CN114804772B - Light plastering mortar and using method thereof - Google Patents
Light plastering mortar and using method thereof Download PDFInfo
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- CN114804772B CN114804772B CN202210509212.7A CN202210509212A CN114804772B CN 114804772 B CN114804772 B CN 114804772B CN 202210509212 A CN202210509212 A CN 202210509212A CN 114804772 B CN114804772 B CN 114804772B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
- B28C5/006—Methods for mixing involving mechanical aspects
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/26—Carbonates
- C04B14/28—Carbonates of calcium
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/12—Waste materials; Refuse from quarries, mining or the like
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention belongs to the technical field of building materials, and particularly relates to light plastering mortar and a using method thereof. The lightweight plastering mortar comprises 110-165 parts of cementing material, 330-660 parts of fine aggregate, 0.05-0.4 part of air entraining agent, 0.2-1.0 part of thickening agent and 0.1-0.5 part of water-retaining agent. The light plastering mortar has the advantages of excellent physical and mechanical properties, excellent working performance, capability of manual construction and mechanized construction, long operable time, quick development of early strength, higher strength, smaller heat conductivity coefficient, good volume stability, no shrinkage cracking problem and the like. The building block plastering machine is suitable for plastering construction engineering of inner and outer wall surfaces of an assembled building, is also suitable for plastering engineering of cast-in-place concrete walls and various block walls, has good leveling and plastering effects, saves materials, has high cost performance and high construction efficiency, has better heat preservation effect, and ensures the plastering engineering quality and service life of the wall.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to light plastering mortar and a using method thereof.
Background
In recent years, building industrialization and assembly type buildings are rapidly developed, and an assembly type wall with the characteristics of high flatness and the like is one of key technologies for realizing rapid construction of the assembly type buildings. Correspondingly, thin-layer plastering mortar on the surface of the wall body is produced at the same time; and with the shortage of labor force, the mechanical spraying construction of plastering mortar is gradually increased. Therefore, the light plastering mortar is adopted to carry out wall surface plastering more and more. However, in practical engineering, the performance of the lightweight plastering mortar cannot well meet engineering application requirements, and mainly shows the problems of easy sagging after plastering, slow development of early strength, easy plastic cracking, easy shrinkage cracking after drying, easy generation of hollowing and shedding and the like.
In addition, along with the shortage of natural gravels, mortar is prepared more and more by using solid wastes such as machine-made sand construction waste fine aggregate or various tailings sand and the like as the fine aggregate. The specific surface area of the machine-made sand particles is large, and accordingly the problems that plastering mortar is difficult to smear and easy to crack are caused; the fine aggregate of the construction waste can cause the problems of low strength of plastering mortar, large water demand and the like; the tailing sand has the characteristics of poor grading, more fine powder and the like, so that the plastering mortar has the problems of high water consumption, easy plastic cracking and the like.
Disclosure of Invention
Based on the technical scheme, the light plastering mortar has the advantages that the existing technical problem of the light plastering mortar is solved by coordinating different material characteristics and optimizing the mixing ratio, the solid waste material is utilized in a large mixing amount, and the light plastering mortar with excellent working performance, lower volume density and heat conductivity coefficient, controllability and adjustability, quick development of early strength, higher later strength, good bonding property, excellent volume stability and high smoothness is prepared.
Specifically, the invention firstly provides a light plastering mortar which comprises the following components in parts by weight:
wherein the cementing material at least comprises the following components in a mass ratio of 100:5-25:5-25:0-15 parts of ordinary portland cement, fly ash, stone powder and construction waste fine powder;
the fine aggregate at least comprises the following components in a mass ratio of 30-100:150-250:150-300:0-10 of construction waste recycled fine aggregate, tailing sand, machine-made sand and vitrified micro-beads.
In the invention, the multiple cementing material system is compounded by common portland cement, fly ash, stone powder and construction waste fine powder, and each component of the cementing material system has a complementary advantage effect. The light plastering mortar has the advantages that the common portland cement endows the light plastering mortar with certain early strength, and the later strength is ensured; the fly ash exerts potential gelling activity, improves later strength, has a ball effect at the same time, and is beneficial to improving construction smearing performance to a certain extent; the nano particles in the stone powder play a role of crystal nucleus, so that the hydration of the portland cement is promoted, the strength is improved, and the drying shrinkage rate is reduced; the building waste fine powder has the advantages that the gelling activity of the building waste fine powder is exerted, and the water retention capacity of the light plastering mortar is improved based on the characteristic of high micro-fine pores. The advantages of the multielement cementing material system are complementary, and the light plastering mortar has good performance.
