CN111517723A - Recycled aggregate sound insulation mortar and preparation method thereof - Google Patents
Recycled aggregate sound insulation mortar and preparation method thereof Download PDFInfo
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- CN111517723A CN111517723A CN202010361872.6A CN202010361872A CN111517723A CN 111517723 A CN111517723 A CN 111517723A CN 202010361872 A CN202010361872 A CN 202010361872A CN 111517723 A CN111517723 A CN 111517723A
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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
-
- 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
- C04B18/082—Cenospheres
-
- 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
- C04B18/10—Burned or pyrolised refuse
-
- 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
- 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
- C04B18/165—Ceramic waste
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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
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
- C04B18/26—Wood, e.g. sawdust, wood shavings
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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
- C04B2111/52—Sound-insulating 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
- 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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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
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Abstract
The invention provides recycled aggregate sound insulation mortar, and belongs to the technical field of resource recycling of wall mortar and solid waste. The invention adopts cheap and easily obtained construction waste recycled red brick sand and recycled aerated brick sand as lightweight aggregate to replace natural sand, and simultaneously adds recycled wood particles with better sound insulation performance, lightweight porous hollow floating beads, household garbage incinerator slag, recycled foamed ceramic cutting waste particles and other sound insulation fillers, and the obtained recycled aggregate sound insulation mortar can effectively improve the sound insulation performance of the floor slab, has an impact sound pressure level of less than 70dB, is convenient and rapid to construct, has good cohesiveness with a matrix, has low comprehensive cost, and has low requirements on the quality and the skill of constructors.
Description
Technical Field
The invention relates to the technical field of recycling of wall mortar and solid waste, in particular to recycled aggregate sound insulation mortar and a preparation method thereof.
Background
Medical research shows that when the noise reaches more than 80dB, the noise has obvious negative effects on the auditory system, the visual system, the mental system and the digestive system of people. Therefore, the newly-built civil houses have more strict requirements on floor impact sound.
The main methods of floor sound insulation at the present stage are paving an elastic surface layer, constructing a floating floor sound insulation structure, installing a sound insulation ceiling and the like. Elastic surface layer, floating construction formula floor sound insulation structure, sound insulation furred ceiling can both produce better effect in the floor sound insulation, but their application is being restricted to the circumstances such as its material expense height, construction technical requirement height, and the high general low on the contrary of present house floor simultaneously, installation furred ceiling can seriously reduce the clear height in room, so, people hope to have the problem that the floor sound insulation is solved to effectual and low price mode.
The sound insulation mortar is a novel building material with high-efficiency sound insulation performance, is mainly formed by mixing cement, sand, sound insulation filler and an additive in a proportioning and water adding manner, is good in workability, excellent in sound insulation performance, suitable for various fields, simple in site construction, strong in bonding force with a base material, stable in quality, low in consumption, free of cracking and hollowing, and has good market prospect. At present, a small amount of related products appear in the market, but most of the products are slightly modified from heat-insulating mortar, the actual sound insulation effect and the use effect are not ideal, natural sand resources are increasingly deficient, the price is increased year by year, and the cost problem also restricts the use and popularization of the product.
Disclosure of Invention
The invention aims to provide a recycled aggregate sound insulation mortar and a preparation method thereof, the recycled aggregate sound insulation mortar takes construction waste as aggregate and other production and living solid wastes as main raw materials, the raw material cost is low, the recycled aggregate sound insulation mortar has good sound insulation effect, and the problems of sound insulation of building floors, difficult disposal of solid waste and the like can be solved.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a recycled aggregate sound insulation mortar which comprises the following preparation raw materials in parts by mass:
30-35 parts of cement; 30-35 parts of construction waste regenerated red brick sand; 20-25 parts of construction waste regenerated aerated brick sand; 10-15 parts of regenerated wood particles; 10-15 parts of hollow floating beads; 10-15 parts of incinerator slag; 10-15 parts of regenerated foamed ceramic cutting waste particles; 2-5 parts of latex powder; 1-5 parts of cellulose ether; 0.2-0.3 part of regenerated fiber; 0.2-0.3 part of a water reducing agent; 30-35 parts of water.
Preferably, the cement is Portland cement or ordinary Portland cement with the compressive strength not less than 42.5 MPa.
Preferably, the particle size of the construction waste recycled red brick sand is 16-50 meshes; the grain size of the aerated brick sand regenerated from the construction waste is 30-100 meshes.
