Analisis Pengaruh Penggantian Sebagian Pasir Dengan Pecahan Batu Bata Terhadap Kuat Tekan Paving Block

Abstract

Penggaron area is one of the places that produce bricks in the city of Semarang. In  producing it, then it will generate waste that is the brick itself. On the other hand the  use of paving blocks are increasing with growing age. Various innovations have  been made in making paving block one broken bricks using waste as a substitute  material fine aggregate sand. The purpose of this study is the utilization of waste  broken bricks Penggaron as a partial replacement of sand in the manufacture of  paving blocks, as well as to determine the optimal compressive strength of paving  blocks are made with a mixed composition 1 PC: 6 Ps (control group); 1pc: 5 Ps: 1
Bt; 1pc: 4 Ps: 2 Bt; 1pc: 3 Ps: 3 Bt; 1pc: 2 Ps: 4 Bt; 1pc: 1 Ps: 5 Bt. The test object  is made rectangular with a size of 21 cm x 10.5 cm x 6 cm. From the test results 28  days highest compressive strength achieved by paving block with a mixed  composition of 1: 6 in the amount of 193.44 kg / cm2. And the lowest compressive  strength achieved by the composition of the mixture of 1: 2: 4 that is equal to 102.63  kg / cm2. From the graph has been created, obtained the equation y = -13,78x +  197.12 as well as the correlation coefficient R of 0.5791. The equation shows that  the increasing mix of brick lower compressive strength and the R value implies a  comparison mix (cement: sand: bricks) have a rather low influence of compressive  strength.