CN111747710A - Sound insulation mortar with construction waste recycled fine aggregate and industrial waste - Google Patents
Sound insulation mortar with construction waste recycled fine aggregate and industrial waste Download PDFInfo
- Publication number
- CN111747710A CN111747710A CN202010664192.1A CN202010664192A CN111747710A CN 111747710 A CN111747710 A CN 111747710A CN 202010664192 A CN202010664192 A CN 202010664192A CN 111747710 A CN111747710 A CN 111747710A
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- China
- Prior art keywords
- parts
- fine aggregate
- sound insulation
- recycled fine
- waste
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Classifications
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
-
- 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
Abstract
The invention relates to sound insulation mortar combining construction waste recycled fine aggregate and industrial waste, which comprises the following components in percentage by mass: 30-35 parts of cement, 90-120 parts of construction waste recycled fine aggregate, 5-10 parts of fly ash, 5-10 parts of slag, 15-20 parts of waste rubber, 10-15 parts of floating beads, 1.5-2.5 parts of cellulose ether, 1-2 parts of fiber and 0.5-1 part of water reducing agent, wherein the water accounts for 16-20% of the total amount of the dry powder. And sequentially adding the dry powder into a stirrer to be uniformly mixed, and adding water and a water reducing agent to be stirred on a construction site for use. The invention has convenient and rapid construction, low comprehensive cost, improved sound insulation performance, no pollution and stable product performance, fully utilizes the construction waste recycled fine aggregate and industrial wastes of fly ash, slag, waste rubber and floating beads, can consume a large amount of solid wastes and simultaneously relieves the excessive exploitation of natural resources.
Description
Technical Field
The invention relates to floor mortar in the technical field of civil construction materials, in particular to sound insulation mortar combining construction waste recycled fine aggregate and industrial waste.
Background
At present, along with the continuous improvement of the living standard of people, the requirement of people on the sound environment is higher and higher, however, the impact sound insulation performance of the reinforced concrete floor without any sound insulation measure is poorer, and the requirement of residents on the sound environment cannot be met. Environmental complaints caused by poor sound insulation performance of the floor slab increase year by year in the world, and various government departments make relevant requirements on the sound insulation performance of impact sound of the floor slab, and the existing national standard of green building evaluation standard GB/T50378-2014 in China also makes relevant regulations on the impact sound pressure level of the floor slab in bedrooms and living rooms of residential buildings, and the requirements of the high standard and the low limit value are respectively less than or equal to 65dB and less than or equal to 75 dB. However, the impact sound insulation effect of a common 120mm cast-in-place reinforced concrete floor is poor, and the requirements of relevant national standards cannot be met, but a floating floor is usually adopted, an elastic cushion layer is laid on the surface of the reinforced concrete floor, and then concrete with the thickness of about 40mm is poured, so that the impact sound insulation quantity of the floor can be obviously reduced, but the cross operation is more during construction, the elastic layer is easy to damage, an acoustic bridge is formed, the ideal sound insulation effect is difficult to achieve, and the cost is higher. The sound insulation mortar is also commonly used for improving the sound insulation performance of the reinforced concrete floor, the method can achieve obvious improvement effect and is simple in construction process, but the prepared sound insulation mortar is high in cost, so that the popularization and application of the sound insulation mortar are limited to a certain extent, and a large amount of natural resources are consumed in the production and processing process. Therefore, the requirement of the sound insulation material for the building floor is not only good sound insulation performance, but also low production cost, convenient construction, green and environmental protection, so as to improve the product value.
The construction waste is solid waste generated in the process of building construction of a new building or maintenance and dismantling of an old building, such as concrete fragments, masonry, mortar, slag soil and the like. With the rapid development of urbanization in China, about 12-24 hundred million tons of construction waste produced in China in the year accounts for about 70% of urban waste, the utilization rate of the construction waste is only about 5%, the existing treatment mode of the construction waste mainly comprises stacking and landfill, a large amount of land resources are occupied, and the influence on vegetation and underground water is generated, so that the recycling of the construction waste is urgent. After the construction waste is sorted, crushed and screened, natural gravels are 100% replaced for preparing the sound insulation mortar, so that the resource utilization of the construction waste can be expanded, the environmental problem caused by the large-amount emission of the construction waste can be relieved, and the exploitation of natural resources can be saved.
In addition, the fly ash, the slag, the waste rubber and the floating beads are all industrial wastes, the fly ash and the slag partially replace the using amount of cement, and the waste rubber and the floating beads are adopted as sound insulation functional materials, so that the industrial wastes can be utilized on a large scale, the influence on the environment is reduced, and the production cost can be reduced.
Therefore, in order to improve the sound insulation performance of the reinforced concrete floor, facilitate and fast construction, reduce comprehensive cost and protect environment, the invention provides the sound insulation mortar with the cooperation of the construction waste recycled fine aggregate and industrial waste.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the sound insulation mortar combining the construction waste recycled fine aggregate and industrial waste provided by the invention can improve the sound insulation performance, and is convenient and rapid to construct, low in comprehensive cost and environment-friendly.
The invention provides sound insulation mortar with building garbage recycled fine aggregate cooperated with industrial waste, which comprises dry powder, water and a water reducing agent, wherein the dry powder comprises: 30-35 parts of cement, 90-120 parts of construction waste recycled fine aggregate, 5-10 parts of fly ash, 5-10 parts of slag, 15-20 parts of waste rubber, 10-15 parts of floating bead, 2-5 parts of cellulose ether and 1-2 parts of fiber; wherein the water reducing agent accounts for 0.5-1 part, and the water accounts for 16-20% of the total amount of the dry powder.
