CN115536345A - Steel structure interface treatment mortar and preparation method thereof - Google Patents
Steel structure interface treatment mortar and preparation method thereof Download PDFInfo
- Publication number
- CN115536345A CN115536345A CN202211419267.5A CN202211419267A CN115536345A CN 115536345 A CN115536345 A CN 115536345A CN 202211419267 A CN202211419267 A CN 202211419267A CN 115536345 A CN115536345 A CN 115536345A
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- Prior art keywords
- steel structure
- interface treatment
- mortar
- structure interface
- water
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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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00525—Coating or impregnation materials for metallic surfaces
-
- 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
Abstract
The invention provides steel structure interface treatment mortar and a preparation method thereof, and belongs to the technical field of cement mortar. The steel structure interface treatment mortar has bidirectional affinity, can firmly bond a steel structure base layer and also can firmly bond with other cement-based mortar, has high tensile bonding strength with a steel structure with an anticorrosive coating, can effectively improve the bonding force of the surface of the steel structure, has excellent crack resistance, is suitable for machine spraying operation or manual coating, and plays an indispensable role in a steel structure wall surface system.
Description
Technical Field
The invention relates to the technical field of cement mortar, in particular to steel structure interface treatment mortar and a preparation method thereof.
Background
Compared with the traditional house, the steel structure house has strong advantages in the aspects of structural performance, use function, design and construction, comprehensive manufacturing cost and the like, and the development of the steel structure house not only has epoch-making significance in the aspects of pushing house industrialization and improving house quality, but also is beneficial to promoting the technical progress of the building industry in China, and is beneficial to pulling the internal demand of the metallurgical industry and promoting the development of energy-saving and environment-friendly building materials, thereby being one of the transformation and upgrade directions of the building industry.
With the rapid development of the assembly type steel structure, the demand of the steel structure enclosure material matched with the assembly type steel structure is increased. The steel member with the anticorrosive coating at present has compact and smooth surface and extremely low water absorption, has extremely weak direct bonding performance with various cement-based mortars and products such as plastering mortar, bonding mortar, thermal insulation mortar, wallboard and the like, is easy to fall off by adopting common mortar, and can not improve the bonding performance of the surface of the steel member. And further influences the requirements of sealing performance, fire resistance, thermal performance, sound insulation performance, decorative performance and the like of the steel structure residential wall system.
Therefore, it is needed to prepare a steel structure interface treatment mortar, which can improve the adhesion between the steel structure interface treatment mortar and a steel structure with an anticorrosive coating and reduce the falling of the mortar.
Disclosure of Invention
In view of the above, the present invention aims to provide a steel structure interface treatment mortar, which can effectively improve the adhesion property with the steel structure surface with an anticorrosive coating.
The steel structure interface treatment mortar provided by the invention comprises the following components in parts by weight:
100 to 150 portions of Portland cement, 5 to 15 portions of mineral admixture, 15 to 35 portions of re-dispersible latex powder, 200 to 350 portions of medium sand, 0.05 to 0.3 portion of cellulose ether, 0.010 to 0.2 portion of water repellent, 0.1 to 0.5 portion of water reducing agent, 0.001 to 0.002 portion of defoaming agent and 40 to 80 portions of water.
Preferably, the portland cement is grade p.o 42.5 cement, and the cement used in the embodiment of the invention is grade p.o 42.5 cement produced by kui-tung cement (tang shan) llc.
Preferably, the mineral admixture comprises one or more of silica fume, fly ash and limestone powder.
Preferably, the redispersible latex powder comprises one or more of ethylene/vinyl acetate copolymer, vinyl acetate/versatic acid ethylene copolymer and acrylic acid copolymer, and can be commercially available watt 5044N, 5010N, 4115N, 4015N and 328 latex powder.
Preferably, the medium sand is any one of natural river sand and quartz sand; the grain diameter of the medium sand is 0-2.36 mm.
Preferably, the cellulose ether comprises one or more of methyl cellulose, hydroxypropyl methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and carboxymethyl cellulose.
