CN115536330A - Masonry structure mortar reinforcing structural adhesive and preparation method thereof - Google Patents
Masonry structure mortar reinforcing structural adhesive and preparation method thereof Download PDFInfo
- Publication number
- CN115536330A CN115536330A CN202211114128.1A CN202211114128A CN115536330A CN 115536330 A CN115536330 A CN 115536330A CN 202211114128 A CN202211114128 A CN 202211114128A CN 115536330 A CN115536330 A CN 115536330A
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- China
- Prior art keywords
- structural adhesive
- mortar
- epoxy resin
- masonry
- cement
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 52
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000000853 adhesive Substances 0.000 title claims description 50
- 230000001070 adhesive effect Effects 0.000 title claims description 50
- 239000003822 epoxy resin Substances 0.000 claims abstract description 33
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 33
- 239000004568 cement Substances 0.000 claims abstract description 22
- 239000003292 glue Substances 0.000 claims abstract description 12
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 claims abstract description 12
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000654 additive Substances 0.000 claims abstract description 11
- 230000000996 additive effect Effects 0.000 claims abstract description 11
- 239000004202 carbamide Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical group CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000004014 plasticizer Substances 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 2
- 230000009471 action Effects 0.000 claims description 2
- 125000003916 ethylene diamine group Chemical group 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 5
- 239000003638 chemical reducing agent Substances 0.000 abstract description 3
- 239000004567 concrete Substances 0.000 description 14
- 239000011148 porous material Substances 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000012745 toughening agent Substances 0.000 description 1
Images
Classifications
-
- 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
- C04B28/02—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 containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B2111/72—Repairing or restoring existing buildings or building materials
-
- 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
- C04B2111/72—Repairing or restoring existing buildings or building materials
- C04B2111/723—Repairing reinforced concrete
-
- 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
Landscapes
- 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)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides masonry structure mortar reinforcing structure glue and a preparation method thereof, and solves the problem of high hardening shrinkage rate of the repairing mortar in the prior art, the masonry structure mortar reinforcing structure glue is combined with mortar which is not reinforced by the original part of masonry, the reinforcing structure glue comprises cement, fine aggregate, epoxy resin structure glue and an additive, the additive is a mixture of triethylene glycol monomethyl ether and urea, the dosage is 0.2-0.3%, the hardening shrinkage rate of the cement can be effectively reduced due to the addition of the triethylene glycol monomethyl ether serving as a shrinkage reducing agent, and the possibility of secondary damage of a masonry structure caused by incompact reinforcing mortar in the follow-up process is effectively reduced.
Description
Technical Field
The invention relates to the technical field of engineering wall reinforcement, in particular to masonry structure mortar reinforcing structural adhesive and a preparation method thereof.
Background
With the lapse of time, the mortar strength of most brick-concrete masonry structures is obviously reduced, and the social demand for mortar reinforcement is more obvious. In the rapidly developing current society, methods for repairing mortar strength are increasing, and grouting reinforcement is widely applied to various fields such as houses, bridges and the like due to high efficiency, economy and simple and convenient construction. Currently, structural adhesives for reinforcing mortar are divided into three types, namely inorganic structural adhesives, organic structural adhesives and organic-inorganic composite structural adhesives. The inorganic structural adhesive mainly refers to a cement-based structural adhesive, has the widest application range, but has poor bonding performance in the application process; the organic structural adhesive takes organic matters with certain repairing characteristics as a repairing main agent, organic matters such as a toughening agent, an initiator, a coupling agent and the like are blended together, so that the organic structural adhesive has an effect of repairing mortar pores; the organic-inorganic composite structural adhesive which is composed of an inorganic material serving as a matrix and an organic substance is used as an auxiliary material can improve the bonding property of the inorganic structural adhesive, and meanwhile, the organic material has good flexibility to endow the structural adhesive with good fluidity. The cement-based epoxy resin mortar reinforcing structural adhesive has extremely strong physical properties and bonding strength, also has the advantages of crack resistance, seepage prevention, aging prevention and corrosion resistance, plays an important role in the mortar reinforcing process, and is widely applied to the process of repairing cracks of brick-concrete structures and steel-concrete structures.
