阅读说明：本技术 一种桥梁修复专用灌浆料 (Grouting material special for bridge restoration ) 是由 缪建华 于 2020-05-09 设计创作，主要内容包括：本发明公开了一种桥梁修复专用灌浆料,其涉及桥梁修复领域,旨在解决现有的桥梁裂缝修复方法不能对桥梁内部裂缝进行有效修复的问题,灌浆料原料按重量份包括以下组分：硅酸盐水泥55-89份,膨胀水泥6-10份,膨润土6-12份,无水乙醇9-15份,异丙醇10-18份,纳米硅溶胶12-20份,硅酸镁铝9-15份,填料18-26份,渗透剂5-9份,流平剂4-7份,抗老化剂5-9份,水100-150份。本发明利用灌浆料的自渗透性能,使得灌浆料充分渗透进入桥梁内部的裂缝,在桥梁内部裂缝进行充分的填充,提高桥梁结构整体的结合力,大大提高了桥梁裂缝整体的修复质量；而且本发明的灌浆料固化后的强度优异,可以对桥梁裸露的钢筋进行封堵。(The invention discloses a grouting material special for bridge repair, which relates to the field of bridge repair and aims to solve the problem that the existing bridge crack repair method cannot effectively repair the cracks in a bridge, and the grouting material comprises the following raw materials in parts by weight: 55-89 parts of Portland cement, 6-10 parts of expansion cement, 6-12 parts of bentonite, 9-15 parts of absolute ethyl alcohol, 10-18 parts of isopropanol, 12-20 parts of nano silica sol, 9-15 parts of magnesium aluminum silicate, 18-26 parts of filler, 5-9 parts of penetrating agent, 4-7 parts of flatting agent, 5-9 parts of anti-aging agent and 150 parts of 100-doped water. According to the invention, the self-permeability of the grouting material is utilized, so that the grouting material can fully permeate into cracks in the bridge and fully fill the cracks in the bridge, the overall bonding force of the bridge structure is improved, and the overall repair quality of the bridge cracks is greatly improved; the grouting material disclosed by the invention is excellent in strength after being cured, and can be used for plugging the exposed reinforcing steel bars of the bridge.)

1. The grouting material special for bridge repair is characterized by comprising the following raw materials in parts by weight: 55-89 parts of Portland cement, 6-10 parts of expansion cement, 6-12 parts of bentonite, 9-15 parts of absolute ethyl alcohol, 10-18 parts of isopropanol, 12-20 parts of nano silica sol, 9-15 parts of magnesium aluminum silicate, 18-26 parts of filler, 5-9 parts of penetrating agent, 4-7 parts of flatting agent, 5-9 parts of anti-aging agent and 150 parts of 100-doped water.

2. The grouting material special for bridge repair according to claim 1, which is characterized by comprising the following components in parts by weight: 68-72 parts of silicate water, 7-8 parts of expansive cement, 6-8 parts of bentonite, 12-14 parts of absolute ethyl alcohol, 12-15 parts of isopropanol, 16-18 parts of nano silica sol, 10-13 parts of magnesium aluminum silicate, 22-25 parts of filler, 6-9 parts of penetrating agent, 5-7 parts of flatting agent, 7-8 parts of anti-aging agent and 140 parts of water 120.

3. The grouting material special for bridge repair according to claim 2, characterized by comprising the following components in parts by weight: 69 parts of Portland cement, 7 parts of expansive cement, 8 parts of bentonite, 13 parts of absolute ethyl alcohol, 14 parts of isopropanol, 17 parts of nano silica sol, 12 parts of magnesium aluminum silicate, 23 parts of filler, 8 parts of penetrating agent, 6 parts of flatting agent, 8 parts of anti-aging agent and 130 parts of water.

4. The grouting material special for bridge repair according to claim 3, characterized by comprising the following components in parts by weight: 70 parts of silicate water, 8 parts of expansive cement, 7 parts of bentonite, 12 parts of absolute ethyl alcohol, 14 parts of isopropanol, 18 parts of nano silica sol, 13 parts of magnesium aluminum silicate, 24 parts of filler, 9 parts of penetrating agent, 5 parts of flatting agent, 8 parts of anti-aging agent and 120 parts of water.

