Abstract:
The purpose of this study was to develop the surface of Laterite bricks for increase value of product by using the fragment of broken glass in the mixtures instead of sand, the broken glasses shall create the pattern and glitter on the brick surface, the appropriate mixtures shall comply to Thai Community Product Standard 602/2547, which shallhave the compressive strength at least 70 ksc. The samples were molded to dimension 5x5x5 cm in 3 groups of mixtures, the mixtures percent by weight ofbroken glasses: laterite soil: cement are 45:45:10, 55:35:10 and 65:25:10. Each group of mixtures consisted of 12 samples from 4 different sizes of broken glasses sifted through the sieve no.4, 8, 10 and 16 and from 3 different curing times 7, 14 and 28 days. The controlled samples (without broken glasses mixture) ware in 3 groups of mixtures also, the percent by weight of sand: laterite soil: cement are 45:45:10, 55:35:10 and 65:25:10, each group of mixtures consisted of 3 samples from 3 different curing times 7, 14 and 28 days. The results indicated that the strength of samples decrease when apply the broken glasses in the mixtures, the more quantity of broken glasses in the mixture the less strength and also the larger size of broken glasses in the mixture the less strength in the bricks. The surface of glasses smooth and slippery which affect to have less bonding in the sample. In this study, the appropriate percent by weight for mixture of broken glasses: laterite soil: cement was 55:35:10 with broken glasses shifted through the sieve no. 8, this mixture created the most beautiful surface and strength meet the requirement.