CN108383456B - A kind of cracking resistance, durable cement mortar and preparation method thereof - Google Patents
A kind of cracking resistance, durable cement mortar and preparation method thereof Download PDFInfo
- Publication number
- CN108383456B CN108383456B CN201810396571.XA CN201810396571A CN108383456B CN 108383456 B CN108383456 B CN 108383456B CN 201810396571 A CN201810396571 A CN 201810396571A CN 108383456 B CN108383456 B CN 108383456B
- Authority
- CN
- China
- Prior art keywords
- parts
- powder
- cement
- water
- slurry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant 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
Abstract
The present invention provides a kind of cracking resistances, durable cement mortar, it based on parts by weight include: 90-150 parts of cement, 50-90 parts of sand, 5-20 parts of building solid castoff, 10-50 parts of industrial solid castoff, 1-8 parts of hydroxypropyl methyl cellulose, 5-15 parts of perlite, 5-20 parts of kaolin, 1-10 parts of filler, 1-5 parts of thickener, 1-5 parts of redispersable latex powder, 1-6 parts of water-reducing agent, 1-6 parts and water 100-200 parts of defoaming agent；The present invention is raw material using building castoff and industrial solid castoff, not only realize resource circulation utilization, reduce due to waste accumulation bring pollution, and intensity and mechanical property that waste and old fibre substantially increases cement slurry as the raw material of cement slurry is used in the present invention, and the mass ratio of each component is controlled during the preparation process, making the cement slurry of preparation has excellent consistency and delamination degree, and the compression strength and caking property of cement mortar can be improved, so that reduce cement mortar the phenomenon that good hollowing in crack occurs in use.
Description
Technical field
The present invention relates to building materials fields, and in particular to a kind of environment-friendly type cracking resistance, durable cement mortar and preparation method thereof.
Background technique
Cement is one of most important construction material, is widely used in industrial civil building, road, water conservancy and national defence work
Journey, key property are to have plasticity after suitable quantity of water is added, and can not only harden, can also harden in water in air.
Cement mortar is the mixture of cement, sand and water, and in construction projects, there are two types of the normal usages of cement mortar.First is that with
Masonry in basis and wall, which is used as the adhesive of blocky building material, for example builds rubble, common brick cement
Mortar；Second is that for indoor exterior rendering.That there are tensile strength is low for present conventional cement mortar, be easily cracked, waterproofness is poor, cohesive force
It is small, drug resistance conduct is bad, not wear-resisting, the not defect substantially such as cracking resistance, be no longer satisfied present requirement, cement base
It is common be ubiquitous that the crackle of mortar, crack, which are led to the problem of,.For example exterior wall cement mortar is chronically exposed in air,
Often because of the variation expansion or shrinkage of humidity, humidity deformation is related with contract with dry rate because of the change of moisture content of cement mortar.Cement bonded sand
Slurry crackle Producing reason have very much, except construction, proportion, sorting and in terms of specification, it is perfect in addition to, conventional cement bonded sand
Slurry, in masonry and plastering, is containing a large amount of hole since it is internal for light wall material, be easy to masonry mortar or
Water absorbs in decorative mortar, so that water retentivity of mortar be made to reduce, causes the workability of mortar to be deteriorated, while these light weight walls
Contraction distortion is bigger in use for body material, is easy to make the mortar of plastering to occur cracking and hollowing, to influence to build
The appearance and durability of object, thus the effective Prevention method that can be taken from cement mortar itself is needed to improve its quality and property
Matter reduces the cup shake of mortar, reduces shrinkage stress, improves the crack resistance and durability of mortar.
In order to solve the problems, such as that existing cement mortar crack resistance is poor, disclosed in Chinese patent application 2014101339037
A kind of cracking-resistant cement mortar, raw material composition and content are as follows: 35-40 parts of cement；15-17 parts of perlite；Hard polyurethane foam particle
7-10 parts；8-10 parts of aqueous epoxy emulsion；14-20 parts of slag powders；5-7 parts of cement waterproof agent；4-7 parts of plasticizing powder；Curing agent 3-
5 parts；25-45 parts of water.The effect being finally reached is so that cement mortar is had excellent cracking resistance, but remembered from its specification
It is difficult to find out that the cement mortar can effectively improve cracking resistance in the content of load
In order to solve the problems, such as that existing cement mortar durability is poor, disclosed in Chinese patent application 2016105162656
A kind of anti-aging cement mortar, raw material composition and content are as follows: 2-4 parts of PP fiber, 26-36 parts of cement, polyacrylamide
0.8-1.5 parts, 2-4 parts of sulfonated-pheno-formoldehyde resin, 1-2 parts of antifreezing agent, 8-11 parts of tricalcium silicate, 1-4 parts of turpentine oil, dicalcium silicate
6-9 parts, 5-7 parts of borneol, 4-8 parts of thermoplastic elastomer (TPE), 9-15 parts of epoxy emulsion, 3-4 parts of hydrophober, 5-7 parts of inorganic gel, boron
6-9 parts of sand, 11-13 parts of magnesia, 5-8 parts of diatomite, 3-5 parts of calcium chloride.The effect being finally reached is to have cement mortar
Excellent anti-aging property, has effects that resistance to ozone, oxygen, light and weathering aging, but the content documented by its specification
In be difficult to find out that the cement mortar can effectively improve anti-aging property.
Since existing cement mortar is easy to appear cracking and hollowing, and the durability of the cement mortar produced is poor, so
A large amount of Solid construction waste will be generated during building maintenance, Solid construction waste quantity is gradually increased,
Serious pollution is brought to environment, in order to reduce pollution of the Solid construction waste accumulation to environment, protects environment, the industry is anxious
It need to prepare that a kind of cracking resistance is good and the cement mortar of excellent in te pins of durability.
