Method for repairing cracks and damages of houses with raw soil structure

Abstract

The application provides a method for repairing cracks and damages of raw-soil-structure houses, which comprises the following steps: mixing polypropylene fibers into clay, stirring uniformly, then adding clean water and soaking for 6 hours to obtain a viscous and flowable slurry; cleaning a raw-soil wall (3), blowing floating dust in the cracks clean, wetting the wall at the crack part (4), fixing wood mold plates (2) on both sides of the wall at the crack part (4) to reserve V-shaped grouting grooves (1), pouring the slurry into the cracks (4) through the V-shaped grouting grooves (1) until the cracks are fully filled, removing the fixed plates after 3 days, evenly applying the viscous slurry on the surface of the wall at the crack part (4) to repair uneven parts of the wall surface, and performing two-layer plastering after the wall is dried. The repaired wall has high anti-shrinkage performance and durability and is not prone to cracking. The method can not only restore the stress performance of the repaired wall to the original state, but also maintain the original appearance and features of the wall.

Description

Technical Field

[0001] This invention relates to the field of building wall repair methods; and more particularly to a method for repairing cracks and damage in earthen structure houses. Background Technology

[0002] Currently, there are still a large number of earthen houses in rural areas, especially in remote mountainous areas. Due to the characteristics of their materials and the limited level of construction technology, earthen houses are prone to cracks and damage of varying degrees during use. The wall surface at the base of the wall is prone to weathering, powdering and peeling. Traditional repair methods are not very effective in improving the wall's resistance to shrinkage, durability and restoring the original mechanical properties of the wall. Summary of the Invention

[0003] The purpose of this invention is to provide a method for repairing cracks and damage in earthen structure houses.

[0004] This invention is achieved through the following technical solution:

[0005] This invention relates to a method for repairing cracks and damage in rammed earth structures, comprising the following steps:

[0006] Step 1: Select high-quality clay (free of impurities, humus, etc.).

[0007] Step 2: Remove soil clods, large stones, and other coarse particles from the soil by drying, grinding, and sieving, and set aside for later use;

[0008] Step 3: Take an appropriate amount of clay, add a small amount of polypropylene fiber to the clay, mix thoroughly and evenly, add an appropriate amount of water to soak for 6 hours, and then mix into a viscous, fluid slurry.

[0009] Step 4: Clean up the loose and fallen soil in the cracked part 4 of the rammed earth wall 3, and reserve a V-shaped grouting groove 1 at the top of the cracked part 4, and blow the loose soil in the crack with a blower.

[0010] Step 5: Spray an appropriate amount of water onto the wall at crack 4 using a sprayer until the wall surface is completely wet.

[0011] Step 6: Fix the wooden template 2 to both sides of the wall at the crack 4 using the template support 5. On one side of the wooden template 2, a V-shaped notch is carved at the V-shaped bevel of the wall crack, which is aligned with the V-shaped grouting groove 1 of the wall crack. The wooden template 2 on the other side does not need to be carved with a V-shaped notch.

[0012] Step 7: The mud obtained in step 3 is injected into the crack in part 4 in batches through the V-shaped grouting groove 1 until the crack is fully filled with mud.

[0013] Step 8: Remove the formwork support component 5 and the wooden formwork 2 after 3 days;

[0014] Step 9: Repeat steps 1 and 2 to obtain clay; take an appropriate amount of clay, add an appropriate amount of polypropylene fiber to the clay, mix thoroughly and evenly, add an appropriate amount of water to soak for 6 hours, and then mix into a viscous slurry; apply the viscous slurry evenly to the wall surface of crack 4, and after the wall dries, apply two coats of plaster with an interval of 6 to 12 hours.

[0015] Preferably, in step 1, the high-quality clay is clay free of impurities and humus.

[0016] Preferably, in step 2, the drying time is 2 to 4 days, and the particle size after sieving is ≤0.5mm.

[0017] Preferably, in step 3, the mixing ratio of clay, water and polypropylene fiber is 1:(0.70~0.8):0.0010.

[0018] Preferably, in step 4, the depth of the V-shaped grouting groove 1 is 3 to 5 cm.

