Conclusions
Our study of the comparative effects of surfactants on the mobility and air content of concrete mixes, and the strength, water, and frost of resistance mortars and concretes revealed the superiority of complex additives, composed of plasticizing and air-entrainment or organosilicon surfactants. The principal advantage of these complex surfactant additives is elimination of the reduction in strength of the mortar and concrete, usually observed in concretes and mortars with hydrophobizing and air-trapping additives, further advantages being the improvement of the water and frost resistance of the concrete.
It is more advantageous to use composition of hydrophobic and plasticized portland cements with plasticizing, air-entrainment, and organosilicon additives, because the incorporation of one of these additives in cement during grinding, and incorporation of the other in the concrete mix together with the mixing water, makes it possible to utilize the beneficial properties of surfactants for speeding up the grinding of cement, increasing its storage life and the plasticization of the concrete mix, and prolonging the service life of the concrete.
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Additional information
Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 7, pp. 15–19, July, 1971.
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Tarnarutskii, G.M., Shubert, G.N. Effect of complex surfactants on the principal physicomechanical properties of mortars and concretes. Hydrotechnical Construction 5, 621–626 (1971). https://doi.org/10.1007/BF02397658
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DOI: https://doi.org/10.1007/BF02397658