Summary of the invention
To solve the above-mentioned problems, the present invention is intended to provide a kind of cracking resistance is good, the strong cement mortar of durability and its
Preparation method, cement mortar provided by the invention have good binding performance, can reduce hollowing with attachment perfect combination
Generation；The cement mortar drying shrinkage is small, is capable of the generation of effective Crack prevention；And the present invention is disclosed using building
Solid waste mortar and industrial solid castoff are raw material, utilize waste rationally, not only protect environment, also protect
Resource circulation utilization is demonstrate,proved.
On the one hand, the present invention provides a kind of cracking resistance, durable cement mortar, the raw materials including following parts by weight: cement
90-150 parts, 50-90 parts of sand, 5-20 parts of building solid castoff, 10-50 parts of industrial solid castoff, hydroxypropyl methyl fiber
It is 1-8 parts plain, 5-15 parts of perlite, 5-20 parts of kaolin, 1-10 parts of filler, 1-5 parts of thickener, redispersable latex powder 1-5
Part, 1-6 parts of water-reducing agent, 1-6 parts and water 100-200 parts of defoaming agent.
Preferably, the raw material including following parts by weight: above-mentioned cement mortar 100-140 parts of cement, 60-80 parts of sand, is built
Build 10-15 parts of solid waste, 20-40 parts of industrial solid castoff, 2-6 parts of hydroxypropyl methyl cellulose, 8-12 parts of perlite,
10-18 parts of kaolin, 2-8 parts of filler, 4 parts of thickener 2-, 2-4 parts of redispersable latex powder, 2-5 parts of water-reducing agent, defoaming agent
2-5 parts and water 120-180 parts.
It is further preferred that above-mentioned cement mortar, the raw material including following parts by weight: 110-130 parts of cement, sand 65-75
Part, 12-14 parts of building solid castoff, 25-35 parts of industrial solid castoff, 3-5 parts of hydroxypropyl methyl cellulose, perlite 9-
11 parts, 12-16 parts of kaolin, 3-4 parts of thickener, 3-4 parts of redispersable latex powder, 3-5 parts of water-reducing agent, disappear by 3-7 parts of filler
3-4 parts and 170 parts of water 130- of infusion.
It is further preferred that above-mentioned cement mortar, the raw material including following parts by weight: 120-130 parts of cement, sand 70-
75 parts, 13-14 parts of building solid castoff, 30-35 parts of industrial solid castoff, 3-4 parts of hydroxypropyl methyl cellulose, perlite
10-11 parts, 14-16 parts of kaolin, 5-7 parts of filler, 3-4 parts of thickener, 3-4 parts of redispersable latex powder, water-reducing agent 4-5
Part, 3-4 parts and water 150-170 parts of defoaming agent.
In a specific embodiment, above-mentioned cement mortar, the raw material including following parts by weight: 120 parts of cement, sand
80 parts, 15 parts of building solid castoff, 30 parts of industrial solid castoff, 3 parts of hydroxypropyl methyl cellulose, 10 parts of perlite, height
15 parts of ridge soil, 6 parts of filler, 3 parts of thickener, 3 parts of redispersable latex powder, 3 parts of water-reducing agent, 3 parts and 160 parts of water of defoaming agent.
In another embodiment, above-mentioned cement mortar, the raw material including following parts by weight: 100 parts of cement,
60 parts of sand, 10 parts of building solid castoff, 40 parts of industrial solid castoff, 5 parts of hydroxypropyl methyl cellulose, 12 parts of perlite,
18 parts of kaolin, 5 parts of filler, 2 parts of thickener, 2 parts of redispersable latex powder, 5 parts of water-reducing agent, 5 parts of defoaming agent and water 120
Part.
The cement is conventional portland cement.
The sand is middle sand.
The building solid castoff is construction waste solid cement, waste mining rock or concrete debris.
The industrial solid castoff is one or more of Iron-ore Slag, steel slag, flue dust and plastic optical fibre；
The plastic optical fibre is waste plastic lawn or Polywoven Bag.
The filler is kaolin, diatomite, talcum powder, graphite, carbon black, alumina powder, glass powder, flake asbestos, cloud
One or more of female powder, silica flour, carbon fiber and diamond dust；
Preferably kaolin, diatomite, talcum powder, alumina powder, glass powder, flake asbestos, mica powder, silica flour, carbon fiber
One or more of peacekeeping diamond dust；
Further preferably in diatomite, talcum powder, alumina powder, glass powder, flake asbestos, mica powder, silica flour and diamond dust
One or more；
Further preferably one or more of diatomite, talcum powder, alumina powder, glass powder and silica flour.
The thickener is thickening agent, water-retaining agent and part mineral admixture composition；The thickening agent be paraffin,
One or more of wax, petrolatum and silica gel；The water-retaining agent be polyacrylamide, Sodium Polyacrylate, polyacrylic acid potassium and
One of ammonium polyacrylate；The part mineral are iron ore, magnesium ore powder, calcium carbonate powder and sodium metasilicate powder
One or more of；The mass ratio of thickening agent, water-retaining agent and minerals is 1-10: 1-10: 1-5 in the thickener.
The mass ratio of the filler and thickener is 1-2: 1.
The polymer dispersion powder is vinylacetate and ethylene copolymer rubber powder, ethylene and vinyl chloride and moon silicic acid vinyl acetate
Ternary polymerization rubber powder, vinylacetate and higher aliphatic vinyl acetate copolymerization rubber powder, acrylate and styrene copolymerized rubber powder, vinegar
Vinyl acetate homopolymerization rubber powder and one of styrene and butadiene copolymer rubber powder；
Preferably, above-mentioned polymer dispersion powder is that vinylacetate and ethylene copolymer rubber powder, acrylate and styrene are total
Poly- rubber powder, vinylacetate homopolymerization rubber powder and one of styrene and butadiene copolymer rubber powder；
It is further preferred that above-mentioned polymer dispersion powder is vinylacetate and ethylene copolymer rubber powder and acrylate and benzene
One of ethylene copolymer rubber powder.