Preferably, the water repellent is GP SHP60, GPSHP50 and Yingchuangdegussa produced by the Dow chemical method
P750 and NT-10 produced by Loxowood.
Preferably, the water reducing agent is a high-performance polycarboxylate water reducing agent, and the water reducing rate of the high-performance polycarboxylate water reducing agent is 27%.
Preferably, the defoamer is a DF9010F defoamer, produced by basf, germany, a defoamer P803 or P886, produced by mingmelin chemistry, germany.
In the embodiment of the invention, except for special provisions, the raw materials are all products which are purchased conventionally in the market.
The invention also aims to provide a preparation method of the steel structure interface treatment mortar, which comprises the following steps:
(1) Weighing silicate cement, mineral admixture, redispersible latex powder, medium sand, cellulose ether, water repellent, water reducing agent and defoamer according to a proportion, and uniformly mixing to prepare powder;
(2) And (2) mixing the powder prepared in the step (1) with water according to a mass ratio to obtain the steel structure interface treatment mortar.
Compared with the prior art, the invention has the following beneficial effects:
compared with the traditional cement mortar, the added redispersible latex powder has higher ethylene content and better flexibility, can effectively form a film on the surface of a steel member, and mutually permeates with an anticorrosive coating of the steel member, thereby improving the adhesive property of the interface treatment mortar; meanwhile, the prepared interface treatment mortar has consistent deformability with a steel member and has good crack resistance. The water loss of the mortar is greatly reduced by adding the cellulose ether, and the construction time is prolonged. The problem that the interface treatment mortar and the steel member are easy to fall off under the soaking condition is solved by adding the water repellent, and the durability is improved. The interface treatment mortar provided by the invention has bidirectional affinity, can firmly bond a base layer, can well firmly bond the surface of the base layer by other cement-based mortar, has high tensile bonding strength with a steel member with an anticorrosive coating, can effectively improve the bonding force of the surface of the steel structure, has excellent crack resistance, is suitable for mechanical spraying operation or manual coating, and plays an indispensable role in a steel structure wall surface system.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
The steel structure interface treatment mortar is composed of the following raw materials in parts by weight:
100 parts of portland cement, 10 parts of mineral admixture, 20 parts of redispersible latex powder, 250 parts of medium sand, 0.2 part of cellulose ether, 0.1 part of water repellent, 0.1 part of water reducing agent, 0.001 part of defoamer and 50 parts of water;
the portland cement is golden corner P.O 42.5 cement; the mineral admixture is fly ash; the redispersible latex powder is a Wake 5044N latex powder; the medium sand is river sand with the particle size of 0-2.36 mm; the cellulose ether is hydroxyethyl cellulose; the water repellent is Dow GP SHP60; the high-performance polycarboxylate superplasticizer with the water reducing rate of 27 percent; the defoaming agent is DF9010F defoaming agent.
The preparation method of the steel structure interface treatment mortar comprises the following steps:
(1) Weighing portland cement, mineral admixture, redispersible latex powder, medium sand, cellulose ether, water repellent, water reducing agent and defoaming agent according to a proportion, and uniformly mixing to prepare powder;
(2) And (2) mixing the powder prepared in the step (1) with water according to a mass ratio to obtain the steel structure interface treatment mortar.
Example 2
The steel structure interface treatment mortar is composed of the following raw materials in parts by weight:
100 parts of Portland cement, 10 parts of mineral admixture, 25 parts of redispersible latex powder, 250 parts of medium sand, 0.2 part of cellulose ether, 0.1 part of water repellent, 0.1 part of water reducing agent, 0.001 part of defoaming agent and 50 parts of water;
the portland cement is kumquat P.O 42.5 cement; the mineral admixture is fly ash; the redispersible latex powder is a Wake 5044N latex powder; the medium sand is river sand with the particle size of 0-2.36 mm; the cellulose ether is hydroxyethyl cellulose; the water repellent is Dow GP SHP60; the high-performance polycarboxylate superplasticizer with the water reducing rate of 27 percent; the defoaming agent is DF9010F defoaming agent.
