Performance of Lightweight Foamed Concrete with Waste Clay Brick as Coarse Aggregate

Performances of lightweight foamed concretes that are made from partial substitution of waste clay brick as coarse aggregate has been investigated in this study. The research aims were to identify the properties and characteristic of lightweight foamed concrete using waste clay brick as alternative materials to reduce the depletion of normal coarse aggregate from granite. Four different percentages of concrete mixtures using new coarse aggregate have been prepared that consist of 25%, 50%, 75%, and 100% waste clay brick. Foamed were injected into concrete mixture to produce lightweight concrete with appropriate proportions. The samples have undergone several testing including compression test, water absorption test, workability test and density test. From the results obtained, lightweight concrete that were produced with 25% substitution of waste clay brick showed the highest compressive strength of 25 MPa with density of 1647 kg/m(3). (C) 2013 The Authors. Published by Elsevier B.V. Open access under CC BY-NC-ND license. Selection and peer review under responsibility of Asia-Pacific Chemical, Biological & Environmental Engineering Society