Properties of Crumb Rubber Mixed in Local Thailand Soil Cement Brick Composites

Abstract

This work presents a study on the investigation of recycled waste tyre (crumb rubber) as aggregate in the combination of local soil-cement brick. The purpose is to develop a lightweight brick with low thermal conductivity that can produce as low cost materials in local area of Thailand. The different amount of crumb rubber particles at 0, 10, 15, 20, 25, 30 and 40% were replaced to local Ratchaburi soil by weight and then mixed with a constant of Portland cement content at 10%. The mechanical properties were studied and indicated that a significant reduction in sample unit weight, there by resulting in a reduction of compressive strength and flexural strength. The results show that the presence of air voids and crumb rubber particles in the matrix can increase the water absorption but decrease the thermal conductivity. However, according to ASTM indicates that this hybrid material can be used as non-load bearing concrete masonry units (2.45 MPa) and is also suitable for construction as low cost and low energy consumption house in Thailand.

Condutividade térmica do material construtivo solo-cimento: um estudo bibliométrico

“…Esta seleção resultou em uma base de dados composta por 35 publicações [1], [9], [10], [12] a [20], [23] a [27], [29], [30], [33], [34], [36], [37], [41], [43] a [50], [51] a [54]. As publicações foram classificadas segundo as seguintes informações: região geográfica na qual o ensaio foi realizado, classificação do solo (arenoso, siltoso ou argiloso), presença ou não de cimento (caso haja, o valor da porcentagem), forma de moldagem do componente construtivo, teor de umidade durante aplicação dos ensaios, tipo de ensaio térmico efetuado e propriedades físico-químicas e térmicas disponíveis (massa específica, condutividade térmica, calor específico, difusividade térmica e efusividade térmica).…”