Abstract
In construction field, the use of high performance concrete is essential for pre-cast and pre-stress concrete production where the addition of chemical admixture was found effectively contributes in strength. This research presents the results of using Superplasticizer polymer type Ligno C-165 in making high strength concrete. The percentage use of this material is 0.25%, 0.5%, 0.75%, 1%, 1.25% and 1.5% by weight of cement. The concrete samples were tested at the age of 3, 7, 14, 21 and 28 days after water curing. The results show that the addition of 1.5% SP increased the strength of concrete at 28 days with strength value of 64.97 MPa or 166.08% stronger than the target strength of f’c=40 MPa. This is an indication that the increase of Superplasticizer polymer type Ligno C-165 dosage in concrete will also increases the strength that can be due to the effect of SP in reducing the water content that may produces denser matrix concrete with less volume of voids resulted in improving the properties of high strength concrete. From the results, the application of this mixture proportions could be used for producing building construction elements in the field of civil engineering.
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