Perbandingan Penggunaan Berbagai Merek Semen Terhadap Kuat Tekan Bebas (UCS) Material Ringan Mortar Busa Pada Lapis Pondasi Bawah Perkerasan Jalan

Syarkawi, Syarkawi (2019) Perbandingan Penggunaan Berbagai Merek Semen Terhadap Kuat Tekan Bebas (UCS) Material Ringan Mortar Busa Pada Lapis Pondasi Bawah Perkerasan Jalan. Other thesis, Universitas Islam Riau.

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Abstract

Soft soil and peat problems on the stability of road foundation have an effect on inhibiting the accessibility function of the road because it has decreased in a relatively long time, to achieve a level of stability of decline and collapse in the heap can take years and if the heap exceeds the critical height / collapse. Lightweight foam mortar material (mixture of sand, foaming agent, cement and water) is one of the selected alternatives with a light weight content of 0.6 - 0.8 t / m3 will reduce soft subgrade stress, reduce the amount of decrease and because it is rigid like concrete. The sand used as a mixture for lightweight foam mortar materials is sand from Danau Bingkuang, Kampar Regency, which has a specific gravity of 2.58 SSD specific gravity of 2.60 pseudo-species 2.64 and water absorption rate of 1.49%. And the cement used is sourced from several freely circulating cement brands in Riau Province. In the laboratory implementation, the design criteria are subbase with a planned compressive strength of 800 kPa or 8 kg/cm2. From the test results data obtained the average UCS value for each cement brand at the age of 28 days is Bosowa cement of 9.33 kg/cm2, Conch cement of 12.32 kg/cm2, Garuda cement of 7.51 kg/cm2, cement Padang is 10.91 kg/cm2 and cement Tiga Roda is 14.41 kg/cm2.

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