The water-reducing agent is sodium lignin sulfonate, triethanolamine or acrylic acid；Preferably sodium lignin sulfonate.
The defoaming agent is polyoxyethylene polyoxypropylene pentaerythrite ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, polyoxypropylene
One or more of glycerin ether, polyoxyethylene polyoxypropylene glycerin ether and dimethyl silicone polymer；
Preferably, above-mentioned defoaming agent is polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether, polyoxypropylene polyoxy second
One or more of alkene glycerin ether and dimethyl silicone polymer；
It is further preferred that above-mentioned defoaming agent is polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether and poly- diformazan
One or more of radical siloxane；
It is further preferred that above-mentioned defoaming agent is the polyoxyethylene polyoxy propyl alcohol amidogen ether and poly- diformazan that mass ratio is 1: 1
Radical siloxane.
The mass ratio of the water-reducing agent and defoaming agent is 1: 1.
On the other hand, the present invention also provides a kind of preparation method of above-mentioned cement mortar, it is specific the preparation method comprises the following steps:
(1) slurry A is prepared
It is put into melting furnace firstly, weighing industrial solid castoff, controls ignition temperature, keep industrial solid castoff molten
At slurry, then slurry is imported in fiberizer, inorfil is generated, then pours into dispersion machine again, length needed for being formed
Fiber mixes after taking-up with hydroxypropyl methyl cellulose, and water is added, and waste slurry A is obtained after being uniformly dispersed, spare；
(2) slurry B is prepared
Cement, sand, building solid castoff powder, perlite, kaolin, filler and thickener is weighed according to the proportion to add
Enter in blender, and slurry A obtained in step (1) is added, water is then added, 30- is stirred with the speed of 400-800r/min
60min obtains slurry B after mixing evenly；
(3) cement mortar is prepared
Redispersable latex powder, water-reducing agent and defoaming agent are added in the slurry B that step (2) obtains, water is added in 40-
With the speed of 80-150r/min under conditions of 80 DEG C, 1-3h is stirred to get the cement slurry is arrived.
Ignition temperature described in above-mentioned steps (1) is 800-1800 DEG C, and the fibre length is 1- 3cm.
Building solid castoff powder described in above-mentioned steps (2) be building solid castoff is successively crushed,
The powder for crushing, obtaining after sieving, powder diameter are 20-80 mesh.
The invention has the benefit that
(1) present invention is raw material using building castoff and industrial solid castoff, not only realizes resource circulation utilization,
Reduce due to waste accumulation bring pollution, and it is big as the raw material of cement slurry that waste and old fibre is used in the present invention
The intensity and mechanical property of cement slurry are improved greatly, are defined the length of plastic optical fibre in the present invention, are the cement slurries prepared
Material has good insulation and sound absorption qualities.
(2) it is 1-10: 1-10: 1-5 thickening agent, water-retaining agent and minerals that the thickener used in the present invention, which is mass ratio,
It is prepared, there is good thickening effect, and the mass ratio of filler and thickener is 1-2: 1 in the present invention, it can be with
Well adjust cement slurry viscosity, make preparation cement slurry have good binding force, can well with building
Ontology combines, and reduces the generation of hollowing.
(3) cement slurry prepared by the present invention can be very good in conjunction with coating, not need to smear other in use process
Adhesive ensures that coating is not fallen off for a long time.
(4) cement slurry prepared in the present invention has good anti-aging property, passes through the various of control cement slurry
Concrete component and content have good corrosion resistance the cement slurry tool of preparation, place it in adverse circumstances for a long time
It is not in apparent variation.
(5) present invention defines that the mass ratio of water-reducing agent and defoaming agent is 1: 1 during preparing cement slurry, meaning
The mass ratio that other places discovery changes the two can also reduce cement mortar drying shrinkage to a certain extent, can effectively keep away
Exempt from the generation of crackle.
(6) present invention controls temperature by adjusting process conditions, changes charging sequence, effectively improves the resistance to of cement mortar
Long property, improves product quality, meets the requirement of architectural engineering modernization development.
Specific embodiment
A kind of cracking resistance of embodiment 1, durable cement mortar
Formula: based on parts by weight, including following components:
90 parts of portland cement, 50 parts of middle sand, 5 parts of construction waste solid cement, 3 parts of Iron-ore Slag, 3 parts of steel slag, plastics are fine
5 parts of dimension, 1 part of hydroxypropyl methyl cellulose, 5 parts of perlite, 5 parts of kaolin, 3 parts of diatomite, 1 part of paraffin, polyacrylamide 1
Part, 1 part of iron ore, vinylacetate with 1 part of ethylene copolymer rubber powder, 1 part of sodium lignin sulfonate, polyoxyethylene polyoxy propyl alcohol
0.5 part of amidogen ether, 0.5 part and 100 parts of water of dimethyl silicone polymer.
Preparation method:
(1) slurry A is prepared
It is put into melting furnace firstly, weighing plastic optical fibre, scum and steel slag, control ignition temperature is 1000 DEG C, makes work
Then industry solid waste melt into slurry imports slurry in fiberizer, generate inorfil, then pour into dispersion machine again,
Length needed for being formed is the fiber of 1cm, mixes after taking-up with hydroxypropyl methyl cellulose, and water is added, obtains after being uniformly dispersed
Waste slurry A, it is spare；
(2) slurry B is prepared
Weigh according to the proportion cement, sand, construction waste solid cement, perlite, hydroxypropyl methyl cellulose, kaolin,
Diatomite and paraffin, polyacrylamide and iron ore are added in blender, and slurry A obtained in step (1) is added,
Then water is added, 60min is stirred with the speed of 400r/min, obtains slurry B after mixing evenly；
(3) cement mortar is prepared
By vinylacetate and ethylene copolymer rubber powder, sodium lignin sulfonate, polyoxyethylene polyoxy propyl alcohol amidogen ether and poly- diformazan
Radical siloxane is added in the slurry B that step (2) obtains, and water is added under conditions of 40 DEG C with the speed of 80r/min, stirring
3h to get arrive the cement slurry.
