Analysis Of Internal Temperature And Humidity Evolution And Deformation Of The Construction Waste Recycling Embankment In Xi'an To Xianyang North Ring Line

At present,there are contradictions between the high demand for materials in China and the shortage of raw materials for construction,between the extensive disposal of construction waste and environmental protection,and between the demand for construction waste recycling and the lack of technological innovation.To alleviate these contradictions,the research on the application of recycled materials of construction waste materials in embankments should be carried out to solve the technical problems of reuse of construction waste materials.This paper is based on the project of the Ministry of Transport of China for the construction of a science and technology project “Research on Key Technologies for the Scaled Comprehensive Utilization of Construction Waste in Highway Engineering”.The internal state(temperature and humidity and long-term deformation)of the embankment in the test section of the construction waste recycling material embankment is the subject of research.Tests,field tests,and theoretical analysis are used to study the internal state of embankment construction waste recyclable materials.The main research contents and conclusions are as follows:Through long-term(690-day)saturated water loading test results in the laboratory,the specimen deformation is divided into instantaneous deformation and long-term deformation,and the long-term deformation phase is divided into three sub-stages;combined material gradation,density,water absorption,crushability,CBR test results,that the construction of solid waste recycling materials have good performance,can meet the performance requirements of embankment materials.Combining the measured temperature,humidity,and deformation data of two sections of the retaining wall section and the arched slope section of the test section of the field embankment,the traction relationship between the internal temperature of the embankment and the embankment settlement was analyzed.By analyzing the changes of temperature and humidity inside the embankment at two sections,it is believed that the temperature and humidity inside the embankment conform to the sine function,and the temperature amplitude is related to the embankment depth.The embankment moisture at the retaining wall is more stable than the embankment at the arch slope protection.The relationship between temperature and humidity is known as the influence range and relationship of embankment temperature at the retaining wall and the arch slope protection on the humidity;through analyzing the longterm deformation rules and characteristics of the embankment in construction waste,the internal humidity of the embankment can be known by combining the changes in the humidity inside the embankment.The change is an important cause of the long-term deformation of the embankment,and the calculation formula of settlement deformation applicable to different sections is obtained.Finally,according to the long-term deformation rules of embankment,the long-term deformation control standards and cross-sectional deformation difference control standard recommendations for different types of embankment sections are given.Combined with the analysis of temperature and humidity changes,it is more conducive to the embankment internal temperature and humidity and settlement stability.The section form and section optimization method.The construction waste recycling material is considered to be a good road building material,and can be used as a new type of environmental protection material in large-scale application of embankment projects.