Some repair type mortars are also available on the market, and have high hardening shrinkage and low strength.
Disclosure of Invention
The invention provides masonry structure mortar reinforcing structural adhesive and a preparation method thereof, and solves the problem of high hardening shrinkage rate of the repairing mortar in the prior art.
The technical scheme of the invention is realized as follows: a mortar reinforced structural adhesive for masonry structure, which is combined with the mortar partially weakened in original masonry structure,
the reinforced structural adhesive comprises cement, fine aggregate, epoxy resin structural adhesive and an additive.
Preferably, the additive is a mixture of triethylene glycol monomethyl ether and urea, and the dosage of the additive is 0.2% -0.3%.
Preferably, the mass of the triethylene glycol monomethyl ether and the urea is 3:1 to 2.
Preferably, the mass ratio of the cement to the fine aggregate to the epoxy resin structural adhesive is 100.
Preferably, the epoxy resin structural adhesive comprises epoxy resin, a plasticizer and a hardener;
the plasticizer is dibutyl phthalate, and the using amount of the plasticizer is 8% -15%; the hardening agent is ethylenediamine, and the mixing amount is 2%.
Preferably, the cement is portland cement;
the fine aggregate is a mixture of sand and yellow mud, wherein the sand is mountain sand with the fineness modulus of 3.0-2.3, the mass of particles with the particle size of more than 0.25mm is more than 50% of the total weight, the average particle size is 0.5-0.25mm, and the yellow mud is yellow mud rich in iron oxide and aluminum oxide.
Preferably, the mass ratio of the mountain sand to the yellow mud is 4:1.
the invention also provides a preparation method of the masonry structure mortar reinforcing structural adhesive, which is characterized by comprising the following steps:
1) Uniformly mixing the epoxy resin and the plasticizer at the temperature of 60 ℃ to prepare mixed epoxy resin;
2) Uniformly mixing the mixed epoxy resin and a hardening agent at 35 ℃ to prepare an epoxy resin structural adhesive;
3) And uniformly mixing the epoxy resin structural adhesive, fine aggregate, cement and an additive at room temperature to prepare a mixed material, adding water, and fully stirring to obtain the epoxy resin structural adhesive.
Preferably, the adding amount of the water and the mixed material in the step 3) is 0.125 by mass ratio.
In the three steps of the preparation method of the mortar reinforced structural adhesive, the mixing time is 3 to 5min.
The invention has the beneficial effects that:
1) Triethylene glycol monomethyl ether as a shrinkage reducing agent can effectively reduce the hardening shrinkage of cement, can greatly improve the 7d strength value of mortar, and effectively reduce the damage of injection disturbance to a masonry structure. After the mortar is hardened, the urea can be separated out to fill the inner pores of the mortar, so that the compressive strength value of the mortar can be effectively improved, and the urea plays a positive role in reinforcing the strength of the mortar. As the triethylene glycol monomethyl ether used as a shrinkage reducing agent is added, the hardening shrinkage of the cement can be effectively reduced, and the possibility of secondary damage of a masonry structure caused by incompact mortar in the follow-up process is effectively reduced.
2) The yellow mud can reduce the manufacturing cost, fill the internal pores of the original mortar, achieve the effect of compact reinforcement, and meanwhile, the rich iron oxide and aluminum oxide can enhance the early bonding strength of the cementing material.
3) The epoxy resin structural adhesive and other raw materials form polymer emulsion, so that the flowability and the thickening property of cement can be effectively enhanced, and the cement can flow in the pores of the original mortar, so that the aim of reacting with the original mortar is fulfilled. The reinforcing structure adhesive has certain viscosity and certain fluidity, can be diffused to the periphery in the original mortar pores, can be applied to mortar reinforcement of masonry structures, and can also be applied to leakage stoppage construction of cracking, pores and water seepage of concrete structures.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a preparation method of a mortar reinforcing structural adhesive according to the present invention;
FIG. 2 is a graph comparing reduction ratios according to the example of the present invention;
FIG. 3 is a graph comparing the compressive strength of the blocks of the examples of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The mortar reinforcing structure glue for the masonry structure has the combined action of the reinforcing structure glue and mortar which is not reinforced by the original part of the masonry so as to achieve the purpose of increasing the strength of the masonry structure, and the reinforcing structure glue comprises cement, fine aggregate, epoxy resin structure glue and an additive.
