China Liquid pouring Ready-mixed flow solidified soil Soil stabilizer Foundation pit backfilling Mine tunnel backfilli

I Overview

Pre mixed fluidized solidified soil is a new type of building material that fully utilizes the foundation soil after excavation of fertilizer tanks, foundation pits, or waste. After adding a certain proportion of soil solidification agent, cement (or no), and water, it is thoroughly mixed and evenly through specific processes and machinery to form a pumpable and flowable reinforcement material, which is used for backfilling and pouring various fertilizer tanks, foundation pits, pipe trenches, pipe galleries, and mine tunnels.

Pre mixed fluidized solidified soil has high strength and flowability suitable for pumping construction. It not only has fast construction speed, but also forms a pre mixed fluidized solidified soil with high strength, controllable quality, low cost, wide applicability, and environmental friendliness. It is a very good construction material.

II Scope of application

1. After the soil is taken out from the ground by special equipment, it is premixed by ground machinery to form ready-mixed fluid-solidified soil slurry, and at the same time, the ready-mixed fluid-solidified soil slurry is poured or pressed into the hole to form ready-mixed fluid-solidified soil pile. It is used as an reinforcement of composite foundations, or solidified fluid-shaped soil, and also forms a ready-mixed fluid-solidified soil pile wall structure for water curtain. The ready-mixed flow solidified soil pile constructed by this process has the characteristics of uniform mixing, high strength and high utilization rate of curing agent. It can also be used as a replacement material for foundation replacement.

2.Ready-mixed fluid-cured soil can be used as a construction cushion material or as a cured ground because it has working properties similar to concrete.

3.Ready-mixed liquid solidified soil has a certain strength and fluidity, can be used as a base material for municipal roads or construction roads, the ready-mixed liquid solidified soil has self-tightness, no need to use large machinery for rolling treatment during construction, saving construction costs.

4.The backfilling of the fertilizer tank after the completion of deep foundation construction has always been the control focus and difficulty of construction, and the use of ready-mixed liquid solidified soil can solve this problem by using its fluidity and strength.

III Backfill features

Ready-mixed fluid-solidified soil for trench backfilling has the following advantages:

1.Ready-mixed liquid solidified soil has high strength in the early stage, short curing time and fast construction period

2.Ready-mixed fluid-cured soil has strong fluidity and self-tightness

3.Ready-mixed fluid-cured soil is impermeable

4.Ready-mixed liquid solidified soil has the characteristics of economy and environmental protection

IV,Solidified soil construction

1.Construction preparation

1.1 Before construction, the construction plan should be determined and the construction organization design should be prepared.

1.2 According to the construction organization design, the construction equipment should be organized to enter the site, and the installation, commissioning and calibration work should be done.

1.3 According to the raw material use plan, organize the entry and inspection of raw materials.

① Soil selection: clay, silty clay, sand silt, etc. are preferred, the organic matter content is not more than 5%, and the particle size is not more than 50mm. Untreated contaminated soil shall not be used as raw materials for solidified soil.

② Curing agent selection: Soil curing agent is divided into class B curing agent (used alone) and class A curing agent (used with cement), according to the construction design requirements, determine the type and amount of curing agent.

③ Water: Non-polluted water source.

1.4 Remove stagnant water and organic debris from trenches and floors before filling.

1.5 Mix ratio design

The mix ratio of solidified soil should be determined by trial matching, but experienced areas can develop empirical mix ratios for different strengths based on local soil properties.

3.Mix

4.Pouring

5.Maintenance

6.Quality control measures and quality standards