The diabase gravel almost was laminated cleavage, so the quality of aggregate by impurities and crushing was bad, segregation and bleeding of concrete made by the aggregate was heavy.
辉绿岩多为层状解理，决定了轧制或破碎的碎石骨料的质量较差，配制的混凝土离析和泌水严重；
2
This paper studies the reasons for low strength of post- placed aggregate concrete, and points oat that great bleeding is the main reason for low strength of the concrete.
对压浆混凝土存在的强度偏低现象进行了研究，指出了泌水量大是压浆混凝土强度较低的主要原因。
3
It was investigated that the effects of the different content micro-fines on the bleeding rate in manufactured-sand fresh concrete.