The fine aggregate is prepared by compounding recycled building waste fine aggregate, tailing sand, machine-made sand and vitrified micro-beads, and the lightweight plastering mortar is endowed with excellent performance.
The air entraining agent with a proper mixing amount range is introduced into a large number of micro closed pores, the pore structure is optimized, the volume density and the heat conductivity coefficient of the light plastering mortar are further reduced, and meanwhile, the fresh-mixed light plastering mortar is endowed with excellent spreadability. The thickening agent obviously improves the consistency and the anti-sagging performance of the light plastering mortar, and improves the adhesion effect and the flatness after construction. The water-retaining agent with a proper mixing amount range ensures that the light plastering mortar has good water retention performance, reduces the water evaporation rate, improves the plastic cracking resistance and the drying shrinkage cracking resistance, and further reduces the volume density by introducing micro bubbles (the water-retaining agent improves the viscosity of the slurry, so that the air wrapped in the slurry in the stirring process cannot be dissipated in time, and a large amount of micro bubbles are formed in the slurry). The three additives have synergistic effect, so that the light plastering mortar has excellent working performance and the volume stability is improved to a certain extent.
The components have synergistic effect, so that the product of the invention has good construction performance, strength, adhesive property, volume stability and lower heat conductivity coefficient, and the key technical problems of poor construction performance, insufficient coordination between volume density and strength, poor volume stability, easy generation of plastic cracking and drying shrinkage cracking and the like of the light plastering mortar are really solved.
In the invention, the preferable weight parts of the components are as follows:
Preferably, in the cementing material of the invention, the Portland cement is one of strength grade PO42.5 or PO42.5R Portland cement; the fly ash is II-grade fly ash; the stone powder is powder generated during the mechanical crushing and sand making of limestone rocks, wherein the clay content is less than or equal to 2 percent, and the specific surface area is more than or equal to 350m 2 (iv) kg; the construction waste fine powder is powder with the particle size of less than or equal to 0.075mm generated in the process of crushing and screening construction waste. The raw materials are selected as the cementing material, so that the advantages of all components can be fully exerted, and the advantage complementary effect can be better realized.
Preferably, in the fine aggregate, the construction waste recycled fine aggregate is an aggregate with a particle size of 0.15-2.36 mm generated in the process of crushing and screening construction waste; the tailing sand is iron tailing fine sand with the particle size range of 0.15-1.18 mm and the fineness modulus of 1.6-2.2; the machine-made sand is machine-made sand obtained by mechanically crushing limestone rocks to make sand, and coarse sand in a zone II with the particle size range of 0.15-2.36 mm is prepared; the vitrified micro bubbles have the bulk density of 80-120 kg/m 3 The particle diameter range of the particles is 0.15-1Class II vitrified micro bubbles with 18mm and surface vitrification closed pore rate more than or equal to 90 percent.
Three kinds of sands with different fineness modulus and particle size characteristics, namely, construction waste recycled fine aggregate, tailing sand and machine-made sand, form fine aggregate with reasonable gradation, and ensure that the light plastering mortar has a stronger framework; the construction waste recycled fine aggregate and the tailing sand with round particles make up for the defect of multi-edge angle of machine-made sand, so that the light plastering mortar has high construction performance and smearing performance, high strength and shrinkage cracking resistance, and the construction waste recycled fine aggregate and the iron tailing sand which are difficult to be well utilized are well recycled. The vitrified micro bubbles with given physical property parameter range endow the light plastering mortar with relatively low volume density to a certain extent, and reduce the heat conductivity coefficient.
Preferably, the air entraining agent is a polysiloxane air entraining agent, the thickening agent is hydroxypropyl distarch phosphate, and the water retaining agent is 6000-15000mPa.s hydroxypropyl methyl cellulose. Therefore, the polysiloxane air entraining agent, the hydroxypropyl distarch phosphate thickener and the hydroxypropyl methyl cellulose water retaining agent provided by the embodiment of the invention act synergistically to endow the light plastering mortar with excellent working performance and improve the volume stability. Meanwhile, the hydroxypropyl methyl cellulose water-retaining agent with a proper viscosity range ensures that the light plastering mortar has proper viscosity and bonding effect with a wall body on the basis of giving consideration to high plastic cracking resistance and drying shrinkage cracking resistance.
