Pengaruh Rendaman Air Gambut Terhadap Kuat Tekan Beton Pulih Mandiri (Self Healing Concrete) Menggunakan Vege Grout

Zulyandani, Irvanandes (2022) Pengaruh Rendaman Air Gambut Terhadap Kuat Tekan Beton Pulih Mandiri (Self Healing Concrete) Menggunakan Vege Grout. Other thesis, Universitas Islam Riau.

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Abstract

Self-healing concrete or SHC is a concrete that can independently repair cracks in concrete and is expected to fill the pores in concrete with the production of CaCO3 minerals caused by the activity of microorganisms in the concrete, these microorganisms are produced from the extraction process carried out on vegetable waste grout) what if this vegetable waste extract (vege grout) is mixed with urea and CaCl to produce calcium carbonate CaCO3. There are 27 samples of concrete test objects, where the size of the concrete mold is 15cm x 15cm x 15cm totaling 3 specimens for each variation. 0% totaling 3 samples, the first stirring with variations of 3%, 5%, 7%, 9% totaling 12 samples to replace the weight of cement to be tested using a concrete compressive strength machine at 28 days of treatment. second mixing with variations of 3%, 5%, 7%, 9% totaling 12 samples replacing the weight of cement to be cracked using a hammer after 28 days of treatment, after that the cracked sample was recovered for 28 days, then the sample was tested for pressure, for immersion using peat water. The value of the compressive strength of concrete at 28 days of treatment using peat water bath and 0% variation of vege grout was 31,690 Mpa, 3% mixed variation was 42,851 Mpa, 5% mixed variation was 34.514 Mpa, 7% mixed variation was 34.261 Mpa, and mixed variation 9% is 30.819 MPa, where the mixture variation of 3% gets the highest compressive strength value. For concrete after cracking, it remains the same, where the highest number is found in concrete with a mixture variation of 3%, which is 33,227 Mpa and decreases with variations of 5%, 7%, 9% with values of 26.207 Mpa, 25,786 Mpa, and 25,280 Mpa, respectively. After visually looking at the cracks in the concrete, the changes that occur are not so significant, only calcification occurs on the surface of the concrete but the cracks in the concrete cannot recover as expected, only crack types less than 1mm can be recovered.

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