5. The grouting material special for bridge repair according to claim 1, characterized in that: the filler comprises the following components in parts by weight: 20-36 parts of glass fiber powder, 15-26 parts of lignin fiber powder and 10-19 parts of sand.

6. The grouting material special for bridge repair according to claim 1, characterized in that: the penetrant comprises the following components in parts by weight: 20-36 parts of Nippon SHO-BOND crack repair glue and 18-26 parts of alkali-resistant penetrant OEP-7018.

7. The grouting material special for bridge repair according to claim 1, characterized in that: the leveling agent comprises the following components in parts by weight: 12-24 parts of a high-efficiency water reducing agent and 15-26 parts of polyether modified silicone oil.

8. The grouting material special for bridge repair according to claim 1, characterized in that: the anti-aging agent comprises the following components in parts by weight: 10-21 parts of nano zinc oxide, 8-12 parts of polydimethylsiloxane and 12-23 parts of polyurethane powder.

9. The grouting material special for bridge repair according to claim 5, characterized in that: the particle sizes of the sand and stone are respectively (80-140) meshes and (180-220) meshes, and the dosage ratio of the sand and stone with two sizes is 1: (2-4).

Technical Field

The invention relates to the field of bridge repair, in particular to a grouting material special for bridge repair.

Background

Reinforced concrete is the most widely used building material in the world at present, and is widely applied to modern engineering construction of ports, dams, roads, bridges, municipal works and the like, however, along with rapid development of economy and continuous progress of science and technology, the consumption of concrete is increased, so that the concrete structure is also more and more complicated, and along with the increase of the damage problem of the concrete structure, the problem is also more and more increased.

As a common reinforced concrete structure, a bridge has the problems of cracking and the like after a period of time due to the fact that the bridge is subjected to various loads for a long time.

However, the above method has a problem that the mortar is filled in the V-shaped groove, and only the surface of the bridge crack is repaired, however, the crack located inside the bridge structure is not repaired yet, and the crack inside the bridge structure continues to develop in the later stage, which still causes the damage of the bridge structure.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the grouting material special for bridge repair, which is characterized in that the self-permeability of the grouting material is utilized, so that the grouting material fully permeates into cracks of a bridge and fully fills the cracks in the bridge, the overall binding force of a bridge structure is improved, and the overall repair quality of the bridge cracks is greatly improved.

In order to achieve the purpose, the invention provides the following technical scheme:

the grouting material special for bridge repair comprises the following raw materials in parts by weight: 55-89 parts of Portland cement, 6-10 parts of expansion cement, 6-12 parts of bentonite, 9-15 parts of absolute ethyl alcohol, 10-18 parts of isopropanol, 12-20 parts of nano silica sol, 9-15 parts of magnesium aluminum silicate, 18-26 parts of filler, 5-9 parts of penetrating agent, 4-7 parts of flatting agent, 5-9 parts of anti-aging agent and 150 parts of 100-doped water.

By adopting the technical scheme, the Portland cement is mainly used as the base material of the grouting material, and the expansive cement and the bentonite provide the micro-expansion characteristic for the grouting material by utilizing the self expansion performance, so that the drying shrinkage of the grouting material is reduced; meanwhile, after the bentonite loses water molecules, the volume is reduced to a certain extent, so that anhydrous ethanol and isopropanol are added to the grouting material, and the anhydrous ethanol and the isopropanol can replace the water molecules in the bentonite structure, so that the volume reduction of the bentonite after losing the water molecules can be reduced, and the drying shrinkage of the grouting material is further reduced.