The invention also provides a preparation method of the light plastering mortar, which comprises the following steps of accurately weighing various raw materials according to the weight proportion, firstly adding the fine aggregate and the cementing material into a double-screw forced mixer together for mixing for 60-120 s, then adding the air entraining agent, the thickening agent and the water-retaining agent into the mixer together for mixing for 90-150 s, and thus obtaining the product.
The invention also provides a use method of the light plastering mortar, which comprises the following specific steps: and pouring the weighed light plastering mortar into a forced stirrer, slowly adding the required water amount while stirring at a constant speed, stirring for more than 3min, and uniformly stirring for construction. The water addition amount is 12 to 16 percent of the total weight of the light plastering mortar when the mortar is used preferably.
The invention has the advantages that the product has excellent performance, uniform and stable quality, simple production process and convenient use, and ensures the engineering quality; in addition, a large amount of solid wastes such as fly ash, stone powder, construction waste fine aggregate, tailing sand and the like are applied, so that the economic cost is low, and the social benefit, the environmental benefit and the economic benefit are high. The leveling and plastering method is wide in application range, suitable for leveling and plastering projects of the assembled building wall, also suitable for leveling and plastering projects of cast-in-place concrete and various masonry walls, and suitable for large-scale popularization and application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. The technical solution of the present invention is not limited to the following specific embodiments, and includes any combination of the specific embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the present invention, the specific techniques or conditions not specified in the examples are performed according to the techniques or conditions described in the literature in the art or according to the product specification. The instruments and the like are conventional products which are purchased by normal distributors and are not indicated by manufacturers. The chemical raw materials used in the invention can be conveniently bought in domestic chemical product markets.
The invention is further described with reference to specific examples. Wherein:
ordinary portland cement: PO42.5 Portland cement; from the Anhui conch Cement Ltd;
fly ash: class II fly ash; from Shanghai Bao Steel New building materials science and technology Co., ltd;
stone powder: mechanical breaking of limestone rockThe clay content of the powder produced in the process of crushing sand is less than or equal to 2 percent, and the specific surface area is more than or equal to 350m 2 (iv) kg; from Zhejiang faith new building materials, inc.;
the construction waste fine powder material comprises the following components: powder with the particle size of less than or equal to 0.075mm generated in the process of crushing and screening the construction waste; from Shanghai Bao Steel New building materials science and technology Co., ltd;
construction waste recycled fine aggregate: aggregate with the particle size of 0.15-2.36 mm generated in the process of crushing and screening the construction waste; from Shanghai Bao Steel New building materials science and technology Co., ltd;
tailing sand: fine iron tailing sand with the grain size range of 0.15-1.18 mm and the fineness modulus of 1.6-2.2; from Beijing institute of building materials science, inc.;
and (3) sand making by machine: mechanically crushing limestone rocks to prepare coarse sand in a region II with the particle size range of 0.15-2.36 mm; from Zhejiang faith new building materials, inc.;
vitrification of the micro-beads: bulk density of 80-120 kg/m 3 The range of the particle size of the particles is 0.15-1.18 mm, and the surface vitrification closed pore rate is more than or equal to 90 percent; from Xinyang Hengchang perlite insulation materials Co., ltd;
air entraining agent: an alkyl sulfate polysiloxane air entraining agent; from shanghai south new materials, ltd;
thickening agent: hydroxypropyl distarch phosphate; from shanghai south new materials, ltd;
water-retaining agent: 6000-15000mPa.s hydroxypropyl methylcellulose; from Shanghai south New materials, inc.
Example 1
Embodiment 1 provides a lightweight plastering mortar, which comprises the following components in parts by weight: the concrete comprises a cementing material 150 (wherein the cementing material is 100 parts of ordinary portland cement, 20 parts of fly ash, 20 parts of stone powder and 10 parts of construction waste fine powder), a fine aggregate 450 (wherein the construction waste recycled fine aggregate is 45 parts of construction waste, tailing sand 200 parts of machine-made sand 200 parts of construction waste, vitrified micro bubbles 5 parts of construction waste), an air entraining agent 0.3 part of thickening agent 0.5 part of construction waste, and a water-retaining agent 0.25 part of construction waste.
