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All Journal BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan PARENTAS: Jurnal Mahasiswa Pendidikan Teknologi dan Kejuruan
Yulin Patrisia
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Education Energy Engineering Transportation Other

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Journal : BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan

 1 
INFLUENCE OF ULIN WOOD GRAIN USAGE AS FIBER MATERIAL ON CONCRETE COMPRESSIVE AND TENSILE STRENGTH Yulin Patrisia; Sri Murwantini
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 1 No. 1 (2013): Journal Balanga Edisi Januari-Juni 2013
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

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Abstract

Concrete is a building material used widely in construction because of the advantages it has. One of the very specific characteristics of concrete is that it withstands the force/compressive stress, but does not withstand the concrete tensile strength. There are various innovations have been made to improve the ability of the concrete tensile, such as reinforced concrete, prestressed concrete and fibre concrete. In this study, the fiber used as a mixture of concrete, fiber used is ironwood fiber (Eusideroxylon zwageri) which is an industrial waste from sawmills. The addition of 5%, 10%, and 15% ironwood fiber showed its influence to the concrete compressive strength and tensile. Percentage increase in optimum compressive strength and tensile strength of the concrete cylinders occurs in variation with the addition of 5% kayu ulin fiber, which is 14.2% higher when compared to concrete without fibers, with an average compressive strength of 30.76 MPa. For tensile strength of concrete, it reachs 3,545 MPa or 2.63% higher than the concrete without fibers. For the addition of ironwood fiber variation by 10% and 15% showed an increase in the tensile strength of concrete, but a decrease in the compressive strength of concrete. The experimental results also showed that the addition of fiber will reduce workability of concrete.
PLS MODEL FOR THE PRICE APPROACH OF CONCRETE SAND MATERIAL Yulin Patrisia; Revianti Coenraad
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 5 No. 1 (2017): Journal Balanga Edisi Januari-Juni 2017
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

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Abstract

This study aims to determine the factors that influence the pricing of sand concrete material in a project site and make an approach model to determine the price of relevant construction materials. The study was conducted through literature study and field survey to obtain primer data and secondary data. Approach model to fix the price of sand material by using PLS analysis. The result of research stated that there are several factors influencing the price of concrete sand material, namely economic factor, location factor, material resource factor, transportation factor, and regulation factor and government policy. The approach model to determine the price of concrete sand material shows that the transportation factor has an effect on the price of concrete sand material, while the least dominant variable is regulation factor and government policy.
INFLUENCE OF PEAT WATER ON MECHANICAL PROPERTIES OF COCONUT SHELL AND FLY ASH BASED CONCRETE Yulin Patrisia; Topan Eka Putra
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 7 No. 2 (2019): Journal Balanga Edisi Juli-Des 2019
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/balanga.v7i2.1542

Abstract

This study aimed to determine the influence of peat water on the mechanical properties of the paving block (compressive strength and water absorption) using coconut shell waste and fly ash as raw material. The background of the research were the lack utilization of fly ash, preparation for the handling and utilization of fly ash from power station at Pulang Pisau and Tumbang Kajuei (under construction), and the utilization of coconut shell to be more effective and economical. Paving block specimens were immersed in peat water to determine the effect of peat water and the rest were immersed in plain water. This experiment used fly ash as a partial replacement of cement and 2% coconut shell as a partial replacement of fine aggregate. The results of the analysis showed that: (a) Paving block using fly ash and coconut shells which were immersed in plain water experienced the increase in compressive strength and the decrease in water; (b) Paving block using fly ash and coconut shells soaked in peat water showed that by the increase of age, compressive strength was decrease and water absorption was increase; (c) The compressive strength of paving block specimens immersed in plain water and peat water showed relatively similar values at 7 and 28 days age, (d). Water absorption in paving block specimens soaked both in plain water and peat water showed relatively similar values at 7 days age, but at 28 days age the specimens immersed in peat water had greater water absorption.
Co-Authors Aspena Ester Dwi Sartika Simanjuntak Fransiskus Tandi Keny Mega Utari Noor Arif Inderawan Prengki Revianti Coenraad Sri Murwantini Topan Eka Putra