| 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 concrete mix for producing a freeze-thaw durable concrete, comprising cement, inorganic, hollow, spherical, deformable solid elements, which elements are deformable by crushing at a pressure of <1000 psi and/or by chemical disintegration, and optionally water, wherein said inorganic deformable solid elements are either included in said concrete mix in a dry state, or mixed with said cement at the time of preparing a wet concrete mix, are present at a level of less than or equal to about 2 vol % and 1.56 wt % relative to the volume of said wet concrete mix or a green concrete or a subsequently hardened concrete formed therefrom, or less than 1.7 wt % in the dry state based on the total weight of all dry materials, and have a maximum dimension of less than about 300 micrometers. |
