CN113979774B - Light sound insulation mortar and preparation method thereof - Google Patents
Light sound insulation mortar and preparation method thereof Download PDFInfo
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- CN113979774B CN113979774B CN202111466133.4A CN202111466133A CN113979774B CN 113979774 B CN113979774 B CN 113979774B CN 202111466133 A CN202111466133 A CN 202111466133A CN 113979774 B CN113979774 B CN 113979774B
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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
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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
-
- 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
- C04B2201/30—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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses light sound insulation mortar, which comprises cement paste, diatomite, expanded perlite, waste tire rubber powder, fiber filler, a coupling agent, a foaming agent, a stabilizer and a retarder, wherein the sound insulation and heat insulation effects of the mortar are increased on the premise of reducing the loss of mechanical properties by adding a porous material and a high polymer rubber material, and the light sound insulation mortar can be coated on one side of a wall body facing indoors, so that the improvement of living environment is facilitated, and the heat loss of a building is reduced. The invention also discloses a preparation method of the light sound insulation mortar.
Description
The invention discloses light sound insulation mortar, which comprises cement paste, diatomite, expanded perlite, waste tire rubber powder, fiber filler, a coupling agent, a foaming agent, a stabilizer and a retarder, wherein the sound insulation and heat insulation effects of the mortar are increased on the premise of reducing the loss of mechanical properties by adding a porous material and a high polymer rubber material, and the light sound insulation mortar can be coated on one side of a wall body facing indoors, so that the improvement of living environment is facilitated, and the heat loss of a building is reduced. The invention also discloses a preparation method of the light sound insulation mortar.
Technical Field
The invention relates to the technical field of wall mortar, in particular to light sound insulation mortar and a preparation method thereof.
Background
At present, although the light wall board is widely applied to the inner and outer walls of buildings such as factory buildings, office buildings, apartments and dormitories, and has a wide market prospect, the low sound insulation quantity causes certain interference on the work and life of users, and seriously influences the physical and mental health of people. The sound insulation problem of the light wall board is increasingly outstanding, and certain measures need to be taken to solve the problem. The sound insulation performance of the light wall board is poorer than that of a clay brick wall, the sound insulation problem of the light wall board is solved, and the light wall board is a key point for popularization and application.
The quality of the sound environment of the house in China is still a certain distance away from the standard regulation. To child's running, walk and hit structure sound transmission such as beating on the floor, because of the floor simple structure, if the structure floor does not do the processing or according to traditional shop front brick way, the floor impact sound hardly satisfies the requirement of standard, causes the noise interference of upper and lower floor, influences neighborhood harmony and healthy life, therefore the prevention and cure of floor impact sound is a big problem always.
Disclosure of Invention
The invention aims to provide light sound insulation mortar which has the advantages of light weight and good sound insulation effect.
The technical purpose of the invention is realized by the following technical scheme:
the light sound insulation mortar comprises the following components in parts by weight:
200-300 parts of cement
100-200 parts of diatomite
100-200 parts of expanded perlite
100-200 parts of waste tire rubber powder
5-10 parts of coupling agent
5-10 parts of fiber filler
10-20 parts of foaming agent
15-25 parts of stabilizer
4-10 parts of water reducing agent
0.5-1 part of retarder.
By adopting the technical scheme, the diatomite and the expanded perlite have porous structures, and have better sound insulation and heat preservation effects.
The diatomite and the expanded perlite have high water absorption, the heat preservation and noise reduction performance of the sound insulation mortar is reduced due to the fact that a large amount of water is absorbed in the practical application process of the sound insulation mortar, even the phenomena of falling and cracking can occur, a layer of hydrophobic barrier can be formed inside the mortar by adding a proper amount of water reducing agent, the hydrophobic performance of the sound insulation mortar is improved, the durability of the mortar is improved, the initial setting time of the mortar is controlled by adding the retarder, and the problem that the mortar is not firmly combined with a base body due to too fast setting of the mortar is solved.
The foaming agent is added to facilitate the formation of gaps in the sound insulation mortar, so that the sound insulation performance is improved, and the stability of foam pores formed by the foaming agent is improved, the foam pore communication is reduced, and the mechanical property loss is reduced.
