Composite material for seismic reinforcement of ancient building and construction method of composite material

Abstract

The invention belongs to the technical field of anti-seismic reinforcement of ancient buildings, and provides a composite material for anti-seismic reinforcement of ancient buildings and a construction method of the composite material. The composite material comprises the following components in parts by mass: 20-30 parts of Portland cement, 8-12 parts of grass root ash, 5-8 parts of open sand, 2-3 parts of active micro powder, 1-2 parts of heavy calcium powder, 3-8 parts of steel fibers, 3-5 parts of resin rubber powder, 3-5 parts of bone glue, 2-4 parts of starch, 2-4 parts of a water repellent and 10-30 parts of water. According to the composite material for seismic reinforcement of the ancient building, multiple beneficial effects are achieved; particularly, the metakaolin is introduced as active micro powder, so that the overall strength and stability of the composite material are remarkably enhanced, and meanwhile, the metakaolin and other components have a synergistic effect, so that the adhesion, the reinforcing property and the durability of the material are improved; the composite material not only meets the special requirements of anti-seismic reinforcement of ancient buildings, but also improves the appearance and use performance of the ancient buildings.

Description

Technical Field

[0001] The invention belongs to the technical field of earthquake-resistant reinforcement of ancient buildings, and specifically relates to a composite material for earthquake-resistant reinforcement of ancient buildings and a construction method thereof. Background Art

[0002] As carriers of national culture, ancient buildings have extremely high historical value and cultural significance. However, due to their age, long-term erosion by wind and rain, and human trampling or touching, ancient buildings are prone to structural problems such as cracks and breakage. At the same time, natural disasters such as earthquakes also pose a serious threat to the safety of ancient buildings. Traditional methods of seismic reinforcement of ancient buildings have problems such as complex construction, high cost, and great damage to the original structure. With the advancement of science and technology, modern reinforcement materials and technologies have gradually been introduced into the field of seismic reinforcement of ancient buildings.

[0003] New materials such as carbon fiber composites have shown great potential in the seismic reinforcement of ancient buildings due to their light weight, high strength and high toughness. However, the existing composite materials for seismic reinforcement of ancient buildings still have deficiencies in adhesion, reinforcement and durability, and it is difficult to meet the special needs of seismic reinforcement of ancient buildings.

[0004] To this end, those skilled in the art have proposed a composite material for earthquake-resistant reinforcement of ancient buildings and a construction method thereof to solve the problems raised by the background technology. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a composite material for seismic reinforcement of ancient buildings and a construction method thereof, so as to solve the problems that the composite materials for seismic reinforcement of ancient buildings in the prior art still have deficiencies in adhesion, reinforcement, durability, etc., and are difficult to meet the special needs of seismic reinforcement of ancient buildings.

[0006] A composite material for earthquake-resistant reinforcement of ancient buildings, comprising the following components in parts by mass: 20 to 30 parts of silicate cement, 8 to 12 parts of grass root ash, 5 to 8 parts of bright sand, 2 to 3 parts of active micro powder, 1 to 2 parts of heavy calcium powder, 3 to 8 parts of steel fiber, 3 to 5 parts of resin glue powder, 3 to 5 parts of bone glue, 2 to 4 parts of starch, 2 to 4 parts of water repellent and 10 to 30 parts of water.

[0007] Preferably, the grass root ash is prepared by mixing dry straw, sawdust and lime paste in a mass ratio of 1:0.5:1.

[0008] Preferably, the active micropowder is at least one of metakaolin, slag powder and zeolite powder.

[0009] Preferably, the composite material further comprises:

[0010] 2 ～5 parts by weight of a building pigment, wherein the building pigment is a propylene color pigment powder having a particle size of 100 to 200 nm;

[0011] 2 ～ 5 parts by mass of expanded perlite.

[0012] A construction method for earthquake-resistant reinforcement of ancient buildings, using the above-mentioned composite material for earthquake-resistant reinforcement of ancient buildings, comprising:

[0013] S1: preparing the above-mentioned composite material raw materials according to the mass ratio;

[0014] S2: Mix the silicate cement, grass ash, sand, active micro powder, heavy calcium powder, steel fiber, starch and water repellent evenly and set aside;

[0015] S3: adding water to the bone glue and heating it to boiling, and stirring it evenly into a paste; then adding resin glue powder to the paste bone glue, melting the resin glue powder under the residual heat of the bone glue, and stirring to obtain a mixed glue;

[0016] S4: gradually adding the materials mixed in step S2 to the mixed viscose, stirring evenly, to obtain a composite material for earthquake-resistant reinforcement of ancient buildings;

[0017] S5: Clean the location to be repaired in the ancient building, embed the obtained composite material into the location to be repaired, tamp it repeatedly until it is evenly dense, smooth the surface, and polish it after air drying to complete the repair.

