CN112592116B - High-strength anti-crack epoxy mortar and preparation method thereof - Google Patents
High-strength anti-crack epoxy mortar and preparation method thereof Download PDFInfo
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- CN112592116B CN112592116B CN202011496922.8A CN202011496922A CN112592116B CN 112592116 B CN112592116 B CN 112592116B CN 202011496922 A CN202011496922 A CN 202011496922A CN 112592116 B CN112592116 B CN 112592116B
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- epoxy mortar
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to the technical field of building materials, and particularly relates to high-strength anti-crack epoxy mortar and a preparation method thereof. The invention aims to solve the technical problem of aiming at the municipal road subgradeAnd the quality problems caused by pavement cracking and uneven settlement, and provides the epoxy mortar with high strength and crack resistance and the preparation method thereof. The high-strength anti-crack epoxy mortar comprises the following raw materials in parts by weight: 280-320 kg/m of epoxy resin 3 Cement of 310-370 kg/m 3 Medium sand 950-1150 kg/m 3 305-335 kg/m of fine sand 3 30 to 50kg/m of plasticizer 3 40-60 kg/m of accelerator 3 310 to 350kg/m of water 3 52-58 kg/m of polyethylene 3 48 to 54kg/m of glass fiber 3 . The epoxy mortar has good bending strength and compressive strength and good crack resistance.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to high-strength anti-crack epoxy mortar and a preparation method thereof.
Background
At present, in the municipal construction field, cracks and uneven settlement of roadbeds and pavements are always a high quality problem, the influence on roads is more prominent, the service function of the roads is influenced, and the loss of personnel and vehicle property is easily caused.
There are also treatment measures for these problems at present, but the construction process is longer, influences road use. Patent document CN102875057B discloses a high-strength fast-setting epoxy mortar and a preparation method thereof, wherein the high-strength fast-setting epoxy mortar comprises 100 parts of epoxy resin, 5-50 parts of toughening diluent, 10-60 parts of curing agent, 1-10 parts of accelerator, 1-10 parts of silane coupling agent and 100-1000 parts of quartz sand. The material is mainly used in the fields of rapid repair, leaking stoppage, reinforcement, protection and the like of buildings, but the material has no good wear resistance, and the phenomenon of cracking easily occurs on roads due to long-term running of vehicles and repeated impact of heavy vehicles.
Patent document CN103359977A discloses an anti-abrasion epoxy mortar and a preparation method thereof, wherein the anti-abrasion epoxy mortar is composed of the following components in parts by weight: 80-100 parts of sand, 25-40 parts of powder and 18-26 parts of epoxy resin slurry; the epoxy resin slurry consists of the following components in parts by weight: 60-100 parts of epoxy resin, 10-20 parts of an activating agent, 60-120 parts of a carbonyl compound, 0-2 parts of a surfactant, 10-25 parts of a curing agent and 2-10 parts of an accelerating agent. The material is used as an anti-abrasion material in the field of hydraulic construction, and the phenomenon of cracking easily occurs because the repaired part can generate uneven pressure and vibration due to the dynamic load of vehicles on roads.
At present, a material capable of efficiently and quickly solving the problems of road cracks and uneven settlement and a preparation method are lacked in the field of municipal road construction, so that the research of high-strength anti-crack epoxy mortar is very necessary.
Disclosure of Invention
The invention aims to solve the technical problem of quality caused by cracking and uneven settlement of a municipal road subgrade and a road surface and provides high-strength and crack-resistant epoxy mortar and a preparation method thereof.
The invention provides high-strength anti-crack epoxy mortar for solving the technical problems. The epoxy mortar comprises the following raw materials in parts by weight: 280-320 kg/m of epoxy resin 3 Cement of 310-370 kg/m 3 Medium sand 950-1150 kg/m 3 305-335 kg/m of fine sand 3 30 to 50kg/m of plasticizer 3 40-60 kg/m of accelerator 3 310 to 350kg/m of water 3 52-58 kg/m of polyethylene 3 48 to 54kg/m of glass fiber 3 。
Further, the plasticizer is dibutyl ester.
Further, the accelerator is ethylenediamine.
Further, the polyethylene is high density polyethylene.
The invention also provides a preparation method of the high-strength anti-crack epoxy mortar, which comprises the following steps:
a. mixing, heating and stirring epoxy resin and a plasticizer, adding cement, stirring uniformly, adding medium sand and fine sand, stirring, adding polyethylene and glass fiber, and stirring to obtain a mixture;
b. and d, cooling the mixture obtained in the step a, adding an accelerant, and stirring to obtain the epoxy mortar.
Further, in the step a, the temperature of the mixing is controlled to be 45-55 ℃.
Further, in the step b, after the mixture is cooled to 20-28 ℃, an accelerator is added.
The invention also provides application of the high-strength anti-crack epoxy mortar as an anti-crack material in the field of municipal road construction.
The invention has the beneficial effects that:
the epoxy mortar has good performance, and experiments show that the initial setting time of the epoxy mortar is less than or equal to 2h, the bending strength after 24h is more than or equal to 50MPa, the compressive strength is more than or equal to 80MPa, and the positive tensile bonding strength with concrete is more than or equal to 3.0 MPa. The epoxy mortar has high cohesiveness with concrete, stronger crack resistance and more excellent compression resistance and tensile resistance. Compared with the common mortar, the mortar not only can effectively reduce the adverse factors of low early strength, but also has good combination with concrete, and can be matched with the common concrete for anti-cracking treatment. Compared with common mortar, the epoxy mortar prepared by the method has better ageing resistance and carbonization resistance, and has the advantages of obvious strength advantage and quick forming.
Detailed Description
The invention provides high-strength anti-crack epoxy mortar. The epoxy mortar comprises the following raw materials in parts by weight: 280-320 kg/m of epoxy resin 3 Cement of 310-370 kg/m 3 Medium sand 950-1150 kg/m 3 305-335 kg/m of fine sand 3 Dibutyl ester 30-50 kg/m 3 40 to 60kg/m of ethylenediamine 3 310 to 350kg/m of water 3 52-58 kg/m of high density polyethylene 3 48 to 54kg/m of glass fiber 3 。
In order to enable the epoxy mortar to have good strength and crack resistance, the inventor finds that the high-strength epoxy mortar prepared by the raw materials according to a certain proportion has good strength, the bending strength after 24 hours is more than or equal to 50MPa, the compressive strength is more than or equal to 80MPa, and the positive tensile bonding strength with concrete is more than or equal to 3.0 MPa.
In the epoxy mortar, the epoxy resin has good bonding strength and chemical resistance; adding cement to increase strength and resist corrosion of fresh water or salt-containing water; the fine sand and the medium sand are added to play a role of a skeleton, so that the using amount of cement is saved; to increase the plasticity, dibutyl ester is added; the ethylene diamine is added to ensure that the prepared epoxy mortar has good thermal stability; in order to ensure that the prepared epoxy mortar has good wear resistance, electrical insulation, corrosion resistance, toughness, cold resistance and chemical stability, high-density polyethylene and glass fiber are added.
The invention also provides a preparation method of the high-strength anti-crack epoxy mortar, which comprises the following steps:
a. mixing, heating and stirring the epoxy resin and the plasticizer, adding the cement, stirring uniformly, adding the medium sand and the fine sand, stirring, adding the polyethylene and the glass fiber, and stirring to obtain a mixture.
b. And d, cooling the mixture obtained in the step a, adding an accelerant, and stirring to obtain the epoxy mortar.
Further, in the step a, the temperature of the mixing is controlled to be 45-55 ℃.
Further, in the step b, after the mixture is cooled to 20-28 ℃, an accelerator is added.
In the preparation process of the epoxy mortar, attention needs to be paid to whether the epoxy mortar is stirred and fused at any time, so that the conditions of blocking, consolidation and the like are avoided. The prepared epoxy mortar needs to be used as soon as possible, and the prepared epoxy mortar needs to be used within 1 hour.
The invention also provides application of the high-strength anti-crack epoxy mortar as an anti-crack material in the field of municipal road construction.
The epoxy mortar can be used for reinforcing cracks and uneven settlement of roadbeds and pavements, and can also be used for large-area site construction; when the epoxy mortar is used for the roadbed and the pavement, the roadbed and the pavement can be treated in a mode of epoxy mortar injection or mortar cushion pouring.
The present invention will be further illustrated by the following specific examples.
Example 1
The epoxy mortar comprises the following raw materials in parts by weight: epoxy resin 280kg/m 3 425 cement 310kg/m 3 Medium sand 950kg/m 3 305kg/m of fine sand 3 Dibutyl ester 30kg/m 3 Ethylene diamine 40kg/m 3 52kg/m of high density polyethylene 3 48kg/m of glass fiber 3 310kg/m of water 3 。
The preparation method of the epoxy mortar of the embodiment comprises the following steps: a. mixing, heating and stirring epoxy resin and dibutyl ester, adding 425 cement, stirring uniformly, adding medium sand and fine sand, stirring, adding high-density polyethylene and glass fiber, and stirring at 45 ℃ to obtain a mixture; b. and d, cooling the mixture obtained in the step a to 20 ℃, and then adding ethylenediamine and stirring to obtain the epoxy mortar.
The bending strength of the epoxy mortar prepared in the embodiment after 24 hours is 52MPa, the compressive strength is 81MPa, and the positive tensile bonding strength with concrete is 3.0 MPa.
Example 2
The epoxy mortar comprises the following raw materials in parts by weight: epoxy resin 300kg/m 3 425 Cement 330kg/m 3 1050kg/m of medium sand 3 320kg/m of fine sand 3 Dibutyl ester 40kg/m 3 Ethylene diamine 50kg/m 3 High density polyethylene 55kg/m 3 51kg/m glass fiber 3 330kg/m of water 3 。
The preparation method of the epoxy mortar of the embodiment comprises the following steps: a. mixing, heating and stirring epoxy resin and dibutyl ester, adding 425 cement, uniformly stirring, adding medium sand and fine sand, stirring, adding high-density polyethylene and glass fiber, and stirring at the temperature of 50 ℃ to obtain a mixture; b. and d, cooling the mixture obtained in the step a to 24 ℃, adding ethylenediamine, and stirring to obtain the epoxy mortar.
The bending strength of the epoxy mortar prepared in the embodiment after 24 hours is 56MPa, the compressive strength is 87MPa, and the positive tensile bonding strength with concrete is 3.5 MPa.
Example 3
The epoxy mortar comprises the following raw materials in parts by weight: epoxy resin 320kg/m 3 425 cement 370kg/m 3 1150kg/m medium sand 3 335kg/m of fine sand 3 50kg/m of dibutyl ester 3 Ethylene diamine 60kg/m 3 58kg/m of high density polyethylene 3 54kg/m of glass fiber 3 350kg/m of water 3 。
The preparation method of the epoxy mortar of the embodiment comprises the following steps: a. mixing, heating and stirring epoxy resin and dibutyl ester, adding 425 cement, stirring uniformly, adding medium sand and fine sand, stirring, adding high-density polyethylene and glass fiber, and stirring at the temperature of 55 ℃ to obtain a mixture; b. and d, cooling the mixture obtained in the step a to 28 ℃, and then adding ethylenediamine and stirring to obtain the epoxy mortar.
The bending strength of the epoxy mortar prepared in the embodiment after 24 hours is 54MPa, the compressive strength is 85MPa, and the positive tensile bonding strength with concrete is 3.1 MPa.
Claims (1)
1. The high-strength anti-crack epoxy mortar is characterized in that: the anti-cracking material for the municipal road construction comprises the following raw materials in parts by weight: 280-320 kg/m of epoxy resin 3 Cement of 310-370 kg/m 3 Medium sand 950-1150 kg/m 3 305-335 kg/m of fine sand 3 Dibutyl ester 30-50 kg/m 3 40 to 60kg/m of ethylenediamine 3 310 to 350kg/m of water 3 52-58 kg/m of high density polyethylene 3 48 to 54kg/m of glass fiber 3 (ii) a The preparation method of the high-strength anti-crack epoxy mortar comprises the following steps:
a. mixing, heating and stirring epoxy resin and dibutyl ester, adding cement, stirring uniformly, adding medium sand and fine sand, stirring, adding high-density polyethylene and glass fiber, and stirring at 45-55 ℃ to obtain a mixture;
b. and d, cooling the mixture obtained in the step a to 20-28 ℃, adding ethylenediamine, and stirring to obtain the epoxy mortar.
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| CN202011496922.8A CN112592116B (en) | 2020-12-17 | 2020-12-17 | High-strength anti-crack epoxy mortar and preparation method thereof |
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| CN202011496922.8A CN112592116B (en) | 2020-12-17 | 2020-12-17 | High-strength anti-crack epoxy mortar and preparation method thereof |
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| CN112592116B true CN112592116B (en) | 2022-09-30 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4379870A (en) * | 1978-07-07 | 1983-04-12 | Mitsui Petrochemical Industries, Ltd. | Reinforcing material for hydraulic substances and method for the production thereof |
| CN111393069A (en) * | 2020-03-25 | 2020-07-10 | 深圳绿景环保再生资源有限公司 | Preparation method of epoxy mortar of modified powder and graded sand and epoxy mortar |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102875057B (en) * | 2012-08-29 | 2013-12-25 | 江苏博特新材料有限公司 | High-strength quick-curing epoxy mortar and preparation method thereof |
| CN103359977B (en) * | 2013-06-25 | 2016-03-16 | 中科院广州化学有限公司 | A kind of Abrasion-resistant epoxy mortar and preparation method thereof |
| CN105366994B (en) * | 2015-11-05 | 2018-10-09 | 江苏苏博特新材料股份有限公司 | A kind of resistant abrasion epoxy resin mortar and preparation method thereof |
| CN106517959B (en) * | 2016-11-22 | 2019-03-08 | 江苏苏博特新材料股份有限公司 | A kind of epoxy resin mortar of surface modified fibre toughening |
| EP3336120A1 (en) * | 2016-12-14 | 2018-06-20 | Sika Technology AG | Epoxy resin adhesive with a high compressive strength |
| CN106747019B (en) * | 2017-01-21 | 2019-08-20 | 浙江益森科技股份有限公司 | A kind of permeable epoxide resin polymer mortar in sponge city and its porous pavement of preparation |
| CN106883556B (en) * | 2017-03-21 | 2019-11-19 | 常州翔诺新材料科技有限公司 | A kind of recycled plastic regenerated fiber cooperates with reinforced epoxy composite material and preparation method with glass fibre |
| CN109970407A (en) * | 2017-12-15 | 2019-07-05 | 苏州混凝土水泥制品研究院有限公司 | A kind of structural strengthening aqueous epoxy resins modified cement mortar and preparation method thereof |
| CN108164196B (en) * | 2018-02-09 | 2021-04-13 | 十九冶成都建设有限公司 | Epoxy mortar, preparation method thereof and application thereof in pipe jacking construction |
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2020
- 2020-12-17 CN CN202011496922.8A patent/CN112592116B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4379870A (en) * | 1978-07-07 | 1983-04-12 | Mitsui Petrochemical Industries, Ltd. | Reinforcing material for hydraulic substances and method for the production thereof |
| CN111393069A (en) * | 2020-03-25 | 2020-07-10 | 深圳绿景环保再生资源有限公司 | Preparation method of epoxy mortar of modified powder and graded sand and epoxy mortar |
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| CN112592116A (en) | 2021-04-02 |
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