Manufactured powder after being successively crushed construction waste solid cement in step (2), crush, be sieved, powder grain
Diameter is 30 mesh.
A kind of cracking resistance of embodiment 2, durable cement mortar
Formula: based on parts by weight, including following components:
100 parts of portland cement, 60 parts of middle sand, 6 parts of construction waste solid cement, 5 parts of waste mining rock, 4 parts of Iron-ore Slag, steel
3 parts of slag, 6 parts of plastic optical fibre, 2 parts of hydroxypropyl methyl cellulose, 6 parts of perlite, 6 parts of kaolin, 5 parts of talcum powder, petroleum ester 2
Part, 2 parts of polyacrylamide, 1 part of calcium carbonate powder, vinylacetate with 2 parts of ethylene copolymer rubber powder, 2 parts of sodium lignin sulfonate, gather
1 part of amidogen ether of ethylene oxide polyoxy propyl alcohol, 1 part and 100 parts of water of dimethyl silicone polymer.
Preparation method:
(1) slurry A is prepared
It is put into melting furnace firstly, weighing plastic optical fibre, scum and steel slag, control ignition temperature is 1200 DEG C, makes work
Then industry solid waste melt into slurry imports slurry in fiberizer, generate inorfil, then pour into dispersion machine again,
Length needed for being formed is the fiber of 2cm, mixes after taking-up with hydroxypropyl methyl cellulose, and water is added, obtains after being uniformly dispersed
Waste slurry A, it is spare；
(2) slurry B is prepared
Cement, sand, construction waste solid cement, waste mining rock, perlite, hydroxypropyl methyl fiber are weighed according to the proportion
Element, kaolin, talcum powder and petroleum ester, polyacrylamide and calcium carbonate powder are added in blender, and are added in step (1) and obtain
The slurry A arrived, is then added water, stirs 40min with the speed of 600r/min, obtains slurry B after mixing evenly；
(3) cement mortar is prepared
By vinylacetate and ethylene copolymer rubber powder, sodium lignin sulfonate, polyoxyethylene polyoxy propyl alcohol amidogen ether and poly- diformazan
Radical siloxane is added in the slurry B that step (2) obtains, and water is added under conditions of 50 DEG C with the speed of 100r/min, stirring
2.5h to get arrive the cement slurry.
Construction waste solid cement and waste mining rock in step (2) are successively crushed, crushed, be sieved after powder is made
End, powder diameter are 40 mesh.
A kind of cracking resistance of embodiment 3, durable cement mortar
Formula: based on parts by weight, including following components:
110 parts of portland cement, 70 parts of middle sand, 8 parts of concrete debris, 10 parts of waste mining rock, 4 parts of Iron-ore Slag, flue
Ash 6,8 parts of plastic optical fibre, 3 parts of hydroxypropyl methyl cellulose, 8 parts of perlite, 8 parts of kaolin, 6 parts of talcum powder, 2 parts of petroleum ester,
2 parts of Sodium Polyacrylate, 1 part of calcium carbonate powder, 3 parts of acrylate and styrene copolymerized rubber powder, 3 parts of sodium lignin sulfonate, polyoxy
2 parts of amidogen ether of ethylene polyoxy propyl alcohol, 2 parts and 150 parts of water of dimethyl silicone polymer.
Preparation method: in addition to being formulated difference, other are same as Example 2.
A kind of cracking resistance of embodiment 4, durable cement mortar
Formula: based on parts by weight, including following components:
120 parts of portland cement, 80 parts of middle sand, 10 parts of waste mining rock, 5 parts of Iron-ore Slag, 5 parts of flue dust, plastic optical fibre 8
Part, 4 parts of hydroxypropyl methyl cellulose, 9 parts of perlite, 9 parts of kaolin, 5 parts of talcum powder, 3 parts of glass powder, 1 part of paraffin, polypropylene
2 parts of sour sodium, 2 parts of calcium carbonate powder, 4 parts of acrylate and styrene copolymerized rubber powder, 4 parts of sodium lignin sulfonate, polyoxyethylene is poly-
3 parts of oxygen propyl alcohol amidogen ether, 3 parts and 150 parts of water of dimethyl silicone polymer.
Preparation method: in addition to being formulated difference, other are same as Example 2.
A kind of cracking resistance of embodiment 5, durable cement mortar
Formula: based on parts by weight, including following components:
130 parts of portland cement, 60 parts of middle sand, 15 parts of waste mining rock, 6 parts of Iron-ore Slag, 4 parts of flue dust, plastic optical fibre 12
Part, 5 parts of hydroxypropyl methyl cellulose, 10 parts of perlite, 10 parts of kaolin, 2 parts of glass powder, 2 parts of paraffin, gather by 6 parts of alumina powder
2 parts of acrylic amine, 1 part of calcium carbonate powder, styrene with 3 parts of butadiene copolymer rubber powder, 4 parts of sodium lignin sulfonate, polyoxyethylene
4 parts and 150 parts of water of polyoxy propyl alcohol amidogen ether.
