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Corresponding Author
Qomariah Qomariah

Institutions
Politeknik Negeri Malang

Abstract
Sandblasting and water jetting have been utilized to remove accumulated organic matter and other debris from substrates such as concrete, steel, and wood components. Sandblasting process produce waste sand that is harm full for heath. Sandblasting waste is easy to get for free from PT. BOMA BISMA INDRA which is located in Pasuruan East Java. The objective of experimental Laboratory for an evaluation of substitution waste of sandblasting sand in mortar and concrete mix for its strength, absorption and work ability of the mix. By using mortar cube 10 x 10 cm and concrete mould cylinder 15 x 30 cm specimen for curing time 7 and 28 days. The fraction of waste sand are 0%,10%, 20 % and 30% of natural sand. As a result of the experiment. The compressive strength of mortar is increase 5% for 10% sandblasting, 7% for 20% sandblasting, and 12% for 30% sandblasting. While concrete are increase 7% for 10% sandblasting, 12% for 20% for sandblasting, and 16% for 30% sandblasting along with increased of waste sand use. An absorption of concrete become smaller compare the normal concrete but work ability of the concrete mix increased which indicated by slump value.

Keywords
sandblasting sand, mortar,concrete, slump, compresssive strength, absorption

Topic
Civil Engineering

Link: https://ifory.id/abstract/GtTug4nPpHRV