CN109665763A - A kind of high-early-strength type composite repair mortar - Google Patents
A kind of high-early-strength type composite repair mortar Download PDFInfo
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- CN109665763A CN109665763A CN201910134156.1A CN201910134156A CN109665763A CN 109665763 A CN109665763 A CN 109665763A CN 201910134156 A CN201910134156 A CN 201910134156A CN 109665763 A CN109665763 A CN 109665763A
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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
-
- 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- 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)
- Road Paving Structures (AREA)
Abstract
The invention belongs to building material technical fields, propose a kind of high-early-strength type composite repair mortar, it consists of the following components in percentage by weight: water 5%~10%, cement 20%~30%, silicon ash 1%~5%, flyash 1%~5%, quartz sand 50%~70%, complex accelerator 0.4%~0.5%, water-reducing agent 0.06%~0.1%, rubber powder 1%~5%, assorted fibre 0.06%~0.8%, the complex accelerator is made of component A and B component, the component A is nano-calcium carbonate calcium pyroborate, the B component is the mixture of triisopropanolamine and aluminum sulfate, the quartz sand is by coarse sand, middle sand, fine sand composition, the assorted fibre is made of basalt fibre and polypropylene fibre.The present invention solves mending mortar strength retraction in the prior art, and contract with dry rate is big, the low problem of adhesion strength.
Description
Technical field
The invention belongs to building material technical fields, are related to a kind of high-early-strength type composite repair mortar.
Background technique
Cement concrete has played irreplaceable role, especially as main construction material in China's infrastructure
It is in terms of road construction.Cement concrete pavement is as one of big high grade pavement in China two, carrying energy big by its rigidity
The excellent performances such as power is strong, at low cost, construction is convenient, are used widely in China's road construction.But with the development of society,
Road Transportation Volume sharply increases, and cement concrete pavement is rolled and worn by vehicle for a long time, and road surface occurs in various degree
Damage, especially vehicle heavy duty, overloading frequently occur, more accelerate road damage speed.Therefore, to existing cement
The repairing of concrete road surface becomes a great problem that social relevant departments face.
For the research of Cement Concrete Pavement Reconstruction material, domestic and foreign scholars have carried out a large amount of exploration, and achieve
A large amount of research achievement.Current existing material for road repair is broadly divided into following a few classes: inorganic patching material, organic
Patching material, polymer modified concrete patching material.Inorganic patching material mainly utilizes the such as fast hard sulphur of special cement
Aluminate cement, magnesium phosphate cement and perhafnate cement are mixed special cement and ordinary portland cement again, with
Improve the performance of patching material high-early-strength.But this kind of material causes later strength to be fallen since early strength is developed at a too fast speed
Contracting, has seriously affected the adhesive property between old concrete interface.Organic patching material is by organic matter (pitch, modification
Pitch, epoxy resin, polyurethane glue) cement is substituted as the cementitious material in patching material.Since organic matter itself has
Good adhesive property, therefore it can preferably be bonded together with old concrete.But there are former materials for organic patching material
Expect it is at high cost, it is easy to aging, long term exterior environmental activity easily occur peel phenomenon.Polymer modified concrete is generally divided into two
Kind: 1. polymer impregnated concrete (PIC), i.e., by the polymer impregnated gap to concrete, then it is aggregated make concrete and
Polymer latex is linked to be entirety；2. polymer modified concrete (PMC), i.e., mix polymer in cement hydration process, collectively as
The polymer modified concrete of cementing material.The modified Bond Performance Between Concrete of cement-based powder material is good, High anti bending strength it is excellent
Performance, but its price is high, non-refractory, it is easy to crack.,
Summary of the invention
The present invention proposes a kind of high-early-strength type composite repair mortar, solves mending mortar intensity in the prior art and falls
Contracting, contract with dry rate is big, the low problem of adhesion strength.
