First, use 1, 2 secondary grouting equipment installation, installation of steel column base 3, a variety of machines installed electrical equipment without horns flow grout 4, anchor bolt anchor column based grouting rock foundation grouting 5 frame joints Next, 6 bridge joint reinforcement, grouting post-tensioned precast, prestressed bridge pouring 7, transform the concrete foundation slab reinforcement column walls together and repair Second, the technical characteristics 1, high strength grout early strength: equipment installed three days to run production. 2, grouting material gravity state: the scene just after mixing with water, poured into the device directly to the foundation, without shock ramming device can fill all the gaps basis. 3, grouting material micro-expansion: to ensure close contact between the equipment and infrastructure. 4, grout no rust, anti-oil seepage. 5, grouting material durability: 200 million times fatigue test, 50 freeze-thaw cycle experiments no significant changes in intensity