Preferably, the particle size of the regenerated wood particles is 18-50 meshes; the particle size of the hollow floating beads is 80-120 meshes.
Preferably, the incinerator slag is household garbage incinerator slag, and the particle size of the incinerator slag is 50-100 meshes.
Preferably, the particle size of the regenerated foamed ceramic cutting waste particles is 16-50 meshes.
Preferably, the cellulose ether is hydroxymethyl methyl cellulose ether having a viscosity of not less than 4000.
Preferably, the regenerated fibers are polypropylene fibers, and the length of the regenerated fibers is 2-3 cm; the water reducing agent is a special powder polycarboxylate superplasticizer for mortar, and the water reducing rate of the special powder polycarboxylate superplasticizer is not less than 25%.
The invention provides a preparation method of recycled aggregate sound insulation mortar in the technical scheme, which comprises the following steps:
premixing the cement, the construction waste recycled red brick sand, the construction waste recycled aerated brick sand, the recycled wood particles, the hollow floating beads, the incinerator slag, the recycled foamed ceramic cutting waste particles, the latex powder, the cellulose ether, the recycled fiber and the water reducing agent to obtain a dry powder;
and mixing and stirring the obtained dry powder and water to obtain the recycled aggregate sound insulation mortar.
Preferably, the mixing and stirring time is more than or equal to 10 min.
The invention provides a recycled aggregate sound insulation mortar which comprises the following preparation raw materials in parts by mass:
30-35 parts of cement; 30-35 parts of construction waste regenerated red brick sand; 20-25 parts of construction waste regenerated aerated brick sand; 10-15 parts of regenerated wood particles; 10-15 parts of hollow floating beads; 10-15 parts of incinerator slag; 10-15 parts of regenerated foamed ceramic cutting waste particles; 2-5 parts of latex powder; 1-5 parts of cellulose ether; 0.2-0.3 part of regenerated fiber; 0.2-0.3 part of a water reducing agent; 30-35 parts of water.
The invention adopts cheap and easily obtained construction waste recycled red brick sand and recycled aerated brick sand as lightweight aggregate to replace natural sand, and simultaneously adds recycled wood particles with better sound insulation performance, lightweight porous hollow floating beads, household garbage incinerator slag, recycled foamed ceramic cutting waste particles and other sound insulation fillers, and the obtained recycled aggregate sound insulation mortar can effectively improve the sound insulation performance of the floor slab, the impact sound pressure level reaches less than 70dB, the construction is convenient and rapid, the bonding property with the matrix is good, the cost of raw materials is low, and the requirements on the quality and the skill of constructors are low.
The scheme of the invention fully utilizes the construction waste and other production and living solid wastes, can convert the large low-value urban solid wastes into building materials urgently needed by the market, consumes a large amount of construction waste and production and living solid wastes, relieves the urban development dilemma that the solid wastes surround the city and can be filled everywhere, promotes the resource utilization of the construction waste and other solid wastes, improves the added value of products, and also saves a large amount of natural sandstone resources.
Detailed Description
The invention provides a recycled aggregate sound insulation mortar which comprises the following preparation raw materials in parts by mass:
30-35 parts of cement; 30-35 parts of construction waste regenerated red brick sand; 20-25 parts of construction waste regenerated aerated brick sand; 10-15 parts of regenerated wood particles; 10-15 parts of hollow floating beads; 10-15 parts of incinerator slag; 10-15 parts of regenerated foamed ceramic cutting waste particles; 2-5 parts of latex powder; 1-5 parts of cellulose ether; 0.2-0.3 part of regenerated fiber; 0.2-0.3 part of a water reducing agent; 30-35 parts of water.
In the present invention, unless otherwise specified, all the raw materials for preparation are commercially available products well known in the art or solid wastes of well-known origin.
The preparation raw materials of the recycled aggregate sound insulation mortar comprise, by mass, 30-35 parts of cement, preferably 32-34 parts of cement, and more preferably 33 parts of cement. In the present invention, the cement is preferably portland cement or ordinary portland cement having a compressive strength of not less than 42.5MPa, and more preferably PO42.5, PO42.5R, pi42.5 or pii 42.5. The present invention utilizes cement as the cementitious material.
