Strength properties of 10 mm timber clinker aggregate concrete

Abstract

This paper presents some experimental results and discusses the use of timber clinker as partial aggregate replacement in producing concrete. A number of tests were conducted to identify the physical properties of timber clinker aggregate such as density, aggregate impact value (AIV) test and aggregate crushing value (ACV) test, slump, X-Ray Fluorescence (XRF) test and compressive strength of timber clinker aggregate concrete. Two series of concrete mixes with Supracoat SP1000(C0, C10, C20, C30) and without Supracoat SP1000(CA0, CA10, CA20, CA30) with various percentage of 0%, 10%, 20% and 30% 10 mm sieve size timber clinker aggregate were used as partial replacement in producing the concrete. A total of forty 150 x 150 x 150 mm cubes samples were prepared for both series of concrete mixes and tested at 7, 14 and 28 days of water curing. The results showed that the timber clinker aggregate concrete gained highest compressive strength for both series of concrete mixes, that is, C20 and CA20 with results of 37 MPa and 34 MPa respectively. The optimum percentage use of timber clinker aggregate in producing the concrete was 20%. This is because exceeded percentage would decrease the compressive strength. Here, Supracoat SP1000 was added in order to improve the concrete slump. The physical properties test had contribute to the concrete strength development. Based on the results and observation conducted, this study suggested that timber clinker aggregate has successfully use as partial replacement in producing concrete and performed better strength development