CN111848066A - Rapid road repairing mortar and construction process thereof - Google Patents
Rapid road repairing mortar and construction process thereof Download PDFInfo
- Publication number
- CN111848066A CN111848066A CN202010744587.2A CN202010744587A CN111848066A CN 111848066 A CN111848066 A CN 111848066A CN 202010744587 A CN202010744587 A CN 202010744587A CN 111848066 A CN111848066 A CN 111848066A
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- repair mortar
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- rapid road
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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
- C04B28/06—Aluminous cements
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/005—Methods or materials for repairing pavings
-
- 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
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/05—Materials having an early high strength, e.g. allowing fast demoulding or formless casting
-
- 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
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a rapid road repairing mortar which comprises the following components in parts by weight: aggregate: 600-700 parts of sulphoaluminate cement: 300-400 parts of zeolite powder: 30-50 parts of silica fume: 20-30 parts of redispersible latex powder: 20-30 parts of a polycarboxylic acid water reducing agent: 5-10 parts of hydroxypropyl methyl cellulose: 1-3 parts, sodium gluconate: 2-3 parts of defoaming agent: 1-2 parts of starch ether: 0.2 to 0.8 portion. The rapid road repair mortar provided by the invention is scientific in proportioning, the self efficacies of the components are fully exerted, the components interact with each other, and the overall performance of the mixed material is good; the construction process is simple to operate, can be used after being added with water and stirred on site, and has the advantages of fast strength development, high bonding strength, good crack resistance and water resistance and excellent durability; the application requirement of quick repair is met, and the traffic can be opened two hours after the repair is finished, so that the influence on normal traffic is avoided.
Description
Technical Field
The invention relates to the technical field of road construction, in particular to a rapid road repair mortar and a construction process thereof.
Background
In recent years, with the rapid development of national economy, the quantity of vehicles kept by residents is rapidly increased, a road network is rapidly developed, with the increase of the service life of roads, the roads are damaged and destroyed to a certain extent due to the defects of low breaking strength, easy cracking and the like, and the diseases such as cracking, pot holes, slab staggering, arching and the like appear, and if the repair treatment is not carried out in time, the diseases are rapidly enlarged, so that the driving safety is endangered.
Meanwhile, in recent years, the road pavement is damaged more rapidly due to the fact that traffic load is heavy, traffic density is increased, and driving speed is increased, and road pavement repairing work is increasingly severe. Aiming at the rapid pavement repair, the strength and the durability of the repaired pavement are required to be ensured, and the requirements of rapid repair, rapid traffic opening, normal traffic influence avoidance and the like are also required to be met.
Disclosure of Invention
The invention aims to provide rapid road repair mortar and a construction process thereof, which solve the problems of various cracks, pitted surfaces, plate corner peeling and the like on the road surface and improve the strength and the durability of the road.
The technical scheme of the invention is as follows:
the rapid road repair mortar comprises the following components in parts by weight:
aggregate: 600-700 parts of (A) and (B),
sulphoaluminate cement: 300-400 parts of (A) and (B),
zeolite powder: 30-50 parts of (by weight),
silica fume: 20-30 parts of (by weight),
redispersible latex powder: 20-30 parts of (by weight),
polycarboxylic acid water reducing agent: 5-10 parts of (A) a water-soluble polymer,
hydroxypropyl methylcellulose: 1-3 parts of (A) a solvent,
sodium gluconate: 2-3 parts of (A) a solvent,
defoaming agent: 1-2 parts of (A) a solvent,
starch ether: 0.2 to 0.8 portion.
Further, the rapid road repair mortar comprises the following components in parts by weight:
aggregate: 650 parts of (a) a water-soluble polymer,
sulphoaluminate cement: 350 parts of (a) to (b),
zeolite powder: 30 parts of (a) to (b),
silica fume: 20 parts of (by weight), and mixing the components,
redispersible latex powder: 25 parts of (a) to (b),
polycarboxylic acid water reducing agent: 10 parts of (a) to (b),
hydroxypropyl methylcellulose: 2 parts of (a) to (b),
sodium gluconate: 2.5 parts of (A) a reaction product,
defoaming agent: 2 parts of (a) to (b),
starch ether: 0.6 part.
Further, the aggregate is composed of coarse aggregate and fine aggregate, the mixing ratio of the coarse aggregate and the fine aggregate is 1:4 by weight, the coarse aggregate is limestone macadam with the thickness of 10-20mm, and the fine aggregate is medium-coarse sand.
