One is Q, the ratio of voids content of coarse aggregates to the volume of mortar.
反映新拌混凝土中砂浆的体积与粗骨料紧密堆积时产生的空隙体积的比值；
In this paper, the test results of mixture ratio of the concrete using recycled aggregates (crushed concrete rubbles or crushed bricks) are given.
本文分别进行了利用碎混凝土块、碎砖块作为粗骨料的再生混凝土配合比的试验研究。
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