| 摘要 |
<p>The invention relates to a composition comprising a hydraulic binder, a low molecular weight glycol having the formula C<Sub>n</Sub>H<Sub>2n</Sub>(OH)<Sub>2</Sub> wherein n is an integer from 2 to 10, preferably 2 to 9, and a fluorinated surfactant capable of reducing the surface tension of pure water to a value below 30 mN/m at a concentration of 1% or less.</p><p>The invention also relates to a wet mortar or concrete composition comprising a hydraulic binder, a low molecular weight glycol having the formula C<Sub>n</Sub>H<Sub>2n</Sub>(OH)<Sub>2</Sub> wherein n is an integer from 2 to 10, preferably 2 to 9, and a fluorinated fluorinated surfactant capable of reducing the surface tension of pure water to a value below 30 mN/m at a dosage of 1% or less, water and sand and/or aggregates and/or fillers.</p><p>The invention also relates to a method for preparing same.
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