Preparation method:
(1) slurry A is prepared
It is put into melting furnace firstly, weighing plastic optical fibre, scum and flue dust, control ignition temperature is 1500 DEG C, is made
Then industrial solid castoff melt into slurry imports slurry in fiberizer, generate inorfil, then pour into dispersion machine again
In, length needed for being formed is the fiber of 3cm, it is mixed after taking-up with hydroxypropyl methyl cellulose, and water is added, after being uniformly dispersed
It is spare to waste slurry A；
(2) slurry B is prepared
Weigh cement, sand, waste mining rock according to the proportion, perlite, hydroxypropyl methyl cellulose, kaolin, alumina powder,
Glass powder, paraffin, poly amic acid and calcium carbonate powder are added in blender, and slurry A obtained in step (1) is added, so
After water is added, 50min is stirred with the speed of 500r/min, obtains slurry B after mixing evenly；
(3) cement mortar is prepared
Styrene and butadiene copolymer rubber powder, sodium lignin sulfonate and polyoxyethylene polyoxy propyl alcohol amidogen ether are added to step
(2) in the slurry B obtained, water is added under conditions of 60 DEG C with the speed of 120r/min, stirs 2h to get the cement is arrived
Slurry.
Waste mining rock in step (2) is successively crushed, is crushed, be sieved after be made powder, powder diameter is 50 mesh.
A kind of cracking resistance of embodiment 6, durable cement mortar
Formula: based on parts by weight, including following components:
140 parts of portland cement, 70 parts of middle sand, 10 parts of construction waste solid cement, 10 parts of concrete debris, iron ore
8 parts of slag, 6 parts of flue dust, 15 parts of plastic optical fibre, 6 parts of hydroxypropyl methyl cellulose, 12 parts of perlite, 10 parts of kaolin, diatomite
5 parts, 5 parts of silica flour, 2 parts of paraffin, 2 parts of poly amic acid, 1 part of sodium metasilicate powder, vinylacetate and ethylene copolymer rubber powder 4
Part, 4 parts of sodium lignin sulfonate, 4 parts and 150 parts of water of polyoxyethylene polyoxy propyl alcohol amidogen ether.
Preparation method: in addition to being formulated difference, other steps and operation are same as Example 5.
A kind of cracking resistance of embodiment 7, durable cement mortar
Formula: based on parts by weight, including following components:
150 parts of portland cement, 80 parts of middle sand, 8 parts of construction waste solid cement, 3 parts of waste mining rock, concrete debris
9 parts, 10 parts of Iron-ore Slag, 8 parts of flue dust, 18 parts of plastic optical fibre, 8 parts of hydroxypropyl methyl cellulose, 15 parts of perlite, kaolin 18
Part, 6 parts of diatomite, 4 parts of silica flour, 2 parts of silica gel, 2 parts of polyacrylamide, 1 part of sodium metasilicate powder, acrylate and styrene
5 parts of rubber powder of copolymerization, 5 parts of sodium lignin sulfonate, 3 parts of amidogen ether of polyoxyethylene polyoxy propyl alcohol, 3 parts of dimethyl silicone polymer and water 200
Part.
Preparation method:
(1) slurry A is prepared
It is put into melting furnace firstly, weighing plastic optical fibre, Iron-ore Slag and flue dust, control ignition temperature is 1800 DEG C,
Make industrial solid castoff melt into slurry, then import slurry in fiberizer, generates inorfil, then pour into dispersion machine again
In, length needed for being formed is the fiber of 2cm, it is mixed after taking-up with hydroxypropyl methyl cellulose, and water is added, after being uniformly dispersed
It is spare to waste slurry A；
(2) slurry B is prepared
Cement, sand, construction waste solid cement, waste mining rock, concrete debris, perlite, hydroxyl are weighed according to the proportion
Blender is added in propyl methocel, kaolin, alumina powder, glass powder, paraffin, poly amic acid and calcium carbonate powder
In, and slurry A obtained in step (1) is added, water is then added, 30min is stirred with the speed of 800r/min, after mixing evenly
Obtain slurry B；
(3) cement mortar is prepared
By acrylate and styrene copolymerized rubber powder, sodium lignin sulfonate, polyoxyethylene polyoxy propyl alcohol amidogen ether and poly- diformazan
Radical siloxane is added in the slurry B that step (2) obtains, and water is added under conditions of 80 DEG C with the speed of 100r/min, stirring
3h to get arrive the cement slurry.
By construction waste solid cement in step (2), waste mining rock and concrete debris be successively crushed, crushed,
Powder is made after sieving, powder diameter is 60 mesh.
A kind of cracking resistance of embodiment 8, durable cement mortar
Formula: based on parts by weight, including following components:
120 parts of portland cement, 90 parts of middle sand, 5 parts of waste mining rock, 10 parts of concrete debris, 10 parts of flue dust, plastics
15 parts of fiber, 6 parts of hydroxypropyl methyl cellulose, 12 parts of perlite, 20 parts of kaolin, 5 parts of glass powder, 5 parts of silica flour, paraffin 1
Part, 1 part of polyacrylamide, 1 part of sodium metasilicate powder, ethylene and 5 parts of vinyl chloride and vinyl laurate ternary polymerization rubber powder, propylene
5 parts of acid, 2.5 parts of amidogen ether of polyoxyethylene polyoxy propyl alcohol, 2.5 parts and 200 parts of water of dimethyl silicone polymer.
Preparation method: in addition to being formulated difference, other steps and operation are same as Example 7.
A kind of cracking resistance of embodiment 9, durable cement mortar
Formula: based on parts by weight, including following components:
150 parts of portland cement, 80 parts of middle sand, 8 parts of waste mining rock, 8 parts of concrete debris, 12 parts of flue dust, plastics
10 parts of fiber, 5 parts of hydroxypropyl methyl cellulose, 15 parts of perlite, 20 parts of kaolin, 5 parts of graphite, 5 parts of carbon black, 1 part of paraffin,
1 part of polyacrylamide, 1 part of sodium metasilicate powder, vinylacetate and higher aliphatic vinyl acetate are copolymerized 5 parts of rubber powder, acrylic acid 5
Part, 5 parts and 200 parts of water of polypropylene glycerol aether.
Preparation method: in addition to being formulated difference, other steps and operation are same as Example 7.