The technical proposal of the invention is realized in this way a kind of high-early-strength type composite repair mortar, by following weight percent
The group of ratio is grouped as:
Water 5%~10%, cement 20%~30%, silicon ash 1%~5%, flyash 1%~5%, quartz sand 50%~
70%, complex accelerator 0.4%~0.5%, water-reducing agent 0.06%~0.1%, rubber powder 1%~5%, assorted fibre 0.06%~
0.8%,
The complex accelerator is made of component A and B component, and the component A is nano-calcium carbonate calcium pyroborate, the B component
For the mixture of triisopropanolamine and aluminum sulfate.
As further technical solution, consist of the following components in percentage by weight:
Water 7.25%, cement 22.13%, silicon ash 2.46%, flyash 1.29%, quartz sand 64.72%, complex accelerator
0.44%, water-reducing agent 0.08%, rubber powder 1.55%, assorted fibre 0.07%.
As further technical solution, the quartz sand is made of coarse sand, middle sand, fine sand, the coarse sand, middle sand, thin
The mass ratio of sand is (20~25): (15~25): (15~20), and the partial size of the coarse sand is 2.36~4.75mm, the middle sand
Partial size be 1.18~2.36mm, the partial size of the fine sand is 0.6~1.18mm.
As further technical solution, the weight of the triisopropanolamine accounts for the high-early-strength type composite repair mortar
The 0.005%~0.025% of total amount, the weight of the aluminum sulfate account for the high-early-strength type composite repair mortar total amount
0.1%~0.3%, the weight of the nano-calcium carbonate calcium pyroborate accounts for the 0.1% of the high-early-strength type composite repair mortar total amount
~0.3%.
As further technical solution, the assorted fibre is basalt fibre and polypropylene fibre, the basalt
The weight of fiber accounts for the 0.05%~0.5% of the high-early-strength type composite repair mortar total amount, the weight of the polypropylene fibre
Amount accounts for the 0.01%~0.3% of the high-early-strength type composite repair mortar total amount.
As further technical solution, the water-reducing agent is Polycarboxylic Superplasticizer.
As further technical solution, the polymer dispersion powder is redispersible vinyl acetate/ethylene/copolymer
Rubber powder.
A kind of preparation method of high-early-strength type composite repair mortar, comprising the following steps:
S1, according to a kind of formula of above-mentioned high-early-strength type composite repair mortar, it is spare to weigh each component；
S2, cement, flyash, silicon ash, rubber powder, water-reducing agent, component A and quartz sand are subjected to uniform stirring, obtained dry-mixed
Material；
Assorted fibre is added in S3, the dry blend obtained to step S2, stirs 20~45s, obtains the dry-mixed of doping fiber
Material；
S4, the water that 45~65% formula ratios are added into B component, obtain B component solution after mixing；
S5, the B component solution that step S4 is obtained is added into the dry blend for the doping fiber that step S3 is obtained, quickly stirs
30~45s obtains just mixing；
S6, the water of surplus in formula is slowly added in the first mixing that step S5 is obtained, stirs 20~30s, obtained fast
Hard early-strength composite repair mortar.
Further include step S20 between step S1 and step S2 as further technical solution: flyash machinery is milled
Activation, until 200 mesh of partial size, the flyash after being activated are ultrasonically treated silicon ash, ultrasonic time 1h obtains ultrasound
Silicon ash that treated.
The present invention is using principle and has the beneficial effect that
1, it in the present invention, using the theory of composite material, carries out multicomponent and deploys jointly, first by component A in preparation method
It is dry-mixed with cement, flyash etc., B component solution is being added after assorted fibre is added, is slowly adding water and stirring again later, rather than it is straight
It connects and mixes each group component, the synergistic effect between each component can be given full play to, repaired so that the high-early-strength type of preparation is compound
Stop-off slurry have drying shrinkage it is small, with old concrete interface adhesion is strong, cracking resistance, the excellent performances such as at low cost, effectively improve
The retraction of the conventional repair strength of materials, the bad performance such as contract with dry rate is big, adhesion strength is low.Firstly, being not incorporated into cementitious material fast hard
Cement mainly uses PO42.5 ordinary portland cement, mixes to form ternary gel again with mineral admixture flyash, silicon ash
System, in the case where complex accelerator is cooperateed with the pozzolanic action of mineral admixture and micro-aggregate effect, mortar obtains higher early stage
The intensity and later period does not occur strength retraction；The tightly packed of the different quartz sand of three kinds of particle diameter distributions improves the closely knit of mortar
Property, improve mortar dry shrinkage resistance energy and durability；Osmosis, the water-retaining property of redispersible rubber powder effectively improve mortar with
Adhesive property between old concrete；" the microfibre effect " of redispersible rubber powder and assorted fibre and mineral admixture are filled out
It uses as to use and significantly reduces the contract with dry rate of mortar.
