Post Date:12,Dec,2022
Cement concrete pavement is a common pavement at present. Only by comprehensively ensuring the strength, flatness and wear resistance, can high-quality traffic be achieved. This paper makes a comprehensive analysis on the construction of cement concrete pavement in order to improve its performance and meet the needs of high-quality traffic.
Pavement engineering is the most important part of road construction engineering. It not only uses a lot of materials, but also has complex processes. If it is not handled properly, problems will occur, affecting traffic safety. The most direct consequence of improper pavement treatment is that sensitive structures will be generated due to the change of external environment temperature, resulting in various problems of pavement quality. Different regions need to comprehensively select the pavement form according to their own environment, and comprehensively improve the cognitive ability of pavement raw material selection, grading composition design, test detection level, construction process control, process level, equipment technology level, construction environment, etc., so as to lay a foundation for the construction of high-quality highways. At present, the most common pavement is cement concrete pavement, which has high stability due to its compression, bending and abrasion resistance. At the same time, this kind of pavement also has many advantages, such as long service life, less daily maintenance costs, and is conducive to driving at night. In order to ensure that the cement concrete pavement can play its due role, it needs careful design and strict construction, so as to ensure the quality and give play to the advantages of cement pavement.
Selection of additive water:
Cement construction requires more admixtures, which can improve the strength and hardness of cement. The admixtures mainly include water reducing agent, fluidizing agent and other materials. By mixing with cement, the durability of concrete can be comprehensively improved. Clean water without impurities shall be selected for use. Water with impurities cannot be used, which will affect the hardening of cement.
Influence of additive amount on concrete slump:
Additive is an important material. Its amount has a great impact on the concrete slump and is one of the main factors. Additive is a catalyst to promote the physical and chemical properties of concrete. Too much or too little will not produce good results.
Influence of grading change on concrete slump:
Grading change will affect the concrete slump to a large extent. If the grading is unqualified, construction quality problems will occur. With the same water content and water cement ratio, the slump of fine aggregate concrete is smaller and more stable than that of coarse aggregate concrete. During concrete mixing, it is necessary to control the feeding of aggregate bin to ensure the stability of aggregate grading of each bin.
Post time: Dec-12-2022