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Frost damage of early-age concrete is particularly harmful for the concrete mechanical resistance because the ice volume expansion causes micro-cracks in the concrete structures, and as a consequence it lowers the compressive strength of concrete. [4]
The use of Zemdrain CPF on the resistance to chloride penetration of concretes exposed to salt spray condition in hot climates; Technical Report No. 1303/92/6335, Taywood Engineering Ltd, R&D Division, September, 1992,(unpublished). Price, W.F. The effect of Zemdrain Controlled Permeability Formwork on the frost resistance of concrete.
The concrete or mortar is formulated to be sticky and resist flowing when at rest to allow use on walls and ceilings, but exhibit sufficient shear thinning to be easily plumbable through hoses. Shotcrete is usually an all-inclusive term for both the wet-mix and dry-mix versions invented by Akeley.
Integral damp proofing in concrete involves adding materials to the concrete mix to make the concrete itself impermeable. [ 4 ] Surface suppressant coating with thin water proof materials such as epoxy resin for resistance to non-pressurized moisture such as rain water or a coating of cement sprayed on such as shotcrete which can resist water ...
Self-consolidating concrete or self-compacting concrete (SCC) [1] is a concrete mix which has a low yield stress, high deformability, good segregation resistance (prevents separation of particles in the mix), and moderate viscosity (necessary to ensure uniform suspension of solid particles during transportation, placement (without external compaction), and thereafter until the concrete sets).
Foam concrete is produced by mixing cement or fly ash, sand, water, and a synthetic aerated foam, which provides stability to the air bubbles, in contrast to air-entrained concrete which is produced incorporating specialized admixtures directly into the concrete mix. Foam concrete offers excellent thermal and acoustic insulation properties ...
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