The concrete compressive strength cannot meet the requirements of the statistical or non -statistical law.
There are mainly the following reasons for the insufficient strength of the concrete: the concrete combination ratio is not proper; the mixing production is not strictly submitted according to the coordination ratio; the mixing time is insufficient and the uniformity is poor; the test block production does not meet the requirements of the regulations.
The consequences caused by unqualified concrete strength are mainly manifested in the following aspects. "Structural carrying capacity decreases; anti -penetration, frost resistance and durability decreased, so insufficient concrete strength must be serious
What should I do if the newly poured concrete rebound value is not enough? If the intensity is not enough, the poor is small, hurry up the time to spray water and maintain, see if it can be improved 28 days ago. The concrete enhancer can quickly and effectively increase the surface rebound value.
The concrete enhancer can quickly penetrate to the inside of the concrete, and reacts with the unwateligated cement and cement hydroxide in the concrete. Increase the density of concrete, greatly improve the strength and hardness of the surface layer of the concrete, and form a long -term closed, firm as rock, and hard like steel. In addition, it also has both carbonization depth and improved durability years.
In today's various constructions, the application of concrete, industrial and civil buildings, railway and highway construction projects is becoming more and more widely used, and it has become one of the main construction technologies of modern construction engineering construction. In the construction of concrete engineering, any link has a direct relationship with its quality. The control of concrete strength is an important link in construction control. Only through the quality control of the construction stage, some defects in the concrete construction process are reasonably avoided in reasonable avoidance of the construction process. In order to ensure high -quality engineering quality.
Measures for the prevention and treatment of lack of concrete strength are::
1. Correct cooperation ratio design. Due to the current raw material supply channels and unstable quality, especially a considerable part of the cement is produced by the establishment kiln. It is unqualified in stability, and the strength deviation is large. Cement must be checked first and then used, not alone to determine the cooperation ratio.
2. Whether it is pre -mixing concrete or on -site stirring, it should be carried out in strict accordance with the cooperative ratio, and it is strictly forbidden to change it at will.
3. Strictly stir in strictly in accordance with the specified stirring time specified in the regulations or the mixer to ensure the uniformity of the mixer.
4. Make test blocks in accordance with regulations and timely maintain standards.