The waste tire rubber powder provides polymer for the sound insulation mortar, and the polymer and aggregate form a film with high binding power in the mortar, so that the tensile binding strength of the sound insulation mortar is improved. The waste tire rubber powder can also prevent the sound insulation mortar from generating cracks, blocking the cracks of the mortar and preventing the cracks from expanding, and simultaneously can introduce a certain amount of gas to effectively improve the working performance of the sound insulation mortar.
The addition of the diatomite and the expanded perlite can reduce the crack resistance strength of the sound insulation mortar, the fiber filler has a crack resistance effect, the disorderly distribution in the mortar can prevent cracks from generating, after the cracks are generated, the load of a cracking surface is transferred to the fibers crossing the cracks, the load is transferred to the cement matrix through the bonding of the fibers and the cement matrix, the cracks are generated again when a certain load is reached, and the compressive strength begins to be enhanced under the transmission effect.
Further setting: the waste tire rubber powder is NaOH modified waste tire rubber powder.
By adopting the technical scheme, the rubber particles of the waste tire rubber powder contain zinc stearate which is the main reason for reducing the bonding force of rubber and cement mortar, and NaOH is used for removing the zinc stearate on the surface of the waste tire rubber powder, so that the internal polar bond can be exposed, and the waste tire rubber powder is well bonded with cement colloid, so that the bonding property of the rubber particles and a cement matrix is enhanced, and the aim of improving the strength of the mortar is fulfilled.
Further setting: the fiber filler is one or a combination of basalt fiber, polypropylene fiber, kenaf bast fiber and aluminum silicate fiber.
By adopting the technical scheme, the basalt fiber has good high temperature resistance, moisture resistance, acid and alkali erosion resistance and good physical and chemical stability, and is a good heat preservation and insulation material.
Further setting: the fiber filler is kenaf bast fiber, and the limit length of the kenaf bast fiber is 15mm.
By adopting the technical scheme, the kenaf bast fiber has good mechanical properties, can replace synthetic fiber, artificial fiber, steel fiber and the like with high cost when being applied to cement mortar, and can improve the crack resistance of the cement mortar while realizing large-scale and industrial utilization of waste kenaf straws.
Further setting: the expanded perlite is closed cell expanded perlite.
Through adopting above-mentioned technical scheme, the obturator expanded perlite that adopts the gypsum cladding is inside porous, and the cladding of surface obturator has the expanded perlite granule of gypsum, and this kind has increased expanded perlite's intensity, has improved the condition of absorbing water, and it is thermal-insulated effectual to keep warm to its affinity with inorganic mortar is fine, combines firmly.
Further setting: the foaming agent is hydrogen peroxide, and the stabilizing agent is calcium stearate.
By adopting the technical scheme, the hydrogen peroxide has oxidation-reduction property, the oxidation product is oxygen, the hydrogen peroxide is unstable, slow decomposition reaction can be carried out at normal temperature to generate oxygen and water, and the reaction can be accelerated under the condition of heating or adding a catalyst. The stabilizer is calcium stearate which has good dispersibility and hydrophobicity, is adhered to the wall of the oxygen bubbles and reduces the liquid discharge rate, and the good hydrophobicity enables the bubbles to be dispersed more uniformly and independently, so that the probability of forming communicating holes is reduced, and the bubbles generated by hydrogen peroxide are more stable.
Further setting: the coupling agent is KH550 silane coupling agent.
By adopting the technical scheme, the rubber powder modified by the coupling agent is doped into the cement mortar, and the hydrolyzable group of the coupling agent can be bonded with the hydroxyl group of the hydration product of the coupling agent, so that the surface of the waste rubber powder becomes hydrophilic, and simultaneously, the active epoxy group is grafted on the surface of the waste rubber powder, thereby enhancing the interface bonding capability of the waste rubber powder and the cement mortar and achieving the purpose of improving the strength of the mortar.
Further setting: the water reducing agent is a polycarboxylic acid water reducing agent, and the retarder is a molasses retarder.
By adopting the technical scheme, the polar groups of the polycarboxylate superplasticizer molecules and adsorption points on the surfaces of cement particles act to form a thicker and continuous adsorption layer to play a good dispersion role, and when the polycarboxylate superplasticizer and molasses act synergistically, the molasses molecules are smaller and are more easily adsorbed on the surfaces of the cement particles, so that the molasses occupies adsorption points of a part of polycarboxylate superplasticizer on the surfaces of the cement particles, the action time of the polycarboxylate superplasticizer is shortened, and the control requirements of construction engineering construction on the concrete setting time and hydration heat release rate are met.
