Both Plasticizing and Air-Entraining Effect on Cement-Based Material Porosity and Durability
Tolegenova A. Skripkiunas G. Rishko L. Akmalaiuly K.
July-1 2022MDPI
Materials
2022#15Issue 13
The influence of a complex application of both plasticizing and air-entraining effects on concrete with polycarboxylate ether superplasticizer (PCE), air-entraining admixture (AIR), or an anti-foaming agent (AF) is analyzed in this paper with considerations for on the air content, workability, flexural and compressive strength, and freezing–thawing resistance of hardened cement mixtures. The effect of the complex behavior of PCE, AIR, and AF on the porosity of hardened cement mortar (HCM) and freezing–thawing resistance was investigated; freezing–thawing resistance prediction methodology for plasticized mortar was also evaluated. The results presented in the article demonstrate the beneficial influence of entrained air content on consistency and stability of cement mortar, closed porosity, and durability of concrete. Freezing–thawing factor KF depending on porosity parameters can be used for freezing–thawing resistance prediction. With both plasticizing (decrease in the water–cement ratio) and air-entraining effects (increase in the amount of entrained air content), the frost resistance of concrete increases, scaling decreases exponentially, and it is possible to obtain great frost resistance for cement-based material.
air-content , air-entraining admixture , cement , freeze-thawing resistance , plasticizing , porosity , strength
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Department of Construction and Building Materials, Satbayev University, Satpaev str. 22a, Almaty, 050013, Kazakhstan
Department of Building Materials and Fire Safety, Faculty of Civil Engineering, Vilnius Gediminas Technical University, Sauletekio al. 11, Vilnius, LT-10223, Lithuania
HeidelbergCement Klaipeda Research Laboratory, Švepelių g. 5, Klaipėda, LT-94103, Lithuania
Department of Construction and Building Materials
Department of Building Materials and Fire Safety
HeidelbergCement Klaipeda Research Laboratory
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