Based on the mass parts of the cement, the preparation raw materials of the recycled aggregate sound insulation mortar provided by the invention comprise 30-35 parts of construction waste recycled red brick sand, preferably 32-34 parts of construction waste recycled red brick sand, and further preferably 33 parts of construction waste recycled red brick sand. In the invention, the particle size of the construction waste recycled red brick sand is preferably 16-50 meshes. In the invention, the construction waste recycled red brick sand is preferably obtained by crushing waste red bricks, and has the characteristics of light weight and multiple pores. The invention utilizes the construction waste recycled red brick sand as lightweight aggregate.
Based on the mass parts of the cement, the preparation raw materials of the recycled aggregate sound insulation mortar provided by the invention comprise 20-25 parts of construction waste recycled aerated brick sand, preferably 22-24 parts, and further preferably 23 parts. In the invention, the grain size of the aerated brick sand regenerated from the construction waste is preferably 30-100 meshes. In the invention, the aerated brick sand regenerated from the construction waste is preferably obtained by crushing waste aerated bricks, and has the characteristics of light weight and porosity. The invention utilizes the construction waste recycled aerated brick sand as lightweight aggregate.
Based on the mass parts of the cement, the preparation raw materials of the recycled aggregate sound insulation mortar provided by the invention comprise 10-15 parts of recycled wood particles, preferably 12-14 parts, and more preferably 13 parts. In the invention, the particle size of the regenerated wood particles is preferably 18-50 meshes. In the present invention, the reclaimed wood particles are preferably obtained by crushing recycled wood, and the kind of the wood is not particularly limited in the present invention. According to the invention, the regenerated wood particles, the latex powder and the cellulose ether are compounded to reduce the elasticity modulus of the mortar, so that better sound insulation and noise reduction effects are achieved.
Based on the mass parts of the cement, the preparation raw materials of the recycled aggregate sound insulation mortar provided by the invention comprise 10-15 parts of hollow floating beads, preferably 12-14 parts, and more preferably 13 parts. In the invention, the particle size of the hollow floating bead is preferably 80-120 meshes. In the invention, the hollow floating beads are thin-wall hollow spherical particles mainly made of silicon and aluminum oxide, the weight is light, and the semi-vacuum cavity can better consume the energy of sound waves to achieve the sound insulation effect.
Based on the mass parts of the cement, the preparation raw material of the recycled aggregate sound insulation mortar provided by the invention comprises 10-15 parts of incinerator slag, preferably 12-14 parts, and more preferably 13 parts. In the invention, the incinerator slag is preferably domestic garbage incinerator slag, and the particle size of the incinerator slag is preferably 50-100 meshes.
Based on the mass parts of the cement, the preparation raw materials of the recycled aggregate sound insulation mortar provided by the invention comprise 10-15 parts, 12-14 parts and more preferably 13 parts of recycled foamed ceramic cutting waste particles. In the invention, the particle size of the regenerated foamed ceramic cutting waste particles is preferably 16-50 meshes. In the invention, the regenerated foamed ceramic cutting waste particles have the characteristics of light weight and porosity.
The building waste regenerated red brick sand, the building waste regenerated aerated brick sand and the regenerated foamed ceramic cutting waste particles are all porous materials, the pore structures of the materials can generate air viscous resistance, and air particles rub when moving in pores, so that sound energy can be converted into heat energy to be dissipated, and the sound insulation effect of the sound insulation mortar is further improved.
Based on the mass parts of the cement, the preparation raw material of the recycled aggregate sound insulation mortar provided by the invention comprises 2-5 parts of latex powder, preferably 3-4 parts, and more preferably 3.5 parts. The latex powder is not specially limited, and the commercially available redispersible latex powder can be selected. In the invention, the latex powder has outstanding bonding strength, can improve the adhesiveness, the breaking strength, the waterproofness, the constructability and the like of the mortar, can enhance the flexibility of the mortar, can reduce the elastic modulus of the mortar, and can improve the sound insulation and noise reduction performance of the mortar.
Based on the mass parts of the cement, the preparation raw material of the recycled aggregate sound insulation mortar provided by the invention comprises 1-5 parts of cellulose ether, preferably 2-4 parts, and more preferably 2.5-3.5 parts. In the present invention, the cellulose ether is preferably a hydroxymethyl methyl cellulose ether having a viscosity of not less than 4000 mPa-s. In the present invention, the cellulose ether has excellent binding properties and acid and alkali resistance, thereby being capable of enhancing the binding properties of the mortar.
