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苏联的水利工程建设从西部转移到东部,零下60℃严寒的气候和漫长的冬季,使水利施工和管理条件发生了很大的变化,工作变的比较困难了。气候的影响,混凝土的应力值可能超过混凝土的受拉强度极限,并使其表面产生裂缝,这些裂缝在运用中的建筑物上可以观察到。在施工过程中完全消除位于严寒地区的大体积混凝土建筑裂缝的形成,到目前为止还不成功。近几年产生了用少水泥的混凝土混合料来建造坝的趋势。但是用低标号混凝土带来了透水性问题,要求内部区域的混凝土有可
The construction of the Soviet Union’s water conservancy projects was transferred from the west to the east. The cold climate of minus 60 degrees Celsius and the long winter months caused great changes in water conservancy construction and management conditions, making work more difficult. Due to the climatic effects, the stress of concrete may exceed the tensile strength limit of concrete and cause cracks on its surface, which can be observed on the building in use. In the construction process to completely eliminate the formation of cracks in large-volume concrete structures located in severe cold areas, so far unsuccessful. In recent years there has been a tendency to build dams with less concrete mixes. However, the use of low-grade concrete brings about water permeability problems that require concrete in the interior area