CN112979256A - Concrete anti-carbonization mortar treatment process - Google Patents
Concrete anti-carbonization mortar treatment process Download PDFInfo
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- CN112979256A CN112979256A CN202110207305.XA CN202110207305A CN112979256A CN 112979256 A CN112979256 A CN 112979256A CN 202110207305 A CN202110207305 A CN 202110207305A CN 112979256 A CN112979256 A CN 112979256A
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- mortar
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- concrete
- carbonization
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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
- 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
- C04B28/10—Lime cements or magnesium oxide 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
- C04B2111/20—Resistance against chemical, physical or biological attack
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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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses a treatment process of concrete anti-carbonization mortar, which comprises the following steps: step 1: screening and washing raw materials: sieving sand and then cleaning; step 2: mixing raw materials: adding sand, cement and lime paste into a stirrer according to a ratio; and step 3: preparing mortar: adding deionized water according to the proportion, stirring for 2min, adding the asphalt emulsion, the waterproof agent, the dispersing agent, the defoaming agent, the film-forming agent and the glass fiber, and stirring for later use; and 4, step 4: the mortar is used: when the concrete reaches initial setting, the prepared mortar is coated on the surface of the concrete and is calendered; and 5: reusing the mortar: after the step 4 is carried out for 8-16h, the prepared mortar is coated on the surface again and is calendered; step 6: and (5) maintaining. The invention relates to the technical field of concrete protection, and discloses a concrete anti-carbonization mortar treatment process, which solves the problem that concrete is easy to carbonize and ensures the stability of a concrete structure.
Description
Technical Field
The invention relates to the technical field of concrete protection, in particular to a treatment process of concrete anti-carbonization mortar.
Background
The concrete is artificial stone which is prepared by taking cement as a main cementing material, adding water, sand, stones and chemical additives and mineral admixtures if necessary, mixing the materials according to a proper proportion, uniformly stirring, densely molding, curing and hardening. Concrete is mainly divided into two stages and states: plastic state before setting and hardening, namely fresh concrete or concrete mixture; hardened, i.e. hardened concrete or concrete. The concrete strength grade is divided into a cubic compressive strength standard value, and the Chinese common concrete strength grade is divided into 14 grades: c15, C20, C25, C30, C35, C40, C45, C50, C55, C60, C65, C70, C75 and C80.
Concrete carbonization is an important form of aging, and is characterized in that CO2 in air erodes concrete, so that the concrete is gradually neutralized, steel bars in the concrete are corroded, a concrete protective layer can fall off after corrosion and expansion of the steel bars, the steel bars are further corroded, the structure gradually loses bearing capacity, and structural damage finally occurs.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a treatment process of concrete anti-carbonization mortar, which solves the problem that concrete is easy to carbonize and ensures the stability of a concrete structure.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a treatment process of concrete anti-carbonization mortar is disclosed, wherein the mortar is prepared from the following components in parts by weight: 60-120 parts of deionized water, 20-35 parts of sand, 13-20 parts of cement, 3-8 parts of lime paste, 3-6 parts of asphalt emulsion, 5-12 parts of a waterproof agent, 0.6-1.6 parts of a dispersing agent, 0.7-2.1 parts of a defoaming agent, 3-7 parts of a film forming agent and 8-13 parts of glass fiber;
the treatment process comprises the following steps:
step 1: screening and washing raw materials: sieving sand and then cleaning;
step 2: mixing raw materials: adding sand, cement and lime paste into a stirrer according to a ratio;
and step 3: preparing mortar: adding deionized water according to the proportion, stirring for 2min, adding asphalt emulsion, waterproofing agent, dispersant, defoaming agent, film forming agent and glass fiber, and stirring for 5-8min for later use;
and 4, step 4: the mortar is used: when the concrete reaches initial setting, the prepared mortar is coated on the surface of the concrete and is calendered, and the coating thickness is 4-8 mm;
and 5: reusing the mortar: after the step 4 is carried out for 8-16h, the newly prepared mortar is coated on the surface and is calendered, and the coating thickness is 3-6 mm;
step 6: and (5) maintenance: keeping the surface in a wet state, and maintaining for at least 7 days.
Preferably, the mortar is prepared from the following components in parts by weight: 90 parts of deionized water, 27 parts of sand, 17 parts of cement, 6 parts of lime paste, 5 parts of asphalt emulsion, 8 parts of waterproof agent, 1.1 parts of dispersing agent, 1.6 parts of defoaming agent, 5 parts of film forming agent and 10 parts of glass fiber.
Preferably, the water repellent is a chloride metal water repellent or a metal soap water repellent.
Preferably, the dispersant is one of polycarboxylate, polyacrylic acid sodium salt and naphthalene sulfonate aldehyde condensate.
Preferably, the defoaming agent is one of n-butyl alcohol, polypropylene and tributyl phosphate.
Preferably, the film forming agent is dodecanol ester.
