水泥混凝土路面裂缝或断裂的原因分析及防治

【摘要】 水泥混凝土路面,具有使用寿命长、抗压强度高、承载能力大、耐磨耗、水稳定性和热稳定性好、粗糙度和抗滑性能好,日常维护费用低的优点。在使用中受到诸多因素的影响,其受力情况是很复杂的。通常认为起决定作用的因素是:在多种外力的综合作用下,其主要力学指标为:抗弯拉强度(即抗折强度)。用于刚性路面的水泥混凝土标号不能用抗压强度作为主控指标,而应以28天龄期的极限抗弯拉强度,即极限抗折强度作为主要控制指标。更多还原

【Abstract】 Cement concrete pavement has the advantages of long service life, high compressive strength, large bearing capacity,wear resistance, good water stability and thermal stability, good roughness and skid resistance, and low daily maintenance cost. In practice, it is affected by many factors, and its stress is very complex. It is generally believed that the decisive factor is: under the comprehensive action of a variety of external forces, the main mechanical index is flexural tensile strength(that is, flexural strength). The compressive strength can not be used as the main control index of cement concrete label for rigid pavement, but the ultimate flexural strength of 28 days old, that is, the ultimate flexural strength should be taken as the main control index.更多还原