Characteristics of Self-compacting Concrete Incorporating Palm Kernel Shell Ash with Variations in Superplasticiser Content | Chapter 7 | Engineering Research: Perspectives on Recent Advances Vol. 11

 

The low water-to-cement ratio in Self-Compacting Concrete (SCC) aims to increase the compressive strength of concrete, but the lower amount of water results in lower workability. Thus, it is necessary to use chemical additives of superplasticiser (SP). SP improves workability while maintaining the specified water-to-cement ratio. This study aims to determine the characteristics of SCC incorporating palm kernel shell ash (PKSA) with varying SP content. The SP content in SCC was 1.5%, 2.0%, and 2.5% of the concrete total mass. The PKSA was 0% and 10% of the total binder mass, and the water to cement ratio was 0.35. The SCC was designed as a C30 class. Some tests of fresh and hardened SCC produced characteristic data that included flowability, viscosity, passing ability, density, and compressive strength. Fresh concrete tests were the slump flow, V-funnel, and L-box tests. There were six SCC mixtures, each with five hardened cylindrical samples for density and compressive strength tests. The addition of SP content increased the flow distribution diameter, decreased viscosity, and increased passing ability. PKSA, as a partial replacement for cement, reduced the density of SCC and increased the compressive strength, but not significantly. The highest compressive strength was obtained in SCC with 10% PKSA and 1.5% SP of 34.75 MPa at the age of 28 days. The use of SP by more than 1.5% increased workability but reduced the compressive strength of SCC by inhibiting the binding process.

 

 

Author(s) Details

Siti Aisyah Nurjannah
Department of Civil Engineering, Faculty of Engineering, Universitas Sriwijaya, Palembang-Prabumulih St, KM 32 Inderalaya, Ogan Ilir Regency, South Sumatra, Indonesia.

 

Sutanto Muliawan
Department of Civil Engineering, Faculty of Engineering, Universitas Sriwijaya, Palembang-Prabumulih St, KM 32 Inderalaya, Ogan Ilir Regency, South Sumatra, Indonesia.

 

Yolinda Martius
Department of Civil Engineering, Faculty of Engineering, Universitas Sriwijaya, Palembang-Prabumulih St, KM 32 Inderalaya, Ogan Ilir Regency, South Sumatra, Indonesia.

 

Please see the book here :- https://doi.org/10.9734/bpi/erpra/v11/6533