Further setting: the light sound insulation mortar comprises the following components in parts by weight:
280 parts of cement paste
150 portions of diatomite
150 portions of expanded perlite
100 portions of waste tire rubber powder
KH-550 coupling agent 8 parts
Fiber filler 8 parts
15 parts of hydrogen peroxide
20 portions of calcium stearate
6 parts of polycarboxylic acid water reducing agent
1 part of molasses retarder.
Another purpose of the invention is to provide a preparation method of the lightweight sound insulation mortar, which has advantages.
The technical purpose of the invention is realized by the following technical scheme:
a preparation method of light sound insulation mortar comprises the following steps:
the method comprises the following steps: weighing the components in parts by weight;
step two: pretreating waste tire rubber powder by a coupling agent;
step three: adding a small amount of expanded perlite into dry components such as diatomite, treated waste tire rubber powder, cement, fiber filler and the like, and uniformly stirring under a dry state to obtain premixed mortar;
step four: pouring the premixed mortar into a cement mortar stirrer, adding water while stirring, and adding a foaming agent, a stabilizer, a water reducing agent, a retarder and the residual expanded perlite while stirring;
step five: the consistency of the sound insulation mortar is controlled to be 70mm-90mm, and the light sound insulation mortar is obtained after the consistency standard is reached.
Detailed Description
Example 1: the light sound insulation mortar comprises the following components in parts by weight:
300 portions of cement
100 portions of diatomite
125 portions of expanded perlite
Waste tire rubber powder 175 parts
10 portions of coupling agent
5 parts of fiber filler
18 portions of foaming agent
18 portions of stabilizer
8 portions of water reducing agent
0.7 part of a retarder,
wherein the expanded perlite adopts gypsum modified closed-cell expanded perlite, the waste tire rubber powder is pretreated by sodium hydroxide, the coupling agent adopts KH-550 silane coupling agent, the fiber filler adopts basalt fiber, the foaming agent adopts hydrogen peroxide, the stabilizing agent adopts calcium stearate, the water reducing agent adopts polycarboxylic acid water reducing agent, the retarder adopts molasses retarder,
the preparation method comprises the following steps:
the method comprises the following steps: weighing the components in parts by weight;
step two: pretreating waste tire rubber powder by a coupling agent;
step three: uniformly stirring diatomite, the treated waste tire rubber powder, cement, a fibrous filler and 10% by weight of expanded perlite in a dry state to obtain premixed mortar;
step four: pouring the premixed mortar into a cement mortar stirrer, adding water while stirring, and adding the foaming agent, the stabilizing agent, the water reducing agent, the retarder and the remaining 90% of expanded perlite while stirring;
step five: the consistency of the sound insulation mortar is controlled to be 70mm, and the light sound insulation mortar is obtained after the consistency standard is reached.
Example 2: the light sound insulation mortar comprises the following components in parts by weight:
250 portions of cement
Diatomite 175 parts
100 portions of expanded perlite
125 portions of waste tire rubber powder
Coupling agent 5 parts
Fibrous Filler 7 parts
20 portions of foaming agent
15 portions of stabilizer
Water reducing agent 7 parts
0.6 part of a retarder,
wherein the expanded perlite adopts gypsum modified closed-cell expanded perlite, the waste tire rubber powder is pretreated by sodium hydroxide, the coupling agent adopts KH-550 silane coupling agent, the fiber filler adopts basalt fiber, the foaming agent adopts hydrogen peroxide, the stabilizing agent adopts calcium stearate, the water reducing agent adopts polycarboxylic acid water reducing agent, the retarder adopts molasses retarder,
the preparation method comprises the following steps:
the method comprises the following steps: weighing the components in parts by weight;
step two: pretreating waste tire rubber powder by a coupling agent;
step three: uniformly stirring diatomite, the treated waste tire rubber powder, cement, a fibrous filler and 10% by weight of expanded perlite in a dry state to obtain premixed mortar;
step four: pouring the premixed mortar into a cement mortar stirrer, adding water while stirring, and adding a foaming agent, a stabilizer, a water reducing agent, a retarder and the remaining 90% of expanded perlite while stirring;
step five: the consistency of the sound insulation mortar is controlled to be 75mm, and the light sound insulation mortar is obtained after the consistency standard is reached.