2, in the present invention, complex accelerator is made of component A and B component, and component A is nano-calcium carbonate calcium pyroborate, and B component is
The mixture of triisopropanolamine and aluminum sulfate, wherein aluminum sulfate is soluble easily in water, and a large amount of Tricationic Al is generated after dissolution3+
With dianion SO4 2-, broken original electrochemical equilibrium in solution, increased the ion concentration in solution, and energy and water
The hydrated product calcium hydroxide reaction of mud generates entringite and the higher secondary gypsum of activity, and secondary gypsum is rapidly and clinker mineral
C3A reaction generates acicular ettringite, and a large amount of acicular ettringites form three-dimensional space network skeleton structure, with
C-S-H gelinite be combined with each other, and forms the matrix of denser, improves early strength.In addition, above-mentioned reaction consumes largely
Calcium hydroxide, reduce calcium hydroxide concentration in solution, promote the progress of hydration reaction, and the cement after hydrated cementitious
Slurry belongs to the solid phase dispersion structure with electric double layer, and the ionic effect of sulfuric acid aluminium electrolyte promotes diffusion electric double layer to be compressed,
Interparticle repulsion weakens, so that the C-S-H gelinite coagulation in solution, reduces gel bulk concentration, so acceleration of hydration into
Journey generates a large amount of gelinites.Suitable sodium rice calcium carbonate crystal whisker is uniformly dispersed in cement granules, due to small-size effect,
Microcrystals can be provided for the crystal growth of hydrated product, reduce the nucleation barrier of hydrated product, thus acceleration of hydration product
It generates.Triisopropanolamine can be stabilized in alkaline solution, and can improve C by complexing4The hydration rate of AF,
And can speed up the disintegration and aquation of flyash glass phase, the volcano ash effect of flyash is given full play to, the later period of matrix is improved
Intensity, therefore, three kinds of nano-calcium carbonate calcium pyroborate, triisopropanolamine and aluminum sulfate components act synergistically, and can significantly improve mortar
Early strength.
3, compared with existing patching material, the present invention in powder binding material according to Reactive Powder Concrete configuration
Theory: optimizing the fineness and grain composition of powder body material, improves active component content, and cementitious material is mainly general by PO42.5
Logical portland cement composition, is then mixed the ternary gelling system to be formed again with mineral admixture flyash and silicon ash, due to
Silicon ash fineness is big, and activity is high, can preferably adjust the grain composition of gelling system, improve the activity of cementitious material, to mention
The intensity and density of high cement-based material.
4, in the present invention, its powder fineness and activity is improved by carrying out mechanical activation processing to mineral admixture, is filled
Micro-aggregate effect and the pozzolanic action of mineral admixture are waved in distribution.Mechanical grinding is carried out to flyash, reduces its grain diameter,
Increase its powder fineness, sufficiently discharges the small active particle wrapped up, increase its active particle content.Using ultrasonic treatment to thin
It spends biggish silicon ash and carries out physical dispersion processing, reduce its agglomeration.
5, in the present invention, redispersable latex powder is added in formula, with redispersible, may penetrate into coagulation pedosphere
At face in crack and hole, to form stronger anchorage effect, the adhesion strength of mending mortar, re-dispersible glue powder tool are improved
There is certain water-retaining property, can guarantee that the moisture in the mortar entered in crack or hole will not be absorbed by surrounding matrix, thus
Keep mortar normal hydrated, generate more hydrated products, the mechanical snap enhanced between mending mortar and old concrete is made
With enhancing cementation can play the role of " microfibre " after being dispersed in the rubber powder hardening inside mortar, it is suppressed that
The cracking of mortar；And a large amount of rubber powders are coated on hydrated product surface, hinder the migration of internal water molecule, reduce the dry of mortar
Contracting.