Further, the sulphoaluminate cement is a fast hardening sulphoaluminate cement with a strength grade of 42.5.
Further, the viscosity of hydroxypropylmethylcellulose was 100000 mPas.
Further, the construction process of the rapid road repair mortar comprises the following steps: when in use, the water adding amount is 15-20% of the total weight of the rapid road repair mortar, and the concrete steps are as follows:
s1: cleaning the road, and cleaning up the floating soil, floating sand and broken stones;
s2: wetting by water, brushing an interface adhesive with the thickness of 0.5-1mm after no clear water exists;
s3: adding water into the rapid road repair mortar, and fully stirring by using an electric drill;
s4: and (4) after the interface adhesive is formed into a film, repairing by using the repairing material in S3, and finishing construction within 30 minutes from the water addition.
Furthermore, when in use, the water addition amount is 17 percent of the total weight of the rapid road repair mortar.
Furthermore, the interface adhesive adopts a cement-based interface bonding material.
The invention has the beneficial effects that:
1. the road rapid repair mortar provided by the invention fully exerts the self-efficiency of each component through reasonable scientific proportioning, and each component interacts with each other, and through experimental comparison, the overall application performance of the mixed material is good and is obviously superior to that of the existing repair mortar;
wherein the content of the first and second substances,
aggregate: limestone broken stones of 10-20mm and medium coarse sand are selected as aggregate, so that the skeleton supporting effect and the compacting effect are achieved, and the good volume stability of the repair mortar is ensured.
Sulphoaluminate cement: the mortar has fast setting and hardening, high hourly strength and improved strength and volume stability.
Zeolite powder: the zeolite powder can expand when meeting water in the repair mortar, so that the compactness of the repair mortar is improved, and capillary gaps in the repair mortar are filled.
Silica fume: the pore structure of the repair mortar can be improved, the capillary pores can be correspondingly reduced, and the impermeability, the freezing resistance and the corrosion resistance are improved.
Redispersible latex powder: the redispersible latex powder is dispersed to form a film and used as a second adhesive to play a role in enhancing, the protective colloid is absorbed by the repair mortar system, and the film-formed polymer resin is used as an enhancing material to be distributed in the whole repair mortar system, so that the cohesive force of the repair mortar is increased.
Polycarboxylic acid water reducing agent: the high-viscosity water-reducing agent has extremely high dispersibility and extremely high water-reducing rate, provides guarantee for preparing repair mortar, is favorable for pouring and compacting the repair mortar, reduces viscosity, has good cohesiveness and moderate air content, and is suitable for pumping.
Hydroxypropyl methylcellulose: as a water-retaining agent and a retarder of the repair mortar, the repair mortar has pumpability, improves the dispersibility of cement-sand, greatly improves the plasticity and water-retaining property of the repair mortar, has an effect on preventing cracks and can enhance the strength of cement.
Sodium gluconate: the retarder used as the repair mortar has the functions of retarding coagulation and reducing water, and can delay the initial setting time of the repair mortar so as to prolong the operable time of the repair mortar.
Defoaming agent: the mortar is used for reducing bubbles in the repair mortar, improving the pore structure, improving the compactness, and further improving various physical and mechanical properties and durability such as strength, durability, bonding strength and the like.
Starch ether: the starch ether and the hydroxypropyl methyl cellulose are matched to show good synergistic effect of the starch ether and the hydroxypropyl methyl cellulose, so that the sag resistance and the slip resistance of the repair mortar are improved, the consistency of the repair mortar is increased, the flow performance is improved, and the construction is smoother.
2. The aggregate, the zeolite powder, the silica fume, the redispersible latex powder, the polycarboxylic acid water reducing agent, the hydroxypropyl methyl cellulose, the sodium gluconate, the defoaming agent, the starch ether and the sulphoaluminate cement are mixed, and through reasonable scientific proportioning and synergistic effect of all the components, the rapid solidification is realized, the repair mortar is ensured to have good physical and mechanical properties and durability, the compression resistance of the mixed material is effectively improved, the pressure bearing capacity is as high as 40MPa, the flexural strength is obviously improved to 6MPa, the traffic can be opened after two hours after pavement repair is finished, and the foundation is laid for rapid construction and construction quality guarantee.
