- 張悅然,張永娟,張 雄
2009年第5期
摘要
引用本文
摘 要:混凝土凝結硬化階段的抗擾動性能是指混凝土在此期間經過振動的干擾,其強度發展不受影響的能力,這對于在不中斷交通的情況下對橋梁進行維修和加固具有重要意義。本文在定義混凝土貫入阻力值與凝結硬化階段初期、中期及后期的對應關系基礎上,利用超聲法對混凝土抗擾動性進行了研究,對混凝土凝結硬化初期、中期和后期的強度變化進行了分析,得出了混凝土在凝結硬化階段的初期和后期具有一定的抗擾動性,但凝結硬化中期混凝土抗擾動性能最差的結論。
Abstracts: The anti-disturbance of concrete in the setting and hardening period means that the ability of strength development of concrete is not effected by the vibrating disturbances, which is very important to the maitaining and strengthening of bridges without traffic interruption. In this paper, based on the corresponding relationship between penetration resistance value of concrete and the initial, mid, or late stages of the period of setting and hardening, the anti-disturbance performance of concrete is studied by ultrasonic method and the strength charnge of the initial, mid, and late stages is analyzed. As a result, in the initial and late stages of the period of setting and hardening of concrete, there is some anti-disturbance performance, but the anti-disturbance of concrete is the worst in the mid stage.