Quasi -static Mechanical Properties of SFRC under Uni -axial Compression
JIAO Chu -jie, SUN Wei, ZHOU Yun
DOI:10.11835/j.issn.1674-4764.2006.02.016
Received November 15, 2005,Revised November 15, 2005, Accepted , Available online July 01, 2015
Volume ,2006,Pages 56-
- Abstract
Using WAW-2000 a multifunction servo-controlled testing machine,uniaxial quasi-static compression experiments for the steel fiber reinforced concrete(SFRC) were conducted with three strain rates.The volume fraction(V_f)of SFRC ranged from 0% to 3%,and the matrix was C50 concrete.The whole stress-strain curves of matrix and SFRC were obtained,and the results showed that with the increase of V_f,the compressive strength increased slowly,while the toughness increase quickly.With the increase of the strain rate,the strength of SFRC increased,but the toughness decreased,and the more the Vf,the less decreasing of the toughness.The results also showed that the elastic modulus and Poisson's ratio of SFRC were not sensitive material parameters,and with the increase of V_f,the former raised slightly and the latter decreased a little,respectively.A well suited numerical expression of the compressive stress-strain curve applicable to SFRC was put forward.