Thermal Measure And Crack Control Of Mass Concrete

As the economic development , the engineering construction scale in China 15 becoming larger and more complex. This makes the thermal crack Problem of the large-volume concrete more outstanding and common. The thermal crack Problem of the large volume concrete 15 very complicated,which 15 correlative with every field of construction. Controlling of the thermal crack of large volume concrete 15 related to the rock,structure,the building material,construction,and even the circumstance. The research in this field by the construction department is not enough and comprehensive. The covering area in the related codes 15 limited and narrow. Many Problems appearing in construction Practice have to be solved according to the experience, rather than theory. This Phenomena lead to the waste of work force,material and financial resource. And the construction accident always happens because of the ambiguity of the conceptions of thermal crack of large volume concrete or attending to one thing and losing another. The Production reason and resistance method of the thermal crack of large volume concrete are summed up in this Paper based on a large number of reference. And the resistance method was used in the foundation construction of two engineering buildings. The strict measurement to avoid the thermal crack was been adopted in the taches of material selection ,construction method,concrete irrigating and conserving technics. The inside and outside temperatures of the concrete foundation were inspected. The measurement results show that the temperature difference of the concrete foundation was in the rational range and the crack was avoided. The temperature inspecting results also proved the controlling measurements were rational and effective. The controlling measurements of the temperature difference and the inspecting results in this Paper will not only Provide convenience to the similar research,but also be used as a reference of theory study.