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All Journal Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil BANGUN REKAPRIMA
Vemi Widoanindyawati
Politeknik Negeri Semarang
Humanities Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Engineering Transportation Other

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PENGARUH LUMPUR TERHADAP KEPADATAN DAN PERMEABILITAS PASIR MUNTILAN Bambang Widodo; Vemi Widoanindyawati
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol. 31 No. 1 (2026): Wahana Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v31i1.7656

Abstract

Soil permeability controls the ability of water to pass through voids in soil. Muntilan sand is widely used as a construction material, yet its relatively open gradation may produce high seepage when applied as fill or drainage-related material. This paper evaluates the effect of mud content on the compaction characteristics and permeability of Muntilan sand using laboratory testing. The study used sand from Kecamatan Dukun, Kabupaten Magelang, and mixed it with mud at 0%, 5%, 10%, 20%, and 40% by weight. Physical testing consisted of water content, specific gravity, grain-size distribution, and unit weight. Mechanical testing used the Standard Proctor method, while hydraulic testing used the constant-head permeability method for granular soil. The test results indicate that increasing mud content raised the maximum dry density from 1.903 g/cm³ in original sand to 2.180 g/cm³ at 40% mud. Conversely, the coefficient of permeability decreased from 6.5862 x 10⁻ ³ cm/s in original sand to 7.6982 x 10⁻4 cm/s at 40% mud. The decrease is attributed to fine particles filling the pore space of the sand skeleton. These results show that mud addition can reduce seepage potential but must be controlled to avoid drainage and surface ponding problems.
PENGARUH PENAMBAHAN LIMBAH KAYU TERHADAP KARAKTERISTIK FISIK DAN MEKANIK MORTAR SEBAGAI MATERIAL KONSTRUKSI BERKELANJUTAN: PENGARUH PENAMBAHAN LIMBAH KAYU TERHADAP KARAKTERISTIK FISIK DAN MEKANIK MORTAR SEBAGAI MATERIAL KONSTRUKSI BERKELANJUTAN Nor Puji Lestari; Vemi Widoanindyawati; Dianita Ratna Kusumastuti; Triwardaya; Marsudi
Bangun Rekaprima Vol. 12 No. 1 (2026): April 2026
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v12i1.7947

Abstract

The utilization of wood waste as an additive in mortar has attracted increasing attention as an environmentally friendly approach to reducing industrial waste while promoting sustainable construction materials. This study aimed to evaluate the effect of wood waste addition on the physical and mechanical properties of mortar, particularly its early-age compressive strength. Wood waste was incorporated into the mortar mixture at proportions of 0% (control), 10%, and 15% by weight of fine aggregate. The tests included measurements of mass, density, and compressive strength of cube mortar specimens at the age of 3 days. The 3-day testing period was selected to evaluate the early-age characteristics of the mortar as an indicator of its initial physical and mechanical performance. The results revealed that increasing the wood waste content reduced the mass, density, and compressive strength of the mortar. The control mortar achieved an average compressive strength of 1.07 N/mm², whereas the incorporation of 10% and 15% wood waste resulted in strength reductions of approximately 31% and 66%, respectively. This reduction was mainly attributed to the low density, porous structure, and hygroscopic nature of wood waste, which increased mortar porosity, reduced the effective water available for cement hydration, and weakened the interfacial transition zone between the cement paste and wood particles. At higher wood waste contents, several specimens experienced premature failure during the compression test, indicating reduced structural integrity. Despite the reduction in compressive strength, the incorporation of wood waste decreased the density of the mortar, indicating its potential for producing lightweight mortar. Therefore, wood-waste mortar is more suitable for non-structural applications, such as masonry and plastering, while simultaneously supporting sustainable construction through the beneficial utilization of industrial wood waste
Co-Authors Bambang Widodo Dianita Ratna Kusumastuti Marsudi Nor Puji Lestari Triwardaya