6, in the present invention, fiber is by the polypropylene fibre of low elastic modulus and the basalt fibre of high elastic modulus by one
Certainty ratio blending.The polypropylene fibre of low elastic modulus is light, under identical volume, can obtain more fiber number, thus
Fiber spacing is reduced, according to fiber distance theory, adjacent fiber spacing is smaller, and fibration is stronger, effectively inhibits sand
The early-age crack of slurry reduces the contract with dry rate of mortar.The basalt fibre of high elastic modulus inside mortar in it is three-dimensional disorderly to point
Cloth provides biggish effect of contraction to the mortar after hardening, is effectively reduced stress concentration, improves the anti-drying shrinkage of mortar
Property.
Specific embodiment
Below in conjunction in the embodiment of the present invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Used chemical admixture in following instance: redispersible rubber powder is Shanghai Chen Qi Chemical Industry Science Co., Ltd
Production, the redispersible vinyl acetate/ethylene/copolymer rubber powder using polyvinyl alcohol as protecting colloid；Water-reducing agent is Shanghai
The powder high-efficiency water-reducing agent of poly-carboxylic acid produced by the emperor himself with Chemical Co., Ltd.；Triisopropanolamine causes remote chemical reagent limited by Tianjin
Company's production；Aluminum sulfate is produced by the western Gansu Province chemical plant of Shantou, Guangdong；Nano-calcium carbonate calcium pyroborate is ground by Tianjin recovery fine chemistry industry
Study carefully and is produced.
Embodiment 1
A kind of high-early-strength type composite repair mortar, consists of the following components in percentage by weight:
Water 5%, cement 20%, silicon ash 1%, flyash 2%, quartz sand 70% (coarse sand 25%, middle sand 25%, fine sand
20%), (component A: nano-calcium carbonate calcium pyroborate 0.21%, B component: triisopropanolamine: 0.01% and sulphur of complex accelerator 0.4%
Sour aluminium: 0.22%), water-reducing agent 0.06%, rubber powder 1.48%, (basalt fibre 0.05%, polypropylene are fine for assorted fibre 0.06%
0.01%), the partial size of coarse sand is 2.36~4.75mm to dimension, and the partial size of middle sand is 1.18~2.36mm, the partial size of fine sand is 0.6~
1.18mm。
Preparation method includes the following steps:
S1, according to a kind of formula of above-mentioned high-early-strength type composite repair mortar, it is spare to weigh each component；
S20: flyash machinery is milled and is activated, until 200 mesh of partial size, the flyash after being activated surpass silicon ash
Sonication, ultrasonic time 1h, the silicon ash after being ultrasonically treated；
Flyash after S2, the activation for obtaining cement, step S20, the silicon ash after ultrasonic treatment, rubber powder, water-reducing agent, A
Component and quartz sand carry out uniform stirring, obtain dry blend；
Assorted fibre is added in S3, the dry blend obtained to step S2, stirs 20~45s, obtains the dry-mixed of doping fiber
Material；
S4, the water that 45~65% formula ratios are added into B component, obtain B component solution after mixing；
S5, the B component solution that step S4 is obtained is added into the dry blend for the doping fiber that step S3 is obtained, quickly stirs
30~45s obtains just mixing；
S6, the water of surplus in formula is slowly added in the first mixing that step S5 is obtained, stirs 20~30s, obtained fast
Hard early-strength composite repair mortar.
The test of high-early-strength type composite repair mortar performance obtained by the present embodiment is as shown in table 1:
The high-early-strength type composite repair mortar performance test result that 1 embodiment 1 of table obtains
Embodiment 2
A kind of high-early-strength type composite repair mortar, consists of the following components in percentage by weight:
Water 7.29%, cement 22.25%, silicon ash 2.47%, flyash 1.3%, quartz sand 65.05% (coarse sand:
25.13%；Middle sand: 21.16%；Fine sand 18.76%), (component A: nano-calcium carbonate calcium pyroborate of complex accelerator 0.44%
0.21%, B component: triisopropanolamine 0.01%, aluminum sulfate 0.22%), water-reducing agent 0.08%, rubber powder 1.05%, assorted fibre
The partial size of 0.07% (basalt fibre 0.06%, polypropylene fibre 0.01), coarse sand is 2.36~4.75mm, and the partial size of middle sand is
1.18~2.36mm, the partial size of fine sand are 0.6~1.18mm.
