Pengaruh Pemakaian Jenis Agregat Halus Terhadap Kuat Tekan Bebas Material Ringan Mortar Busa Sebagai Bahan Pengganti Urugan Pilihan Pada Konstruksi Jalan

Hermanto, Hermanto (2019) Pengaruh Pemakaian Jenis Agregat Halus Terhadap Kuat Tekan Bebas Material Ringan Mortar Busa Sebagai Bahan Pengganti Urugan Pilihan Pada Konstruksi Jalan. Masters thesis, Universitas Islam Riau.

Preview

Text 173121003.pdf Download (2MB) | Preview

Abstract

The main problem that is often found in soft soil and peat is the problem of construction stability and settlement. The use of ordinary soil on soft or peat soil is always problematic due to the weight of the soil itself, where the subgrade is unable to hold it so that the deposits enter the soil and the stability of the stock is not stable. Using lightweight foam mortar materials the problem of weight loss can be overcome because foam mortar is very light compared to other fill material and the lateral force of the embankment is not present because foam mortar behaves like concrete. This study was to determine the ratio of foam mortar free compressive strength by using several types of fine aggregate types. The sand used is the river sand of Danau Bingkuang, Teratak Buluh river sand, Tembilahan river sand, Kulim Pekanbaru sand land and sea sand Tj. Balai Karimun. This study uses an experimental method with a total of 125 test pieces. The test object used is a concrete cylinder 10 cm x 20 cm. The testing followed the technical instructions issued by the Ministry of PUPERA Pusjatan. Foam mortar quality is planned for sub base fc = 800 kPa foundation. Free compressive strength test was carried out on the age of specimens 3, 7, 14, 21 and 28 days.. From the results of the study obtained the average pore number of the largest foam mortar is that using Kulim land sand 0.246 and the smallest sea sand Tj. Balai Karimun 0.113. Foam mortar compressive strength increased as the highest age increase at 28 days was using Teratak Buluh river sand 11.65 kg / cm² and the lowest Kulim land sand 3.31 kg / cm². Mortar foam using PPC cement type is higher in free compressive strength than OPC cement types in all ages between 8- 31%. Foam mortar-free compressive strength treated was higher than that not treated almost in all ages between 4-18%. The highest modulus of elasticity at 28 days of age was foam mortar using Danau Bingkuang river sand 4.365,8 kg / cm² and the lowest was Kulim land sand 1.323,6 kg / cm². Teratak river sand Reeds and river sand Danau Bingkuang can be used as a mixture of lightweight foam mortar materials, while the Tembilahan river sand, Kulim Pekanbaru sand land and sea sand Tj. Balai Karimun cannot be used because the results of the free compressive strength test do not meet the Ministry of PUPERA's specifications, which is below 800 kPa at the age of 14 days.

Actions (login required)

View Item