In this paper, the method to replace part of the concrete at the tensile bottom of one-way slabs with expansive SHCC has been used to improve cracking behavior and durability of RC members. This paper explores the structural application of…
In this paper, the method to replace part of the concrete at the tensile bottom of one-way slabs with expansive SHCC has been used to improve cracking behavior and durability of RC members. This paper explores the structural application of an expansive SHCC and the results of test on five simply supported slabs are described. The effect of expansive admixture and thickness of SHCC layer (20 and 40mm) on the ul- timate flexural load, first crack load, crack width and spacing, and the load-deflection relationship of one-way slabs was investigated. The results indicate that the use of SHCC cover at the bottom of slabs has significantly increased the initial crack load, yield load, and ultimate load, while the use of expansive admixture in SHCC material had little effect on those of one-way slabs with a SHCC layer. Considerable reduction in crack width and spacing was observed for slabs with a SHCC layer and this tendency is remarkable for slabs with an ex- pansive SHCC layer and thicker SHCC layer.