Pengaruh Penambahan Ekstrak Limbah Sayuran Terhadap Nilai Slump 10-30 Dalam Proses Self Healing Concrete

Nanda, Yovie Aprida (2022) Pengaruh Penambahan Ekstrak Limbah Sayuran Terhadap Nilai Slump 10-30 Dalam Proses Self Healing Concrete. Other thesis, Universitas Islam Riau.

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Abstract

Concrete is a construction material consisting of a mixture of materials such as cement, aggregate and water as well as other additives. Currently the use of concrete is increasing because concrete is a construction material that has several advantages, such as being easy to process and the price of the material being made is relatively cheap and easy to obtain. The purpose of this study is to determine changes in the physical concrete and analyze the effect of the slump value of 10-30 on the value of the compressive strength of concrete on the quality of self-healing concrete with the method used to calculate the concrete mix (Mix Design) based on SNI 03-2834- 2000. Methods this research the method of self-healing concrete or self-healing concrete. This study used a cube sample of 27 samples. This method is done by adding from the extract of fermented vegetable waste. The percentages ofvariation used are 0%, 3%, 5%, 7% and 9% with a planned concrete quality of k-225 equivalent fc’19 mpa. The results are made in the form of compressive strength values for each variation and attach documentation of crack observations. The results of the slump value in the self-healing concrete study with a slump value of 10-30 mm on the 0% and 3% vegetable waste extract variant concrete met the standards, namely 20mm and 30mm. While the 5%, 7% and 9% variants do not meet the standards, namely 140mm, 220mm and 200mm. The results of the compressive strength of concrete at 28 days of immersion in the first mixing with variants of 0%, 3%, 5%, 7% and 9% decreased from 37,40 Mpa, 28,76 Mpa, 25,01 Mpa, 20,30 Mpa and 20,14 Mpa. For the second mixing the 0%, 3% and 5% variants experienced a decrease from the 0% variant, namely 37,40 Mpa, 29,15 Mpa and 22,15 Mpa, while the 7% variant experienced an increase of 23,26 Mpa and variant 9% experienced a decrease of 18,79 Mpa. Visually the cracked concrete in the 3% and 5% variants recoveredon day 14 and day 21, but could not fully restore the cracks in the concrete. Whilethe 7% and 9% variants can recover on day 14 and day 10 almost fully recovered.

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