混凝土压顶
Concrete topping
以上为机器翻译结果，长、整句建议使用 人工翻译 。
允许将符合这些要求的压顶材料用于强度超过鉴定试验中所测混凝土强度20%的圆柱体。
Capping materials conforming to these requirements is permitted to be used for cylinders with strengths up to 20 percent greater than the concrete tested in these qualification tests.
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