Author : Tareq S. Al-Attar,Ahmed S. Ali,Bayan S. Al-Nu'man
Publisher : Elsevier Inc. Chapters
Release : 2012-11-12
ISBN : 0128090472
Language : En, Es, Fr & De
Book Description :
Reactive powder concrete, RPC, demonstrates greatly ultra-high strength and improved durability characteristics compared with traditional or even high performance concrete. The main purpose of the present investigation is to modify RPC by adding styrene butadiene rubber, SBR, as a polymer in percentages 6, 12, 14, and 18 by weight of cement to the original mixture. An experimental work had carried out to investigate the behavior and durability of the polymer modified reactive powder concrete, PMRPC, exposed to two types of oil products (gas oil and kerosene) in comparison with the original RPC. Metakaolin was used as a pozzolanic material. Teasing program was designed to include compression, initial surface absorption, total absorption, and permeability tests. The test period was extended to 180 days. Moreover, drying shrinkage strain was measured up to the age of 90 days. Tested specimens were grouped in three series after the age of 28 days. The first continued to be cured with water, meanwhile, the second cured with gas oil and the third with kerosene. The experimental results showed that, the PMRPC mixes exhibited superior performance in all tested properties than the original RPC, especially when exposed to oil products. This behavior could be related to the role of the polymer in filling the pores and cracks and thus improving the surface condition. It was concluded that the optimum percentage of added SBR was 14%. In addition, it was found experimentally that SBR could totally replace the highrange water reducing admixture in PMRPC. Finally, the main conclusion reached was that PMRPC could be used to construct durable oil storage tanks or at least be used as lining layers for storage tanks.