A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Freeze-thaw durability of microwave cured air-entrained concrete
The strength development of concrete can be greatly accelerated by curing with microwave energy. Microwave curing can therefore be beneficial to construction operations such as concrete precasting and repair. To provide freeze-thaw durability for infrastructure applications, air entrainment has to be introduced. In this investigation, the freeze-thaw resistance of microwave cured air-entrained concrete is measured, and compared to that of air-entrained concrete under normal curing. Their compressive strength at 14 days and air-void characteristics are also measured and compared. The test results indicate that microwave curing can impair the freeze-thaw durability of high water-cement concrete but not for low water-cement concrete. Also, under microwave curing, the decrease in strength due to air entrainment becomes more significant. Based on these observations, it is recommended that for microwave cured air-entrained concrete, a low water-cement ratio should be employed.
Freeze-thaw durability of microwave cured air-entrained concrete
The strength development of concrete can be greatly accelerated by curing with microwave energy. Microwave curing can therefore be beneficial to construction operations such as concrete precasting and repair. To provide freeze-thaw durability for infrastructure applications, air entrainment has to be introduced. In this investigation, the freeze-thaw resistance of microwave cured air-entrained concrete is measured, and compared to that of air-entrained concrete under normal curing. Their compressive strength at 14 days and air-void characteristics are also measured and compared. The test results indicate that microwave curing can impair the freeze-thaw durability of high water-cement concrete but not for low water-cement concrete. Also, under microwave curing, the decrease in strength due to air entrainment becomes more significant. Based on these observations, it is recommended that for microwave cured air-entrained concrete, a low water-cement ratio should be employed.
Freeze-thaw durability of microwave cured air-entrained concrete
Frost-Tau-Wechsel-Beständigkeit von mikrowellengetrocknetem Luftporenbeton
Pheeraphan, T. (author) / Leung, C.K.Y. (author)
Cement and Concrete Research ; 27 ; 427-435
1997
9 Seiten, 7 Bilder, 2 Tabellen, 10 Quellen
Article (Journal)
English
Freeze-Thaw Durability of Microwave Cured Air-Entrained Concrete
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