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All Journal Jurnal Talenta Sipil
Hariyadi Haryadi
Universitas Mataram
Civil Engineering, Building, Construction & Architecture Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Sifat Mekanik Beton dengan Substitusi Limbah Kaca dan Penambahan SikaCim Concrete Additive Restu Anggara; Hariyadi Haryadi; Adryan Fitrayudha
Jurnal Talenta Sipil Vol 9, No 2 (2026): Agustus
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v9i2.1496

Abstract

The demand for high-strength concrete in Indonesia continues to grow, yet the exploitation of natural sand as fine aggregate poses a risk of environmental damage, creating a need for alternative materials. This study aims to analyze the effect of glass waste substitution on the mechanical properties of high-strength concrete (design f'c of 40 MPa) with SikaCim Concrete Additive. The method used was a laboratory experiment on cylindrical specimens (10×20 cm) with glass waste substitution for fine aggregate at 0%, 10%, 20%, and 30%, including slump testing, compressive strength testing (Compression Testing Machine), and splitting tensile strength testing at 7, 14, 21, and 28 days. The results showed that compressive strength decreased consistently as the substitution level increased, from 37.66 MPa (normal concrete) to 35.37 MPa (10%), 34.01 MPa (20%), and 33.67 MPa (30%), a decline of up to 10.59%. In contrast, splitting tensile strength followed a non-monotonic pattern: it dropped sharply at 10% substitution (3.56 MPa; a 20.54% decrease), then rose again at 20% (3.74 MPa) and 30% (4.30 MPa), approaching the value of normal concrete (4.48 MPa), with the highest ft/√f'c ratio occurring at 30% substitution (0.741), exceeding that of normal concrete (0.730). It is concluded that within the 0–30% substitution range, glass waste did not produce an optimum point that increased compressive strength above that of normal concrete, but at 30% it provided a relatively better balance between compressive and splitting tensile strength, indicating that the feasibility of using glass waste cannot be assessed from compressive strength alone.
Pengaruh Limbah Kaca Sebagai Substitusi Agregat Halus terhadap Sifat Mekanik Beton Normal Haulida Isnaini; Hariyadi Haryadi; Maya Saridewi Pascanawaty
Jurnal Talenta Sipil Vol 9, No 2 (2026): Agustus
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v9i2.1507

Abstract

The increasing development of the construction industry has led to a growing demand for natural aggregates, while the accumulation of non-biodegradable waste glass continues to increase, posing potential environmental problems. One effort to reduce these impacts is to utilize waste glass as a partial substitute for fine aggregate in normal concrete mixtures. This study aimed to analyze the effect of waste glass as a partial replacement for fine aggregate on the mechanical properties of normal concrete, including compressive strength and splitting tensile strength. An experimental method was employed at the Civil Engineering Laboratory of Universitas Muhammadiyah Mataram using cylindrical concrete specimens with dimensions of 100 mm × 200 mm. The waste glass substitution levels were 0%, 10%, 20%, and 30% by weight of fine aggregate. Compressive strength and splitting tensile strength tests were conducted at the age of 28 days using a Compression Testing Machine (CTM). The results showed that the average compressive strength of normal concrete was 16.22 MPa, while the concrete containing 10%, 20%, and 30% waste glass achieved average compressive strengths of 26.37 MPa, 21.74 MPa, and 20.34 MPa, respectively. The highest compressive strength was obtained at the 10% substitution level. Meanwhile, the average splitting tensile strength of normal concrete was 2.01 MPa, whereas the concrete containing 10%, 20%, and 30% waste glass produced average splitting tensile strengths of 2.99 MPa, 2.48 MPa, and 2.20 MPa, respectively. The highest splitting tensile strength was also achieved at the 10% substitution level. Based on these findings, the use of 10% waste glass as a partial replacement for fine aggregate provides the most optimal improvement in the mechanical properties of normal concrete and has the potential to serve as an environmentally friendly alternative material for sustainable construction.
Co-Authors Adryan Fitrayudha Haulida Isnaini Maya Saridewi Pascanawaty Restu Anggara