The preparation method of the steel structure interface treatment mortar comprises the following steps:
(1) Weighing silicate cement, mineral admixture, redispersible latex powder, medium sand, cellulose ether, water repellent, water reducing agent and defoamer according to a proportion, and uniformly mixing to prepare powder;
(2) And (2) mixing the powder prepared in the step (1) with water according to a mass ratio to obtain the steel structure interface treatment mortar.
Example 3
The steel structure interface treatment mortar is composed of the following raw materials in parts by weight:
100 parts of portland cement, 10 parts of mineral admixture, 30 parts of redispersible latex powder, 250 parts of medium sand, 0.2 part of cellulose ether, 0.1 part of water repellent, 0.1 part of water reducing agent, 0.001 part of defoamer and 50 parts of water;
the portland cement is golden corner P.O 42.5 cement; the mineral admixture is fly ash; the redispersible latex powder is a Wake 5044N latex powder; the medium sand is river sand with the particle size of 0-2.36 mm; the cellulose ether is hydroxyethyl cellulose; the water repellent is Dow GP SHP60; the high-performance polycarboxylate superplasticizer with the water reducing rate of 27 percent; the defoaming agent is DF9010F defoaming agent.
The preparation method of the steel structure interface treatment mortar comprises the following steps:
(1) Weighing silicate cement, mineral admixture, redispersible latex powder, medium sand, cellulose ether, water repellent, water reducing agent and defoamer according to a proportion, and uniformly mixing to prepare powder;
(2) And (2) mixing the powder prepared in the step (1) with water according to a mass ratio to obtain the steel structure interface treatment mortar.
The steel structure interface treatment mortars prepared in examples 1 to 3 were tested for tensile adhesive strength with a steel member having an anticorrosive coating, and the compression-fracture ratio was measured 。
Forming the interface treatment mortar on a steel plate with the size of 400mm multiplied by 200mm, wherein the forming size is 50mm multiplied by 3mm, performing a tensile bond strength test according to JC/T907-2018 concrete interface treatment agent, and increasing heat-humidity cycle treatment conditions on the basis of the standard 。
Wherein the heat-humidity cycle treatment conditions are as follows: the test pieces were cured for 7 days under curing conditions and then subjected to 25 heat-moisture cycles. The steps of each circulation are as follows:
a) Putting the test piece into a constant-temperature air-blast drying oven at the temperature of (70 +/-2) DEG C, taking out the test piece after 24h, placing the test piece for 1.5-2.0 h under the condition of maintenance, and cooling to room temperature;
b) And completely immersing the test piece cooled to room temperature into water at the temperature of (23 +/-2) DEG C, taking out the test piece after 24h, wiping off water stains on the surface by using a cloth, and standing for (1.5-2.0) h under the maintenance condition.
Preparing a test piece according to the GB/T17671, curing the test piece for 28 days under the curing condition, calculating the compressive strength and the flexural strength according to the GB/T17671 method, and calculating the compression-fracture ratio.
The test results are shown in table 1:
TABLE 1
As can be seen from Table 1, the mortars prepared in examples 1 to 3 have strong tensile bonding strength and the folding ratio meets the requirements. The steel structure interface treatment mortar prepared by the invention can be well applied to the surface of a steel member with an anticorrosive coating, can improve the tensile bonding strength with a cement-based material, and has good crack resistance.
Through the optimization of raw materials and the scientific proportion of the raw materials, the tensile bonding strength under the soaking treatment and freeze-thaw cycle treatment conditions is obviously improved, the problem that interface treatment mortar and steel components in the current market are easy to fall off under the soaking condition is solved, and the interface treatment mortar has better durability.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The steel structure interface treatment mortar is characterized by comprising the following components in parts by weight:
100 to 150 portions of Portland cement, 5 to 15 portions of mineral admixture, 15 to 35 portions of re-dispersible latex powder, 200 to 350 portions of medium sand, 0.05 to 0.3 portion of cellulose ether, 0.010 to 0.2 portion of water repellent, 0.1 to 0.5 portion of water reducing agent, 0.001 to 0.002 portion of antifoaming agent and 40 to 80 portions of water.
