Abstract :
Abstract
The purpose of this study is to determine the effect of adding superplasticizer admixture (NN) and supercement on compressive strength with high initial strength at 3 days has reached the K-500 compressive strength.
The study will use 9 samples as specimens with 5 mixed variations, namely Normal Concrete, Normal Concrete + Supercement 2.51 kg / m3, Normal Concrete + Supercement 2.51 kg / m3 + Sikament-NN 3,5%, Normal Concrete + Supercement 2,51 kg / m3 + Sikament-NN 4%, Normal Concrete + Supercement 2,51 kg / m3 + Sikament-NN 4,5%.
The optimum compressive strength test value occurs in concrete mix with the addition of Sikament -NN 3.5% and Supercement 2.51 kg / m3, has a compressive strength value of 509.24 kg / cm2 at 3 days and 649.02 kg / cm2 at 28 days old.
Keywords: Superplasticizer (Sikament-NN) and Supercement, K-500 Concrete Mixture, Concrete Compressive Strength Analysis.