Quality control of lightweight aggregate concrete based on initial and final water absorption tests

International Technical Postgraduate Conference

Maghfouri, M.^1 ; Shafigh, P.^2,3 ; Binti Ibrahim, Z.^1 ; Alimohammadi, V.^4

Department of Civil Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur

50603, Malaysia^1

Department of Building Surveying, Faculty of Built Environment, University of Malaya, Kuala Lumpur

50603, Malaysia^2

Center for Building, Construction and Tropical Architecture (BuCTA), Faculty of Built Environment, University of Malaya, Kuala Lumpur

50603, Malaysia^3

Department of Civil Engineering, Faculty of Engineering, University of Qom, Qom, Iran^4

关键词: Conventional concrete;    Durability performance;    High strength concretes;    Light weight aggregate;    Light-weight aggregate concrete;    Quality of concrete;    Structural concretes;    Water absorption rates;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/210/1/012022/pdf
DOI  :  10.1088/1757-899X/210/1/012022

来源: IOP

【 摘 要 】

Water absorption test is used to evaluate overall performance of concrete in terms of durability. The water absorption of lightweight concrete might be considerably higher than the conventional concrete due to higher rate of pores in concrete and lightweight aggregate. Oil palm shell is a bio-solid waste in palm oil industry, which could be used as lightweight aggregate in the concrete mixture. The present study aims to measure the initial and final water absorption and compressive strength of oil palm shell lightweight concrete in order to evaluation of quality control and durability performance. Total normal coarse aggregates were substituted with coarse oil palm shell in a high strength concrete mixture. The quality of concrete was then evaluated based on the compressive strength and water absorption rates. The results showed that fully substitution of normal coarse aggregates with oil palm shell significantly reduced the compressive strength. However, this concrete with the 28-day compressive strength of 40 MPa still can be used as structural concrete. The initial and final water absorption test results also showed that this concrete is not considered as a good concrete in terms of durability. Therefore, it is recommended that both compressive strength and waster absorption tests must be performed for quality control of oil palm shell concretes.