3. The construction process of the rapid road repair mortar provided by the invention is simple to operate, can be used after being added with water and stirred on site, has the advantages of rapid strength development, high bonding strength, good crack resistance and water resistance and excellent durability, not only realizes rapid construction, but also ensures the construction quality.
Detailed Description
The invention is further illustrated by the following examples.
Example 1: the rapid road repair mortar comprises the following components in parts by weight: 600 parts of aggregate, 300 parts of sulphoaluminate cement, 30 parts of zeolite powder, 20 parts of silica fume, 20 parts of redispersible latex powder, 5 parts of polycarboxylic acid water reducing agent, 1 part of hydroxypropyl methyl cellulose, 2 parts of sodium gluconate, 1 part of defoaming agent and 0.2 part of starch ether.
The construction process of the rapid road repair mortar comprises the following steps: when in use, the water adding amount is 15 percent of the total weight of the rapid road repair mortar, and the concrete steps are as follows:
s1: cleaning the road, and cleaning up the floating soil, floating sand and broken stones;
s2: wetting by water, brushing an interface adhesive with the thickness of 0.5-1mm after no clear water exists;
s3: adding water into the rapid road repair mortar, and fully stirring by using an electric drill;
s4: and (4) after the interface adhesive is formed into a film, repairing by using the repairing material in S3, and finishing construction within 30 minutes from the water addition.
Example 2: the rapid road repair mortar comprises the following components in parts by weight: 650 parts of aggregate, 350 parts of sulphoaluminate cement, 30 parts of zeolite powder, 20 parts of silica fume, 25 parts of redispersible latex powder, 10 parts of polycarboxylic acid water reducing agent, 2 parts of hydroxypropyl methyl cellulose, 2.5 parts of sodium gluconate, 2 parts of defoaming agent and 0.6 part of starch ether.
The construction process of the rapid road repair mortar comprises the following steps: when in use, the water addition amount is 17 percent of the total weight of the rapid road repair mortar, and the specific implementation steps are the same as those in example 1.
Example 3: the rapid road repair mortar comprises the following components in parts by weight: 700 parts of aggregate, 400 parts of sulphoaluminate cement, 50 parts of zeolite powder, 30 parts of silica fume, 30 parts of redispersible latex powder, 10 parts of polycarboxylic acid water reducing agent, 3 parts of hydroxypropyl methyl cellulose, 3 parts of sodium gluconate, 2 parts of defoaming agent and 0.8 part of starch ether.
The construction process of the rapid road repair mortar comprises the following steps: when in use, the water addition amount is 20 percent of the total weight of the rapid road repair mortar, and the specific implementation steps are the same as those in example 1.
The curing time, the bonding strength and the stability of the rapid road repair mortar provided by each embodiment and the pavement evenness after the rapid road repair mortar is repaired by the rapid road repair mortar provided by the invention are tested, the bonding strength is subjected to a tensile test at a speed of 3mm/min by using an electronic universal testing machine, the pavement evenness after the rapid road repair mortar is repaired is measured by using a laser section evenness instrument, and various performance test results are shown in table 1.
Table 1 results of performance testing of examples
The embodiments show that various performance indexes of the rapid road repair mortar provided by the invention meet or exceed relevant standards and actual engineering requirements, the rapid road repair mortar has good physical mechanical properties and durability, the compression resistance is improved, the pressure bearing capacity is up to more than 40MPa, the construction process is simple to operate, the rapid road repair mortar can be used after being stirred by adding water on site, the construction is convenient, the strength and the durability of the repaired road surface are ensured, the rapid repair is met, the traffic can be opened after two hours after the repair is finished, and the influence on normal traffic is avoided.
Claims (8)
1. The rapid road repairing mortar is characterized by comprising the following components in parts by weight:
aggregate: 600-700 parts of (A) and (B),
sulphoaluminate cement: 300-400 parts of (A) and (B),
zeolite powder: 30-50 parts of (by weight),
silica fume: 20-30 parts of (by weight),
redispersible latex powder: 20-30 parts of (by weight),
polycarboxylic acid water reducing agent: 5-10 parts of (A) a water-soluble polymer,
hydroxypropyl methylcellulose: 1-3 parts of (A) a solvent,
sodium gluconate: 2-3 parts of (A) a solvent,
defoaming agent: 1-2 parts of (A) a solvent,
starch ether: 0.2 to 0.8 portion.
