Silt solidifying material and silt solidifying method

A technology for curing materials and curing methods, which is applied in the field of road engineering, and can solve the problems of large dry shrinkage of cement soil, poor stabilization effect of silt soil, and reduction of compression resistance, impermeability, frost resistance and erosion resistance of the cured body.

Active Publication Date: 2021-03-09
SHANDONG JINGBO PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common inorganic binders include cement, fly ash and lime materials. For soil reinforcement projects using lime and fly ash, according to the research of many researchers, lime and fly ash are suitable for stabilizing cohesive soils with a plasticity index between 12 and 20. , the stabilization effect on silt soil is not good
Cement can stabilize almost all types of soil, but cement soil also has problems such as large drying shrinkage and easy cracking, and the exposed cement soil is prone to uneven volume due to changes in cement hydration reaction, ambient temperature, and humidity. Cracks are generated due to the change of the solidified body, which leads to the reduction of the compression resistance, impermeability, frost resistance and erosion resistance of the solidified body, and a large amount of cement is used in the cement soil, which increases the proje

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The raw materials used include:

[0063] Silt (the alluvial soil of the Yellow River Delta in Binzhou) 75 parts by weight, 20 parts by weight of oil sand and 5 parts by weight of cement; the cement strength P.O32.5; the oil content of the oil sand is 25wt%, and the colloid content is 15wt% .

[0064] According to the T0804-1994 standard in JTG E50-2009 "Test Regulations for Inorganic Binder Stable Materials in Highway Engineering", the compaction test was carried out on the silt, and the optimum moisture content of the silt was determined to be 8.3%.

[0065] Curing methods include:

[0066] 1) drying the silt, then mixing it with the cement, then adding oil sand, and kneading while adding until evenly mixed to obtain a mixture;

[0067] 2) adding water to the mixture, and determining the amount of water added according to the moisture content of the silt being 8.3%;

[0068] 3) According to the compaction degree of 95%, it is compacted and shaped, and cured in a con...

Embodiment 2

[0071] The raw materials used include:

[0072] Silt (the alluvial soil of the Yellow River Delta in Binzhou) 70 parts by weight, 27 parts by weight of oil sand and 3 parts by weight of cement; the cement strength P.O32.5; the oil content of the oil sand is 16wt%, and the colloid content is 16wt% .

[0073] According to the T0804-1994 standard in JTG E50-2009 "Test Regulations for Inorganic Binder Stable Materials in Highway Engineering", the compaction test was carried out on the silt, and the optimum moisture content of the silt was determined to be 8.3%.

[0074] Curing methods include:

[0075] 1) drying the silt, then mixing it with the cement, then adding oil sand, and kneading while adding until evenly mixed to obtain a mixture;

[0076] 2) adding water to the mixture, and determining the amount of water added according to the moisture content of the silt being 8.3%;

[0077] 3) According to the compaction degree of 95%, it is compacted and shaped, and cured in a con...

Embodiment 3

[0080] The raw materials used include:

[0081] Silt (the impact soil of the Yellow River Delta in Binzhou) 66 parts by weight, 32 parts by weight of oil sand and 2 parts by weight of cement; the cement strength P.O42.5; the oil content of the oil sand is 20wt%, and the colloid content is 18wt% .

[0082] According to the T0804-1994 standard in JTG E50-2009 "Test Regulations for Inorganic Binder Stable Materials in Highway Engineering", the compaction test was carried out on the silt, and the optimum moisture content of the silt was determined to be 8.3%.

[0083] Curing methods include:

[0084] 1) drying the silt, then mixing it with the cement, then adding oil sand, and kneading while adding until evenly mixed to obtain a mixture;

[0085] 2) adding water to the mixture, and determining the amount of water added according to the moisture content of the silt being 8.3%;

[0086] 3) According to the compaction degree of 95%, it is compacted and shaped, and cured in a const...

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Abstract

The invention relates to the technical field of road engineering, in particular to a silt solidification material and a silt solidification method. The silt curing material is prepared from the following raw materials in parts by weight: 60-80 parts of silt, 10-20 parts of a curing agent, 10-20 parts of a curing agent, 20-40 parts of oil sand, and 2-5 parts of cement. The silt curing material provided by the invention does not need to adopt any one of foamed asphalt, emulsified asphalt, a soil curing agent and latex, the raw materials are simple and easy to obtain, the cost is relatively low,the environment is protected, and the obtained silt curing material is relatively excellent in mechanical property.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to a silt solidification material and a silt solidification method. Background technique [0002] A large amount of silt is distributed in vast areas of our country, especially in Dongying, Heze, Liaocheng, Dezhou, Binzhou, Zibo, Jining, Jinan and other areas in Shandong Province, where a large area of ​​Yellow River alluvial silt is distributed, covering an area of ​​about 20% of the total area of ​​Shandong Province. 1 / 3. However, due to the special origin of silt, it has several obvious bad engineering characteristics: First, the silt particles are uniform and poorly graded, so it is difficult to achieve the ideal compaction state, that is, there are no more fine particles between the pores. Filled with clay, similar to the suspended state of building blocks; secondly, silt cannot effectively act with various stabilizers like clay, nor can it act as a skeleton in the so...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00732C04B2201/50C04B18/049C04B14/361Y02W30/91
Inventor 金萍祁聪刘建伟栾波
Owner SHANDONG JINGBO PETROCHEM
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