TA UTILIZATION OF SANDBLASTING WASTE AS A FINE AGGREGATE REPLACEMENT MATERIAL IN MIXED PAVING BLOCK THESIS

Abstract

The development of industrial technology in Indonesia followed by waste problem as impact. .Some industrial steel fabrication construction and sandblasting produce enormous the aims of the research is determining the characteristics of the paving block constituents and the effect of adding sandblasting waste substitutes to the compressive strength of paving blocks.

This paving block uses the ratio of cement: sand, which is 1: 5 by replacing 50% of the sand ratio with sandblasting waste and the remaining 50% is a combination of Palu sand and samboja sand and the compressive strength test is done at 28 days.

Characteristics of sandblasting waste include specific gravity (SSD) = 2.64; moisture content = 1.91%; mud content = 2.44%; Fine Modulus Grain (MHB) = 1.78. The overall results meet the standard requirements of fine aggregates, so that sandblasting waste can be used as a fine aggregate substitute for paving block mixtures. The effect of compressive strength of block paving with 50% sandblasting waste on a variation of 30% mixture of Palu sand and 20% Samboja sand in a 1: 5 mixture of paving blocks achieving B quality of 17 MPa.