This paper describes the use of cement-based waterproofing screed and waterproofing coating, in which 10% of the original amount of cement was replaced by fly ash and 2% of the crystallization admixture was added by weight of cement, as a mean of protection of concrete against aggressive environments. The modified materials were applied to the underlying concrete and subjected to testing of physical and mechanical properties after exposure to effects of aggressive environments for up to 18 months. The results of the analysis have shown that after the application of waterproofing materials, there is a sufficient development of the crystals in the underlying concrete to enhance its durability. Thus, it is possible to use fly ash functionally and efficiently in polymer cement systems as a substitute for the cement together with the crystallization admixture.
This article describes test and results of long term effect by sulphate environment on new designed crystalline technology based material with fly-ash as partly cement substituent. At this article are presented results of new developed modification, which was the most effective and suitable for further commercial production during long term physical and mechanical tastings. Main aim of the experiment was to analyze ability of this new material to develop crystalline structure in capillary system and proof effectiveness of new developed crystalline structure in concrete pore system affected by long term sulfur medium attack.
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