Preparation method includes the following steps:
S1, according to a kind of formula of above-mentioned high-early-strength type composite repair mortar, it is spare to weigh each component；
S20: flyash machinery is milled and is activated, until 200 mesh of partial size, the flyash after being activated surpass silicon ash
Sonication, ultrasonic time 1h, the silicon ash after being ultrasonically treated；
Flyash after S2, the activation for obtaining cement, step S20, the silicon ash after ultrasonic treatment, rubber powder, water-reducing agent, A
Component and quartz sand carry out uniform stirring, obtain dry blend；
Assorted fibre is added in S3, the dry blend obtained to step S2, stirs 30s, obtains the dry blend of doping fiber；
S4, the water that 50% formula ratio is added into B component, obtain B component solution after mixing；
S5, the B component solution that step S4 is obtained is added into the dry blend for the doping fiber that step S3 is obtained, quickly stirs
30s obtains just mixing；
S6, the water of surplus in formula is slowly added in the first mixing that step S5 is obtained, stirs 20s, obtained fast hard early
Strong type composite repair mortar.
The test of high-early-strength type composite repair mortar performance obtained by the present embodiment is as shown in table 2:
The high-early-strength type composite repair mortar performance test result that 2 embodiment 2 of table obtains
Embodiment 3
A kind of high-early-strength type composite repair mortar, consists of the following components in percentage by weight:
Water 6.79%, cement 20.75%, silicon ash 2.31%, flyash 1.21%, quartz sand 67.41% (coarse sand:
26.04%；Middle sand: 21.92%；Fine sand 19.44%), (component A: nano-calcium carbonate calcium pyroborate of complex accelerator 0.42%
0.20%, B component: triisopropanolamine: 0.01% and aluminum sulfate: 0.21%), water-reducing agent 0.07%, rubber powder 0.97% mixes fibre
0.07% (basalt fibre 0.06%, polypropylene fibre 0.01) is tieed up, the partial size of coarse sand is 2.36~4.75mm, the partial size of middle sand
For 1.18~2.36mm, the partial size of fine sand is 0.6~1.18mm.
Preparation method includes the following steps:
S1, according to a kind of formula of above-mentioned high-early-strength type composite repair mortar, it is spare to weigh each component；
S20: flyash machinery is milled and is activated, until 200 mesh of partial size, the flyash after being activated surpass silicon ash
Sonication, ultrasonic time 1h, the silicon ash after being ultrasonically treated；
Flyash after S2, the activation for obtaining cement, step S20, the silicon ash after ultrasonic treatment, rubber powder, water-reducing agent, A
Component and quartz sand carry out uniform stirring, obtain dry blend；
Assorted fibre is added in S3, the dry blend obtained to step S2, stirs 25s, obtains the dry blend of doping fiber；
S4, the water that 55% formula ratio is added into B component, obtain B component solution after mixing；
S5, the B component solution that step S4 is obtained is added into the dry blend for the doping fiber that step S3 is obtained, quickly stirs
45s obtains just mixing；
S6, the water of surplus in formula is slowly added in the first mixing that step S5 is obtained, stirs 30s, obtained fast hard early
Strong type composite repair mortar.
The test of high-early-strength type composite repair mortar performance obtained by the present embodiment is as shown in table 3:
The high-early-strength type composite repair mortar performance test result that 3 embodiment 3 of table obtains
Embodiment 4
A kind of high-early-strength type composite repair mortar, consists of the following components in percentage by weight:
Water 7.85%, cement 23.85%, silicon ash: 2.65%；Flyash: 1.55%；Quartz sand: 62.34% (coarse sand
24.08%, middle sand 20.28%, fine sand 17.98%), complex accelerator 0.48% (component A: nano-calcium carbonate calcium pyroborate 0.23%,
B component: triisopropanolamine 0.01% and aluminum sulfate 0.24%), water-reducing agent 0.08%, rubber powder 1.13%, assorted fibre 0.07%
(basalt fibre 0.06%, polypropylene fibre 0.01%), the partial size of coarse sand are 2.36~4.75mm, and the partial size of middle sand is 1.18
~2.36mm, the partial size of fine sand are 0.6~1.18mm.
