High Amount Of Ground Slag High Performance Pavement Concrete Research

Jilin province located in southeast part of China, it belongs to the east moist seasonally frozen region. In this region, the cement concrete pavement not only endures the serious vehicle overload, but also is affected by rain fall in summer, freezing-thaw cycles in spring and winter and diurnal difference in temperature, therefore, this region cement concrete pavements are destroyed seriously. This paper experiment on the HPPC with fine slag in southeast area firstly by the system research.The paper investigates the disease of the cement concrete road of Jilin firstly, confirming the direction of pavement cement concrete material modification in this region. By original material comparing experiment, it confirms the various original materials of the high performance concrete and fine slag. This research bases on the common concrete design method, consulting the requirement of high performance pavement concrete, confirming the mix design by orthogonal test. After confirming HPPC mix, the mechanical property is researched by rupture strength test, compressive strength test, static elastic modulus and dynamic elastic modulus test, and the durability is researched by abrasion resistance, frost resistance, shrinkage, impermeability and fatigue resistance to confirm the mix. This paper also researches the micromechanism by SEM, mercury injection method to reveal the connection between the microscopic and macroscopic.