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Review Article

AJAS. 2020; 1(1): 22-27


Physical and Mechanical properties of expanded polystyrene lightweight aggregate concrete

Abdel Nader Khalil Aldabar, Osama Mohamed Khalifa, Abdulmutaleb Mohamed Ahmidan.

Abstract
The aim of this study to conducted to produce a new type of concrete Which is used in the production of non-loaded building partitions. As different proportions of polystyrene (synthetic cork) were added as a percentage of cement. This material was chosen because of its low density compared to other types of aggregate used in the manufacture of concrete, especially concrete used in thermal insulation. In addition to its great availability in landfills, which are considered one of the most important environmental wastes that threaten human health and all elements of the environment. The study methodology was focused on adding raw materials of known origin and properties, In different proportions to obtain the best reliable results and study the physical and mechanical properties of lightweight concrete, and perform stress, tensile and thermal insulation tests and compare them with ordinary concrete. This study was used to produce light weight polystyrene concrete with rate of (1.5,3,5and10) % of cement weight. Compressive strength, indirect tensile strength, estimated modulus of elasticity (E) and bulk density tests were made on more than 60 specimens at age of 7 and 28 days. The results show that the addition of polystyrene (PS) with range of (1.5~10) %of cement weight is improve the bulk density strength with (14.8~48.68) %, the28-day compressive strength range is from (10.6~0.74) MPa, indirect tensile strength range is from (3.57~0.224) MPa, density range is from (2.43~1.25) ton/m3. The scope of this study is to suitability of this type of concrete to be used in concrete masonry units of non-bearing walls.

Key words: Polystyrene, Lightweight concrete, Compressive strength, Indirect tensile strength, bulk density, modulus of elasticity.


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