Advances in Materials Science and Engineering / 2019 / Article / Tab 2

Research Article

Degradation Behavior of Concrete after Freeze-Thaw Cycles and Then Exposure to High Temperatures

Table 2

Details of the test specimens.

GroupNotationFreeze-thaw cyclesNumber of specimensExposure temperature (°C)Exposure time (h)Cooling method

Group 1F0-T20W03203Water
F0-T300W033003Water
F0-T400W034003Water
F0-T400A034003Air
F0-T500W035003Water

Group 2F25-T20W253203Water
F25-T300W2533003Water
F25-T400W2534003Water
F25-T400A2534003Air
F25-T500W2535003Water

Group 3F35-T20W353203Water
F35-T300W3533003Water
F35-T400W3534003Water
F35-T400A3534003Air
F35-T500W3535003Water

Group 4F45-T20W453203Water
F45-T300W4533003Water
F45-T400W4534003Water
F45-T400A4534003Air
F45-T500W4535003Water

Group 5F55-T20W553203Water
F55-T300W5533003Water
F55-T400W5534003Water
F55-T400A5534003Air
F55-T500W5535003Water

Note. “F#” denotes the freeze-thaw cycles (F0 = 0 cycles, F25 = 25 cycles, F35 = 35 cycles, F45 = 45 cycles, and F55 = 55 cycles); “T#” denotes the target temperature of high-temperature heating; “W” or “A” represents water- or air-cooling (natural cooling), respectively. For example, “F25-T400W” indicates that the specimen subjected to 400°C after 25 freeze-thaw cycles and then cooled by the water spray method.

We are committed to sharing findings related to COVID-19 as quickly and safely as possible. Any author submitting a COVID-19 paper should notify us at help@hindawi.com to ensure their research is fast-tracked and made available on a preprint server as soon as possible. We will be providing unlimited waivers of publication charges for accepted articles related to COVID-19. Sign up here as a reviewer to help fast-track new submissions.