Soil improvement analysis for strengthening carbonate rock’s foundation at Playen-Gunungkidul Regency, special region of Yogyakarta, Indonesia

Indahsari, Lilis and Mulyaningsih, Sri and Heriyadi, Nur W. A. A.T. (2021) Soil improvement analysis for strengthening carbonate rock’s foundation at Playen-Gunungkidul Regency, special region of Yogyakarta, Indonesia. AIP Conference Proceedings 2441, 030010 (2021), 030010 (1). 030010-1. ISSN 978-0-7354-4163-7

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Abstract

The study area is part of Gunungsewu Unesco Global Geopark. It is located at Playen District Gunungkidul Regency. Its lithology consists of the intersection of fine-grain carbonate rocks and the marl of the Kepek Formation. Disturbed soils and karst in unique geological conditions control the most building foundations, so those soil improvements to increase the strength of building materials are needed. The method of study was surface geological mapping and collect soil samples. Field mapping recorded 3 types of soils; sandy soils, marly soils, and clayey soils. The soil samples were mixed with 0%, 10%, 15%, 20%, and 25% amounts of calcarenite, calcilutite, and marl to a shape of a beam (for each type of sample soil), then ripened for 0 days, 14 days, 28 days, and 56 days. All beams were tested for liquid limit, plastic limit, specific gravity, bulk density, moisture content, and compressive strength according to laboratory standard operating procedures. Thermal buckling behavior of the composite beam reinforced with the Shape Memory Alloy (SMA) under a non-uniform temperature distribution. The influence of positioning SMA reinforced lamina across the thickness and such parameters as the distribution of temperature, lamination schemes, SMA pre-strains level, and SMA volume fractions on the thermal buckling of laminated beams. The results are the marly soil is the worst soil in quality (highest moisture contents and lowest adhesion). The additions of lime powder (calcarenite and calcilutite) of 25% or 40% into marly soils have reduced the moisture contents and densities of the sample beams, as well as increased adhesion and compressive strength. Those were decreased the specific gravity until ~1.76gr/cm3 , the water content until ~4.42%, and increased the strength until ~0.25%.

Item Type:	Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Fakultas Teknologi Mineral > Teknik Geologi (S1)
Depositing User:	sri mulyaningsih
Date Deposited:	05 Jul 2022 02:58
Last Modified:	05 Jul 2022 02:58
URI:	http://eprints.akprind.ac.id/id/eprint/1061

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