Durable concrete and method for producing the same

摘要

A concrete mix for producing freeze-thaw durable concrete having enhanced strength properties, like compressive strength, abrasion resistance, impact strength, toughness, is disclosed. The novel concrete mix contains deformable solid elements in place of 4-8% entrained air for good durability of concrete under freeze-thaw cycles.

主权项

1. A hardened concrete resistant to cracking in a freeze-thaw environment, comprising the following components:
cement; aggregates; optionally admixtures; and deformable spaces containing physical or chemical remnants of inorganic disintegrated solid elements, wherein the total volume of said deformable spaces is less than 2%, and the maximum dimension of said deformable spaces is less than about 300 micrometers, and the distance between the deformable spaces is no greater than about 200 micrometers, so as to prevent a pressure build-up in capillary pores of cement gel exceeding 1000 psi upon freezing of water within the capillary pores, said hardened concrete having a density above about 1.5 g/cm3.