Preparation method includes the following steps:
S1, according to a kind of formula of above-mentioned high-early-strength type composite repair mortar, it is spare to weigh each component；
S20: flyash machinery is milled and is activated, until 200 mesh of partial size, the flyash after being activated surpass silicon ash
Sonication, ultrasonic time 1h, the silicon ash after being ultrasonically treated；
Flyash after S2, the activation for obtaining cement, step S20, the silicon ash after ultrasonic treatment, rubber powder, water-reducing agent, A
Component and quartz sand carry out uniform stirring, obtain dry blend；
Assorted fibre is added in S3, the dry blend obtained to step S2, stirs 20~45s, obtains the dry-mixed of doping fiber
Material；
S4, the water that 60% formula ratio is added into B component, obtain B component solution after mixing；
S5, the B component solution that step S4 is obtained is added into the dry blend for the doping fiber that step S3 is obtained, quickly stirs
35s obtains just mixing；
S6, the water of surplus in formula is slowly added in the first mixing that step S5 is obtained, stirs 25s, obtained fast hard early
Strong type composite repair mortar.
The test of high-early-strength type composite repair mortar performance obtained by the present embodiment is as shown in table 4:
The high-early-strength type composite repair mortar performance test result that 4 embodiment 4 of table obtains
Embodiment 5
A kind of high-early-strength type composite repair mortar, consists of the following components in percentage by weight:
Water 7.25%, cement 22.13%, silicon ash 2.46%, flyash 1.29%, 64.72% (coarse sand of quartz sand
25.00%, middle sand 21.05%, fine sand 18.67%), complex accelerator 0.44% (component A: nano-calcium carbonate calcium pyroborate 0.21%,
B component: triisopropanolamine 0.01% and aluminum sulfate 0.22%), water-reducing agent 0.08%, rubber powder 1.56%, assorted fibre 0.07%
(basalt fibre 0.06%, polypropylene fibre 0.01%), the partial size of coarse sand are 2.36~4.75mm, and the partial size of middle sand is 1.18
~2.36mm, the partial size of fine sand are 0.6~1.18mm.
Preparation method includes the following steps:
S1, according to a kind of formula of above-mentioned high-early-strength type composite repair mortar, it is spare to weigh each component；
S20: flyash machinery is milled and is activated, until 200 mesh of partial size, the flyash after being activated surpass silicon ash
Sonication, ultrasonic time 1h, the silicon ash after being ultrasonically treated；
Flyash after S2, the activation for obtaining cement, step S20, the silicon ash after ultrasonic treatment, rubber powder, water-reducing agent, A
Component and quartz sand carry out uniform stirring, obtain dry blend；
Assorted fibre is added in S3, the dry blend obtained to step S2, stirs 20s, obtains the dry blend of doping fiber；
S4, the water that 45% formula ratio is added into B component, obtain B component solution after mixing；
S5, the B component solution that step S4 is obtained is added into the dry blend for the doping fiber that step S3 is obtained, quickly stirs
45s obtains just mixing；
S6, the water of surplus in formula is slowly added in the first mixing that step S5 is obtained, stirs 30s, obtained fast hard early
Strong type composite repair mortar.
The test of high-early-strength type composite repair mortar performance obtained by the present embodiment is as shown in table 5:
The high-early-strength type composite repair mortar performance test result that 5 embodiment 5 of table obtains
Embodiment 6
A kind of high-early-strength type composite repair mortar, consists of the following components in percentage by weight:
Water 7.28%, cement 22.23%, silicon ash 2.47%, flyash 1.3%, quartz sand 65.01% (coarse sand:
25.11%, middle sand: 21.14%, fine sand 18.75%), (component A: nano-calcium carbonate calcium pyroborate of complex accelerator 0.44%
0.21%, B component: triisopropanolamine: 0.01% and aluminum sulfate: 0.22%), water-reducing agent 0.08%, rubber powder 1.04% mixes fibre
0.15% (basalt fibre 0.13%, polypropylene fibre 0.02%) is tieed up, the partial size of coarse sand is 2.36~4.75mm, the grain of middle sand
Diameter is 1.18~2.36mm, and the partial size of fine sand is 0.6~1.18mm.