Example 3: the light sound insulation mortar comprises the following components in parts by weight:
280 portions of cement
150 portions of diatomite
150 portions of expanded perlite
100 portions of waste tire rubber powder
Coupling agent 8 parts
Fiber filler 8 parts
15 portions of foaming agent
20 portions of stabilizer
6 parts of water reducing agent
1 part of a retarder, namely 1 part of a retarder,
wherein the expanded perlite adopts gypsum modified closed-cell expanded perlite, the waste tire rubber powder is pretreated by sodium hydroxide, the coupling agent adopts KH-550 silane coupling agent, the fiber filler adopts basalt fiber, the foaming agent adopts hydrogen peroxide, the stabilizing agent adopts calcium stearate, the water reducing agent adopts polycarboxylic acid water reducing agent, the retarder adopts molasses retarder,
the preparation method comprises the following steps:
the method comprises the following steps: weighing the components in parts by weight;
step two: pretreating waste tire rubber powder by a coupling agent;
step three: evenly stirring diatomite, the treated waste tire rubber powder, cement, a fiber filler and 10% by weight of expanded perlite in a dry state to obtain premixed mortar;
step four: pouring the premixed mortar into a cement mortar stirrer, adding water while stirring, and adding a foaming agent, a stabilizer, a water reducing agent, a retarder and the remaining 90% of expanded perlite while stirring;
step five: the consistency of the sound insulation mortar is controlled to be 80mm, and the light sound insulation mortar is obtained after the consistency standard is reached.
Example 4: the light sound insulation mortar comprises the following components in parts by weight:
200 portions of cement
200 portions of diatomite
Expanded perlite 175 parts
Waste tyre rubber powder 150 parts
Coupling agent 6 parts
9 portions of fiber filler
Foaming agent 12 parts
22 portions of stabilizer
10 portions of water reducing agent
0.8 part of a retarder,
wherein the expanded perlite adopts gypsum modified closed-cell expanded perlite, the waste tire rubber powder is pretreated by sodium hydroxide, the coupling agent adopts KH-550 silane coupling agent, the fiber filler adopts basalt fiber, the foaming agent adopts hydrogen peroxide, the stabilizing agent adopts calcium stearate, the water reducing agent adopts polycarboxylic acid water reducing agent, the retarder adopts molasses retarder,
the preparation method comprises the following steps:
the method comprises the following steps: weighing the components in parts by weight;
step two: pretreating waste tire rubber powder by a coupling agent;
step three: uniformly stirring diatomite, the treated waste tire rubber powder, cement, a fibrous filler and 10% by weight of expanded perlite in a dry state to obtain premixed mortar;
step four: pouring the premixed mortar into a cement mortar stirrer, adding water while stirring, and adding a foaming agent, a stabilizer, a water reducing agent, a retarder and the remaining 90% of expanded perlite while stirring;
step five: the consistency of the sound insulation mortar is controlled to be 85mm, and the light sound insulation mortar is obtained after the consistency standard is reached.
Example 5: the light sound insulation mortar comprises the following components in parts by weight:
230 portions of cement
Diatomite 125 portions
200 portions of expanded perlite
200 portions of waste tire rubber powder
Coupling agent 7 parts
10 portions of fiber filler
10 portions of foaming agent
25 portions of stabilizer
4 portions of water reducing agent
0.5 part of a retarder,
wherein the expanded perlite adopts gypsum modified closed-cell expanded perlite, the waste tire rubber powder is pretreated by sodium hydroxide, the coupling agent adopts KH-550 silane coupling agent, the fiber filler adopts basalt fiber, the foaming agent adopts hydrogen peroxide, the stabilizing agent adopts calcium stearate, the water reducing agent adopts polycarboxylic acid water reducing agent, the retarder adopts molasses retarder,
the preparation method comprises the following steps:
the method comprises the following steps: weighing the components in parts by weight;
step two: pretreating waste tire rubber powder by a coupling agent;
step three: uniformly stirring diatomite, the treated waste tire rubber powder, cement, a fibrous filler and 10% by weight of expanded perlite in a dry state to obtain premixed mortar;
step four: pouring the premixed mortar into a cement mortar stirrer, adding water while stirring, and adding a foaming agent, a stabilizer, a water reducing agent, a retarder and the remaining 90% of expanded perlite while stirring;
step five: the consistency of the sound insulation mortar is controlled to be 90mm, and the light sound insulation mortar is obtained after the consistency standard is reached.
