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Using method for soil curing agent

A soil stabilizer and soil technology, applied in soil protection, construction, infrastructure engineering, etc., can solve problems such as low water resistance, high requirements for liquid stabilizer soil properties, and poor strength.

Inactive Publication Date: 2009-09-02
张京杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the liquid curing agent has too high requirements on soil properties, and has many defects such as low water solubility and poor strength, it is difficult to be widely used.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The inspection before using Lubang EN-1 soil stabilizer in the parking lot of an automobile hub station.

[0048] 1. Lime detection:

[0049] Lime origin: Weiyuan, secondary lime;

[0050] Effective calcium and magnesium oxide: 70.1, design requirements: 60~65

[0051] Hydrochloric acid consumption: 23.9ml

[0052] The equivalent concentration of hydrochloric acid: 1.0482

[0053] 2. Soil testing: soil brown shale at the station

[0054] Sampling: 2000g

[0055] ① The mass of soil less than 2mm was screened to reach 1711g, and the soil less than 2mm accounted for 85.6% of the total soil mass.

[0056] ②The mass of the soil less than 1mm was screened reached 1616g, and the soil less than 1mm accounted for 80.8% of the total soil mass.

[0057] Liquid limit V L =34.70; plastic limit V P =21.5; plasticity index IP=13.20

[0058] 3. Gravel and gravel detection: aggregate crushing value is 24.94%.

[0059] 4. Heavy-duty impact test results of pavement base material...

Embodiment 2

[0094] Raw materials: based on the total weight of solidified soil

[0095] Lubang EN-1 Soil Stabilizer 0.018%

[0096] Yunnan Red Soil 94.92%

[0097] 2mm quicklime 5%

[0098] The parameters of the Yunnan red soil are listed in Table 1.

[0099] Table 1

[0100] soil name

[0101] Use a mixer commonly used in road construction to fully mix Lubang EN-1 soil stabilizer and 2mm quicklime, then pour it into the Yunnan red soil for mixing, and then use the vibration machine commonly used in road construction Compactor for compaction. The unconfined compressive strength was measured and the results are shown in Table 2 below.

[0102] Table 2

[0103] the soil

[0104] As can be seen from the results in Table 2, the method of the present invention is mixed with Lubang EN-1 soil curing agent for stabilization, and the water immersion compressive strength is obviously improved, which can meet the requirements of the subbase course of high-grade pavement and...

Embodiment 3

[0105] Example 3 (clay)

[0106] my country's Shanxi and Shanxi Loess Plateaus are mostly sandy clay. In the case of sandy clay soils, the total amount of lime and cement is 5% based on the total weight of the solidified soil.

[0107] The solidified soil compaction is 300 cubic meters, and the soil specific gravity is 1.65, then use 2% cement and 3% lime, then:

[0108] Cement: 300 cubic meters × 1.65 × 2% = 9.9 tons

[0109] Lime: 300 cubic meters × 1.65 × 3% = 14.85 tons

[0110] That is, it needs to add 9.9 tons of cement, 14.85 tons of lime, and the total weight of mixed auxiliary materials is 24.75 tons. The dosage of Lubang EN-1 soil curing agent is 0.018% based on the total weight of the solidified soil. Lime, cement and soil are evenly mixed, and the curing agent is added to complete the soil curing process to meet the requirements of the subbase of the high-grade pavement and the base of the secondary pavement.

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PUM

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Abstract

The invention relates to a method for using a soil solidifying agent, which comprises the following steps: measuring 0-8% lime and / or cement and / or fly ash, 0.001-0.1% Lubang EN based on the total weight of the solidified soil -1 The soil stabilizer is mixed with the remaining soil, and then compacted with rolling equipment to achieve the required foundation. The method can effectively enhance the strength of the subgrade and improve the subgrade structure; significantly reduce the road settlement; double the resilience modulus of the subgrade; prolong the service life of the subgrade and the road, reduce the porosity of the subgrade structure, prevent the road from grouting, and improve the use of curing agents. Water resistance of the product.

Description

【Technical field】 [0001] The invention relates to the field of foundation technology, and more specifically, the invention relates to a method for using a soil curing agent. 【Background technique】 [0002] Soil is the main building material of the foundation, especially the main building material of the road foundation. In order to make the foundation have sufficient strength and stability, so that the soil can meet the requirements of the building, it is necessary to process the soil. For this reason, various soil stabilizers and their methods of use have been extensively studied. The soil curing agent refers to a modifier that can directly cement the surface of soil particles at normal temperature or can react with clay mineral components of soil particles (wherein mainly montmorillonite, illite and kaolinite) to form cementing substances, or More concisely, the soil curing agent is a material that can improve and enhance the technical performance of the soil, and the me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/12
Inventor 张京杰
Owner 张京杰
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