STUDI PERBANDINGAN BESARAN MEKANIK BRTON MENGGUNAKAN PASIR CEPU DENGAN PASIR MUNTILAN

Abstract

Concrete is kind of material which have effectiveness to do something, used simple building construction or complex building construction. Concrete material is consist of consist of cement as a glue, agregat of soft sand, rought sand (gravel) and water. Agregat takes 70-75 % of concrete volume total. So the quality of agregat will strong influence to concrete quality. By a good agregat, concrete can be easy done ( workable ), strong, durable and economical. Soft agregat ( sond ) generall 25-65% agregat total volume. We must be coreful to choose sand prosentage to agregat total. Too small sand can produce  segrega tie concrete, because of more rough agregat. Too much sand which is used can produce low solid. Commonly the sand  which is used for mixed for concrete is Muntilan sand, but tere is some one who use Cepu sand. From the both of the sand after had been tasted product date of volume mechanic difference ( strong pressure,strong pulling, strong curve) conrete which is used Muntilan sand is higher quality than Cepu sand, but mud prosentage Muntilan sand is higher than mud Cepu sand. It is possibility Muntilan sand rougher than Cepu sand or surface of Cepu sand is less sharp. So must do experiment at next time.