Comparative example 1: the light sound insulation mortar comprises the following components in parts by weight:
280 portions of cement
150 portions of diatomite
150 portions of expanded perlite
Coupling agent 8 parts
Fiber filler 8 parts
15 portions of foaming agent
20 portions of stabilizer
6 parts of water reducing agent
1 part of a retarder, namely 1 part of a retarder,
wherein the expanded perlite adopts gypsum modified closed-cell expanded perlite, the coupling agent adopts KH-550 silane coupling agent, the fiber filler adopts basalt fiber, the foaming agent adopts hydrogen peroxide, the stabilizing agent adopts calcium stearate, the water reducing agent adopts polycarboxylic acid water reducing agent, the retarder adopts molasses retarder,
the preparation method comprises the following steps:
the method comprises the following steps: weighing the components in parts by weight;
step two: uniformly stirring diatomite, cement, a fibrous filler and 10% by weight of expanded perlite in a dry state to obtain premixed mortar;
step three: pouring the premixed mortar into a cement mortar stirrer, adding water while stirring, and adding a foaming agent, a stabilizer, a water reducing agent, a retarder and the remaining 90% of expanded perlite while stirring;
step four: the consistency of the sound insulation mortar is controlled to be 80mm, and the light sound insulation mortar is obtained after the consistency standard is reached.
Comparative example 2: the light sound insulation mortar comprises the following components in parts by weight:
280 portions of cement
150 portions of diatomite
150 portions of expanded perlite
100 portions of waste tire rubber powder
Coupling agent 8 parts
Fiber filler 8 parts
6 parts of water reducing agent
1 part of a retarder, namely 1 part of a retarder,
wherein the expanded perlite adopts gypsum modified closed-cell expanded perlite, the waste tire rubber powder is pretreated by sodium hydroxide, the coupling agent adopts KH-550 silane coupling agent, the fiber filler adopts basalt fiber, the water reducing agent adopts polycarboxylic acid water reducing agent, the retarder adopts molasses retarder,
the preparation method comprises the following steps:
the method comprises the following steps: weighing the components in parts by weight;
step two: pretreating waste tire rubber powder by a coupling agent;
step three: uniformly stirring diatomite, the treated waste tire rubber powder, cement, a fibrous filler and 10% by weight of expanded perlite in a dry state to obtain premixed mortar;
step four: pouring the premixed mortar into a cement mortar stirrer, adding water while stirring, and adding a water reducing agent, a retarder and the remaining 90% of expanded perlite while stirring;
step five: the consistency of the sound insulation mortar is controlled to be 80mm, and the light sound insulation mortar is obtained after the consistency standard is reached.
Comparative example 3: and (4) common mortar.
And (3) testing mechanical properties:
referring to the cement mortar strength test method, the test block size was 40 mm × 40 mm × 160 mm, the mortar was molded in a mortar mold after being stirred in a stirrer, demolded after curing 24 h in a standard curing box, and then cured for 28 days at 20 ± 3 ℃, 95% relative humidity and 55 ℃, 95% relative humidity, and the compressive strength and the flexural strength were tested by a servo universal tester and recorded in table 1 below.
And (3) sound insulation performance test:
the mortar of the examples and the mortar of the comparative examples are prepared into a plate of 2.8m3.6m2mm, the performance of the mortar for insulating solid-borne noise is characterized by 1/3 octave impact sound pressure level and impact sound insulation single value evaluation, the test method is carried out according to GBJ75-84 building sound insulation measurement specification, the sound insulation of 1/3 octave center frequency of 50-3150HZ is tested, and the average sound insulation is calculated and recorded to the following table 1.
Testing the heat preservation performance:
the thermal conductivity of the sound insulation mortar is measured by referring to GB/T10294-2008 'measurement of steady-state thermal resistance and related characteristics of heat insulation material', and is recorded in the following table 1.
