FREEZE/THAW PERFORMANCE OF CONCRETE USING GRANULATED RUBBER CRUMB

作     者：A.Richardson K.Coventry U.Dave J.Pienaar 

作者机构：Northumbria UniversityNewcastle upon TyneUK Nirma UniversityIndia 

出 版 物：《Journal of Green Building》 (绿色建筑学报（英文）)

年 卷 期：2011年第6卷第1期

页      面：83-92页

学科分类：08[工学] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 

主　　题：rubber crumb concrete freeze/thaw protection sustainability recycled tyres 

摘      要：This paper evaluates the properties and use of recycled rubber tyres in the form of rubber crumb as a freeze/thaw protection agent when used in *** scrap tyres in the form of rubber crumb in concrete could benefit the environment by contributing to the percentage of tyres used for a variety of recycling processes such as carpet underlay or tyre derived fuel,thus reducing disposal of tyres to landfill sites and the chemical usage of air entraining agents as a means of achieving freeze/thaw *** cubes of 100mm were produced from design mixes which have been classified as plain,air entrained and rubber crumb and subjected to freeze/thaw cycles at 5 days of *** was conducted in water to ensure full saturation of pores and maximum stress on the concrete *** rubber crumb and plain concrete mixes were compared against the freeze/thaw performance of that entrained with *** entrainment is known to protect against freeze/thaw *** crumb when used at a 0.5%addition by volume provided the optimum freeze/thaw protection whilst maintaining the maximum compressive *** research shows that rubber crumb was effective at providing freeze/thaw protection albeit with a reduced compressive strength when compared to air entrained *** practical constraints of the test program were time and freezer space so the test was limited to 50 freeze/thaw cycles,which was sufficient for conclusions to be *** paper contributes to the understanding of the effects of varying doses of rubber crumb in concrete when used as a freeze/thaw protection *** final compressive strength of the concrete mixes tested at freeze/thaw and non freeze/thaw conditions are *** compaction of concrete is raised as an area of concern with regard to rubber particle separation within the plastic phase of the concrete’s life.