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Influence of temperature on efficiency of superplasticizing admixtures for concrete

Łukowski P.

Journal of Building Chemistry

2016

Vol. 1, iss. 1

32-36

Temperature is one of the most important factors affecting the efficiency of polymer admixtures to concrete, yet this relation is still not fully explained. The direction of changes depends on the type (chemical nature) of the admixture, and often also on its concentration and composition of the concrete mix. Taking into consideration the big diversity of the used polymer admixtures, it is very hard to predict their temperature characteristics; this requires detailed testing. It is possible to find out, on the base of the collected data, that in the case of the new generation of the superplasticizers an increase of temperature usually leads to diminishing of the admixture efficiency. This means the necessity of increasing dosage of the superplasticizers of new generation at higher temperature.