Based on the mass parts of the cement, the preparation raw materials of the recycled aggregate sound insulation mortar provided by the invention comprise 0.2-0.3 part of recycled fiber, preferably 0.2-0.25 part, and more preferably 0.22-0.23 part. In the invention, the regenerated fiber is preferably polypropylene fiber, and the length of the regenerated fiber is preferably 2-3 cm, more preferably 2.2-2.6 cm, and further preferably 2.3-2.5 cm. The invention utilizes the regenerated fiber to reduce the cracking of the mortar and improve the strength of the mortar.
Based on the mass parts of the cement, the preparation raw materials of the recycled aggregate sound insulation mortar provided by the invention comprise 0.2-0.3 part of water reducing agent, preferably 0.22-0.28 part, and more preferably 0.25-0.26 part. In the invention, the water reducing agent is preferably a special powder polycarboxylic acid high-efficiency water reducing agent for mortar, the water reducing rate of which is not less than 25%. The invention utilizes the water reducing agent to reduce the water consumption of the mortar and improve the strength of the mortar.
Based on the mass parts of the cement, the preparation raw material of the recycled aggregate sound insulation mortar provided by the invention comprises 30-35 parts of water, preferably 32-34 parts of water; the water is preferably tap water.
In the present invention, the hollow floating beads are preferably commercially available, and other preparation raw materials can be directly obtained from sources well known in the art, and in the present invention, it is preferable that the particle size of the preparation raw materials satisfies the above requirements by pulverization, and the pulverization process is not particularly limited in the present invention, and the particle size requirements can be satisfied by pulverization using a process well known in the art.
The invention provides a preparation method of recycled aggregate sound insulation mortar in the technical scheme, which comprises the following steps:
premixing the cement, the construction waste recycled red brick sand, the construction waste recycled aerated brick sand, the recycled wood particles, the hollow floating beads, the incinerator slag, the recycled foamed ceramic cutting waste particles, the latex powder, the cellulose ether, the recycled fiber and the water reducing agent to obtain a dry powder;
and mixing and stirring the obtained dry powder and water to obtain the recycled aggregate sound insulation mortar.
In the invention, the premixing and the mixing stirring are preferably carried out in a forced concrete mixer, the stirring speed of the forced concrete mixer is not particularly limited, and the preparation raw materials can be uniformly mixed to obtain dry powder. In the present invention, the time of the premixing is preferably 10min, and the stirring time of the mixing and stirring is preferably not less than 10 min.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The raw material ratio is as follows:
30 parts of PO42.5 cement, 30 parts of construction waste regenerated red brick sand (the particle size is 16-50 meshes), 20 parts of construction waste regenerated aerated brick sand (the particle size is 30-100 meshes), 15 parts of regenerated wood particles (the particle size is 18-50 meshes), 15 parts of hollow floating beads (the particle size is 80-120 meshes), 10 parts of incinerator slag (the particle size is 50-100 meshes), 10 parts of regenerated foamed ceramic cutting waste particles (the particle size is 16-50 meshes), 2.5 parts of latex powder, 1 part of hydroxymethyl methyl cellulose ether (the viscosity is not less than 4000), 0.2 part of polypropylene fiber (the length is 2-3 cm), 0.2 part of special mortar powder polycarboxylic acid high-efficiency water reducer (the water reduction rate is not less than 25%), and 30 parts of tap water.
The preparation method comprises the following steps:
sequentially adding the cement, the construction waste recycled red brick sand, the construction waste recycled aerated brick sand, the recycled wood particles, the hollow floating beads, the incinerator slag, the recycled foamed ceramic cutting waste particles, the latex powder, the cellulose ether, the recycled fiber and the water reducing agent into a forced concrete mixer, and premixing for 10min to obtain a dry powder;
and mixing and stirring the obtained dry powder and water for 10min to obtain the recycled aggregate sound insulation mortar.
Performance testing
The sound insulation mortar prepared by the embodiment is paved on a structural floor slab, the thickness is not less than 30mm, and the performance test is carried out according to the JGJ 70-2009 building mortar basic performance test method, GB/T20473-314d, no crack is detected, and the floor impact sound pressure level is 64 dB.
