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A modified soil that can be used to repair and strengthen existing soil walls

A modified soil wall technology, which is applied in the field of modified soil, can solve problems such as durability, high water resistance and acid resistance, structural safety and overall aesthetics, structural wall cracks, etc., to improve the compressive bearing capacity, Maintain the integrity and consistency of appearance and prolong the service life

Inactive Publication Date: 2019-05-10
SOUTHWEST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] There are a large number of adobe architectural cultural heritages in the Sichuan-Chongqing region, such as along the Hongyan historical revolutionary cultural site. These aboriginal architectural cultural heritages carry a lot of precious historical information and have high protection value, but diseases are common and some structural walls There are relatively obvious cracks in the body, accompanied by erosion and spalling damage, which has a great impact on the safety and overall appearance of the structure itself.
However, most of the restoration materials that have been studied at this stage are mainly for the earthen sites in the long-term dry environment in Northwest China. The materials are mainly resistant to wind erosion and salt. , water resistance, and acid resistance are high, and these protective materials are not suitable for use in this area

Method used

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  • A modified soil that can be used to repair and strengthen existing soil walls
  • A modified soil that can be used to repair and strengthen existing soil walls
  • A modified soil that can be used to repair and strengthen existing soil walls

Examples

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Effect test

Embodiment 1

[0020] Mix cement, ginger stone, epoxy resin, and cohesive soil according to the different ratios in Table 2 to obtain modified soils with different ratios of raw materials. Among them, the cement is fly ash Portland cement with a strength grade of 32.5 , material ginger stone particle size ≤ 3mm, all inorganic admixtures; epoxy resin is organic admixture, epoxy resin contains curing agent, the mass ratio of epoxy resin to curing agent is 4:1, epoxy resin is E- 51. The curing agent is T-31; see Table 1 for the water content of the cohesive soil. And each modified soil was made into 150mm×150mm×150mm cube adobe, and after curing, the shrinkage rate, color observation, water resistance, ultraviolet resistance, salt corrosion resistance, mechanical properties, and erosion resistance tests were tested.

[0021] 1. Shrinkage test

[0022] It is known that the shrinkage period of adobe is one month, so after 28 days, 18 groups of specimens from A1-3 to F1-3 were tested for three-di...

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Abstract

The invention relates to modified soil for repairing and reinforcing an existing soil wall and belongs to the technical field of building materials. The modified soil comprises, by weight, 5% of cement, 10% of loess-doll, 0-10% of epoxy resin, and 75-100% of cohesive soil. The modified soil has good water resistance, scour resistance, salt spray tolerance, adhesion and weatherability; by using the modified soil to repair a soil wall in Sichuan and Chongqing regions, the defect that existing soil for repairing cracking and holes in a soil wall has high shrinkage is overcome, it is also possible to ensure that the reinforced wall is consistent with an original soil wall in color, the appearance integrity and uniformity of an original building are well maintained, zero color change or peeling occurs under the action of natural external forces, the color has no significant change upon continuous exposure to ultraviolet, 'repairing the old like it was' is achieved, and the wall repaired has sufficient strength and good mechanical properties after being soaked and scoured in water and corroded by Na2SO4.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a modified soil which can be used for repairing and strengthening existing soil walls. Background technique [0002] There are a large number of adobe architectural cultural heritages in the Sichuan-Chongqing region, such as along the Hongyan historical revolutionary cultural site. These aboriginal architectural cultural heritages carry a lot of precious historical information and have high protection value, but diseases are common and some structural walls There are relatively obvious cracks in the body, accompanied by erosion and spalling damage, which has a great impact on the safety and overall appearance of the structure itself. However, most of the restoration materials that have been studied at this stage are mainly aimed at the earthen sites in the long-term dry environment in Northwest China. The materials are mainly resistant to wind erosion and s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/72C04B24/281C04B14/104C04B14/26C04B14/28C04B14/10
Inventor 杨兴据鲍安红王森佩唐诗宇
Owner SOUTHWEST UNIV
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