2. The steel structure interface treatment mortar of claim 1, wherein the mineral admixture comprises one or more of silica fume, fly ash and limestone powder.
3. The steel structure interface treatment mortar of claim 1, wherein the redispersible latex powder comprises one or more of ethylene/vinyl acetate copolymer, vinyl acetate/versatic acid ethylene copolymer and acrylic acid copolymer.
4. The steel structure interface treatment mortar according to claim 1, wherein the medium sand is any one of natural river sand or quartz sand; the average grain diameter of the medium sand is 0-2.36 mm.
5. The steel structure interface treatment mortar of claim 1, wherein the cellulose ether comprises one or more of methyl cellulose, hydroxypropyl methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and carboxymethyl cellulose.
6. The steel structure interface treatment mortar of claim 1, wherein the water reducer is a high-performance polycarboxylic acid water reducer.
7. The preparation method of the steel structure interface treatment mortar according to claim 1, characterized by comprising the following steps:
(1) Weighing portland cement, mineral admixture, redispersible latex powder, medium sand, cellulose ether, water repellent, water reducing agent and defoaming agent according to a proportion, and uniformly mixing to prepare powder;
(2) And (2) mixing the powder prepared in the step (1) with water according to a mass ratio to obtain the steel structure interface treatment mortar.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211419267.5A CN115536345A (en) | 2022-11-14 | 2022-11-14 | Steel structure interface treatment mortar and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211419267.5A CN115536345A (en) | 2022-11-14 | 2022-11-14 | Steel structure interface treatment mortar and preparation method thereof |
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| CN115536345A true CN115536345A (en) | 2022-12-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102942344A (en) * | 2012-11-26 | 2013-02-27 | 上海宝田新型建材有限公司 | Masonry binder for steel structure containment system |
| KR101882787B1 (en) * | 2018-03-16 | 2018-07-27 | 주식회사 가림이앤씨 | Coating construction and protection method of surface of concrete structure and steel structure using eco-friendly coating material |
| CN108751844A (en) * | 2018-06-14 | 2018-11-06 | 杭萧钢构股份有限公司 | A kind of steel construction interior wall interfacial agents with corrosion-inhibiting coating |
| CN109020370A (en) * | 2018-08-14 | 2018-12-18 | 杭萧钢构股份有限公司 | A kind of steel construction exterior wall boundary mortar with corrosion-inhibiting coating |
| CN109704686A (en) * | 2019-02-25 | 2019-05-03 | 杭萧钢构股份有限公司 | A kind of steel construction waterproof plaster mortar and its preparation method and application |
-
2022
- 2022-11-14 CN CN202211419267.5A patent/CN115536345A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102942344A (en) * | 2012-11-26 | 2013-02-27 | 上海宝田新型建材有限公司 | Masonry binder for steel structure containment system |
| KR101882787B1 (en) * | 2018-03-16 | 2018-07-27 | 주식회사 가림이앤씨 | Coating construction and protection method of surface of concrete structure and steel structure using eco-friendly coating material |
| CN108751844A (en) * | 2018-06-14 | 2018-11-06 | 杭萧钢构股份有限公司 | A kind of steel construction interior wall interfacial agents with corrosion-inhibiting coating |
| CN109020370A (en) * | 2018-08-14 | 2018-12-18 | 杭萧钢构股份有限公司 | A kind of steel construction exterior wall boundary mortar with corrosion-inhibiting coating |
| CN109704686A (en) * | 2019-02-25 | 2019-05-03 | 杭萧钢构股份有限公司 | A kind of steel construction waterproof plaster mortar and its preparation method and application |
Non-Patent Citations (1)
| Title |
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| 杭美艳;路兰;郝小龙;: "复合外加剂对以钢板为粘结基层的干混砂浆性能影响研究", 混凝土世界 * |
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