Mechanical and Durability Properties of Aerated Concrete Incorporating Rice Husk Ash (RHA) as Partial Replacement of Cement

Crystals

Zaheer Ahmed¹  Abdul Salam Buller²  Abdullah Saand³  Tariq Ali³  Daddan Khan Bangwar³ 

[1] Civil Engineering Department, College of Engineering & Technology, University of Sargodha, Sargodha 40100, Pakistan;Civil Engineering Department, Larkana Campus, Quaid-e-Awam University of Engineering, Science & Technology, Larkana 77150, Pakistan;Civil Engineering Department, Quaid-e-Awam University of Engineering, Science & Technology, Nawabshah 67450, Pakistan;

关键词: rice husk ash (RHA);    aluminum powder;    aerated concrete;    mechanical properties;    durability properties;   

DOI  :  10.3390/cryst11060604

来源: DOAJ

【 摘 要 】

In today’s world, the implementation of industrial ecology for sustainable industrial development is a common practice in the field of engineering. This practice promotes the recycling of by-product wastes. One of those by-product wastes is rice husk ash. This paper describes an investigation into the effect of rice husk ash (RHA) as a partial replacement for cement, to produce lightweight, aerated concrete. Type I Portland cement, fine aggregate, and aluminum powder as an aerating agent were used in this study. The RHA was used in different replacement levels, i.e., RHA was used to replace cement at 0%, 2.5%, 5%, 7.5%, 10%, 12.5% and 15% by weight. Aluminum powder was added during mixing at 0.5% by weight of binder to obtain lightweight, aerated concrete. Test results are presented in terms of physical, mechanical, and durability aspects that include density, compressive strength, split tensile strength, and flexural strength of concrete cured at different curing regimes, i.e., 3, 7, 28, and 90 days along with corrosion analysis, and sulphate attack at 28 days of curing. The test results show that using 10% RHA as a partial replacement of cement in aerated concrete is beneficial in triggering the strength and durability properties of concrete.

【 授权许可】

Unknown