The Preliminary Study of Fire Damage,Freeze-Thaw or Dustfall of Pervious Concrete

• Main Authors: Yao-Tung Hsieh, 謝耀東
• Other Authors: Ming-Gin Lee
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/01767653581751541885

碩士 === 朝陽科技大學 === 營建工程系碩士班 === 97 === Pervious concrete can reduce runoff capacity of pavement area, decreasing set up a storm-water detention, reducing the amount of requiring rain drainage pipes, and rainwater can filter into ground, allowing groundwater resources to renew in time. If pervious concrete is used in the highway rigid pavement, the flexural strength of pervious concrete is required to reach 45 kg/cm2 strength specification. Fire damage, freeze-thaw or dust-fall should be important factors since European countries have been used pervious concrete in buildings construction. By this study of pervious concrete will be valuable for design and construction of practice. The study results were showed that the compression strength of pervious concrete specimen through freeze-thaw test is lower than the control one, the flexural strength of pervious concrete specimen through 600 freeze-thaw cycles first decrease and increase 20% later. It could hardly be detected any crack in the fire-damage test at the temperature of 700 ℃ above and fire duration of 2 hours. There is some damaged influence on strength after the fire-attack test, the strength loss can range from about 20％~60％. Dust fall accumulation in simulating 20 years was a minor factor for the field permeability of pervious concrete pavement.