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RCC has a small amount of cement, good durability, speed of construction, cost savings and other advantages. Stabilized soil mixer is a continuous twin-shaft mixer, single output of up to 400t / h, but mix cylinder shorter mix stirring time is about 10s. Study Mixing factors based on the one hand, by optimizing the composition design of RCC, in order to shorten the mixing time, on the other hand, through the transformation of the the Blender internal structure to improve the mixing efficiency, to achieve a stabilized soil mixer Continuous mixing RCC construction technology. Stirred fresh concrete consistency, the relationship among the mechanical properties of concrete: the consistency of fresh concrete decreases gradually with the growth of the mixing time, the mechanical properties of the RCC gradual growth and stabilize; found through the comparison of the different mixing time appropriate to reduce the concrete consistency conducive to concrete Stir in shorter mixing time. The experimental contrast the agitation 20s mixing the 120s two kinds of different circumstances aggregate maximum particle size, the amount of cement, water-cement ratio, sand ratio, as well as slurry aggregate the RCC work performance and mechanical properties, and in this basis on the optimal ratio of RCC based on a short mixing time. The results show that the amount of cement of 280 kg/m3, the water-cement ratio of 0.5, the maximum particle diameter using 31.5mm, the sand rate was 31%, and the stirring time for concrete improvements VC value 10s 20s conditions, through the RCC 28 days after the forming of the flexural strength of 4.4Mpa, compressive strength 37.2Mpa. Using stabilized soil mixing plant mixing RCC construction related to the transformation of the mixing machinery: add water, add a point at the feed inlet to increase the mix of pre-wet process, which will help the moisture evenly dispersed within a relatively short period of time, effectively improve mixing efficiency; change stirrer last two rows of the mounting angle of the stirring blade, to increase the residence time of the mixture in the mixing tank; will stabilize the soil mixing station yield decreased to about 200t / h, to prolong the stirring time so that RCC mix to achieve the purpose of homogenization. Test road test results show that the design requirements are met, based on the stabilized soil mixer construction of RCC work, mechanical properties, flatness, and the construction process is reasonably practicable.
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