USE OF EXPANDED POLYSTYRENE (EPS) BEADS  IN SILICA-FUME CONCRETE

LAWEND K. ASKAR; ISMAEL H. MOSA ALBARWARY; MAND K. ASKAR

doi:10.26682/sjuod.2019.22.1.5

LAWEND K. ASKAR Technical College of Engineering ;Duhok Polytechnic University; Kurdistan Region, Iraq
ISMAEL H. MOSA ALBARWARY Dept. of Road Construction ;Duhok Technical Institute ;Duhok Polytechnic University; Kurdistan Region, Iraq
MAND K. ASKAR Technical College of Engineering ;Duhok Polytechnic University; Kurdistan Region, Iraq

DOI: https://doi.org/10.26682/sjuod.2019.22.1.5

Keywords: Compressive Strength:, Silica Fume:, Polystyrene Granules:, light weight concrete:

Abstract

Concrete is a good constructional material as it posses enough compressive strength for structural purposes, in spite of that concrete has some dis–advantages, one of these main dis–advantages is its high density (2300-2400) kg/m³ .Many trials were made to minimize its density in different ways. Recently Expanded Polystyrene (EPS) granules (98% air) were added to the concrete for this purpose. In this investigation the concrete density is reduced by adding polystyrene granules to the silica-fume concrete. Silica-fume was added for enhancing the concrete strength and balances the loss in concrete strength due to the inclusion of polystyrene granules .Test results show that the inclusion of silica fume to the concrete improves its strength for both normal concrete and concrete of EPS beads. It is concluded that structural concrete (Strength > 17 MPa) with EPS beads can be manufactured when silica fume is added to concrete.

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