A kind of cracking resistance of embodiment 10, durable cement mortar
Formula: based on parts by weight, including following components:
140 parts of portland cement, 80 parts of middle sand, 10 parts of construction waste solid cement, 5 parts of waste mining rock, concrete is discarded
5 parts of object, 12 parts of Iron-ore Slag, 10 parts of plastic optical fibre, 6 parts of hydroxypropyl methyl cellulose, 12 parts of perlite, 18 parts of kaolin, asbestos
5 parts of powder, 5 parts of carbon black, 2 parts of ceresine, 1 part of polyacrylamide, 1 part of sodium metasilicate powder, vinylacetate and ethylene copolymer rubber powder 5
Part, 5 parts of triethanolamine, 5 parts and 200 parts of water of polyoxyethylene polyoxy propyl alcohol amidogen ether.
Preparation method: in addition to being formulated difference, other steps and operation are same as Example 7.
A kind of cement slurry of comparative example 1
Formula: the difference with embodiment 3 is: not conforming to plastic optical fibre, other compositions are same as Example 3 with content.
Preparation method: same as Example 3.
A kind of cement slurry of comparative example 2
Formula: the difference with embodiment 3 is: used plastic optical fibre length is 0.5cm, other compositions and content with
Embodiment 3 is identical.
Preparation method: same as Example 3.
A kind of cement slurry of comparative example 3
Formula: the difference with embodiment 3 is: used plastic optical fibre 5cm, other compositions and content and embodiment 3
It is identical.
Preparation method: same as Example 3.
A kind of cement slurry of comparative example 4
Formula: the difference from example 2 is that: be free of hydroxypropyl methyl cellulose, other compositions and content and embodiment 2
It is identical.
Preparation method: same as Example 2.
A kind of cement slurry of comparative example 5
Formula: the difference from example 2 is that: added thickener is polyurethane thickener, other compositions and content
It is same as Example 2.
Preparation method: same as Example 2.
A kind of cement slurry of comparative example 6
Formula: the difference with embodiment 6 is: the mass ratio of filler and thickener is 1: 5, other compositions and content with
Embodiment 6 is identical.
Preparation method: same as Example 6.
A kind of cement slurry of comparative example 7
Formula: the difference with embodiment 6 is: the mass ratio of filler and thickener is 10: 1, other compositions and content
It is same as Example 6.
Preparation method: same as Example 6.
A kind of cement slurry of comparative example 8
Formula: the difference with embodiment 6 is: the mass ratio of water-reducing agent and defoaming agent is 3: 1, other compositions and content with
Embodiment 6 is identical.
Preparation method: same as Example 6.
A kind of cement slurry of comparative example 9
Formula: the difference with embodiment 6 is: the mass ratio of water-reducing agent and defoaming agent is 2: 5, other compositions and content with
Embodiment 6 is identical.
Preparation method: same as Example 6.
Performance test
The test of cracking resistance described in embodiment, durable cement mortar is referring to " building mortar basic performance tests method "
The test method of JGJ/T70-2009, test result is as follows for basic performance shown in table 1.
Table 1
The setting time of cracking resistance, durable cement mortar that it can be seen from upper table data prepared by the application meets cement
The performance indicator of slurry, and there is good water-retaining property water-retaining property can reach 96%, cement bonded sand prepared by the present invention
The shrinking percentage of slurry is very low, and 28 days shrinking percentages of cement mortar as prepared by embodiment 1 and embodiment 2 only have 0.04%, shrinking percentage
Low, good water-retaining property means that breaking resistance height, i.e., cement mortar prepared by the present invention has very high breaking resistance；Pass through inspection
Survey it is again seen that cement mortar prepared by the present invention have excellent compression strength, such as embodiment 2 prepare cement mortar 28 days
Compression strength can reach 43.4Mpa, significantly larger than existing level；Since the content of the thickener used is lower in embodiment 8,
So the water retention property of the cement mortar of preparation is poor, so other various performances are also by a degree of influence；Embodiment 9
It is single defoaming agent with defoaming agent used in embodiment 10, is found by test, the use of defoaming agent reduces cement film
The hollowing phenomenon generated in the process, and then influence the compression strength of cement mortar, i.e. the resistance to compression of the cement mortar of the preparation of embodiment 9
Intensity is 35.3Mpa, and the compression strength of cement mortar prepared by embodiment 10 is 34.6Mpa, although being lower than the embodiment of the present invention
The level of 1-7, but still due to the performance of existing cement mortar.
Cracking resistance described in embodiment, the consistency of durable cement mortar and delamination degree test result see the table below 2, consistency and point
Depth respectively represents the mobility and water-retaining property of mortar, and consistometric value more high fluidity is better, and stratification degree is bigger, and water-retaining property is poorer.
Table 2
Can be seen that the cement mortar prepared in the present invention from upper table data all has good consistency and delamination degree, real
The defoaming agent that single kind has been used in example 5 is applied, the water-reducing agent used is preferably sodium lignin sulfonate, but contained thickening
The content rather moderate of agent and plastic optical fibre, so it is not very greatly, by upper that the consistency and delamination degree to cement mortar, which impact,
Table data know its minimal effect delamination degree of cement slurry, and have not significant impact to consistency；Embodiment 9 and embodiment 10
Used in water-reducing agent be acrylic acid and triethanolamine, and the amount of thickener being added is less, finds out from testing result, subtracts
The use of aqua and thickener can significantly affect the delamination degree of cement slurry, but prepared by the present invention in terms of overall testing result
Each performance of cement slurry is better than existing level.
The consistency and delamination degree of cement mortar described in cracking resistance described in embodiment 8, durable cement mortar and comparative example 1-3
Testing result see the table below 3
Table 3
It can be seen that in cement mortar consistency and delamination degree in the case where not adding plastic optical fibre according to the data of upper table 3
It is not able to satisfy standard index, same plastic optical fibre length is too long or the too short standard index for being also unable to satisfy cement mortar.And
Cement mortar consistency prepared by the embodiment of the present invention 2 is moderate, mortar good fluidity, and places for a long time not stratified.