Example 2
The raw material ratio is as follows:
32 parts of PO42.5 cement, 35 parts of construction waste regenerated red brick sand (the particle size is 16-50 meshes), 25 parts of construction waste regenerated aerated brick sand (the particle size is 30-100 meshes), 10 parts of regenerated wood particles (the particle size is 18-50 meshes), 10 parts of hollow floating beads (the particle size is 80-120 meshes), 10 parts of incinerator slag (the particle size is 50-100 meshes), 10 parts of regenerated foamed ceramic cutting waste particles (the particle size is 16-50 meshes), 2 parts of latex powder, 2 parts of hydroxymethyl methyl cellulose ether (the viscosity is not less than 4000), 0.23 part of polypropylene fiber (the length is 2-3 cm), 0.25 part of special mortar powder polycarboxylic acid high-efficiency water reducer (the water reduction rate is not less than 25%), and 33 parts of tap water.
The preparation method is the same as example 1.
Performance testing
The sound insulation mortar prepared by the embodiment is paved on a structural floor, the thickness is not less than 30mm, and the performance test is carried out according to the method described in the embodiment 1, and the result shows that the sound insulation mortar has good workability, the fluidity is 165mm, the bonding strength is 0.32MPa, and the dry density is 1215kg/m314d, no crack was detected and the floor impact sound pressure level was 66 dB.
Example 3
The raw material ratio is as follows:
35 parts of PO42.5 cement, 34 parts of construction waste regenerated red brick sand (the particle size is 16-50 meshes), 23 parts of construction waste regenerated aerated brick sand (the particle size is 30-100 meshes), 13 parts of regenerated wood particles (the particle size is 18-50 meshes), 12 parts of hollow floating beads (the particle size is 80-120 meshes), 15 parts of incinerator slag (the particle size is 50-100 meshes), 13 parts of regenerated foamed ceramic cutting waste particles (the particle size is 16-50 meshes), 2.2 parts of latex powder, 2.5 parts of hydroxymethyl methyl cellulose ether (the viscosity is not less than 4000), 0.3 part of polypropylene fiber (the length is 2-3 cm), 0.3 part of special mortar powder polycarboxylic acid high-efficiency water reducer (the water reduction rate is not less than 25%), and 35 parts of tap water.
The preparation method is the same as example 1.
Performance testing
The sound insulation mortar prepared by the embodiment is paved on a structural floor, the thickness is not less than 30mm, and the performance test is carried out according to the method described in the embodiment 1, and the result shows that the sound insulation mortar has good workability, the fluidity is 160mm, the bonding strength is 0.38MPa, and the dry density is 1210kg/m314d, no crack is detected, and the sound pressure level of floor impact sound is 65 dB.
Example 4
The raw material ratio is as follows:
30 parts of PI42.5 cement, 35 parts of construction waste regenerated red brick sand (the particle size is 16-50 meshes), 25 parts of construction waste regenerated aerated brick sand (the particle size is 30-100 meshes), 10 parts of regenerated wood particles (the particle size is 18-50 meshes), 10 parts of hollow floating beads (the particle size is 80-120 meshes), 10 parts of incinerator slag (the particle size is 50-100 meshes), 10 parts of regenerated foamed ceramic cutting waste particles (the particle size is 16-50 meshes), 2 parts of latex powder, 1.5 parts of hydroxymethyl methyl cellulose ether (the viscosity is not less than 4000), 0.25 part of polypropylene fiber (the length is 2-3 cm), 0.3 part of special mortar powder polycarboxylic acid high-efficiency water reducer (the water reduction rate is not less than 25%), and 31 parts of tap water.
The preparation method is the same as example 1.
Performance testing
The sound insulation mortar prepared by the embodiment is paved on a structural floor, the thickness is not less than 30mm, and the performance test is carried out according to the method described in the embodiment 1, and the result shows that the sound insulation mortar has good workability, the fluidity is 162mm, the bonding strength is 0.38MPa, and the dry density is 1220kg/m314d, no crack was detected, and the floor impact sound pressure level was 67 dB.
