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Ika Puji Hastuty, Ika Puji
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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PEMANFAATAN SERBUK KACA SEBAGAI BAHAN TAMBAH DALAM PEMBUATAN BATAKO Nursyamsi, Nursyamsi; Indrawan, Ivan; Hastuty, Ika Puji
Media Teknik Sipil Vol 14, No 1 (2016): Februari
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (551.268 KB) | DOI: 10.22219/jmts.v14i1.3292

Abstract

The growing need for adobe bricks as a substitute for lead to an increase in demand for cement as brick-forming material that needs to be done to reduce their use of innovation, one using glass powder. The initial idea of thinking that the chemical elements that exist on the glass some of which are the same as in the cement, the silica (SiO2). This study uses a glass powder as a substitute against the weight of cement. Glass powder used consisted of two types of glass powder passes sieve No. 100 retained on the 200 mesh (BSKø100-ø200) and glass powder escaped sieve No. 200 (BSK <ø200) with six kinds of mixed composition of 0%, 10%, 15%, 20%, 25% and 30%. Analysis of the data by using the provisions of SNI 03-0349-1989. The results showed the entire BSK qualify for the water absorption of solid concrete brick quality I by SNI 03-0349-1989. Visual examination showed BSK surfaces have angled, flat, and free from cracks. BSK0% compressive strength of 95,289kg / cm2 and the compressive strength is highest in BSK <ø200_20% of 91,422kg / cm2 and the quality I belong to the SNI 03-0349-1989. Tensile strength BSK0% of 16,268kg / cm2 and the tensile strength is highest on-ø200 BSKø100 percentage of 15% of 19,464kg / cm2. Overall it is known that BSK <ø200 persentse 20% is the percentage of the nicest to be applied next.
Stabilisasi Tanah Lempung Menggunakan Palm Oil Fuel Ash (POFA) dan 20% Kapur Dolomit (CaMg(CO3)2) Ditinjau dari CBR dan Kuat Tekan Bebas Nasution, Derry Wiliyanda; Hastuty, Ika Puji; Roesyanto, Roesyanto; Anisa, Selfi
Blend Sains Jurnal Teknik Vol. 2 No. 3 (2024): Edisi Januari
Publisher : Ilmu Bersama Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56211/blendsains.v2i3.397

Abstract

Tanah lempung merupakan salah satu jenis tanah yang kurang baik bila dijadikan tanah dasar karena memiliki daya dukung dan kuat geser yang rendah, namun memiliki tingkat kompresibilitas yang tinggi. Usaha untuk memperbaiki kondisi tanah tersebut dengan stabilisasi. Pada penelitian ini dilakukan stabilisasi tanah secara kimiawi dengan mencampurkan bahan tambahan POFA (Palm Oil Fuel Ash) dan Kapur Dolomit (KD). Penelitian ini dilakukan untuk mengetahui nilai index properties, nilai CBR Laboratorium, dan nilai kuat tekan bebas (UCT) dari tanah asli setelah penambahan bahan stabilisasi. Persentase bahan stabilisasi yang digunakan adalah POFA sebanyak 2%, 4%, 6%, 8%, 10%, 12%, 14%, 16%, 18%, 20% dan KD sebanyak 20% di setiap variasinya. Berdasarkan hasil penelitian, nilai CBR paling tinggi terjadi pada variasi campuran 12% POFA + 20% KD yaitu sebesar 8,26%. Berdasarkan pengujian Kuat Tekan Bebas, diperoleh nilai kuat tekan tanah (qu) maksimum dari semua variasi campuran terdapat pada campuran 12% POFA + 20% KD yaitu sebesar 2,945 kg/cm2. Oleh karena itu, penggunaan POFA dan KD dinilai mampu meningkatkan stabilisasi tanah lempung.
Co-Authors Anisa, Selfi Derry Wiliyanda Nasution Ivan Indrawan, Ivan Nursyamsi Nursyamsi Roesyanto