Performance analysis of pervious concrete incorporating vermiculite as an additive material

Authors : Rahmad Pasca Try Valent, Lintang Dian Artanti, Tata Ardhita Pramesti

Pages : 54-59

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Publication Date : 2025-12-25

Article Type : Research Paper

Abstract :Pervious concrete is known for its ability to absorb water and reduce surface runoff, but it often suffers from low compressive strength. To address this limitation, this study investigates the incorporation of vermiculite as an additive material with the potential to enhance concrete strength. The objective of the research is to analyze the effect of varying vermiculite content on the compressive strength, porosity, and permeability of pervious concrete. Laboratory tests were conducted using vermiculite at 0%, 5%, 10%, and 15% by total aggregate weight. Cylindrical specimens (15×30 cm) were tested for compressive strength at 7 and 28 days, while porosity and permeability were evaluated at 28 days. The results indicated an increase in compressive strength from 10.55 MPa (0%) to 17.08 MPa (15%), a reduction in porosity from 19.13% to 3.14%, and a decrease in permeability from 0.070 cm/s to 0.008 cm/s at 28 days. These reductions are attributed to vermiculite filling the voids between aggregates, thereby limiting water flow paths. Consequently, while vermiculite effectively enhances the mechanical performance of pervious concrete, excessive use compromises its drainage function. A 5% vermiculite addition is considered the optimal limit, maintaining a balance between strength and infiltration capability.
Keywords : Basınç dayanımı, Geçirgenlik, Gözeneklilik, Gözenekli beton, Vermikülit

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