Abstract
Foam glass granule (FGG) is commonly used as an aggregate for light weight aggregate concrete (LWAC). Because bulk gravity of FGG is much less than that of mortar matrix, segregation is tended to occur in LWAC mixtures. Mortar plays an important role in properties of LWAC with FGG. Therefore, this paper presents research results of influence of mortar matrix to properties of this type of concrete. In the study, the raw materials were FGG, But Son PC40 cement, Pha Lai fly ash and Sikament plasticizer named R4. The experimental results showed that with FGG content of 40% by volume and flow of mortar at 21- 22 cm, the LWC mixture was homogeneous and its slump was at 3.5- 5.5 cm. Simultaneously, the LWAC’s density was 1400-1500 kg/m3 and its compressive strength at 28 days was over 11 MPa.
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