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Composite treatment method for soft ground

A composite treatment and soft soil foundation technology, applied in chemical instruments and methods, fertilizer mixtures, soil conditioning materials, etc., can solve problems affecting the stability of soft soil foundation structures and insufficient bearing capacity, so as to inhibit crack expansion and improve bearing capacity Capacity, the effect of improving the bearing capacity of soil

Active Publication Date: 2022-02-11
乐昌市恒源水电建筑工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the traditional cement grouting uses conventional cement, which often has the problem of insufficient bearing capacity, which affects the structural stability of the soft soil foundation after reinforcement.

Method used

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  • Composite treatment method for soft ground
  • Composite treatment method for soft ground

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A composite treatment method for soft ground:

[0053] S1. Add 500mL of xylene into the reaction vessel, soak 0.172kg of polypropylene fiber, 0.051kg of polyurethane fiber and 0.017kg of basalt fiber in xylene at room temperature for 1h, take it out, and dry it in an oven at 50°C for 2h , to obtain the concrete fiber mixture;

[0054] S2. Put 1.6kg of white corundum micropowder and the concrete fiber mixture obtained in step S1 into the mixer for the first stirring, the stirring time is 10min, then add 5kg of fly ash and 35kg of machine-made fine sand for the second stirring, the stirring time 5min, then add 30kg cement and stir for the third time, the stirring time is 6min, then add 28kg water and stir for the fourth time, the stirring time is 2min, to obtain the solidified slurry;

[0055] S3. Drill the foundation with a drilling rig carrying a grouting head, and then use the drill pipe of the drilling rig as a grouting pipe to inject the solidified grout obtained in...

Embodiment 2～ Embodiment 8

[0057] The difference between Example 2 to Example 8 and Example 1 is that the distribution ratio of each component is different, as shown in Table 1.

[0058] Table 1

[0059]

Embodiment 9

[0061] The difference between this embodiment and embodiment 4 is that in step S2, after adding cement for stirring and before adding water for stirring, step S2A is also included: adding 0.02kg sodium dodecylbenzenesulfonate to water.

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Abstract

The invention discloses a soft soil foundation composite treatment method, comprising the following steps: S1. soaking concrete fibers in a surface treatment agent for 1-2 hours, taking out and drying; S2. mixing concrete fibers and white corundum micropowder for 10-20 minutes, adding Fly ash and machine-made fine sand are mixed for 5~10min, then add cement and mix for 3~6min, and then add water and mix for 2~3min to obtain the solidified slurry; S3. Drill the foundation, and then inject the solidified slurry to complete the construction operation; The method has the advantages of high bearing capacity and stable structure of the treated foundation.

Description

technical field [0001] The invention relates to the field of foundation reinforcement, more specifically, it relates to a soft soil foundation composite treatment method. Background technique [0002] Soft soil foundation refers to the weak soil layer with low strength and high compression. During the road construction process, the soft soil foundation will affect the construction and construction quality of the road, such as causing a large amount of road settlement and cracking of the road. Therefore, it is necessary to strengthen the soft soil foundation. [0003] The related method of strengthening the soft soil foundation is generally to add cement to the soft soil foundation by grouting. After the cement is injected into the soil, it will chemically react with the soil to absorb and squeeze out part of the water and air in the soil to form a high bearing capacity. Composite foundation to strengthen the soft soil foundation. [0004] However, the traditional cement gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/02C04B20/02C04B38/10C09K17/10C09K17/40C04B111/70C09K103/00
CPCC04B28/02C04B20/023C04B38/10C09K17/10C09K17/40C04B2111/70C09K2103/00C04B18/08C04B14/06C04B14/303C04B20/0048C04B16/0633C04B16/0683C04B14/46
Inventor 罗峰磷
Owner 乐昌市恒源水电建筑工程有限公司