The effectiveness of stone ash and volcanic ash of mount Sinabung as a filler on the initial strength of self-compacting concrete

10th International Conference Numerical Analysis in Engineering

数学;工业技术

Karolina, R.^1 ; Muhammad, W.^1 ; Saragih, M.D.S.M.^1 ; Mustaqa, T.^1

Civil Engineering Department, Universitas Sumatera Utara (USU), Kampus USU, Jl. Perpustakaan, Medan

20155, Indonesia^1

关键词: Aerated concrete;    Aggregate size;    Aluminum paste;    Concrete bricks;    Lightweight brick;    Low water;    Superplasticizers;    Volcanic ash;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/308/1/012045/pdf
DOI  :  10.1088/1757-899X/308/1/012045

学科分类：工业工程学

来源: IOP

【 摘 要 】

Self Compacting Concrete is a concrete variant that has a high degree of workability and also has great initial strength, but low water cement factor. It is also self-flowable that can be molded on formwork with a very little or no compacted use of compactors. This concrete, using a variety of aggregate sizes, aggregate portions and superplasticizer admixture to achieve a special viscosity that allows it to flow on its own without the aid of a compactor. Lightweight concrete brick is a type of brick made from cement, sand, water, and developers. Lightweight concrete bricks are divided into 2 based on the developed materials used are AAC (Autoclave Aerated Concrete) using aluminum paste and CLC (Cellular Lightweight Concrete) that use Foaming Agent from BASF as a developer material. In this experiment, the lightweight bricks that will be made are CLC type which uses Foaming Agent as the developer material by mixing the Ash Stone produced by Stone Crusher machine which has the density of 2666 kg / m3as Partial Pair Substitution. In this study the variation of Ash Stone used is 10%, 15%, and 20% of the planned amount of sand. After doing the tasting the result is obtained for 10% variation. Compressive Strength and Absorption Increase will decrease by 25.07% and 39.005% and Variation of 15% compressive strength will decrease by 65,8% and decrease of absorbtion equal to 17,441% and variation of 20% compressive strength will decreased by 67,4 and absorption increase equal to 17,956%.