The setting time of cement mortar described in cracking resistance as described in example 2, durable cement mortar and comparative example 4-5 and guarantor
The testing result of water rate see the table below 4
Table 4
It can be seen that hydroxypropyl methyl cellulose from the test data of upper table embodiment 2 and comparative example 4 to tie in the present invention
Other compositions are closed, the water-retaining property of cement mortar not only can be improved in the present invention, also significantly reduce the contraction of cement mortar
Rate significantly improves 28 days compression strength of cement mortar also.Can be seen that from the data of upper table embodiment 2 and comparative example 5 makes
The water retention of cement mortar can be improved with thickener, to extend the setting time of cement slurry, but use in the present invention
Disclosed thickener can be such that setting time complies with standard, while can also increase the water-retaining property of cement slurry, improve cement bonded sand
The compression strength of slurry.
The setting time of cement mortar described in cracking resistance described in embodiment 6, durable cement mortar and comparative example 6-9 and guarantor
The testing result of water rate see the table below 5
Table 5
It can be seen that the quality of filler and thickener can obvious shadow from the test data of upper table comparative example 6 and comparative example 7
The water retention of Xiangshui County's material-mud, when the mass ratio of filler and thickener is not in proportional region disclosed by the invention, cement
The adhesion strength of slurry reduces, and a degree of variation occurs in shrinking percentage, to affect the crack resistance of cement slurry.Similarly
It can be seen that the mass change of water-reducing agent and defoaming agent can also significantly affect water according to the test data of comparative example 8 and comparative example 9
The performance of material-mud can a degree of shadow when the mass ratio of water-reducing agent and defoaming agent is not in range disclosed by the invention
The adhesion strength of Xiangshui County's material-mud reduces the compression strength of cement slurry, so that cement slurry be made to occur in the drying process
Crack, i.e., each performance of cement slurry that only various composition is prepared in suitable mass ratio range can just comply with standard finger
Mark, meets requirement in industry.
Finally, it should be noted that these are only the preferred embodiment of the present invention, it is not intended to restrict the invention, although
Present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, still can be right
Technical solution documented by foregoing embodiments is modified or equivalent replacement of some of the technical features, it is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (6)
1. a kind of cracking resistance, durable cement mortar, it is characterised in that: the raw material including following parts by weight: 90-150 parts of cement, sand
50-90 parts, 5-20 parts of building solid castoff, 10-50 parts of industrial solid castoff, 1-8 parts of hydroxypropyl methyl cellulose, pearl
5-15 parts of rock, 5-20 parts of kaolin, 1-10 parts of filler, 1-5 parts of thickener, 1-5 parts of redispersable latex powder, water-reducing agent 1-6
Part, 1-6 parts and water 100-200 parts of defoaming agent；
The thickener is thickening agent, water-retaining agent and part mineral admixture composition；The thickening agent is paraffin, ceresine, stone
One or more of grease and silica gel；The water-retaining agent is polyacrylamide, Sodium Polyacrylate, polyacrylic acid potassium and polypropylene
One of sour ammonium；The part mineral admixture is iron ore, magnesium ore powder, calcium carbonate powder and sodium metasilicate powder
One or more of；The mass ratio of thickening agent, water-retaining agent and part mineral admixture is 1-10: 1-10 in the thickener:
1-5；
The water-reducing agent is sodium lignin sulfonate, triethanolamine or acrylic acid；
The defoaming agent is polyoxyethylene polyoxypropylene pentaerythrite ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, polyoxypropylene glyceryl
One or more of ether, polyoxyethylene polyoxypropylene glycerin ether and dimethyl silicone polymer；
The mass ratio of the water-reducing agent and defoaming agent is 1: 1；
The building solid castoff is construction waste solid cement, waste mining rock or concrete debris；
The industrial solid castoff is one or more of Iron-ore Slag, steel slag, flue dust and plastic optical fibre, at least containing modeling
Expect fiber；
The plastic optical fibre is waste plastic lawn or Polywoven Bag.
2. cement mortar according to claim 1, it is characterised in that: the cement is conventional portland cement；The sand
For middle sand.
3. cement mortar according to claim 1, it is characterised in that: the filler is kaolin, diatomite, talcum
One of powder, graphite, carbon black, alumina powder, glass powder, flake asbestos, mica powder, silica flour, carbon fiber and diamond dust are several
Kind；
The mass ratio of the filler and thickener is 1-2: 1.
4. cement mortar according to claim 1, it is characterised in that: the redispersable latex powder is vinylacetate
With ethylene copolymer rubber powder, ethylene and vinyl chloride and vinyl laurate ternary polymerization rubber powder, vinylacetate and higher fatty acids
It is total that vinyl acetate is copolymerized rubber powder, acrylate and styrene copolymerized rubber powder, vinylacetate homopolymerization rubber powder and styrene and butadiene
One of poly- rubber powder.
5. the preparation method of cement mortar according to claim 1-4, it is characterised in that: specific preparation method
Are as follows:
(1) slurry A is prepared
It is put into melting furnace firstly, weighing industrial solid castoff, controls ignition temperature, starch industrial solid castoff melt into
Then material imports slurry in fiberizer, generate inorfil, then pour into dispersion machine again, the fiber of length needed for being formed,
It is mixed after taking-up with hydroxypropyl methyl cellulose, and water is added, waste slurry A is obtained after being uniformly dispersed, it is spare；
(2) slurry B is prepared
Cement, sand, building solid castoff powder, perlite, kaolin, filler and thickener addition is weighed according to the proportion to stir
It mixes in machine, and slurry A obtained in step (1) is added, water is then added, 30- is stirred with the speed of 400-800r/min
60min obtains slurry B after mixing evenly；
(3) cement mortar is prepared
Redispersable latex powder, water-reducing agent and defoaming agent are added in the slurry B that step (2) obtains, water is added at 40-80 DEG C
Under conditions of with the speed of 80-150r/min, stir 1-3h to get the cement mortar is arrived.