Example 5
The raw material ratio is as follows:
32 parts of PII42.5 cement, 33 parts of construction waste regenerated red brick sand (the particle size is 16-50 meshes), 20 parts of construction waste regenerated aerated brick sand (the particle size is 30-100 meshes), 15 parts of regenerated wood particles (the particle size is 18-50 meshes), 12 parts of hollow floating beads (the particle size is 80-120 meshes), 10 parts of incinerator slag (the particle size is 50-100 meshes), 10 parts of regenerated foamed ceramic cutting waste particles (the particle size is 16-50 meshes), 2.5 parts of latex powder, 1.5 parts of hydroxymethyl methyl cellulose ether (the viscosity is not less than 4000), 0.24 part of polypropylene fiber (the length is 2-3 cm), 0.22 part of special mortar powder polycarboxylic acid high-efficiency water reducer (the water reduction rate is not less than 25 percent) and 31 parts of tap water.
The preparation method is the same as example 1.
Performance testing
The sound insulation mortar prepared in the embodiment is paved on a structural floor, the thickness is not less than 30mm, and the performance test is carried out on the sound insulation mortar according to the method in the embodiment 1, and the result shows that the sound insulation mortar has good workability, the fluidity is 163mm, the bonding strength is 0.37MPa, and the dry density is 1215kg/m314d, no crack was detected and the floor impact sound pressure level was 66 dB.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The recycled aggregate sound insulation mortar is characterized by comprising the following preparation raw materials in parts by mass:
30-35 parts of cement; 30-35 parts of construction waste regenerated red brick sand; 20-25 parts of construction waste regenerated aerated brick sand; 10-15 parts of regenerated wood particles; 10-15 parts of hollow floating beads; 10-15 parts of incinerator slag; 10-15 parts of regenerated foamed ceramic cutting waste particles; 2-5 parts of latex powder; 1-5 parts of cellulose ether; 0.2-0.3 part of regenerated fiber; 0.2-0.3 part of a water reducing agent; 30-35 parts of water.
2. The recycled aggregate sound insulation mortar according to claim 1, wherein the cement is portland cement or ordinary portland cement having a compressive strength of not less than 42.5 MPa.
3. The recycled aggregate sound insulation mortar of claim 1, wherein the particle size of the construction waste recycled red brick sand is 16-50 meshes; the grain size of the aerated brick sand regenerated from the construction waste is 30-100 meshes.
4. The recycled aggregate sound insulation mortar according to claim 1, wherein the recycled wood particles have a particle size of 18-50 meshes; the particle size of the hollow floating beads is 80-120 meshes.
5. The recycled aggregate sound insulation mortar according to claim 1, wherein the incineration slag is household garbage incineration slag, and the particle size of the incineration slag is 50-100 meshes.
6. The recycled aggregate sound insulation mortar according to claim 1, wherein the recycled foamed ceramic cutting waste particles have a particle size of 16-50 meshes.
7. The recycled aggregate sound-insulation mortar of claim 1, wherein the cellulose ether is a hydroxymethyl methyl cellulose ether having a viscosity of not less than 4000.
8. The recycled aggregate sound insulation mortar according to claim 1, wherein the recycled fibers are polypropylene fibers, and the length of the recycled fibers is 2-3 cm; the water reducing agent is a special powder polycarboxylate superplasticizer for mortar, and the water reducing rate of the special powder polycarboxylate superplasticizer is not less than 25%.
9. The preparation method of the recycled aggregate sound insulation mortar according to any one of claims 1 to 8, characterized by comprising the following steps:
premixing the cement, the construction waste recycled red brick sand, the construction waste recycled aerated brick sand, the recycled wood particles, the hollow floating beads, the incinerator slag, the recycled foamed ceramic cutting waste particles, the latex powder, the cellulose ether, the recycled fiber and the water reducing agent to obtain a dry powder;
and mixing and stirring the obtained dry powder and water to obtain the recycled aggregate sound insulation mortar.
10. The preparation method according to claim 9, wherein the mixing time of the mixing and stirring is 10min or more.
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| CN113213963A (en) * | 2021-06-26 | 2021-08-06 | 江西陶瓷工艺美术职业技术学院 | Light refractory material prepared from construction waste and preparation method thereof |
| CN115521120A (en) * | 2022-10-09 | 2022-12-27 | 广西建设职业技术学院 | Sound insulation mortar based on construction waste recycled fine aggregate and industrial waste and preparation method thereof |
| CN115572103A (en) * | 2022-11-10 | 2023-01-06 | 深圳市华越新材料有限公司 | Light construction waste reclaimed sand and production method thereof |
| CN116120012A (en) * | 2023-02-06 | 2023-05-16 | 东北林业大学 | Regenerated waste brick high-temperature modified sound absorption mortar and preparation method thereof |
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