The Influence of Glass Powder toward Initial Crack and Compressive Strength of Paving Block
Sittati Musalamah, Adhi Kresnoto, Kusno A Sambowo, Arris Maulana, Santoso S Handoyo

Niversitas Negeri Jakarta

Abstract

The main chemical compound of Scanning Electron Microscopy (SEM) test of the glass powder is silica with the percentage of 75,55%. It can be categorized as a pozzolanic material. The glass powder is potential for supplementary material to the paving blocks mixtures.
This study aims to determine the effect of the addition of glass powder from the glass bottle waste on paving blocks with variations in the percentage of 0% (as a control), 5%, 10%, 15%, and 20% of cement (by weight) at 28 days. The dimension of the specimen is 210 mm × 105 mm × 80 mm. All tests were carried out in accordance with SNI 03-0691-1996 concerning paving blocks.
The test results show that the addition of glass powder from bottle waste can improve the quality of paving blocks. This is caused by the pozzolan effect produced from glass powder. Paving blocks compressive strength values obtained with variations in the addition of glass powder 0%, 5%, 10%, 15%, and 20% are 19,63 MPa, 25,40 MPa, 22,77 MPa, 31,78 MPa, and 26,67 MPa. All paving blocks are included in a quality according to wear resistance testing. Based on the compressive strength and abrasion value, It was found that the initial quality target was not achieved and only the optimum one able to achieve B quality (as parking lot). In the case of water absorption, the quality has improved to B quality. In the sodium sulfate resistance test, it was found that only normal paving blocks and 5% addition of glass powders did not pass the test, while in the other variations all test samples passed.

Keywords: Paving Block, Glass Powder, Pozzolan, Compressive Strength, Abrasion, Water Absorption, Sodium Sulfate Resistance

Topic: Civil Engineering