Preparation method includes the following steps:
S1, according to a kind of formula of above-mentioned high-early-strength type composite repair mortar, it is spare to weigh each component；
S20: flyash machinery is milled and is activated, until 200 mesh of partial size, the flyash after being activated surpass silicon ash
Sonication, ultrasonic time 1h, the silicon ash after being ultrasonically treated；
Flyash after S2, the activation for obtaining cement, step S20, the silicon ash after ultrasonic treatment, rubber powder, water-reducing agent, A
Component and quartz sand carry out uniform stirring, obtain dry blend；
Assorted fibre is added in S3, the dry blend obtained to step S2, stirs 40s, obtains the dry blend of doping fiber；
S4, the water that 65% formula ratio is added into B component, obtain B component solution after mixing；
S5, the B component solution that step S4 is obtained is added into the dry blend for the doping fiber that step S3 is obtained, quickly stirs
35s obtains just mixing；
S6, the water of surplus in formula is slowly added in the first mixing that step S5 is obtained, stirs 20s, obtained fast hard early
Strong type composite repair mortar.
The test of high-early-strength type composite repair mortar performance obtained by the present embodiment is as shown in table 6:
The high-early-strength type composite repair mortar performance test result that 6 embodiment 6 of table obtains
Embodiment 7
A kind of high-early-strength type composite repair mortar, consists of the following components in percentage by weight:
Water 10%, cement 30%, silicon ash 5%, the flyash 1%, (coarse sand: 20% of quartz sand 50%；Middle sand: 15%；Fine sand
15%), (component A: nano-calcium carbonate calcium pyroborate 0.25%, B component: triisopropanolamine: 0.025% and sulphur of complex accelerator 0.5%
Sour aluminium: 0.225%), water-reducing agent 0.1%, rubber powder 2.6%, assorted fibre 0.8% (basalt fibre 0.5%, polypropylene fibre
0.3%), the partial size of coarse sand is 2.36~4.75mm, and the partial size of middle sand is 1.18~2.36mm, the partial size of fine sand is 0.6~
1.18mm。
Preparation method includes the following steps:
S1, according to a kind of formula of above-mentioned high-early-strength type composite repair mortar, it is spare to weigh each component；
S20: flyash machinery is milled and is activated, until 200 mesh of partial size, the flyash after being activated surpass silicon ash
Sonication, ultrasonic time 1h, the silicon ash after being ultrasonically treated；
Flyash after S2, the activation for obtaining cement, step S20, the silicon ash after ultrasonic treatment, rubber powder, water-reducing agent, A
Component and quartz sand carry out uniform stirring, obtain dry blend；
Assorted fibre is added in S3, the dry blend obtained to step S2, stirs 20~45s, obtains the dry-mixed of doping fiber
Material；
S4, the water that 45~65% formula ratios are added into B component, obtain B component solution after mixing；
S5, the B component solution that step S4 is obtained is added into the dry blend for the doping fiber that step S3 is obtained, quickly stirs
30~45s obtains just mixing；
S6, the water of surplus in formula is slowly added in the first mixing that step S5 is obtained, stirs 20~30s, obtained fast
Hard early-strength composite repair mortar.
