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原文传递 Rubber Particles from Recycled Tires in Cementitious Composite Materials.

题名：	Rubber Particles from Recycled Tires in Cementitious Composite Materials.
作者：	Huynh-H.; Raghavan-D.; Ferraris-C.F.
关键词：	Composite-materials; Recycled-tires; Rubber-particles; Cementitious-.;Fibers-; Granular-rubber; Plastic-shrinkage-cracking.
摘要：	In the present study, the influence of the shape of rubber particles on mechanical properties ofmortar was examinedby using rubber granules ofabout 2 mm in diameter (GR 2) and two sizes offibrous rubber (one being about 5.5 mm long and about 1.2 mm diameter, and the other being about 10.8 nun long and about 1.8 mm in diameter). The rationale for using fiber-shaped rubber particles is that the addition of fibers (steel, glass, carbon, polypropylene) to concrete has resulted in concrete which is less prone to brittle failure and to plastic shrinkage cracking (15-17). For convenience, in this exploratory study, mortar was used instead of concrete in the beliefthat the effects on mortar and concrete would be similar. As expected, this study confirmed the findings of previous work that granular rubber decreases compressive and flexural strengths. An encouraging discovery was that plastic shrinkage cracking can be reduced by the addition of sufficient fibrous rubber. Further investigations are required to verify that similar benefits can be obtained by adding rubber to concrete.
报告类型：	科技报告