Preferably, the modulus of the sand in the step 1 is 1.6-3.0.
Preferably, the stirring speed in the step 3 is 110-190 r/min.
(III) advantageous effects
The invention provides a concrete anti-carbonization mortar treatment process, which has the following beneficial effects: through having added pitch emulsion and cement in the mortar and having closely knit concrete structure, make outside gas be difficult to enter into inside the concrete, also make the surface closely knit through the waterproof agent, avoided the top layer of mortar preparation to take place the carbonization, prolonged the life-span, guarantee concrete structure's stability, added glass fiber in the mortar in addition, improved the stable in structure on top layer, improved anti breakage ability, further improved the carbonization effect of preventing of concrete.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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 first embodiment is as follows:
a treatment process of concrete anti-carbonization mortar is disclosed, wherein the mortar is prepared from the following components in parts by weight: 60 parts of deionized water, 20 parts of sand, 13 parts of cement, 3 parts of lime paste, 3 parts of asphalt emulsion, 5 parts of a waterproof agent, 0.6 part of a dispersing agent, 0.7 part of a defoaming agent, 3 parts of a film forming agent and 8 parts of glass fiber;
the treatment process comprises the following steps:
step 1: screening and washing raw materials: sieving sand and then cleaning;
step 2: mixing raw materials: adding sand, cement and lime paste into a stirrer according to a ratio;
and step 3: preparing mortar: adding deionized water according to the proportion, stirring for 2min, adding asphalt emulsion, waterproof agent, dispersant, defoamer, film-forming agent and glass fiber, and stirring for 8min for later use;
and 4, step 4: the mortar is used: when the concrete reaches initial setting, the prepared mortar is coated on the surface of the concrete and is calendered, and the coating thickness is 4 mm;
and 5: reusing the mortar: after the step 4 is carried out for 16 hours, coating the prepared mortar on the surface again and performing calendaring, wherein the coating thickness is 6 mm;
step 6: and (5) maintenance: keeping the surface in a wet state, and maintaining for at least 7 days.
The waterproof agent is chloride metal waterproof agent or metal soap waterproof agent.
The dispersant is one of polycarboxylate, polyacrylic acid sodium salt and naphthalene sulfonate aldehyde condensate.
The defoaming agent is one of n-butyl alcohol, polypropylene alcohol and tributyl phosphate.
The film forming agent is dodecanol ester.
The modulus of the sand in the step 1 is 1.6-3.0.
In the step 3, the stirring speed is 190 r/min.
Example two:
different from the first embodiment, the mortar is prepared from the following components in parts by weight: 90 parts of deionized water, 27 parts of sand, 17 parts of cement, 6 parts of lime paste, 5 parts of asphalt emulsion, 8 parts of waterproof agent, 1.1 parts of dispersing agent, 1.6 parts of defoaming agent, 5 parts of film forming agent and 10 parts of glass fiber.
Example three:
different from the first embodiment, the mortar is prepared from the following components in parts by weight: 120 parts of deionized water, 35 parts of sand, 20 parts of cement, 8 parts of lime paste, 6 parts of asphalt emulsion, 12 parts of waterproof agent, 1.6 parts of dispersing agent, 2.1 parts of defoaming agent, 7 parts of film forming agent and 13 parts of glass fiber.
Based on the above, the invention has the advantages that: through having added pitch emulsion and cement in the mortar and having closely knit concrete structure, make outside gas be difficult to enter into inside the concrete, also make the surface closely knit through the waterproof agent, avoided the top layer of mortar preparation to take place the carbonization, prolonged the life-span, guarantee concrete structure's stability, added glass fiber in the mortar in addition, improved the stable in structure on top layer, improved anti breakage ability, further improved the carbonization effect of preventing of concrete.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A concrete anti-carbonization mortar treatment process is characterized by comprising the following steps: the mortar is prepared from the following components in parts by weight: 60-120 parts of deionized water, 20-35 parts of sand, 13-20 parts of cement, 3-8 parts of lime paste, 3-6 parts of asphalt emulsion, 5-12 parts of a waterproof agent, 0.6-1.6 parts of a dispersing agent, 0.7-2.1 parts of a defoaming agent, 3-7 parts of a film forming agent and 8-13 parts of glass fiber;
the treatment process comprises the following steps:
step 1: screening and washing raw materials: sieving sand and then cleaning;
step 2: mixing raw materials: adding sand, cement and lime paste into a stirrer according to a ratio;
and step 3: preparing mortar: adding deionized water according to the proportion, stirring for 2min, adding asphalt emulsion, waterproofing agent, dispersant, defoaming agent, film forming agent and glass fiber, and stirring for 5-8min for later use;
and 4, step 4: the mortar is used: when the concrete reaches initial setting, the prepared mortar is coated on the surface of the concrete and is calendered, and the coating thickness is 4-8 mm;
and 5: reusing the mortar: after the step 4 is carried out for 8-16h, the newly prepared mortar is coated on the surface and is calendered, and the coating thickness is 3-6 mm;
step 6: and (5) maintenance: keeping the surface in a wet state, and maintaining for at least 7 days.
