PEMANFAATAN LIMBAH KULIT KERANG PADA SISTEM PEMBUATAN BATU HIAS BANGU

Scallop shell waste with kind of shell liner (anadara granosa) could be make some evoke environment problem. Basic comodity as raw materials from scallop shell that crush can be maked use to be alternative building material. On other side residu from scallop shell powder can be maked use as livestock woof butrient. This research objective is to get detailer unsure chemistry compound that composed scallop shell, get containt of raw material such gradation and density until get artificial building stone characterize such : density, porosity and bent strength. Research method that should separate scallop shell with dirt soak white wash use water lime, dryed then crush with size maximal 5 mm. This soft agregate mixed with stone ash and cement portland with 4 variaty composition kinds, that is A = 1 cement: 3 stone ashes: 0 scallop-shel