[0019] Preferably, in step 6, the template support 5 has an alternating longitudinal and transverse structure.

[0020] Preferably, in step 9, the mixing ratio of clay, water, and polypropylene fiber is 1:(0.6-0.70):0.0015.

[0021] Preferably, in step 9, the viscous mud is used to repair the weathered and eroded parts of the wall.

[0022] Preferably, the repair specifically includes:

[0023] Step A: Remove loose and easily detached soil from the wall 6 and blow away the loose soil with a blower;

[0024] Step B: Sprinkle water to moisten the wall surface, apply a 1-2cm thick slurry, and after it dries, apply two coats with an interval of 6-12 hours.

[0025] The present invention has the following advantages:

[0026] (1) The method involved in this invention has the advantages of being easy to operate and having low cost;

[0027] (2) The wall repaired by the method involved in this invention has high resistance to shrinkage and durability, and is not prone to cracking;

[0028] (3) The method involved in this invention can not only restore the original stress performance of the repaired wall, but also maintain the original appearance and other characteristics of the wall. Attached Figure Description

[0029] Figure 1 This is a demonstration diagram of the repair method involved in this invention;

[0030] Figure 2 This is an illustration showing the effect of using viscous mud slurry to repair weathered and eroded sections of the wall. Detailed Implementation

[0031] The present invention will now be described in detail with reference to specific embodiments. It should be noted that the following embodiments are merely further illustrations of the present invention, but the scope of protection of the present invention is not limited to the following embodiments.

[0032] Example 1

[0033] This embodiment relates to a method for repairing cracks and damage in rammed earth structures. See Figure 1 As shown, it includes the following steps:

[0034] Step 1: Select high-quality clay (free of impurities, humus, etc.).

[0035] Step 2: Remove soil clods, large stones, and other coarse particles from the soil by drying, grinding, and sieving, and set aside for later use;

[0036] Step 3: Take an appropriate amount of clay, add a small amount of polypropylene fiber to the clay, mix thoroughly and evenly, add an appropriate amount of water to soak for 6 hours, and then mix into a viscous, fluid slurry.

[0037] Step 4: Clean up the loose and fallen soil in the cracked part 4 of the rammed earth wall 3, and reserve a V-shaped grouting groove 1 at the top of the cracked part 4, and blow the loose soil in the crack with a blower.

[0038] Step 5: Spray an appropriate amount of water onto the wall at crack 4 using a sprayer until the wall surface is completely wet.

[0039] Step 6: Fix the wooden template 2 to both sides of the wall at the crack 4 using the template support 5. On one side of the wooden template 2, a V-shaped notch is carved at the V-shaped bevel of the wall crack, which is aligned with the V-shaped grouting groove 1 of the wall crack. The wooden template 2 on the other side does not need to be carved with a V-shaped notch.

[0040] Step 7: The mud obtained in step 3 is injected into the crack in part 4 in batches through the V-shaped grouting groove 1 until the crack is fully filled with mud.

[0041] Step 8: Remove the formwork support component 5 and the wooden formwork 2 after 3 days;

[0042] Step 9: Repeat steps 1 and 2 to obtain clay; take an appropriate amount of clay, add an appropriate amount of polypropylene fiber to the clay, mix thoroughly and evenly, add an appropriate amount of water to soak for 6 hours, stir thoroughly, and mix into a viscous slurry; apply the viscous slurry evenly to the wall surface of crack 4, and after the wall dries, apply two coats of plaster with an interval of 6 to 12 hours.

[0043] In step 2, the drying time is 2 to 4 days, and the particle size after sieving is ≤0.5mm.

[0044] In step 3, the mixing ratio of clay, water and polypropylene fiber is 1:(0.70~0.8):0.0010.

[0045] In step 4, the depth of the V-shaped grouting groove 1 is 3-5 cm.

[0046] In step 6, the template support 5 has an alternating longitudinal and transverse structure.

[0047] In step 9, the mixing ratio of clay, water and polypropylene fiber is 1:(0.6~0.70):0.0015.

