So it is different from normal concrete in development of early age performance and durability.

本文主要用试验方法研究自密实混凝土早期性能。

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Complicated volume changes of high performance concrete (HPC) is one of significant causes which results in its early-age cracking.

高性能混凝土复杂的早期体积变化是导致其易发生早期开裂的重要原因之一。

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