PEMANFAATAN ABU LIMBAH KERTAS PADA PEMBUATAN BATU BATA

Abstract

The increasing number of population each year makes the number of building needs for houses, buildings, schools, offices and other infrastructure will increase. In general, building consumption cannot be separated from the use of bricks as a form of wall construction in building construction. The size and compressive strength of bricks circulating in the market are of poor quality which comes from fabrication, local work or home industries. In the brick-making process, bricklayers only use certain types of soil to maintain the quality of brick production. As a result, the availability of soil as the main material in brick making will decrease. Another alternative to meet the shortcomings of the brick-forming material and make it stronger and more durable, can be used as a substitute for other materials such as waste paper. The use of paper waste is an effort to find new types of building materials and to reduce environmental pollution problems due to paper waste. This study aims to analyze the concentration of the addition of paper waste ash on the strength of the bricks. The benefit of this research is as an alternative study of meeting the needs of brick raw materials for environmentally friendly buildings by utilizing paper waste ash. The results showed the effect of a mixture of paper waste ash as a clay additive on the compressive strength of normal bricks (fc '2.9 MPa). The percentage value of compressive strength with a mixture of paper waste ash 3% obtained an average compressive strength of 40.10 kg / cm2, 5% mixture variation obtained an average compressive strength of 61.48 kg / cm2 and 7% mixture variation obtained an average compressive strength average 64.12 kg / cm2 against the compressive strength of normal bricks 37.28 kg / cm2. The conclusion of this research is that the variation of the mixture of paper waste ash with a variation of 7% paper waste ash mixture exceeding 60 kg / cm² (compressive strength class III) SNI 15-2094-2000a. This shows that paper waste ash can increase the compressive strength of bricks.