Physical, mechanical and thermal properties of lightweight foamed concrete with fly ash

2nd Nommensen International Conference on Technology and Engineering

Habsya, Chundakus^1 ; Diharjo, Kuncoro^2 ; Setyono, Prabang^3 ; Satwiko, Prasasto^4

Doctor Candidate in Postgraduate Program, Sebelas Maret University, Indonesia^1

Mechanical Engineering Dept., Engineering Faculty, Sebelas Maret University, Surakarta, Indonesia^2

Environmental Science Dept., Postgraduate Program, Sebelas Maret University, Surakarta, Indonesia^3

Department of Architecture, Faculty of Engineering, Universitas Atma Jaya Yogyakarta, Indonesia^4

关键词: Air pressures;    Air voids;    Fly ash content;    Foam generators;    Foamed concrete;    Mechanical and thermal properties;    Water-cement ratio;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/420/1/012062/pdf
DOI  :  10.1088/1757-899X/420/1/012062

来源: IOP

【 摘 要 】

This study aims to investigate the effect of fly ash content on the density, thermal conductivity, compressive strength and water absorption of Lightweight Foamed Concrete (LFC). This LFC consists of cement, water, sand, fly ash (FA) and foam. The foam is needed to to create air voids in the mixture and reduce its weight. The foaming agent which was diluted in the water was given air pressure using foam generator to produce foam. The LFC are made with water-cement ratio of 1:1 and cement-agregat ratio of 1: 4. Aggregates consisted of sand and FA varied by 0%, 10%, 20% and 30% in weight. The content offoam was 30% and 40% of the mortar volume. The increasing of foam content decreases density, thermal conductivity, and compressive strength of LFC. However, that increases its water absorption. The increasing of FA contentalso decreases water absorption, but it density, thermal conductivity and compressive strength.