Analisa Penggunaan Pasir Pantai sebagai Pengganti Agregat Halus Terhadap Kuat Tekan Mortar (Penelitian)

Abstract

Sand is one of the building materials needed by the community. Demand people to have a place to stay quite high, in line population growth. Mining activities carried out detrimental impact. Losses can result in direct or in the future. As the balance of nature and landslides. One alternative to reduce these losses is find new materials that function similarly to sand or finding land for new sand for example coastal areas or the beach. In this study used sand beaches in the north Sumatera coast field mirror. The addition of sand made to meet public demand especially the coastal area. Field observations have shown that coastal communities have used the sand in the mortar to build houses or building. Compressive strength of average mortar with the use of sand for building materials such as mortar to do with composition : a PC that is composed of cement 1:4 sand beaches, compressive strength average of the mortar the age of 14 days and 28 days respectively 10 peaches objects test cube with a size of 15 x15 x15 cm in the tasting of compressive strength and density mortar. The results showed that the use of sand us an alternative filler mortar in the test results of the cube shows the compressive strength of the average mortar within 14 days amounted to 60,6 kg/cm2 in the use of beach sand pure (not washed) and 182,22 kg/cm2 for the compressive srenght within 28 days. Ten to teh results of the compressive strength average use beach sand is not pure (washed) worth 251,51 kg/cm2 in 14 days and 336,44 kg/cm2 for compressive strength value of the average mortar within 28 days.