Utilization of By-Products and Waste Materials from Steel Processing Industry to Produce Sustainable Green Pervious Concrete in Indonesia Patria Kusumaningrum (a*), Muhammad Risnan (b)
(a,b) Civil Engineering Department, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology
Jl. Ganesha 10 Bandung, 40132, Indonesia
*patria.k[at]itb.ac.id
Abstract
Pervious concrete is a reliable solution for environmentally friendly concrete pavements, especially for densely populated urban areas. Some of the benefits of pervious concrete to the environment are mainly increasing the absorption of water into the soil, so that it can quickly purify rainwater runoff, recharge groundwater, reduce rainwater runoff, and when combined with well-designed drainage system it can minimize the potential of flooding. The uniqueness of this concrete is that it uses few or no fine aggregate at all, with the main composition consisting of coarse aggregate, binder (cementitious/pozzolanic materials), water and admixture. The development of pervious concrete with steel slag as raw material as coarse aggregate and GGBFS as a partial replacement for cement is carried out to address environmental problems caused by impervious pavement that is commonly used in urban areas, as well as to increase the added value of material by-products of the steel processing industry. The goal of this research is to obtain a mixture with a compressive strength of up to 28 MPa, the maximum value required by ACI 522-10R. From the experimental results, the compressive strength of pervious concrete on the 7th day reached 15.9 MPa to 25.4 MPa, therefore for 28 days strength of concrete it will have higher strength so that it can be categorized as High Strength Pervious Concrete. Such compressive strengths of pervious concrete have shown significant increase of 2-3 times higher than those of previous research regarding pervious concretes in ITB.
Keywords: green pervious concrete, low cost, low carbon, high strength, permeability, void ratio
