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Riza Susanti
Departemen Sipil dan Perencanaan, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275
Civil Engineering, Building, Construction & Architecture Engineering

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Pemanfaatan Limbah Serbuk Kayu dan Fly-Ash Sebagai Bahan Tambah Pembuatan Genteng Beton Eco-Friendly Ahcmad Faruk Faqrudin; Syaiful Kharis Setiawan; Riza Susanti; Puji Widodo
Jurnal Sipil dan Arsitektur Vol 1, No 1 (2023): Juni
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/pilars.1.1.2023.33-42

Abstract

Some roofs in Indonesia still use concrete tiles because they are expensive and heavy. Indonesia is also the country that produces the most wood and coal in the world, this will cause sawdust and fly ash waste. Therefore, research was carried out aimed at using sawdust and fly-ash waste as mixed materials and trying to make lighter concrete roof tiles. So that in its use it can lighten roof construction and also utilize waste so that concrete roof tiles become more economical but have quality that meets SNI. The method used is an experimental method, with a cement and sand mixture composition of 1: 3 and using 4 variations of test objects, namely for sawdust variation A, 0%; B, 25%; C, 0%; D, 25% of the sand weight while for fly ash variation A, 0%; B, 0%; C, 25%; D, 25% of cement weight. This test includes appearance properties, size, flatness, bending load, water absorption and seepage. The average bending load results in variations A = 170,632 kg, B = 168,933 kg, C = 195,446 kg, D = 179,812 kg. For the average water absorption test results for variations A = 9.44%, B = 10.07%, C = 6.12%, D = 8.13%. The use of sawdust can reduce flexural strength and increase water absorption and the addition of fly ash will increase flexural strength and reduce water absorption compared to normal concrete roof tiles. Therefore, it can be concluded that concrete roof tiles with the addition of sawdust and fly ash are better, economical and lighter than concrete roof tiles without added materials and still meet SNI.
Inovasi Paving Block Bentuk Ikan Pari Muhammad Rheza Fakhri Syakir; Raihan Dany Anantyo; Shifa Fauziyah; Riza Susanti
Jurnal Sipil dan Arsitektur Vol 2, No 3 (2024): September
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/pilars.2.3.2024.41-47

Abstract

The weak interlock system in paving blocks can cause discomfort for drivers when passing over them. The more frequently traversed by vehicles, paving blocks with poor interlock systems will experience displacement. The compressive strength of paving blocks also affects their quality, thus supporting the performance of the paving block interlock system. This research aims to produce paving block products with a better interlocking system. The method used in this research is experimental and conducted in a laboratory setting. The results of the compressive strength test on stingray-shaped paving blocks, conducted at 14 days and converted to 28 days, showed superior compressive strength with an average of 24.04 MPa compared to conventional square and hexagonal paving blocks tested at 28 days, each with an average compressive strength of 20.07 MPa and 22.25 MPa, respectively. The water absorption test of the stingray-shaped paving blocks conducted at 7 and 14 days showed average water absorption rates of 5.67% and 4.31%, respectively, meeting the quality requirements of Grade B according to SNI -03-0691-1996, which requires less than 6%. Interlock system testing of the stingray-shaped paving blocks indicated superiority with an average displacement of 5.514 mm compared to conventional square and hexagonal paving blocks, each with an average displacement of 11.802 mm and 9.744 mm, respectively. The cost calculation for stingray-shaped paving blocks amounted to Rp. 2263.22 per paving block, 24,559% more economical than the total cost for conventional hexagonal paving blocks, which amounted to Rp. 3000.00.
Co-Authors Ahcmad Faruk Faqrudin Muhammad Rheza Fakhri Syakir Puji Widodo Raihan Dany Anantyo Shifa Fauziyah Syaiful Kharis Setiawan