The nano silica sol is added, has good hydrophilicity and dispersibility, can well improve the texture uniformity of the grouting material after being dissolved in absolute ethyl alcohol, and can be polymerized to form high-polymer silica gel along with the absorption of the absolute ethyl alcohol into bentonite, the absolute ethyl alcohol gradually leaves the nano silica sol, and the high-polymer silica gel molecules gradually increase along with the leaving of the absolute ethyl alcohol, and finally, a latticed high-polymer cross-linked substance is formed, so that the latticed structure has strong structural strength, and the strength after crack repair is well improved; meanwhile, the magnesium aluminum silicate can be compatible with the nano silica sol, so that the viscosity of the nano silica sol is adjusted, and the bonding strength of the grouting material and the crack is improved.

The filler, the penetrating agent, the leveling agent and the anti-aging agent are used as functional additives, the filler can further improve the strength of the grouting material after hardening, and the penetrating agent improves the permeability of the grouting material, so that the grouting material can penetrate into the deep part of a crack; the leveling agent can adjust the fluidity of the grouting material, so that the grouting material can well cover the surface of the bridge crack after the grouting material is injected into the crack to fill the crack; the anti-aging agent effectively prolongs the service life of the grouting material after curing and improves the repairing effect of the crack. Therefore, the self-permeation repair method can fully perform self-permeation repair on the bridge cracks and perform certain micro-expansion in the cracks, so that the grouting material fully fills the bridge cracks, the overall bonding force of the bridge structure is improved, and the overall repair quality of the bridge cracks is greatly improved; and after the grouting material is cured, the grouting material has excellent strength, and can also be used for plugging exposed reinforcing steel bars and the like of bridges.

The invention is further set up in that the grouting material comprises the following raw materials in parts by weight: 68-72 parts of silicate water, 7-8 parts of expansive cement, 6-8 parts of bentonite, 12-14 parts of absolute ethyl alcohol, 12-15 parts of isopropanol, 16-18 parts of nano silica sol, 10-13 parts of magnesium aluminum silicate, 22-25 parts of filler, 6-9 parts of penetrating agent, 5-7 parts of flatting agent, 7-8 parts of anti-aging agent and 140 parts of water 120.

By adopting the technical scheme, the content ranges of all components in the grouting material are further refined, and the comprehensive performance of the grouting material can be further improved.

The invention is further set up in that the grouting material comprises the following raw materials in parts by weight: 69 parts of Portland cement, 7 parts of expansive cement, 8 parts of bentonite, 13 parts of absolute ethyl alcohol, 14 parts of isopropanol, 17 parts of nano silica sol, 12 parts of magnesium aluminum silicate, 23 parts of filler, 8 parts of penetrating agent, 6 parts of flatting agent, 8 parts of anti-aging agent and 130 parts of water.

By adopting the technical scheme, the content of each component of the grouting material is further determined, so that each performance of the grouting material is optimal, meanwhile, the fluidity of the grouting material reaches a specified range, the grouting material can be uniformly injected into a bridge crack in a horizontal state, and then the crack is well filled and repaired.

The invention is further set up in that the grouting material comprises the following raw materials in parts by weight: 70 parts of silicate water, 8 parts of expansive cement, 7 parts of bentonite, 12 parts of absolute ethyl alcohol, 14 parts of isopropanol, 18 parts of nano silica sol, 13 parts of magnesium aluminum silicate, 24 parts of filler, 9 parts of penetrating agent, 5 parts of flatting agent, 8 parts of anti-aging agent and 120 parts of water.

By adopting the technical scheme, the content of each component of the grouting material is further determined, so that each performance of the grouting material is optimal, meanwhile, the fluidity of the grouting material reaches a specified range, the grouting material can be uniformly injected into the bridge cracks in an inclined state, and then the cracks are well filled and repaired.

The invention is further provided that the filler comprises the following components in parts by weight: 20-36 parts of glass fiber powder, 15-26 parts of lignin fiber powder and 10-19 parts of sand.

By adopting the technical scheme, the glass fiber powder is used as a filling material and added into the grouting material, so that after the grouting material is hardened, the hardness and the compressive strength of the grouting material can be well enhanced, and the shrinkage rate of the grouting material is reduced; the lignin fiber powder is used as an organic fiber and is filled in the grouting material, so that the toughness of the hardened grouting material can be improved, and the crack repairing effect can be improved; the sandstone is used for effectively improving the strength and the weathering resistance of the hardened grouting material, so that the use effect of the repaired crack is improved.

