Pengaruh Campuran Fly Ash dan Zat Aditif Terhadap Kuat Lentur dan Tekan Beton Mutu Fs4,5 MPA Pada Perkerasan Jalan

Thaufan, Thaufan (2020) Pengaruh Campuran Fly Ash dan Zat Aditif Terhadap Kuat Lentur dan Tekan Beton Mutu Fs4,5 MPA Pada Perkerasan Jalan. Masters thesis, Universitas Islam Riau.

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Abstract

The research aims to determine the effect of the addition of fly ash and additive NaOH on compressive strength and flexural strength of concrete beams.the fly ash that was used came from the remains of the burning of the asphalt mixing plant of the PT Riau Mas Brother. The percentage of fly ash used as a subtitute for type I portland cement is 0%, 0,5%, 2% dan 3,5%. The materials used are 2-3 broken stones, 1-2 broken stones, sand and cement. Test specimens are made in the form of a cylinder size 150mm × 300 mm for compressive strength and jn the form of beams 150 mm × 150 mm × 600 mm for flexural strength. Compressive and flexural strength tests are carried out when the specimen is 7 days, 14 days and 28 days old. The result of the research showed an increase in the compressive strength and flexural strength of Fs 45 with the addition of 3,5 % ash by 4,76 Mpa to the optimum point of 3,5 % fly ash. The compressive strength value obtained was 39,80 Mpa. In testing for flexural strength and compressive strength with use of fly ash + NaOH there is a decrease in flexural strength and compressive strength

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