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对混凝土的沉降所引起的分层现象及水泥石的微观结构进行了阐述 ,并对混凝土的强度和密实度提高提出了改善措施。
The stratification caused by the settlement of concrete and the microstructure of cement stone are expounded, and the improvement measures are put forward to improve the strength and compactness of concrete.