回弹仪测定水泥混凝土路面强度时,测点间距离不应小于多少?

2025-03-17 01:53:06
推荐回答(1个)
回答1:

4.1测区和测点布置

1)当为水泥混凝土路面时,将一块混凝土板作为一个试样,试样的选择随机取样方法决定。每个试样的测区数不宜少于10个,相邻两测区的间距不宜大于2m;测区宜在试样的可测表面上均匀分布,并宜避开板边板角。

2)对其他混凝土构造物,测区应避开位于混凝土内保护层附近设置的钢筋,测区宜在试样的两相对表面上有两个基本对称的测试面,如不能满足这一要求时,一个测区允许只有一个测面。

3)测区表面应清洁、干燥、平整,不应有接缝、饰面层、粉刷层、浮浆、油垢等以及蜂窝、麻面,必要时可用砂轮清除表面的杂物和不平整处,磨光的表面不应有残留粉尘或碎屑。
4)一个测区的面积宜不于200mm×200mm,每一测区宜测定16个测点,相邻两测点的间距不宜小于3cm。测点距路面边缘或接缝的距离应不于5cm。

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