[0018] Preferably, before step S1, all raw materials of the composite material are screened to remove impurities and large particles to ensure the purity and particle size uniformity of the raw materials; this can improve the overall quality and performance of the composite material.

[0019] Preferably, when preparing the grass ash, a more sophisticated mixing process, such as ball milling or high-speed stirring, is used to enhance the uniformity of the reaction between the dry rice straw, sawdust and lime paste, thereby improving the strength and stability of the grass ash.

[0020] Preferably, in step S2, silicate cement, bright sand, heavy calcium powder and steel fiber are preliminarily mixed and preheated to increase the activity of these materials so that they can be more easily combined with other components in the subsequent mixing process.

[0021] Preferably, in step S3, a proper amount of a modifier (such as a coupling agent, a plasticizer, etc.) is added to the resin powder to improve the bonding strength and weather resistance of the resin powder.

[0022] Preferably, in step S4, a dynamic mixing device (including a high-speed disperser and a planetary mixer) is used to mix the materials, and a shear force is applied at the same time to ensure that all components can be evenly dispersed in the mixed viscose, thereby improving the uniformity and stability of the composite material.

[0023] The composite material for earthquake-resistant reinforcement of ancient buildings provided by the present invention comprises a plurality of components in a carefully proportioned manner; wherein silicate cement is used as the main bonding material to ensure a firm structure; grass root ash enhances the adhesion of the material, making it closely bonded to the surface of the ancient building; bright sand improves the hardness and wear resistance of the material; active micro powder and heavy calcium powder optimize the microstructure of the material and enhance its mechanical properties; the addition of steel fiber significantly improves the tensile strength and toughness of the material, thereby enhancing the earthquake resistance; resin glue powder and bone glue provide good bonding force and durability; starch and hydrophobic agent are used to adjust the consistency and waterproof performance of the material respectively; water is used as a blending agent to fully mix the components; architectural pigments are used to adjust the color of the material to maintain consistency with the appearance of the ancient building; and expanded perlite plays a role in reducing the weight of the material and enhancing the sound insulation and heat insulation effects; the synergistic effect of these components makes the composite material have significant advantages in the field of earthquake-resistant reinforcement of ancient buildings.

[0024] Preferably, the step S5 is specifically described as follows:

[0025] S5.1. Detailed treatment of the repaired area: Before step S5, the repaired area of ​​the ancient building is treated more carefully, such as removing loose debris, grinding uneven surfaces, filling cracks, etc., to ensure that the composite material can be better embedded and bonded to the repaired area.

[0026] S5.2. Layered embedding and compaction of composite materials: In step S5, the composite materials are applied layer by layer on the location to be repaired by adopting the layered embedding method, and special tools are used to compact each layer after application to ensure the density and uniformity of the composite materials.

[0027] S5.3. Special curing and maintenance: After the composite material is embedded and rammed evenly, a special curing process (including heat curing, ultraviolet curing, etc.) is used to accelerate the curing process of the composite material; at the same time, appropriate maintenance treatment (including water spraying for moisturizing, sun shading, etc.) is carried out after curing to ensure that the performance of the composite material is fully utilized.

[0028] Preferably, the method further comprises:

[0029] S6. After the construction is completed, the composite material performance test is carried out on the repaired position, including tests on compressive strength, flexural strength, weather resistance, etc. to ensure the stability and durability of the repaired position;

[0030] S7. Evaluate the overall construction effect based on the test results and the actual situation during the construction process; if problems or deficiencies are found, make timely remedial and adjustments to ensure the best construction quality and effect.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention adopts a well-designed composite material formula, including silicate cement, grass ash, sand, active micro powder, heavy calcium powder, steel fiber, resin glue powder, bone glue, starch, water repellent and other components. These components work synergistically to make the composite material have excellent adhesion, reinforcement and durability; in particular, the introduction of grass ash enhances the bonding force and crack resistance of the material, while the steel fiber significantly improves the tensile strength and toughness of the material;

[0033] 2. The construction method proposed by the present invention is simple and efficient, including the steps of raw material preparation, uniform mixing, preparation of mixed adhesive, preparation of composite materials, fine processing of the location to be repaired, layered embedding and compaction of composite materials, and special curing and maintenance; this method not only reduces the construction difficulty and cost, but also reduces the damage to the original structure of the ancient building; in particular, the layered embedding and compaction method ensures the density and uniformity of the composite materials, thereby improving the reinforcement effect;

