The purpose of this study was to analyze the quality of concrete from various uses of portland cement brands in the building materials market in Semarang City. The cement used in the study were Portland cement type I brand A and Portland cement brand B. Portland cement brand A represented Gresik, Holcim, brand B cement represented Padang, Garuda, Grobogan. The fine aggregate used in this study was sand from Muntilan. The number of specimens for each type of cement use is 14 pieces. The test parameters for concrete are slump test, hard unit weight, water absorption, and compressive strength. Concrete compressive strength test was carried out at the age of 3 days and 28 days of concrete. The test results for the initial setting time of brand A cement was 107 minutes while brand B cement was 123 minutes. The coefficient of compressive strength of concrete aged 3 days against 28 days, using brand A cement was 0.40 and brand B cement was 0.24.

Keywords : Cement Brand, Concrete Quality, Compressive Strength.