Showing papers on "Pervious concrete published in 1990"
TL;DR: In this paper, a physical model for describing the chemical ion diffusion in porous concrete is presented. But the model is limited to the case of porous concrete and it is not suitable for porous concrete.
Abstract: Chloride ion diffusion in porous concrete is one of the two major factors that cause corrosion to the reinforcing steel bars. A physical model is given in the present paper for describing ...
37 citations
Patent•
05 Oct 1990
TL;DR: In this article, plate-shaped concrete blocks exhibiting a significantly larger format than traditional paving slabs are proposed to reduce the noise generated by rolling traffic, and the concrete block is equipped at the sides with upright slots, which adjoin the absorption layer of porous concrete.
Abstract: In the case of earth coverings made from concrete paving slabs, the noise generated by rolling traffic is disadvantageous. In order to reduce the generation of noise, plate-shaped concrete blocks exhibiting a significantly larger format than traditional paving slabs are proposed. The top side of the concrete blocks consists of a sound absorption layer (13) of porous concrete. On the bottom side, the concrete block is curved inwards, so that the fringe areas are subjected to a higher load. This results in a stable situation. For the purpose of draining off the surface water, the concrete block is equipped at the sides with upright slots (16), which adjoin the absorption layer (13) of porous concrete.
10 citations