2. The rapid road repair mortar according to claim 1, which is characterized by comprising the following components in parts by weight:
aggregate: 650 parts of (a) a water-soluble polymer,
sulphoaluminate cement: 350 parts of (a) to (b),
zeolite powder: 30 parts of (a) to (b),
silica fume: 20 parts of (by weight), and mixing the components,
redispersible latex powder: 25 parts of (a) to (b),
polycarboxylic acid water reducing agent: 10 parts of (a) to (b),
hydroxypropyl methylcellulose: 2 parts of (a) to (b),
sodium gluconate: 2.5 parts of (A) a reaction product,
defoaming agent: 2 parts of (a) to (b),
starch ether: 0.6 part.
3. The rapid road repair mortar of claim 1, wherein: the aggregate is composed of coarse aggregate and fine aggregate, the mixing ratio of the coarse aggregate and the fine aggregate is 1:4 by weight, the coarse aggregate is limestone macadam with the thickness of 10-20mm, and the fine aggregate is medium-coarse sand.
4. The rapid road repair mortar of claim 1, wherein: the sulphoaluminate cement is rapid hardening sulphoaluminate cement with the strength grade of 42.5.
5. The rapid road repair mortar of claim 1, wherein: the viscosity of the hydroxypropyl methyl cellulose is 100000mPa & s.
6. The construction process of the rapid road repair mortar according to claim 1, wherein the water addition amount is 15-20% of the total weight of the rapid road repair mortar when in use, and the concrete steps are as follows:
s1: cleaning the road, and cleaning up the floating soil, floating sand and broken stones;
s2: wetting by water, brushing an interface adhesive with the thickness of 0.5-1mm after no clear water exists;
s3: adding water into the rapid road repair mortar, and fully stirring by using an electric drill;
s4: and (4) after the interface adhesive is formed into a film, repairing by using the repairing material in S3, and finishing construction within 30 minutes from the water addition.
7. The construction process of the rapid road repair mortar according to claim 6, which is characterized in that: when in use, the water addition amount is 17 percent of the total weight of the rapid road repair mortar.
8. The construction process of the rapid road repair mortar according to claim 6, wherein the interface adhesive is a cement-based interface adhesive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010744587.2A CN111848066A (en) | 2020-07-29 | 2020-07-29 | Rapid road repairing mortar and construction process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010744587.2A CN111848066A (en) | 2020-07-29 | 2020-07-29 | Rapid road repairing mortar and construction process thereof |
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| CN111848066A true CN111848066A (en) | 2020-10-30 |
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| CN202010744587.2A Pending CN111848066A (en) | 2020-07-29 | 2020-07-29 | Rapid road repairing mortar and construction process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115417611A (en) * | 2022-09-29 | 2022-12-02 | 山东大学 | Preparation of pavement patching material for winter construction by utilizing industrial solid wastes |
| CN116514499A (en) * | 2023-03-10 | 2023-08-01 | 江苏顺丽成建筑新材料有限公司 | High-strength shrinkage-free cement-based grouting material and preparation method thereof |
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| FR2960872A1 (en) * | 2010-06-04 | 2011-12-09 | Saint Gobain Weber | HYDRAULIC BINDER OR MORTAR WITH STABLE VOLUME |
| CN107572981A (en) * | 2017-10-25 | 2018-01-12 | 安徽中铁工程材料科技有限公司 | A kind of concrete repair self-compacting concrete and preparation method thereof |
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2020
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Patent Citations (3)
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| FR2960872A1 (en) * | 2010-06-04 | 2011-12-09 | Saint Gobain Weber | HYDRAULIC BINDER OR MORTAR WITH STABLE VOLUME |
| CN107572981A (en) * | 2017-10-25 | 2018-01-12 | 安徽中铁工程材料科技有限公司 | A kind of concrete repair self-compacting concrete and preparation method thereof |
| CN108546060A (en) * | 2018-06-28 | 2018-09-18 | 北京工业大学 | A kind of repairing high belite sulphoaluminate cement base anti-disturbance concrete and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115417611A (en) * | 2022-09-29 | 2022-12-02 | 山东大学 | Preparation of pavement patching material for winter construction by utilizing industrial solid wastes |
| CN116514499A (en) * | 2023-03-10 | 2023-08-01 | 江苏顺丽成建筑新材料有限公司 | High-strength shrinkage-free cement-based grouting material and preparation method thereof |
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Application publication date: 20201030 |