[0048] Example 2

[0049] This embodiment relates to a method for repairing weathered and eroded sections of walls using a viscous mud slurry. See Figure 2 As shown, it includes the following steps:

[0050] Pre-preparing a viscous slurry: Repeat steps 1 and 2 in Example 1 to obtain clay; take an appropriate amount of clay, add an appropriate amount of polypropylene fiber to the clay, mix thoroughly and evenly, add an appropriate amount of water to soak for 6 hours, stir thoroughly, and mix into a viscous slurry.

[0051] Step A: Remove loose and easily detached soil from the wall 6 and blow away the loose soil with a blower;

[0052] Step B: Sprinkle water to moisten the wall surface, apply a viscous slurry (1-2cm thick), and after it dries, apply two coats with an interval of 6-12 hours.

[0053] The wall repaired by the method of this invention has high resistance to shrinkage and durability, and is not prone to cracking. This method can not only restore the original load-bearing performance of the repaired wall, but also maintain the original appearance of the wall.

[0054] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A method for repairing cracks and damage in earthen structure houses, characterized in that, Includes the following steps: Step 1, select high-quality clay; Step 2: Remove soil clods, large stones, and other coarse particles from the soil by drying, grinding, and sieving, and set aside for later use; Step 3: Take an appropriate amount of sieved clay, add a small amount of polypropylene fiber to the clay, mix thoroughly and evenly, add an appropriate amount of water to soak for 6 hours, and then mix into a viscous, fluid slurry. Step 4: Clean up the loose and fallen soil in the cracked part (4) of the rammed earth wall (3), and reserve a V-shaped grouting groove (1) above the cracked part (4), and blow the loose soil in the crack with a blower. Step 5: Spray an appropriate amount of water onto the wall at the crack (4) with a sprayer until the wall surface is completely wet. Step 6: Fix the wooden template (2) to both sides of the wall at the crack (4) using the template support (5). On one side, the wooden template (2) is carved with a V-shaped notch at the V-shaped bevel of the wall crack and is aligned with the V-shaped grouting groove (1) of the wall crack. Step 7: The mud obtained in step 3 is injected into the crack (4) in batches through the V-shaped grouting groove (1) until the crack is fully filled with mud. Step 8: Remove the formwork support (5) and wooden formwork (2) after 3 days. Step 9, repeat steps 1 and 2 to obtain clay; take an appropriate amount of clay, add an appropriate amount of polypropylene fiber into the clay, mix thoroughly and evenly, add an appropriate amount of water to soak for 6 hours, and then mix into a viscous slurry; apply the viscous slurry evenly to the wall surface of the crack (4), and after the wall dries, apply two layers of plaster with an interval of 6 to 12 hours.

2. The method for repairing cracks and damage in earthen structure houses as described in claim 1, characterized in that, In step 1, the high-quality clay is clay free of impurities and humus.

3. The method for repairing cracks and damage in earthen structure houses as described in claim 1, characterized in that, In step 2, the drying time is 2 to 4 days, and the particle size after sieving is ≤0.5mm.

4. The method for repairing cracks in earthen structure houses as described in claim 1, characterized in that, In step 3, the mixing ratio of clay, water and polypropylene fiber is 1:(0.70~0.8):0.0010.

5. The method for repairing cracks and damage in rammed earth structures as described in claim 1, characterized in that, In step 4, the depth of the V-shaped grouting groove (1) is 3-5 cm.

6. The method for repairing cracks and damage in earthen structure houses as described in claim 1, characterized in that, In step 6, the template support (5) has an alternating longitudinal and transverse structure.

7. The method for repairing cracks and damage in earthen structure houses as described in claim 1, characterized in that, In step 9, the mixing ratio of clay, water and polypropylene fiber is 1:(0.6~0.70):0.0015.

8. The method for repairing cracks and damage in earthen structure houses as described in claim 1, characterized in that, In step 9, the viscous mud is used to repair the weathered and eroded parts of the wall.

9. The method for repairing cracks and damage in rammed earth structures as described in claim 8, characterized in that, The repair specifically refers to: Step A: Remove loose and easily detachable soil from the wall surface (6), and blow away the loose soil with a blower; Step B: Sprinkle water to moisten the wall surface, apply a 1-2cm thick slurry, and after it dries, apply two coats with an interval of 6-12 hours.

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