6. preparation method according to claim 5, it is characterised in that: the ignition temperature in step (1) is 800-1800 DEG C,
The fibre length is 1-3cm；Building solid castoff powder described in step (2) be by building solid castoff successively
Obtained powder after being crushed, crushed, being sieved, powder diameter are 20-80 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810396571.XA CN108383456B (en) | 2018-04-28 | 2018-04-28 | A kind of cracking resistance, durable cement mortar and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810396571.XA CN108383456B (en) | 2018-04-28 | 2018-04-28 | A kind of cracking resistance, durable cement mortar and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108383456A CN108383456A (en) | 2018-08-10 |
| CN108383456B true CN108383456B (en) | 2019-04-02 |
Family
ID=63066250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810396571.XA Active CN108383456B (en) | 2018-04-28 | 2018-04-28 | A kind of cracking resistance, durable cement mortar and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108383456B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111393094A (en) * | 2019-01-03 | 2020-07-10 | 东莞市易发混凝土有限公司 | Recycled aggregate concrete and preparation method thereof |
| CN110528822B (en) * | 2019-08-26 | 2021-02-05 | 广州市卓爵建筑工程有限公司 | Cement floor construction method |
| CN113620679A (en) * | 2020-05-06 | 2021-11-09 | 广东省杰熙科技有限公司 | Novel light environment-friendly waterproof fireproof moistureproof wallboard |
| CN113526939B (en) * | 2021-05-28 | 2022-07-01 | 深圳田十科技有限公司 | Multifunctional building material and preparation method thereof |
| CN114560666B (en) * | 2022-04-11 | 2023-07-04 | 广东大禹工程技术有限公司 | Environment-friendly durable building material |
| CN115710109A (en) * | 2022-12-06 | 2023-02-24 | 四川大学 | Hybrid reinforced and toughened cement mortar material of shoe and clothes wastes and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104973832B (en) * | 2015-06-17 | 2017-02-01 | 杭州正博新型建筑材料有限公司 | Anti-crack mortar and preparation method therefor |
| CN106854067B (en) * | 2017-01-16 | 2019-03-08 | 国隆科技股份有限公司 | Self-leveling dry-mixed mortar and preparation method thereof |
| CN107032701A (en) * | 2017-04-06 | 2017-08-11 | 合肥欧克斯新型建材有限公司 | A kind of cement mortar and preparation method thereof |
-
2018
- 2018-04-28 CN CN201810396571.XA patent/CN108383456B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108383456A (en) | 2018-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108383456B (en) | A kind of cracking resistance, durable cement mortar and preparation method thereof | |
| CN102924014B (en) | Binding mortar with light weight and high droop resistance and preparation and use methods | |
| KR101067891B1 (en) | Crack repairing composition of concrete structure using geopolymer | |
| KR101582576B1 (en) | High strength mortar composition for repair, high strength mortar for repair comprising the same and manufacturing method thereof | |
| WO2012073258A2 (en) | A composition suitable for use in building construction | |
| CN103058616A (en) | Modified cement blending material and concrete used for grouting wall and prepared by the same | |
| CN104844117A (en) | Light-weight flexible cohesive-failure ceramic tile adhesive | |
| CN108947371A (en) | A kind of polymer foil cracking resistance plastering mortar | |
| CN106517870A (en) | Efficient-spraying type dry-mixing and wet-mixing mortar plasticizer composition as well as preparation method and application method thereof | |
| CN102180628A (en) | High-strength micro-expansion prestress anchoring grouting material and preparation method thereof | |
| CN102390962B (en) | Desert sand compound type building dry-mixed mortar and manufacturing method thereof | |
| CN104973832A (en) | Anti-crack mortar and preparation method therefor | |
| CN110317029A (en) | A kind of masonry ancient building reinforcement and repair silicon ash reconciliation water lime mortar and preparation method | |
| CN101508539B (en) | Polymer glue powder and method of use thereof | |
| CN108191360A (en) | A kind of fibre cement gravity flowing levelling mortar and preparation method thereof | |
| CN106348682A (en) | Rapid airfield pavement repairing rubber | |
| CN107382171A (en) | Concrete and preparation method thereof | |
| CN107651893A (en) | A kind of radiation proof decoration cement | |
| CN103043971A (en) | Cracking-resistant cement-base waterproof coating | |
| WO2014083579A1 (en) | Composition for masonry mortars | |
| CN111072361A (en) | Novel phosphogypsum plastering mortar and preparation method thereof | |
| CN110981354A (en) | Masonry mortar suitable for various masonry materials | |
| CN111205049B (en) | Masonry mortar prepared from iron tailing powder and slag micro powder | |
| CN108483978B (en) | Cementing agent for regenerated pervious concrete and preparation method and application thereof | |
| CN106517967A (en) | Water-retention crack-resistance concrete |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20181108 Address after: 215400 38 Liuzhou Road, Lou Dong Street, Taicang, Jiangsu. Applicant after: Zhu Qingcuan Address before: 364000 251, room 2, 2 Longgong Road, Fujian Tianlong business district, Longyan economic and Technological Development Zone, Longyan, China Applicant before: Fujian Hengding Construction Engineering Co. Ltd. |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190211 Address after: Room 251, Building 2, 19 Longgong Road (Tianlong Business District), Longyan Economic and Technological Development Zone, Fujian Province, 364000 Applicant after: Fujian Hengding Construction Engineering Co. Ltd. Address before: 215400 38 Liuzhou Road, Lou Dong Street, Taicang, Jiangsu. Applicant before: Zhu Qingcuan |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |