THE EFFECT OF POROUS CONCRETE WITH ARTIFICIAL AGGREGATE HANDLING ON EROSION REDUCTION IN SLOPE AND SANDY CLAY CONDITIONS

Abstract

Erosion is a geological process that abrades the surface of the topsoil. This process is caused by factors such as the intensity of rainfall, resulting in soil splashes due to its kinetic energy (J/m1), coupled with the runoff due to the slope, which is influenced by soil type and land cover. The characteristics and topography of the soil type may cause damage to the topsoil and occasionally increase the volume of sedimentation. Therefore, infrastructural buildings for road safety, such as cliff protection on a slope and irrigation building walls, require good security to avoid collapse or loss of slope stability. Furthermore, the occurrence of erosion can be mitigated with the production of a surface layer with a porous concrete paving structure that reduces the amount of kinetic energy acting on the soil surface layer. Additionally, the positive effects of porous concrete layers on slope stability are discussed using: geo-mechanical effects such as soil reinforcement with shaft concrete; soil hydrological effects such as the suction regime of the soil, which is influenced by the absorption of water flowing through the concrete shaft; and the effect of using artificial aggregate such as a sustainable material in porous concrete. The results of this research show that the geo-mechanical effects tend to be more relevant than the hydrological effects during the rainy season in different soil types and different slopes with sandy loams.