultimate tensile strain remains above 1.2% when the temperature is less than 200°C. Incorporating silica fume into SHCC design indicates that the use of silica fume does not have much effect on the ultimate tensile strain of SHCC, but significantly improves the first cracking strength and ultimate strength of the material.