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- W3039748661 abstract "Abstract The ASTM C666 procedure is the common test method used for evaluating the freeze-thaw durability of conventional concrete, and it has been adapted for evaluating the freeze-thaw resistance of pervious concrete; however, it is argued the test method does not represent the field conditions of neither conventional nor pervious concrete. This study mainly focused on an experimental program to evaluate the freeze-thaw durability of pervious concrete specimens using the JC446-91 test method, which measures the change in compressive strength and mass after exposure to freeze-thaw cycles, as an alternative for ASTM C666. Various parameters affecting the freeze-thaw durability of pervious concrete, namely water to cement ratio (W/C), air entrainment, inclusion of sand, and coarse aggregate size were experimentally examined, and the results were evaluated using statistical analysis. It was observed that replacing 8% of coarse aggregate with sand and using a higher W/C resulted in higher strength and an improvement in the freeze-thaw durability. Although the positive effect of air-entraining admixture (AEA) on freeze-thaw durability of pervious concrete has been manifested by previous researchers, it was not clearly observed in this study. Also, change in coarse aggregate size did not significantly affect the strength and freeze-thaw durability of pervious concrete. This study revealed that the conditions and number of cycles used in JC446-91 were inadequate to evaluate the freeze-thaw durability of pervious concrete, especially for strong mixes. Therefore, considering the criticisms against ASTM C666 in representing field conditions of pervious concrete, more compatible and realistic test methods are required to evaluate the freeze-thaw durability of pervious concrete." @default.
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- W3039748661 date "2021-01-01" @default.
- W3039748661 modified "2023-09-29" @default.
- W3039748661 title "Experimental evaluation of freeze-thaw durability of pervious concrete" @default.
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- W3039748661 doi "https://doi.org/10.1016/j.jobe.2020.101617" @default.
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