The test of high-early-strength type composite repair mortar performance obtained by the present embodiment is as shown in table 7:
The high-early-strength type composite repair mortar performance test result that 7 embodiment 7 of table obtains
It can be seen that the resulting high-early-strength type composite repair mortar of the embodiment of the present invention by data in table 1~7: just
It is 18min that the solidifying time is most short, and final setting time up to 210min, 8h flexural strength have been up to 4.5MPa, compression strength
30.5MPa is reached, has reached 1.6MPa with the bond strength of former concrete, 3 days contract with dry rate most great talent is 0.024%, is said
Bright high-early-strength type composite repair mortar of the invention fastly firmly without rapid hardening, early strength is high, adhesive property is good, dry shrinkage resistance energy
By force.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of high-early-strength type composite repair mortar, which is characterized in that consist of the following components in percentage by weight:
Water 5%~10%, cement 20%~30%, silicon ash 1%~5%, flyash 1%~5%, quartz sand 50%~70%,
Complex accelerator 0.4%~0.5%, water-reducing agent 0.06%~0.1%, rubber powder 1%~5%, assorted fibre 0.06%~
0.8%,
The complex accelerator is made of component A and B component, and the component A is nano-calcium carbonate calcium pyroborate, and the B component is three
The mixture of isopropanolamine and aluminum sulfate.
2. a kind of high-early-strength type composite repair mortar according to claim 1, which is characterized in that by following weight percent
The group of ratio is grouped as:
Water 7.25%, cement 22.13%, silicon ash 2.46%, flyash 1.29%, quartz sand 64.72%, complex accelerator
0.44%, water-reducing agent 0.08%, rubber powder 1.55%, assorted fibre 0.07%.
3. a kind of high-early-strength type composite repair mortar according to claim 1, which is characterized in that the quartz sand is by thick
Sand, middle sand, fine sand composition, the coarse sand, middle sand, fine sand mass ratio be (20~25): (15~25): (15~20), it is described
The partial size of coarse sand is 2.36~4.75mm, and the partial size of the middle sand is 1.18~2.36mm, the partial size of the fine sand is 0.6~
1.18mm。
4. a kind of high-early-strength type composite repair mortar according to claim 1, which is characterized in that the triisopropanolamine
Weight account for the 0.005%~0.025% of the high-early-strength type composite repair mortar total amount, the weight of the aluminum sulfate accounts for institute
The 0.1%~0.3% of high-early-strength type composite repair mortar total amount is stated, the weight of the nano-calcium carbonate calcium pyroborate accounts for described fast hard
The 0.1%~0.3% of early-strength composite repair mortar total amount.
5. a kind of high-early-strength type composite repair mortar according to claim 1, which is characterized in that the assorted fibre is
Basalt fibre and polypropylene fibre, the weight of the basalt fibre account for the high-early-strength type composite repair mortar total amount
0.05%~0.5%, the weight of the polypropylene fibre account for the high-early-strength type composite repair mortar total amount 0.01%~
0.3%.
6. a kind of high-early-strength type composite repair mortar according to claim 1, which is characterized in that the water-reducing agent is poly-
Carboxylic acid analog high efficiency water reducing agent.
7. a kind of high-early-strength type composite repair mortar according to claim 1, which is characterized in that the dispersible latex
Powder is redispersible vinyl acetate/ethylene/copolymer rubber powder.
8. a kind of preparation method of high-early-strength type composite repair mortar, which comprises the following steps:
S1, according to a kind of formula of high-early-strength type composite repair mortar described in claim 1~7 any one, weigh each
A component is spare；
S2, cement, flyash, silicon ash, rubber powder, water-reducing agent, component A and quartz sand are subjected to uniform stirring, obtain dry blend；
Assorted fibre is added in S3, the dry blend obtained to step S2, stirs 20~45s, obtains the dry blend of doping fiber；
S4, the water that 45~65% formula ratios are added into B component, obtain B component solution after mixing；
S5, the obtained B component solution of step S4 is added into the dry blend for the doping fiber that step S3 is obtained, quickly stir 30~
45s obtains just mixing；
S6, the water of surplus in formula is slowly added in the first mixing that step S5 is obtained, stirs 20~30s, obtained fast hard early
Strong type composite repair mortar.
9. a kind of preparation method of high-early-strength type composite repair mortar according to claim 8, which is characterized in that step
Further include step S20 between S1 and step S2: flyash machinery being milled and is activated, until 200 mesh of partial size, the fine coal after being activated
Ash is ultrasonically treated silicon ash, ultrasonic time 1h, the silicon ash after being ultrasonically treated.
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