[0034] 3. The present invention also adds architectural pigments and expanded perlite and other components to make the composite material have good decorative and thermal insulation properties; this can not only meet the needs of earthquake-resistant reinforcement of ancient buildings, but also improve the appearance and performance of ancient buildings;

[0035] 4. After the construction is completed, the present invention also conducts composite material performance testing, including tests on compressive strength, flexural strength, weather resistance, etc.; this ensures the stability and durability of the repair position and improves the overall seismic performance of the ancient building; at the same time, based on the test results and the actual situation during the construction process, the overall construction effect is evaluated and adjusted to ensure that the construction quality and effect reach the best state. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The present invention is a flow chart of the construction method for earthquake-resistant reinforcement of ancient buildings. DETAILED DESCRIPTION

[0037] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] Embodiment 1: The present invention provides a composite material for seismic reinforcement of ancient buildings, comprising the following components by mass: 20 parts of silicate cement, 8 parts of grass root ash, 5 parts of bright sand, 2 parts of active micro powder, 1 part of heavy calcium powder, 3 parts of steel fiber, 3 parts of resin glue powder, 3 parts of bone glue, 2 parts of starch, 2 parts of water repellent, 10 parts of water, 2 parts of building pigment and 2 parts of expanded perlite;

[0039] Specifically, the architectural pigment is a propylene colored pigment powder with a particle size of 100 nm;

[0040] Specifically, the grass root ash is prepared by mixing dry rice straw, sawdust and lime paste in a mass ratio of 1:0.5:1;

[0041] Specifically, the active micro powder is metakaolin;

[0042] From the above, it can be seen that the present invention achieves multiple beneficial effects by providing a composite material for seismic reinforcement of ancient buildings; in particular, the introduction of kaolin as active micropowder significantly enhances the overall strength and stability of the composite material, and at the same time synergizes with other components to improve the adhesion, reinforcement and durability of the material; this composite material not only meets the special needs of seismic reinforcement of ancient buildings, but also improves the appearance and performance of ancient buildings, ensures the stability and durability of the repair position, and improves the overall seismic performance of ancient buildings.

[0043] A construction method for seismic reinforcement of ancient buildings using the above-mentioned raw materials, such as Figure 1 As shown, including:

[0044] S1: preparing the above-mentioned composite material raw materials according to the mass ratio;

[0045] S2: Mix the silicate cement, grass ash, sand, active micro powder, heavy calcium powder, steel fiber, starch and water repellent evenly and set aside;

[0046] S3: adding water to the bone glue and heating it to boiling, and stirring it evenly into a paste; then adding resin glue powder to the paste bone glue, melting the resin glue powder under the residual heat of the bone glue, and stirring to obtain a mixed glue;

[0047] S4: gradually adding the materials mixed in step S2 to the mixed viscose, stirring evenly, to obtain a composite material for earthquake-resistant reinforcement of ancient buildings;

[0048] S5: Clean the location to be repaired of the ancient building, embed the obtained composite material into the location to be repaired, repeatedly tamp and roll until it is evenly dense, smooth the surface, and polish it after air drying to complete the repair;

[0049] S6. After the construction is completed, the composite material performance test is carried out on the repaired position, including tests on compressive strength, flexural strength, weather resistance, etc. to ensure the stability and durability of the repaired position;

[0050] S7. Evaluate the overall construction effect based on the test results and the actual situation during the construction process; if problems or deficiencies are found, make timely remedial and adjustments to ensure the best construction quality and effect.

[0051] From the above, it can be seen that through a series of precise and efficient steps, such as preparing composite material raw materials according to the precise proportion of mass, mixing the key components evenly for later use, preparing mixed adhesive, evenly stirring the mixed material and adhesive to form a composite material, carefully processing the position to be repaired and embedding and compacting the composite material in layers, and conducting comprehensive performance testing and effect evaluation after the construction is completed, the construction quality and efficiency of seismic reinforcement of ancient buildings have been greatly improved; this method not only reduces the construction difficulty and cost, but also significantly reduces the damage to the original structure of the ancient building, ensuring the stability and durability of the repair position; through performance testing and construction effect evaluation, it is possible to timely discover and adjust deficiencies in the construction to ensure that the final construction quality and effect reach the best state, thereby effectively improving the overall seismic performance of the ancient building.

