Experimental research on early-age cracking of self-compacting fiber reinforced cementitious composi

来源 :The 14th International Congress on the Chemistry of Cement ( | 被引量 : 0次 | 上传用户:LJX22766966
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  The objective of this study was to investigate the early-age (24h) cracking behavior of self-compacting fiber reinforced cementitious composites (SC-FRCC) with five different fiber volume fractions (Vf =0.1%, 0.2%,0.3%, 0.35% and 0.4%) within mortar matrixes.Slump flow was performed to assess the fresh properties of the prepared mixtures.Bending strength and compressive strength of the specimens were determined for the hardened properties.The restrained shrinkage knife-edge test was carried out to characterize the early-age cracking behavior of SC-FRCC.Test results show that polyvinyl alcohol (PVA) fibers in general are effective in controlling restrained shrinkage cracking in mortars at an early age.The 0.4% (by volume) PVA fiber-reinforced mortar exhibited superior crack resistance where no crack was found in the testing slab.
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