Construction method of corrosion resistant silica fume binding material in highway

Abstract

The invention discloses a construction method of a corrosion resistant silica fume binding material in a highway. The construction method comprises the following steps that (1) silica fume cement slurry is prepared, specifically, silica fume, cement, mineral powder, coal ash and gypsum are mixed with bauxite, and then mixed with water, and the silica fume cement slurry is obtained; (2) foam is prepared, specifically, a foaming agent solution is promoted to foam, and the foam is obtained; (3) foam silica fume concrete is prepared, specifically, the silica fume cement slurry and the foam are mixed, and the foam silica fume concrete is obtained; (4) the foam silica fume concrete is poured, specifically, the foam silica fume concrete is conveyed to a highway construction area through a pipeline, and automatic flowing and pouring are conducted; and (5) the foam silica fume concrete is maintained, specifically, after the foam silica fume concrete is finally set, watering maintenance is conducted. The construction method provided by the invention applies corrosion resistant silica fume binding material to high filling of the highway with foam concrete, the construction technology is simple, convenient and efficient, continuous pouring can be achieved, and the pouring quality conforms to the requirement of site construction.

Description

technical field [0001] The invention relates to a construction method of an anti-corrosion silica fume cementitious material in roads. Background technique [0002] The construction of expressways in mountainous areas is limited by terrain, landform, and hydrogeological conditions. It is inevitable to carry out high-fill expansion construction on the original roadbed; at the same time, in order to meet the overall planning requirements of the country and make better use of excavation As for earthwork resources, more and more high-fill subgrades will be used in the reconstruction and expansion of expressways. In high-grade highways in mountainous areas, fill and excavation roadbeds account for 80%, and high fill embankments exceeding 20m are not rare. With the promotion of national policies and the rapid development of traffic construction, the structure of high embankments will be further improved in terms of quantity and height in the future reconstruction and expansion of...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of the above-mentioned sulfate corrosion of cement materials, it is necessary to develop an anti-corrosion cementitious material suitable for high filling of highways