The Application of Porous Concrete Filled with Soil and Sands for Low Volume Traffic Road

Pavements were usually planned as an impermeable layer to protect the subgrade from water intrusion which weakens the bearing capability of the subgrade. However, the more area to be protected from water ingress resulted in an abundant surface flow that caused reduction in green areas which impact on the reduction of water catchment areas. To anticipate this problem, the use of adequate strong pavement layer, but more environmentally friendly which allows the water to pass through the layer and be absorbed into the subgrade that could cut the surface flow but keep up the potency of the layer is expected. The purpose of such layer is possible for low traffic volume road. The objective of this study is to design the adequate strength of porous concrete filled with soil and sand for low volume traffic road. The study was conducted using the experimental method, namely by reducing the proportion of fine aggregate in the mix design of conventional concrete. Crushed stone aggregate used is a uniform size of 1-2 cm. The proportion of fine aggregate used is 30% of the proportion of coarse aggregate. The voids of each type of porous concrete were then filled with soil, natural sand and volcanic sand. The filled samples were then assessed for water permeability, speed of absorption and compressive strength. The test results with a variety of fillers of porous concrete, namely soil, natural sand and volcanic sand were obtained and analyzed. The highest vertical and horizontal permeabilities achieved with natural sand filled samples were 0.38 cm/Sec and 0.364 cm/Sec, respectively. The rate of absorption achieves the highest value of 0.337 for porous concrete filled with natural sand. The high compressive strength value of 5.71 MPa belongs to the porous concrete filled with volcanic sand. However, it is recommended that the filled porous concrete is only suitable for low volume traffic road such as road shoulders, parking lots and pedestrian paths.

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  • English

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  • Accession Number: 01634556
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 29 2017 1:53PM