Pengaruh Perawatan Beton Dengan Air Laut Dan Air Tawar Terhadap Kuat Tekan Beton

Abstract

Concrete is widely used as a building material. Concrete is chosen because of the many advantages of it when compared with other construction materials. In the manufacture of concrete, good treatment greatly affect the strength (durability) of concrete. Treatment of concrete not only to obtain high compressive strength of concrete but also to improve the quality of concrete durability, water-tightness against water, resistance to wear, as well as dimensional stability of the structure. In making buildings use concrete in coastal areas, in contact with sea water sometimes can’t be avoided, where sea water contains compounds which will reduce the durability of concrete. Contact with sea water is dangerous because when it is being treated, the concrete will always interact with sea water. These chemical compounds would undermine the concrete until the concrete fragile and broken. This will cause the durability obtained will not correspond to the originally predicted. This study aims to determine the quality of concrete plans will affect the treatment of concrete made with fresh water and concrete made with sea water curing. Thus, in applications in the field of water right note and give the maximum compressive strength of the concrete. Planned concrete quality is K250 to the age of the specimen 28 days, with the number of each of the 20 samples. Analysis of the data by using the provisions of SNI 03-1974-1990. The results showed that the use of brine of ± 3% for the treatment of concrete cube test specimen, obtained by the concrete compressive strength normal average is 260 kg / cm2. As for the concrete made with saltwater treatment is 221.42 kg / cm2. The results showed that the use of sea water for curing of concrete testing in reduced compressive strength of concrete.