[0052] Specifically, the step S5 is described as follows:

[0053] S5.1. Detailed treatment of the repaired area: Before step S5, the repaired area of ​​the ancient building is treated more carefully, such as removing loose debris, polishing uneven surfaces, filling cracks, etc., to ensure that the composite material can be better embedded and bonded to the repaired area;

[0054] S5.2, layered embedding and compaction of composite materials: In step S5, the composite materials are applied layer by layer to the location to be repaired by adopting the layered embedding method, and compacted with special tools after each layer is applied to ensure the density and uniformity of the composite materials;

[0055] S5.3. Special curing and maintenance: After the composite material is embedded and rammed evenly, a special curing process (including heat curing, ultraviolet curing, etc.) is used to accelerate the curing process of the composite material; at the same time, appropriate maintenance treatment (including water spraying for moisturizing, sun shading, etc.) is carried out after curing to ensure that the performance of the composite material is fully utilized.

[0056] From the above, it can be seen that the locations to be repaired in the ancient buildings have been finely processed, and through meticulous steps such as layered embedding and compaction of composite materials and special curing and maintenance, it is ensured that the composite materials can be tightly and evenly bonded to the locations to be repaired, greatly improving the stability and durability of the repaired locations; this refined construction method not only enhances the adhesion and reinforcement effect of the composite materials, but also effectively avoids defects and deficiencies in the construction process, ensuring the quality and reliability of the seismic reinforcement work of ancient buildings, and providing solid technical support for the protection and inheritance of ancient buildings.

[0057] Embodiment 2: The present invention provides a composite material for seismic reinforcement of ancient buildings, comprising the following components in parts by mass: 25 parts of silicate cement, 10 parts of grass root ash, 6 parts of bright sand, 2 parts of active micropowder, 2 parts of heavy calcium powder, 5 parts of steel fiber, 4 parts of resin glue powder, 4 parts of bone glue, 3 parts of starch, 3 parts of water repellent, 20 parts of water, 4 parts of building pigment and 4 parts of expanded perlite;

[0058] Specifically, the architectural pigment is a propylene colored pigment powder with a particle size of 150 nm;

[0059] Specifically, the grass root ash is prepared by mixing dry rice straw, sawdust and lime paste in a mass ratio of 1:0.5:1;

[0060] Specifically, the active micro powder is slag powder;

[0061] A construction method for seismic reinforcement of ancient buildings using the above-mentioned raw materials has the same steps as those of the first embodiment.

[0062] Embodiment 3: The present invention provides a composite material for seismic reinforcement of ancient buildings, comprising the following components in parts by mass: 30 parts of silicate cement, 12 parts of grass root ash, 8 parts of bright sand, 3 parts of active micro powder, 2 parts of heavy calcium powder, 8 parts of steel fiber, 5 parts of resin glue powder, 5 parts of bone glue, 4 parts of starch, 4 parts of water repellent, 30 parts of water, 5 parts by mass of building pigment and 5 parts by mass of expanded perlite;

[0063] Specifically, the architectural pigment is a propylene colored pigment powder with a particle size of 200 nm;

[0064] Specifically, the grass root ash is prepared by mixing dry rice straw, sawdust and lime paste in a mass ratio of 1:0.5:1;

[0065] Specifically, the active micropowder is zeolite powder;

[0066] A construction method for seismic reinforcement of ancient buildings using the above-mentioned raw materials has the same steps as those of the first embodiment.

[0067] Comparative Example: Provides currently available ancient building seismic reinforcement composite materials and construction methods:

[0068] The ancient building seismic reinforcement composite material is composed of the following main components:

[0069] Portland cement: As the basic cementitious material, it provides the main strength of the composite material;

[0070] Carbon fiber: With its light weight, high strength and high toughness, it enhances the overall mechanical properties of composite materials;

[0071] Quartz sand: as a filling material, it increases the density and wear resistance of the composite material;

[0072] Epoxy resin: As a binder, it improves the bonding strength of the components of the composite material;

[0073] Architectural pigments: used to adjust the color of composite materials to coordinate with the appearance of ancient buildings;

[0074] A construction method for earthquake-resistant reinforcement of ancient buildings obtained from the above materials comprises:

[0075] Step 1: Prepare composite materials such as Portland cement, carbon fiber, quartz sand, epoxy resin and building pigments in a certain proportion;

[0076] Step 2: Mix the silicate cement, carbon fiber and quartz sand evenly to form a base material; then add epoxy resin to the base material and stir thoroughly to ensure that all components are evenly distributed;

[0077] Step 3: Add an appropriate amount of architectural pigment to the mixture and adjust the color to match the appearance of the ancient building;

[0078] Step 4: Clean and treat the ancient building to be repaired, remove loose and damaged parts, and ensure the surface is smooth;

[0079] Step 5: Apply the mixed composite material evenly to the location to be repaired in the ancient building, ensuring that the coating thickness is uniform and there is no omission.