2. The concrete anti-carbonization mortar treatment process according to claim 1, characterized in that: the mortar is prepared from the following components in parts by weight: 90 parts of deionized water, 27 parts of sand, 17 parts of cement, 6 parts of lime paste, 5 parts of asphalt emulsion, 8 parts of waterproof agent, 1.1 parts of dispersing agent, 1.6 parts of defoaming agent, 5 parts of film forming agent and 10 parts of glass fiber.
3. The concrete anti-carbonization mortar treatment process according to claim 1, characterized in that: the waterproof agent is a chloride metal waterproof agent or a metal soap waterproof agent.
4. The concrete anti-carbonization mortar treatment process according to claim 1, characterized in that: the dispersing agent is one of polycarboxylate, polyacrylic acid sodium salt and naphthalene sulfonate aldehyde condensate.
5. The concrete anti-carbonization mortar treatment process according to claim 1, characterized in that: the defoaming agent is one of n-butyl alcohol, polypropylene alcohol and tributyl phosphate.
6. The concrete anti-carbonization mortar treatment process according to claim 1, characterized in that: the film forming agent is dodecanol ester.
7. The concrete anti-carbonization mortar treatment process according to claim 1, characterized in that: the modulus of the sand in the step 1 is 1.6-3.0.
8. The concrete anti-carbonization mortar treatment process according to claim 1, characterized in that: the stirring speed in the step 3 is 110-.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110207305.XA CN112979256A (en) | 2021-02-25 | 2021-02-25 | Concrete anti-carbonization mortar treatment process |
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| CN202110207305.XA CN112979256A (en) | 2021-02-25 | 2021-02-25 | Concrete anti-carbonization mortar treatment process |
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| CN112979256A true CN112979256A (en) | 2021-06-18 |
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| CN202110207305.XA Withdrawn CN112979256A (en) | 2021-02-25 | 2021-02-25 | Concrete anti-carbonization mortar treatment process |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3638646A1 (en) * | 1986-11-12 | 1988-06-01 | Knauf Westdeutsche Gips | Process and products for refurbishing and finishing concrete |
| CN101255042A (en) * | 2008-04-11 | 2008-09-03 | 清华大学 | Mortar and concrete modified by emulsified asphalt |
| CN101693610A (en) * | 2009-09-30 | 2010-04-14 | 浙江大学宁波理工学院 | Concrete carbonization preventing paint |
| CN104591657A (en) * | 2015-02-13 | 2015-05-06 | 中国科学院海洋研究所 | Polymer-modified cement-based dual-component protection mortar for surface layer of flexible concrete |
| CN105967566A (en) * | 2016-05-11 | 2016-09-28 | 北京中德新亚建筑技术有限公司 | Double-component concrete anti-carbonization coating and preparation method thereof |
| CN106904891A (en) * | 2017-03-21 | 2017-06-30 | 新疆科能防水防护技术股份有限公司 | Carbonization preventing paint and preparation method thereof |
| CN108863167A (en) * | 2017-05-15 | 2018-11-23 | 江苏苏博特新材料股份有限公司 | Concrete reparation and means of defence and structure based on asphalt material |
| CN113402243A (en) * | 2021-06-23 | 2021-09-17 | 武汉理工大学 | Method for improving durability of concrete product by using carbonized coating |
-
2021
- 2021-02-25 CN CN202110207305.XA patent/CN112979256A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3638646A1 (en) * | 1986-11-12 | 1988-06-01 | Knauf Westdeutsche Gips | Process and products for refurbishing and finishing concrete |
| CN101255042A (en) * | 2008-04-11 | 2008-09-03 | 清华大学 | Mortar and concrete modified by emulsified asphalt |
| CN101693610A (en) * | 2009-09-30 | 2010-04-14 | 浙江大学宁波理工学院 | Concrete carbonization preventing paint |
| CN104591657A (en) * | 2015-02-13 | 2015-05-06 | 中国科学院海洋研究所 | Polymer-modified cement-based dual-component protection mortar for surface layer of flexible concrete |
| CN105967566A (en) * | 2016-05-11 | 2016-09-28 | 北京中德新亚建筑技术有限公司 | Double-component concrete anti-carbonization coating and preparation method thereof |
| CN106904891A (en) * | 2017-03-21 | 2017-06-30 | 新疆科能防水防护技术股份有限公司 | Carbonization preventing paint and preparation method thereof |
| CN108863167A (en) * | 2017-05-15 | 2018-11-23 | 江苏苏博特新材料股份有限公司 | Concrete reparation and means of defence and structure based on asphalt material |
| CN113402243A (en) * | 2021-06-23 | 2021-09-17 | 武汉理工大学 | Method for improving durability of concrete product by using carbonized coating |
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Application publication date: 20210618 |