论文部分内容阅读
总结了目前水泥混凝土路面板底脱空评定存在的问题和难点,对比分析了各种检测方法的原理和特点,并选择了具有代表性的落锤式弯沉仪、探地雷达和钻芯取样等方法在实际工程中进行互相验证。结果表明,探地雷达速度比较快,但是判断不够精确;落锤式弯沉仪理论上还不太成熟,目前只能粗略判断,但是相对效果比较好,尚需要建立合理的评价标准。
The existing problems and difficulties in the evaluation of voidage of cement concrete pavement slab are summarized. The principles and characteristics of various detection methods are compared and analyzed. The representative drop-weight deflectometer, ground penetrating radar and core sampling Other methods in the actual project to verify each other. The results show that the GPR is fast, but the judgment is not accurate enough. The drop - weight deflectometer is not mature enough in theory, so it can only be roughly judged at present. However, the relative effect is good and a reasonable evaluation standard needs to be established.