[0080] The effects of the composite materials for earthquake-resistant reinforcement of ancient buildings and the construction methods thereof in Examples 1 to 3 are compared with the existing composite materials for earthquake-resistant reinforcement of ancient buildings and the construction methods thereof (comparative examples), and the following table is obtained:

[0081]

[0082]

[0083]

[0084] As can be seen from the above table, the above table compares in detail the effects of a composite material for seismic reinforcement of ancient buildings and its construction method provided by Examples 1 to 3 with the existing composite material for seismic reinforcement of ancient buildings and its construction method. A comprehensive evaluation was conducted from multiple aspects such as composite material components, adhesion, reinforcement, durability, construction difficulty, cost, degree of damage to the original structure, stability and durability of the repair position, and overall seismic performance. The results show that the methods of Examples 1 to 3 perform well in multiple key indicators, especially in adhesion, reinforcement, durability and protection of the original structure, and have significant advantages, and have low construction difficulty and low cost, which effectively improves the overall seismic performance of the ancient building. Although the existing methods have a certain improvement in seismic performance, they are relatively weak in adhesion, durability and protection of the original structure, and have high construction difficulty and cost.

[0085] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A composite material for seismic reinforcement of ancient buildings, characterized by: The composite material comprises the following components in parts by weight: 20 to 30 parts of silicate cement, 8 to 12 parts of grass root ash, 5 to 8 parts of bright sand, 2 to 3 parts of active micro powder, 1 to 2 parts of heavy calcium powder, 3 to 8 parts of steel fiber, 3 to 5 parts of resin glue powder, 3 to 5 parts of bone glue, 2 to 4 parts of starch, 2 to 4 parts of water repellent and 10 to 30 parts of water.

2. A composite material for seismic reinforcement of ancient buildings as claimed in claim 1, characterized in that: The grass root ash is prepared by mixing dry rice straw, sawdust and lime paste in a mass ratio of 1:0.5:

1.

3. A composite material for seismic reinforcement of ancient buildings as claimed in claim 1, characterized in that: The active micro powder is at least one of metakaolin, slag powder and zeolite powder.

4. A composite material for seismic reinforcement of ancient buildings as claimed in claim 1, characterized in that: The composite material further comprises: 2 ～ 5 parts by weight of a building pigment, wherein the building pigment is a propylene color pigment powder having a particle size of 100 to 200 nm; 2 ～ 5 parts by mass of expanded perlite.

5. A construction method for seismic reinforcement of ancient buildings, characterized in that: A composite material for seismic reinforcement of ancient buildings according to any one of claims 1 to 4, comprising: S1: preparing the above-mentioned composite material raw materials according to the mass ratio; S2: Mix the silicate cement, grass ash, sand, active micro powder, heavy calcium powder, steel fiber, starch and water repellent evenly and set aside; S3: adding water to the bone glue and heating it to boiling, and stirring it evenly into a paste; then adding resin glue powder to the paste bone glue, melting the resin glue powder under the residual heat of the bone glue, and stirring to obtain a mixed glue; S4: gradually adding the materials mixed in step S2 to the mixed viscose, stirring evenly, to obtain a composite material for earthquake-resistant reinforcement of ancient buildings; S5: Clean the location to be repaired in the ancient building, embed the obtained composite material into the location to be repaired, tamp it repeatedly until it is evenly dense, smooth the surface, and polish it after air drying to complete the repair.

6. A construction method for seismic reinforcement of ancient buildings as claimed in claim 1, characterized in that: The specific description of step S5 is as follows: S5.

1. Detailed treatment of the location to be repaired: Before step S5, the location to be repaired of the ancient building is treated more carefully; S5.2, layered embedding and compaction of composite materials: In step S5, the composite materials are applied layer by layer to the location to be repaired by adopting the layered embedding method, and compacted by using special tools after each layer is applied; S5.

3. Special curing and maintenance: After the composite material is embedded and rammed evenly, a special curing process is used to accelerate the curing process of the composite material; at the same time, appropriate maintenance treatment is carried out after curing.

7. A construction method for seismic reinforcement of ancient buildings as claimed in claim 1, characterized in that: The method further includes: S6. After the construction is completed, the composite material performance test is carried out on the repaired position to ensure the stability and durability of the repaired position; S7. Evaluate the overall construction effect based on the test results and the actual situation during the construction process; if problems or deficiencies are found, make timely remedial measures and adjustments.

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