Table 1 table of performance test results
As can be seen from the above table, the examples of the present invention and comparative examples 1 to 2 have improved sound insulation and reduced thermal conductivity, compared to the ordinary mortar of comparative example 3; as can be seen from the comparison between the example 3 and the comparative example 1, the waste tire rubber powder has the promotion effect on the performance of the mortar, is favorable for firmly combining all the components and improves the mechanical performance; from the comparison of example 3 with comparative example 2, it can be seen that at the addition amount of the foaming agent in the present application, the generated cells further enhance the sound and heat insulation effect, but have less influence on the mechanical properties.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (8)
1. The light sound insulation mortar is characterized by comprising the following components in parts by weight:
200-300 parts of cement paste
100-200 parts of diatomite
100-200 parts of expanded perlite
100-200 parts of waste tire rubber powder
5-10 parts of coupling agent
5-10 parts of fiber filler
10-20 parts of foaming agent
15-25 parts of stabilizer
4-10 parts of water reducing agent
0.5-1 part of retarder
The waste tire rubber powder is NaOH modified waste tire rubber powder.
2. The lightweight acoustic mortar of claim 1, wherein the fibrous filler is a combination of one or more of basalt fibers, polypropylene fibers, kenaf bast fibers, and aluminum silicate fibers.
3. The lightweight sound insulation mortar of claim 2, wherein the fiber filler is kenaf bast fiber, and the limit length of the kenaf bast fiber is 15mm.
4. The lightweight acoustic mortar of claim 1, wherein the expanded perlite is a closed cell expanded perlite.
5. The light sound insulation mortar of claim 1, wherein the foaming agent is hydrogen peroxide, and the stabilizer is calcium stearate.
6. The lightweight sound insulation mortar of claim 1, wherein the coupling agent is a KH550 silane coupling agent.
7. The lightweight acoustic mortar of claim 1, wherein the water reducer is a polycarboxylic acid water reducer and the set retarder is a molasses set retarder.
8. The light sound insulation mortar of claim 1, wherein the light sound insulation mortar comprises the following components in parts by weight:
280 parts of cement paste
150 portions of diatomite
150 portions of expanded perlite
100 portions of waste tire rubber powder
KH-550 coupling agent 8 parts
Fibrous filler 8 parts
15 parts of hydrogen peroxide
20 portions of calcium stearate
6 parts of polycarboxylic acid water reducing agent
1 part of molasses retarder.
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| CN116023091A (en) * | 2022-12-12 | 2023-04-28 | 振中建设集团有限公司 | Regenerated rubber thermal insulation mortar and preparation process and application thereof |
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| CN106242391A (en) * | 2016-07-20 | 2016-12-21 | 绍兴职业技术学院 | A kind of energy-conservation phase change anticracking polymer special type mortar and preparation method thereof |
| CN108484204A (en) * | 2018-04-03 | 2018-09-04 | 合肥宸翊商贸有限公司 | Lightweight concrete wall with self-insurance temp effect |
| CN108484215A (en) * | 2018-06-25 | 2018-09-04 | 广东复特新型材料科技有限公司 | A kind of heat preservation and soundproof mortar and preparation method thereof |
| CN108863224A (en) * | 2018-07-25 | 2018-11-23 | 中国十七冶集团有限公司 | A kind of flooring heat insulating and sound insulating mortar |
| CN111620625A (en) * | 2020-05-28 | 2020-09-04 | 广东复特新型材料科技有限公司 | Compression-resistant heat-insulation mortar without hollowing |
| CN112321259A (en) * | 2020-11-17 | 2021-02-05 | 上海群宝建材有限公司 | Heat-insulating concrete and preparation method thereof |
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2021
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Effective date of registration: 20230713 Address after: No. 9, Datong Road, Wuyi Town, Nanqiao District, Chuzhou City, Anhui Province 239000 Patentee after: Anhui Yuyi Sound Insulation Materials Co.,Ltd. Address before: 210000 No.1, No.2 Road, Taiping Village Industrial Park, Longtan street, Qixia District, Nanjing City, Jiangsu Province Patentee before: Jiangsu Yuyi Environmental Protection Technology Co.,Ltd. |