Kajian Kuat Lekat pada Beton Bubuk Reaktif dengan Pasir Kuarsa 30% dan Variasi Fly Ash sebagai Substitusi Parsial Semen

Torianzyah Putra Bimandiri Sugiarto; Endah Endah; Wibowo Wibowo

doi:10.47134/scbmej.v1i3.3008

Authors

Torianzyah Putra Bimandiri Sugiarto Program Studi Teknik Sipil, Fakultas Teknik, Universitas Sebelas Maret
Endah Endah Program Studi Teknik Sipil, Fakultas Teknik, Universitas Sebelas Maret
Wibowo Wibowo Program Studi Teknik Sipil, Fakultas Teknik, Universitas Sebelas Maret

DOI:

https://doi.org/10.47134/scbmej.v1i3.3008

Keywords:

Beton Bubuk Reaktif, Fly Ash, Kuat Lekat

Abstract

Infrastruktur memiliki peran penting dalam pertumbuhan ekonomi dan kemakmuran suatu negara, sehingga diperlukan konstruksi yang aman, kuat, kaku, dan stabil. Penggunaan bahan material dalam konstruksi sangat penting, terutama bahan seperti beton. Tujuan penelitian ini adalah untuk mengkaji dampak variasi kadar fly ash terhadap kekuatan lekat beton bubuk reaktif. Metode eksperimental digunakan dalam penelitian ini. Campuran beton dirancang dengan menggunakan 30% pasir kuarsa dan variasi kadar fly ash 0%, 5%, 10%, 15%, 20%, dan 25% dari berat semen. Benda uji yang digunakan adalah beton kubus dengan panjang sisi 20 cm. Kekuatan lekat beton diuji menggunakan Universal Testing Machine (UTM) dan dial gauge. Hasil penelitian menunjukkan bahwa nilai kekuatan lekat maksimum terjadi pada kadar fly ash 0%. Penambahan fly ash menyebabkan penurunan nilai kekuatan lekat. Nilai kekuatan lekat beton saat terjadi slip 0,25 mm pada kadar fly ash 0%, 5%, 10%, 15%, 20%, dan 25% berturut-turut adalah 14,35 MPa, 13,54 MPa, 12,10 MPa, 10,58 MPa, 8,60 MPa, dan 7,38 MPa. Sedangkan nilai kekuatan lekat beton pada beban maksimum pada kadar fly ash yang sama berturut-turut adalah 23,94 MPa, 23,79 MPa, 23,49 MPa, 23,31 MPa, 23,05 MPa, dan 22,92 MPa.

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