DOI: https://doi.org/10.14710/teknik.v40i1.23390

Improvement The Compressive Strength and Flexural Strength of Concrete by Adding Variations of Pineapple Leaf Fibers

Peningkatan Kuat Tekan dan Kuat Lentur Beton Dengan Variasi Penambahan Serat Daun Nanas

*Gusneli Yanti scopus  -  Program Studi Teknik Sipil Fakultas Teknik, Universitas Lancang Kuning, Indonesia
Z. Zainuri  -  Program Studi Teknik Sipil Fakultas Teknik, Universitas Lancang Kuning, Indonesia
Shanti Wahyuni Megasari  -  Program Studi Teknik Sipil Fakultas Teknik, Universitas Lancang Kuning, Indonesia
Open Access Copyright (c) 2019 TEKNIK

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Abstract
Concrete is a building material that is widely used, because this material is strong against the press, can be easily formed to suit the needs. In the other side, has a weakness against bending and has brittle properties, so that a method is needed to correct this weakness. One effort to increase the tensile strength of concrete is done by adding fiber so that it becomes a composite material, namely concrete and fiber. This research aims to improve compressive strength and flexural concrete by adding fiber with variations of 0%, 1%, 3%, 5%, and 7% on the weight of cement on the concrete quality of K-225. The concrete design uses the Department of Environment (DOE) method, with cylinder molds with a size of 150 mm x 300 mm. The number of samples in each variation were 3 specimens and a total sample of 30 specimens. Testing results show that the highest compressive strength and flexural strength in mixed variations with an additional pineapple leaf fiber of 5% with an average compressive strength of 267.00 kg / cm2 and average flexural strength of 41.61 kg / cm2.
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Keywords: concrete; Department of Environment; flexural strength; compressive strength; pineapple leaf fibers

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