Research On Construction Technique And Mix Design Method Of Continuously Reinforced Concrete

Portland cement concrete pavement is one of the main type in China, cement road surface has obvious advantages of resources and cost. But with the development of transportation, in traffic and ordinary cement concrete pavement self-defects, exposed the shortcomings. Continuous reinforced concrete pavement (CRCP) has good entirety, smooth and comfortable, durability strong, long service life, less maintenance fee and life-cycle benefit economically reasonable and crack load transfer ability of higher characteristic, suitable for highway roads, in euramerican and overloading of developed countries, such as the airport and main highways were widely used. China did some research on CRCP work, but the related theory, method and application technology is not perfect, especially for reinforced concrete construction technology research is very backward. Although euramerican developed countries, such as the construction of large, but these countries include CRCP China failed to continuous reinforced concrete (CRC) proportioning design method.Based on sensitivity analysis and CRCP CRCP major disease, affect the performance of concrete CRCP main material parameters, strength, shrinkage and temperature shrinkage coefficient, therefore continuous reinforced concrete proportioning design not only with strength for the control indicators. Based on the analysis of domestic and foreign scholars research achievements influence CRC strength, shrinkage and temperature shrinkage of the main parameters of the coefficient of mix proportion design, according to relevant indoor test the systematic research of these parameters on the strength of concrete, shrinkage, temperature shrinkage effect coefficient. Combined with the experimental result water-cement ratio and concrete shrinkage, the relationship between temperature shrinkage coefficient, flexural strength and compressive strength of the relationship between the regression analysis and fitting relationship. Based on the sensitivity analysis and the main affecting concrete performance parameters of the mix proportion design, combined with the design ideas, balanced ordinary concrete road proportioning design method based on improved, suitable for half of the CRC experience design method of theory.At present, China in CRCP construction technology such as:aggregate selection, Regimen, crack active control, such as construction technology has not been done. Results of overseas research in this paper, the tobacco Wei highway project CRCP entity types for different surface, different way of laying steel, steel rust-proof measure, control, crack active test section were made, and the conduct of these trials sections long-term follow-up observations. The main contents of different experimental observation in paragraph number crack, crack type, crack width, thrust, mass and coefficient of Pavement Deflection and so on, according to tracking observations, for the above test section were analyzed, which made for China's national conditions The CRCP construction technology.