Concrete has the characteristics of rich raw materials, low price and simple production process. At the same time, concrete also has the characteristics of high compressive strength, good durability and wide range of strength. Because of these characteristics, it can be used not only in various civil engineering, but also in shipbuilding, machinery industry and other fields. Some people will ask: in the cold with low temperature, does this low temperature have an impact on concrete? The answer is yes. Let's take a look at the impact of low temperature on concrete

1.低温条件对混凝土强度的影响低温条件会降低水泥的水合速率,从而影响混凝土的强度发展。

1. Influence of low temperature conditions on concrete strength. Low temperature conditions will reduce the hydration rate of cement and affect the strength development of concrete.

2.低温条件对混凝土早期性能的影响已通过实验证明:浇筑混凝土时,如果温度较低,则初始凝结时间和终凝结时间会延长,对于混凝土的温度也会延长,后面的凝固时间会更加的明显。

2. The influence of low temperature conditions on the early performance of concrete has been proved by experiments: when pouring concrete, if the temperature is low, the initial setting time and final setting time will be prolonged, the temperature of concrete will also be prolonged, and the later setting time will be more obvious.

3.低温条件对混凝土抗冻性的影响混凝土的抗冻性与混凝土的冻融循环时的年龄有关,而混凝土的抗冻性受早期的影响。到多次冻融循环,循环成熟混凝土的抗冻性之间没有线性比例关系。

3. The influence of low temperature on the frost resistance of concrete the frost resistance of concrete is related to the age of concrete during the freeze-thaw cycle, and the frost resistance of concrete is affected by the early stage. To multiple freeze-thaw cycles, there is no linear proportional relationship between the frost resistance of cyclic mature concrete.

4.低温条件对混凝土体积稳定性的影响。对于低温条件下的混凝土结构,表面温度的降低速度明显大于内部温度的降低速度,从而导致更大的温度梯度和由此产生的温度应力。

4. The influence of low temperature conditions on the volume stability of concrete. For concrete structures under low temperature, the reduction rate of surface temperature is significantly greater than that of internal temperature, resulting in greater temperature gradient and resulting temperature stress.