Adding water accounting for 15 percent of the total weight of the light plastering mortar, and uniformly stirring according to the using method to obtain the required product. The results of the performance tests are shown in table 1.
Example 2
Embodiment 2 provides a lightweight plastering mortar, which comprises the following components in parts by weight: the concrete comprises a cementing material 140 (wherein the Portland cement is 100, the fly ash is 15, the stone powder is 15, and the construction waste fine powder is 10), fine aggregate 560 (wherein the construction waste recycled fine aggregate is 50, the tailing sand is 250, the machine-made sand is 250, and the vitrified micro-bead is 10), an air entraining agent 0.2, a thickening agent 0.4, and a water-retaining agent 0.2.
Adding water accounting for 13 percent of the total weight of the light plastering mortar, and uniformly stirring according to the using method to obtain the required product. The results of the performance tests are shown in table 1.
Example 3
Embodiment 3 provides a lightweight plastering mortar, which comprises the following components in parts by weight: the concrete comprises a cementing material 125 (wherein the cementing material is 100 parts of ordinary portland cement, 10 parts of fly ash, 10 parts of stone powder and 5 parts of construction waste fine powder), fine aggregate 625 (wherein the construction waste recycled fine aggregate 77, tailing sand 240, machine-made sand 300 and vitrified micro-beads 8), an air entraining agent 0.25, a thickening agent 0.7 and a water-retaining agent 0.3.
Adding water accounting for 12 percent of the total weight of the light plastering mortar, and uniformly stirring according to the using method to obtain the required product. The results of the performance tests are shown in table 1.
Table 1 test results of light plastering mortar properties
* Performance indexes in local standard 'lightweight plastering mortar' DB 44/T1975 in Guangdong province.
The light plastering mortar provided by the invention has the advantages of excellent performance indexes, excellent construction performance, high strength, good bonding performance, small drying shrinkage, excellent volume stability, low heat conductivity coefficient and good heat preservation effect, and the indexes of the light plastering mortar far exceed the standard requirements. The leveling and plastering method is wide in application range, and suitable for leveling and plastering projects of the assembled building wall body and cast-in-place concrete and masonry wall bodies.
The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (11)
1. The light plastering mortar is characterized by comprising the following components in parts by weight:
110-165 parts of a cementing material;
330-660 parts of fine aggregate;
0.05-0.4 part of air entraining agent;
0.2-1.0 part of thickening agent;
0.1-0.5 part of water-retaining agent;
wherein the cementing material at least comprises the following components in a mass ratio of 100:5-25:5-25:0-15 parts of ordinary portland cement, fly ash, stone powder and construction waste fine powder;
the fine aggregate at least comprises the following components in a mass ratio of 30-100:150-250:150-300:0-10 parts of construction waste recycled fine aggregate, tailing sand, machine-made sand and vitrified micro-beads;
the construction waste recycled fine aggregate is an aggregate with the particle size of 0.15 to 2.36mm generated in the process of crushing and screening construction waste;
the tailing sand is iron tailing fine sand with the particle size range of 0.15-1.18mm and the fineness modulus of 1.6-2.2;
the machine-made sand is coarse sand in a region II with the particle size range of 0.15-2.36mm, which is obtained by mechanically crushing limestone rocks to make sand;
the vitrified micro bubbles have the bulk density of 80 to 120kg/m 3 And the class II vitrified micro bubbles have the particle size range of 0.15 to 1.18mm and the surface vitrification closed pore rate of more than or equal to 90 percent.
2. The lightweight plastering mortar of claim 1, which comprises the following components in parts by weight:
120-150 parts of a cementing material;
360-540 parts of fine aggregate;
0.15-0.3 part of air entraining agent;
0.3-0.8 part of thickening agent;
0.15 to 0.3 portion of water retention agent.
3. The lightweight plastering mortar of claim 1 or 2, wherein the Portland cement is one of strength grade PO42.5 or PO42.5R Portland cement;
and/or the fly ash is II-grade fly ash;
and/or the stone powder is powder generated in the process of mechanically crushing limestone and rock to prepare sand, wherein the clay content is less than or equal to 2 percent, and the specific surface area is more than or equal to 350m 2 /kg；
And/or the construction waste fine powder is powder with the particle size of less than or equal to 0.075mm generated in the process of crushing and screening construction waste.