As shown in fig. 1, the present invention further provides a method for preparing mortar reinforced structural adhesive for masonry structure, comprising the following steps:
1) Stirring epoxy resin and dibutyl phthalate for 5min at 60 ℃, and uniformly mixing to obtain mixed epoxy resin;
2) Stirring the mixed epoxy resin and ethylenediamine at 35 ℃ for 3min, and uniformly mixing to obtain an epoxy resin structural adhesive;
3) Mixing the epoxy resin structural adhesive, fine aggregate, cement, triethylene glycol monomethyl ether and urea at room temperature for 3min, uniformly stirring to prepare a mixed material, adding water, and fully stirring for 3min, wherein the addition amount of the water and the mixed material is 0.125.
The invention uses three embodiments to explain the technical scheme in detail;
example 1
A masonry structure mortar reinforcing structural adhesive is composed of the following components by weight: 90g of epoxy resin; 8g of dibutyl phthalate; 2g of ethylenediamine; 250g of cement; 500g of fine aggregate; triethylene glycol monomethyl ether 1.3g; 0.4g of urea.
The mortar reinforcing structure adhesive prepared by the patent is prepared by mixing and preparing each raw material according to the steps.
Example 2
The embodiment provides masonry structure mortar reinforcing structural adhesive, which consists of the following components in parts by weight: 90g of epoxy resin; 8g of dibutyl ester; 2g of ethylenediamine; 250g of cement; 500g of fine aggregate; triethylene glycol monomethyl ether 1.6g; 0.5g of urea.
Example 3
The embodiment provides masonry structure mortar reinforcing structural adhesive, which consists of the following components in parts by weight: 90g of epoxy resin; 8g of dibutyl ester; 2g of ethylenediamine; 250g of cement; 500g of fine aggregate; triethylene glycol monomethyl ether 1.9g; 0.6g of urea.
The invention also prepares a group of comparative examples in a traditional way, wherein each raw material in the comparative examples is only 90g of epoxy resin; 250g of cement; 500g of fine aggregate.
The invention carries out reduction experiments and building block compressive strength experiments on three groups of examples and 1 group in proportion.
The experiment mode of the reduction experiment is as follows: the concrete test pieces of examples 1, 2 and 3 and comparative example were injected by injection into a mixed concrete block of the same degree of wear, and after the concrete test pieces were molded, the mold was removed at 1 d (from the time when water was added to the concrete during mixing), the concrete test pieces were transferred to a constant temperature and humidity environment for curing, and immediately the initial lengths thereof were measured, and thereafter the lengths thereof were measured according to the prescribed age (7 d, 28 d).
The building block compressive strength experiment, the experimental mode is: the concrete samples of examples 1, 2 and 3 and comparative example were injected into the same-loss mixed concrete block by injection, and the mold was removed 1 d (from the time of adding water to the concrete during mixing) after the concrete block was molded, and the concrete block was transferred to a constant temperature and humidity environment for curing, and the compressive strength was measured according to the specified age (7 d, 28 d).
The experimental results show in fig. 2 and fig. 3 that the mortar reinforcing structural adhesive prepared by the invention effectively reduces the hardening shrinkage rate of a masonry structure within 28 days, and simultaneously enhances the compressive strength.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a masonry structure mortar reinforcement structure glue, reinforcement structure glue and the original partial mortar combined action that loses the strength of brickwork which characterized in that:
the reinforcing structure glue comprises cement, fine aggregate, epoxy resin structure glue and an additive.
2. The mortar reinforced structural adhesive for masonry structures according to claim 1,
the additive is a mixture of triethylene glycol monomethyl ether and urea, and the dosage of the additive is 0.2-0.3%.
3. The mortar reinforced structural adhesive for masonry structures according to claim 2, wherein:
the mass of the triethylene glycol monomethyl ether and the urea is 3:1 to 2.
4. The mortar reinforced structural adhesive for masonry structures according to claim 1, wherein:
the mass ratio of the cement to the fine aggregate to the epoxy resin structural adhesive is 100.
5. The mortar reinforced structural adhesive for masonry structures according to claim 1, wherein:
the epoxy resin structural adhesive comprises epoxy resin, a plasticizer and a hardening agent;
the plasticizer is dibutyl phthalate, and the using amount of the plasticizer is 8-15%; the hardening agent is ethylenediamine, and the mixing amount is 2%.
6. The mortar reinforced structural adhesive for masonry structures according to claim 1, wherein:
the cement is portland cement;
the fine aggregate is a mixture of sand and yellow mud, wherein the sand is mountain sand with the fineness modulus of 3.0-2.3, the mass of particles with the particle size of more than 0.25mm is more than 50% of the total weight, the average particle size is 0.5-0.25mm, and the yellow mud is yellow mud rich in iron oxide and aluminum oxide.
7. The mortar reinforced structural adhesive for masonry structures according to claim 6, wherein:
the mass ratio of the mountain sand to the yellow mud is 4:1.
8. the method for preparing the mortar reinforced structural adhesive for masonry structures according to any one of claims 1 to 7, comprising the steps of:
1) Uniformly mixing epoxy resin and a plasticizer at the temperature of 60 ℃ to prepare mixed epoxy resin;
2) Uniformly mixing the mixed epoxy resin and a hardening agent at 35 ℃ to prepare an epoxy resin structural adhesive;
3) And uniformly mixing the epoxy resin structural adhesive, fine aggregate, cement and an additive at room temperature to prepare a mixed material, adding water, and fully stirring to obtain the epoxy resin structural adhesive.
9. The preparation method of masonry structure mortar reinforcing structural adhesive according to claim 8, characterized by:
the adding amount of the water and the mixed material in the step 3) is 0.125 by mass ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211114128.1A CN115536330A (en) | 2022-09-14 | 2022-09-14 | Masonry structure mortar reinforcing structural adhesive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211114128.1A CN115536330A (en) | 2022-09-14 | 2022-09-14 | Masonry structure mortar reinforcing structural adhesive and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115536330A true CN115536330A (en) | 2022-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211114128.1A Pending CN115536330A (en) | 2022-09-14 | 2022-09-14 | Masonry structure mortar reinforcing structural adhesive and preparation method thereof |
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| Country | Link |
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| CN (1) | CN115536330A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100787646B1 (en) * | 2007-03-15 | 2007-12-21 | 김의연 | Mortar composition for reinforcement of underwater concrete structure and method for reinforcement of concrete structure using thereof |
| CN104446136A (en) * | 2014-10-31 | 2015-03-25 | 桂林理工大学 | Preparation method of grouting reinforcement glue for fine concrete cracks |
| CN108675692A (en) * | 2018-05-03 | 2018-10-19 | 广州挚业化工有限公司 | A kind of fast solidification water epoxy concrete repair paint and preparation method thereof |
| CN114315261A (en) * | 2021-11-23 | 2022-04-12 | 南京工程学院 | Polymer repair mortar for quickly repairing pavement and preparation method thereof |
-
2022
- 2022-09-14 CN CN202211114128.1A patent/CN115536330A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100787646B1 (en) * | 2007-03-15 | 2007-12-21 | 김의연 | Mortar composition for reinforcement of underwater concrete structure and method for reinforcement of concrete structure using thereof |
| CN104446136A (en) * | 2014-10-31 | 2015-03-25 | 桂林理工大学 | Preparation method of grouting reinforcement glue for fine concrete cracks |
| CN108675692A (en) * | 2018-05-03 | 2018-10-19 | 广州挚业化工有限公司 | A kind of fast solidification water epoxy concrete repair paint and preparation method thereof |
| CN114315261A (en) * | 2021-11-23 | 2022-04-12 | 南京工程学院 | Polymer repair mortar for quickly repairing pavement and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 林艳梅: "混凝土减缩剂的制备与研究", 《新型建筑材料》, vol. 48, no. 9, pages 254 - 256 * |
| 江西省土地利用管理局等编著: "《江西土壤》", 中国农业科技出版社, pages: 507 * |
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