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A fairly well-defined reaction front can often be observed in thin sections; ahead of the front the concrete is normal, or near normal. Behind the reaction front, the composition and the microstructure of concrete are modified. These changes may vary in type or severity but commonly include: Extensive cracking; Expansion
Example of flat piece of concrete having dislodged with corroded rebar underneath, Welland River bridge across Queen Elizabeth Way in Niagara Falls, Ontario. The expansion of the corrosion products (iron oxides) of carbon steel reinforcement structures may induce internal mechanical stress (tensile stress) that cause the formation of cracks and disrupt the concrete structure.
In 2023, the Master Builders Solutions Holding allocated over 3% of its turnover to R&D, resulting in over 80 ongoing pipeline projects. One notable innovation is the superplasticizer MasterCO 2 re , [ 9 ] facilitating the use of clinker-reduced cement types in concrete production and achieving substantial CO 2 savings up to 50%.
The initiation time is related to the rate at which carbonation propagates in the concrete cover thickness.Once that carbonation reaches the steel surface, altering the local pH value of the environment, the protective thin film of oxides on the steel surface becomes instable, and corrosion initiates involving an extended portion of the steel surface.
KFS may refer to: CloudStore (previously Kosmosfs), Kosmix's C++ implementation of the Google File System; Kenya Ferry Services, operator of the Likoni Ferry service across Kilindini Harbour; Klippel–Feil syndrome, a rare congenital condition; Koç Financial Services, owner of the Turkish bank Koçbank
Stamped concrete is an architectural concrete that has a superior surface finish. After a concrete floor has been laid, floor hardeners (can be pigmented) are impregnated on the surface and a mold that may be textured to replicate a stone / brick or even wood is stamped on to give an attractive textured surface finish.