The Effects of Foam Beads and Kaolin on Physical and Thermal Properties of Concrete Blocks

International Journal of Technology

卷:7

PatipatTunming¹  Korb Srinavin¹ 

[1] Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand;

关键词: Concrete blocks;    Foam beads;    Kaolin;    Physical properties;    Thermal properties;   

DOI  :  10.14716/ijtech.v7i7.307

来源: DOAJ

【 摘 要 】

It is widely use of air-conditioningsystems in Thailand due to its location. It is located in a tropical zone withrelatively high temperatures all year round, with high humidity and highintensity of sunlight. In order to save electrical energy for air-conditioningsystems, preventing heat transfer into the building is required. The objectiveof this study is to investigate the physical and thermal properties of concreteblocks. An attempt is made to increase heat resistance of concrete blocks. Foambeads (0-0.30% by weight) and kaolin (0-70% by weight) were added in concrete blockmixture to increase discontinuous voids in concrete. Compressive strength andwater absorption of concrete blocks were tested. The testing results indicatedthat compressive strength decreased when foam beads and kaolin were added.Water absorption increased when foam beads were added. In contrast, the morekaolin added the less water absorption. The thermal conductivity coefficient ofconcrete blocks was also investigated. The results confirmed that the higherthe amount of foam beads or kaolin added, the higher the thermal resistance ofconcrete blocks. Thermal time-lag behavior was also investigated. The resultsindicated that concrete block with kaolin took the longest time in heating andtook the shortest time in cooling. These properties are good for heatprevention in hot climate regions. These concrete blocks which were developedand tested in this research conform to the Thai Industrial Standard. Finally,it can be concluded that because of its thermal behavior, concrete block withkaolin is a suitable energy-saving concrete block for hot and humid climates.

【 授权许可】

Unknown