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Chopped fiber reinforced rendzinas ground treatment method

A short fiber and treatment method technology, applied in the field of foundation treatment, can solve the problems of not very prominent fiber reinforcement, small strength improvement, poor water stability of fiber soil, etc., achieve simple and feasible construction technology, reduce soil sand Effects of environmental pollution and low expansion and shrinkage

Inactive Publication Date: 2008-12-03
NANJING UNIV
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Problems solved by technology

Although the fiber soil has many advantages, it still has some disadvantages: (1) The reinforcing effect of the fiber is not very prominent, and the strength of the soil after reinforcement is not greatly improved, which is far less than that of lime or cement stabilized soil; (2) ) The water stability of fiber soil is poor, and it will disintegrate after soaking in water for a period of time

Method used

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  • Chopped fiber reinforced rendzinas ground treatment method
  • Chopped fiber reinforced rendzinas ground treatment method

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Embodiment Construction

[0025] (1) Fiber selection

[0026] Although there are many types of fibers, only fibers that meet the following four requirements are suitable for this method:

[0027] (1) In terms of chemical properties, the fibers must be non-toxic and harmless and have sufficient acid and alkali resistance; (2) In terms of physical properties, the fibers must have high deformability (ultimate elongation is usually greater than 15%) and good dispersion (no agglomeration, no bundles); (3) In terms of mechanical properties, the fiber must have high tensile strength, bond strength and elastic modulus; (4) In terms of commercialization, the fiber The production scale should be large and the product batches should be stable, with high cost performance. Because the acid and alkali resistance of glass fiber is not enough, the asbestos fiber is harmful, the dispersion of steel fiber is poor, and the price of carbon fiber is relatively expensive, so polymer fiber can be selected in this method: ch...

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Abstract

The present invention relates to a short fibre reinforced lime soil ground base treatment method. It is characterized by that it makes the short fibre and lime be mixed in the engineering soil so as to improve the engineering property of soil, and can be used for making ground base treatment. The fibre content is 0.05-0.5% of dried soil weight and the lime content is 1-10% of dried soil weight, the fibre length is 2mm-30mm. Said soil in which the short fibre and lime are mixed is undergone the processes of stirring, stacking and rolling so as to form the invented short fibre reinforced lime soil ground base.

Description

1. Technical field [0001] The invention relates to a ground treatment method, in particular to a short fiber reinforced lime soil foundation treatment method. 2. Background technology [0002] At present, the ground treatment methods can be roughly divided into two categories, namely, stabilization methods and reinforcement methods. Common stabilization methods mainly include lime improvement, cement improvement, fly ash improvement, and polymer reagent improvement. General reinforcement methods include geotextiles, geomembranes, geogrids, and continuous fiber reinforced soil methods. [0003] As an inexpensive and highly effective stabilizer, lime plays an important role in soil improvement. The addition of lime can greatly improve the compression resistance, shear resistance, water stability and frost resistance of engineering soil, and reduce its expansion and contraction, plasticity index and maximum dry density. Although lime effectively improves many engineering pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/12
Inventor 施斌蔡奕唐朝生王宝军高玮刘瑾陈峰军刘春李海涛黄河
Owner NANJING UNIV
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