oa Civil Engineering = Siviele Ingenieurswese - What is concrete?



Extracted from text ... What is concrete? 'CONCRETE IS A HETEROGENEOUS SYSTEM of solid discrete, gradiently sized, inorganic mineral aggregates, usually plutonic (feldspathosilicaceous or ferro-magnesian) or sedimentary- calcareous in origin, embedded in a matrix compounded of synthesized polybasic alkaline and alkaloidal silicates held in aqueous solution and coprecipitate dispersion with other amphoteric oxides, this matrix being initially capable of progressive dissolution, hydration, reprecipitation, gelatinization and solidification through a continuous and co-existent series of crystalline, amorphous, colloidal and crypto-crystalline states and ultimately subject to thermoallotriomorphic alteration, the system when first conjoined being transiently plastic during which stage it is impressed to a predetermined form into ..


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