Empirical Formulas For Estimation Of Some Physical Properties Of Gas Concrete Produced By Adding Aluminum Powder

Abed Al-wahab Ali, Manolia; Akram Hassan, Sawsan; Mosleh Salman, Mohammed

	Empirical Formulas For Estimation Of Some Physical Properties Of Gas Concrete Produced By Adding Aluminum Powder
Journal of Engineering and Sustainable Development
Article 1, Volume 14, Issue 4, 2010, Pages 65-78
Authors
Manolia Abed Al-wahab Ali; Sawsan Akram Hassan; Mohammed Mosleh Salman
Abstract
The aim of this study is to produce one types of lightweight concrete which is known as ( gas concrete ) , four additions of aluminum powder ( 0.1, 0.2, 0.3, 0.4) % by weight of cement were used to produce gas concrete. Two different ways for curing, air and steam curing, were carried out using (5) cm cubes specimens. The test results showed that the density and compressive strength of gas concrete decreases with the increase of percentage of aluminum powder (AL).The density of gas concrete was between (1177.1-1524.38) kg/m3and (1246.24-1593.94) kg/m3 for air and steam curing, respectively when the percentage of aluminum powder was between (0.1—0.4) % by weight of concrete. The addition of (AL) also increases the volume of gas concrete. It was between (13.3- 50.8) % and (18.7 – 61.3) % for air and steam curing respectively when (Al) was between (0.1-0.4) % The test results showed that the best percentage of (Al) was 0.2% by weight of cement which gives density (1389.98) kg/m3 and compressive strength (0.26) MPa for air curing and (1431.95) kg/m3and (0.55)MPa for steam curing. Statistical analysis is done to find mathematical relationships to predict some variables of gas concrete {density, compressive strength, the percentage of expansion and percentage of (Al)} for both air and steam curing concrete .

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