Physical and Hydraulic Properties of Porous Concrete

Abstract

The work presented includes a review of the state of art of porous concrete. Its purpose is to evaluate the potential use of porous concrete in constructions where the level of surface runoff justifies it. A review of the literature presented here has been necessary where parameters of special consideration have been defined in the dosage of permeable mixtures. The study includes the definition of porous concrete in terms of its main components: cement, coarse aggregate, water, additives, and sand, in little or no quantity, to cause the generation of an effective content of interconnected voids that allow rapid storm drainage. Given the reports of variables of high incidence in the mechanical behavior of porous concrete (resistance/permeability relationship), an investigation is warranted to synthesize the effects of the variables in the preparation of the mixture: water–cement ratio, granulometry, and morphology of the aggregates, compaction pressure, and curing techniques, among others. Likewise, the protocols for the characterization of porous concrete and additional aspects relevant to support the experimental phase are exposed, constituting a reference or anchor point for developing technologies associated with the manufacture of this material and the possibilities of its implementation in constructions.

Effect of Sand-to-Cement Ratio on Mechanical Properties of Foam Concrete

“…For the foam concrete at a fixed air volume quantity, it is found that the compressive strength increases with R wc contrary to the behaviour of conventional concrete/mortar [19][20][21]. This interesting phenomenon can be explained by the air-to-cement ratio (R ac ).…”

The Effect of Pore Structure on Impact Behavior of Concrete Hollow Brick, Autoclaved Aerated Concrete and Foamed Concrete

“…Porous concrete, as an energy absorption material, has been widely used for impact resistance in civil buildings [1], traffic engineering [2,3] and disaster reduction engineering [4]. To assess the ability of the materials to absorb the energy resulting from impact, a drop-weight impact test and split Hopkinson pressure bar test are commonly employed.…”