A big technical problem for mass concrete structures during pouring is how to control crack expansion.

大体积混凝土在浇筑中的一个重要技术课题是控制裂缝扩展。

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By reasonable pouring, mix proportion optimizing, effective temperature control and reasonable curing, the concrete quality of spillway tunnel is guaranteed and no crack found.

通过合理选择浇筑措施、优选配合比、有效的温度控制以及合理的养护，目前，泄洪洞各方面质量均满足要求。且：禾发现裂缝。

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For the cracks disease of bituminous pavement, the paper proposed a new repairing technology, and introduced the structural performance of GF-260 crack-pouring machine.

针对沥青路面出现的裂缝病害问题，提出了一种新的修补工艺，并对新型GF - 260型沥青路面灌缝机的结构性能特点进行了介绍。

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