| Kunming Iron and Steel Company has a large number of abandoned steel mill slag piles, it takes up a lot of land resources, and caused pollution to the local environment in anning Kunming province. In order to safely and effectively use steel slag applied to road engineering, waste utilization while reducing environmental pollution slag.This study peace of anning Kunming steel slag as the research object, Explored the road performance, Pavement road performance and subgrade, pavement construction feasibility of steel slag used as subgrade, Put forward some technical indicators to facilitate the promotion of the use of steel slag.Through laboratory test analysis and test sections of paving and testing, we carried out following aspects of research:①Analysis physical properties of steel slag, mineral composition, swelling and other basic performance based on Yunnan anning steel test;②Analysis laboratory tests and the test section through the paving of the aging steel slag directly as subgrade stability and suitability,By the interior CBR and resilient modulus test and field deflection tests, it shows that steel slag roadbed construction is convenient, high intensity and large stiffness;③Mix the slag and ordinary machine rolling stone composed of composite blended slag cement stabilized macadam mixture, To7d unconfined compressive strength and splitting tensile strength, modulus of resilience as a reference index, concluded the best content of derived slag cement stabilized gravel Mixture rolling,analysis the slag cement stabilized gravel road performance of laboratory test According to the optimized mix proportion;④Paving the stability of steel slag cement macadam mixture test sections and later determined and observed, According to the test section of the observational data, proposed targets and paving construction control precautions;⑤Make a preliminary analysis and evaluation base of engineering applications, economic and environmental impact on Steel slag roadbed, slag cement stabilized macadam, Conducive to the promotion of road construction projects. |