The invention is further provided that the penetrant comprises the following components in parts by weight: 20-36 parts of Nippon SHO-BOND crack repair glue and 18-26 parts of alkali-resistant penetrant OEP-7018.

By adopting the technical scheme, the Japanese Schottky SHO-BOND crack repair glue is used as a high-molecular resin base material and has ultralow viscosity and extremely strong permeability, so that the grouting material can keep a permeable state for a long time, and the Japanese Schottky SHO-BOND crack repair glue has excellent bonding performance and can further improve the bonding strength between the grouting material and the side wall of the crack; the alkali-resistant penetrating agent OEP-70 is used as a penetrating agent with excellent viscosity, so that the permeability of the grouting material can be improved, and the bonding strength between the grouting material and the side wall of the crack can be improved; therefore, the permeation capability of the grouting material can be well improved under the combined action of the Japanese Sho-BOND crack repairing glue and the alkali-resistant penetrant OEP-70.

The invention further provides that the leveling agent comprises the following components in parts by weight: 12-24 parts of a high-efficiency water reducing agent and 15-26 parts of polyether modified silicone oil.

By adopting the technical scheme, after the high-efficiency water reducing agent is added into the grouting material system, the cement particles can be effectively dispersed, and the fluidity of the grouting material can be well improved while the unit water consumption is reduced; the polyether modified silicone oil is a polymer formed by graft copolymerization of polyether and polydimethylsiloxane, is an organosilicon nonionic surfactant, and has good lubricity and low surface tension, so that the fluidity of the grouting material can be well improved.

The invention is further provided that the anti-aging agent comprises the following components in parts by weight: 10-21 parts of nano zinc oxide, 8-12 parts of polydimethylsiloxane and 12-23 parts of polyurethane powder.

By adopting the technical scheme, the nano zinc oxide is used as an ultraviolet shielding agent, so that the corrosion of ultraviolet rays to the grouting material can be reduced, and the strength of the grouting material after being hardened can be improved by adding the nano zinc oxide; the polydimethylsiloxane utilizes the hydrophobicity of the polydimethylsiloxane, so that the bonding strength of the grouting material and cracks can be further improved while the water corrosion of the grouting material is reduced; the polyurethane powder is added into the grouting material, so that the weather resistance of the grouting material can be well improved, and the strength of the grouting material after hardening can be improved.

The invention is further provided that the sand grain diameter is respectively (80-140) mesh and (180-220) mesh, the sand dosage ratio of two sizes is 1: (2-4).

Through taking above-mentioned technical scheme, the grit not only can improve the intensity of grout material in order not to mix into the grout material with different particle size, makes the grit can be in the same place with each composition better in the grout material in addition, improves the closely knit degree after the grout material hardens.

In conclusion, the invention has the following beneficial effects:

1. the invention adds the expansive cement, the bentonite, the absolute ethyl alcohol and the isoamylol, utilizes the expansion performance of the expansive cement and the bentonite to provide the micro-expansion characteristic for the grouting material, and reduces the drying shrinkage of the grouting material; meanwhile, the added absolute ethyl alcohol and isopropanol can replace water molecules in a bentonite structure, so that the volume reduction of the bentonite after losing the water molecules can be reduced, the drying shrinkage of the grouting material is further reduced, the grouting material is enabled to fully fill the bridge cracks, the overall binding force of the bridge structure is improved, and the overall repair quality of the bridge cracks is greatly improved;

2. the nano silica sol is dissolved in absolute ethyl alcohol, the absolute ethyl alcohol gradually leaves the nano silica sol along with the absorption of the absolute ethyl alcohol into the bentonite, the nano silica sol can be polymerized to form high polymer silica gel, the high polymer silica gel molecules gradually increase along with the leaving of the absolute ethyl alcohol, and finally, a latticed high polymer cross-linked substance is formed.

Detailed Description

The present invention will be described in further detail with reference to examples.