Analisa Pemanfaatan Limbah Kulit Kerang sebagai Bahan Campuran pada Pembuatan Paving Block Ditinjau dari Nilai Kuat Tekan dan Serapan Air

Abstract

Indonesia has vast water and a considerable amount of potential shellfish so the production value tends to increase year by year but currently, the will to increase the economic value still not much done. The business of developing a clams industry to support increased production is still very difficult to realize because of the not fully guaranteed procurement of high-quality raw materials. Based on the problems exist, it is needed to develop more in utilizing the widely available clams’ shells in the waters of Indonesia. The aim of the study was to analyze the clams’ shells waste utilizing as the mixture material on paving block production, where the clams’ shells utilized as the main material to find out how high the compressive strength value and the water absorption on the paving block. The method used was the quantitative research method through testing and measuring the types of clams’ shells mixture variations of 0%, 10%, 20%, and 30% conducted within time periods of ore then less 4 (four) months. After that, the concrete tested using the Compression Test Machine (CTM) tool, then continued to the qualitative analysis as the reference to conclude a specific characteristic so found the utilizing opportunity as the base material construction than the other materials. The result revealed that the best one was on the variation of 10% clams’ shells mixture by the compressive strength value of 12.34 Mpa and 28 days aged have met the standard from SNI 03-0691-1996. Whereas, the best water absorption obtained on the variation of 30% clams’ shells mixture showed a 10% value has met the standard from SNI 03-0691-1996 with 28 days aged paving blocks. Thus, it showed the influence of the clams’ shell waste mixing towards the paving blocks production has the values of the variation because of the factors when concerning manually conducted.