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Does porosity affect the strength and properties of building materials?
Wiki User
∙ 13y ago
Yes. Porosity is the void space between grains or clasts of a solid material such as the gaps between the grains in sandstone.
Rocks that have higher porosity are typically less stiff at small strain values than more porous rocks as the initial deformation closes up the pore spaces which is relatively easy to do compared to causing deformation of the solid clasts.
Pore spaces are also preferential pathways of weakness through a material and as such fractures are more likely to form connecting up porous regions of a solid. As such the more porous a given material, the easier it will be for a fracture to propagate through it.
Also porous materials are more likely to contain water which can have a signficant impact by causing significant reductions in the materials the compressive strength.
Wiki User
∙ 13y ago
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