4. The lightweight plastering mortar of claim 1 or 2, wherein the air-entraining agent is a silicone air-entraining agent.
5. The lightweight plastering mortar of claim 1 or 2, wherein the thickener is hydroxypropyl distarch phosphate.
6. The lightweight plastering mortar of claim 4, wherein the thickener is hydroxypropyl distarch phosphate.
7. The lightweight plastering mortar of claim 1 or 2, wherein the water retaining agent is hydroxypropyl methylcellulose of 6000 to 15000mPa.s.
8. The lightweight plastering mortar of claim 6, wherein the water retaining agent is hydroxypropyl methylcellulose of 6000 to 15000mPa.s.
9. A method for preparing a lightweight plastering mortar as claimed in any of claims 1 to 8, comprising the steps of: and adding the fine aggregate and the cementing material into a mixer, mixing for 60-120s, and adding the air entraining agent, the thickening agent and the water-retaining agent into the mixer, and mixing for 90-150s to obtain the high-strength concrete.
10. The use method of the light-weight plastering mortar of any one of claims 1 to 8, characterized in that the light-weight plastering mortar of any one of claims 1 to 8 is added into a stirrer, and water is slowly added while stirring, and the light-weight plastering mortar can be used for construction after being uniformly stirred.
11. The use method according to claim 10, wherein the water is added in an amount of 12-16% by mass of the lightweight plastering mortar.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210509212.7A CN114804772B (en) | 2022-05-10 | 2022-05-10 | Light plastering mortar and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210509212.7A CN114804772B (en) | 2022-05-10 | 2022-05-10 | Light plastering mortar and using method thereof |
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| CN114804772A CN114804772A (en) | 2022-07-29 |
| CN114804772B true CN114804772B (en) | 2022-12-13 |
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| CN202210509212.7A Active CN114804772B (en) | 2022-05-10 | 2022-05-10 | Light plastering mortar and using method thereof |
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| CN102285781A (en) * | 2011-06-08 | 2011-12-21 | 深圳广田装饰集团股份有限公司 | Inner wall plastering mortar and construction method thereof |
| JP2012140264A (en) * | 2010-12-28 | 2012-07-26 | Taiheiyo Materials Corp | Cement mortar for construction substrate |
| CN104556866A (en) * | 2014-12-23 | 2015-04-29 | 中建商品混凝土有限公司 | Tailing powder wet-mixed plastering mortar |
| CN105948653A (en) * | 2016-05-10 | 2016-09-21 | 厦门天润锦龙建材有限公司 | Recycled wet-mixed mortar and preparation method thereof |
| CN108996965A (en) * | 2018-08-16 | 2018-12-14 | 广东基业长青建筑科技有限公司 | A kind of novel wall mechanically spraying plastering mortar combination packet and preparation method thereof and application method |
| CN110963761A (en) * | 2019-12-23 | 2020-04-07 | 广东鲁邦建材科技实业有限公司 | Basalt-reinforced thin-layer light plastering mortar |
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| JP2012140264A (en) * | 2010-12-28 | 2012-07-26 | Taiheiyo Materials Corp | Cement mortar for construction substrate |
| CN102285781A (en) * | 2011-06-08 | 2011-12-21 | 深圳广田装饰集团股份有限公司 | Inner wall plastering mortar and construction method thereof |
| CN104556866A (en) * | 2014-12-23 | 2015-04-29 | 中建商品混凝土有限公司 | Tailing powder wet-mixed plastering mortar |
| CN105948653A (en) * | 2016-05-10 | 2016-09-21 | 厦门天润锦龙建材有限公司 | Recycled wet-mixed mortar and preparation method thereof |
| CN108996965A (en) * | 2018-08-16 | 2018-12-14 | 广东基业长青建筑科技有限公司 | A kind of novel wall mechanically spraying plastering mortar combination packet and preparation method thereof and application method |
| CN110963761A (en) * | 2019-12-23 | 2020-04-07 | 广东鲁邦建材科技实业有限公司 | Basalt-reinforced thin-layer light plastering mortar |
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