In other embodiments of the invention, the cement is portland cement or ordinary portland cement having a 28-day compressive strength of greater than 42.5 MPa.
In other embodiments of the invention, the construction waste recycled fine aggregate comprises construction waste recycled fine aggregate with fineness modulus of 2.3-3.0, which is obtained by crushing and screening any one or more of red brick particles, concrete fragments, broken stone and ceramic chips.
In other embodiments of the invention, the fly ash is a fine ash collected from flue gas from coal combustion.
In other embodiments of the invention, the slag is S95 blast furnace slag.
In other embodiments of the present invention, the waste rubber is rubber particles having a particle size of 0.5 to 2mm after processing of waste tires.
In other embodiments of the present invention, the floating beads are spherical particles with smooth surfaces, and the particle size is 40-80 meshes.
In other embodiments of the present invention, the cellulose ether is any one or a combination of two of methyl cellulose ether, hydroxyethyl methyl cellulose ether, carboxymethyl cellulose ether, ethyl cellulose ether, hydroxyethyl cellulose ether, hydroxypropyl methyl cellulose ether.
In other embodiments of the present invention, the fibers are any one or combination of chopped glass fibers, chopped polyester fibers, chopped polypropylene fibers, or wood fibers.
In another embodiment of the present invention, the water reducing agent is one or more of naphthalene sulfonate, melamine, polycarboxylic acid, and lignin based water reducing agents having a water reducing rate of not less than 20%.
The sound insulation mortar provided by the invention has the following effects in cooperation of the recycled fine aggregate of the construction waste and the industrial waste: can improve the sound insulation performance, construction convenience is swift simultaneously, and the combined cost is low, green moreover.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
In the description of the embodiments of the present invention, if a feature is referred to as being "disposed", "fixed", "connected", or "mounted" to another feature, it may be directly disposed, fixed, or connected to the other feature or may be indirectly disposed, fixed, connected, or mounted to the other feature. In the description of the embodiments of the present invention, if "a number" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "greater than", "lower" or "inner" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.
Example one
The sound insulation mortar for the synergy of the construction waste recycled fine aggregate and industrial waste comprises the following raw materials in parts by mass:
portland cement with 28-day compressive strength of more than 42.5 MPa: 35 parts of (B);
the building garbage recycled fine aggregate with fineness modulus of 2.58: 120 parts of (A);
fly ash: 5 parts of a mixture;
s95 blast furnace slag: 8 parts of a mixture;
the particle size of the waste rubber powder is 0.5-2 mm: 15 parts of (1);
floating beads with particle size of 40-80 meshes: 12 parts of (1);
methyl cellulose ether: 2 parts of (1);
chopped polypropylene fiber: 1 part;
polycarboxylic acid series high efficiency water reducing agent: 0.5 part;
tap water: 18% of the total amount of the above dry powder.
The preparation method comprises the following steps: weighing the cement, the construction waste recycled fine aggregate, the fly ash, the slag, the waste rubber powder, the floating beads, the methyl cellulose ether, the chopped polypropylene fiber and the polycarboxylic acid type high-efficiency water reducing agent in corresponding parts according to the proportion, sequentially adding the materials into a forced concrete mixer, uniformly stirring the materials, then adding 18 percent of tap water of the total amount of the dry powder, uniformly stirring the materials, and testing performance indexes, wherein the test data is as follows:
the saturated water rate is 93.5 percent; initial setting time is 2.3 hours; the setting time is 7 hours; the compressive strength is 5.3 MPa; the tensile bond strength was 0.45 MPa.
And paving the construction waste recycled aggregate with the thickness of 30mm on a reinforced concrete floor slab to cooperate with the industrial waste sound insulation mortar, and carrying out a floor impact sound insulation performance test to obtain a weighted impact sound pressure level of 67 dB.
Example two
A sound insulation mortar combining construction waste recycled fine aggregate and industrial waste comprises the following raw materials in parts by mass:
ordinary portland cement with 28-day compressive strength greater than 42.5 MPa: 30 parts of (1);
the building garbage recycled fine aggregate with fineness modulus of 2.58: 90 parts of a mixture;
fly ash: 6 parts of (1);
s95 blast furnace slag: 10 parts of (A);
the particle size of the waste rubber powder is 0.5-2 mm: 18 parts of a mixture;
floating beads with particle size of 40-80 meshes: 15 parts of (1);
methyl cellulose ether: 3 parts of a mixture;
chopped polypropylene fiber: 1.5 parts;
polycarboxylic acid series high efficiency water reducing agent: 0.5 part;
tap water: 17% of the total amount of the above dry powder.
The preparation method comprises the following steps: weighing the cement, the construction waste recycled fine aggregate, the fly ash, the slag, the waste rubber powder, the floating beads, the methyl cellulose ether, the chopped polypropylene fiber and the polycarboxylic acid type high-efficiency water reducing agent in corresponding parts according to the proportion, sequentially adding the materials into a forced concrete mixer, uniformly stirring the materials, then adding 17 percent of tap water of the total amount of the dry powder, uniformly stirring the materials, and testing performance indexes, wherein the test data is as follows:
the water saturation rate is 92.0 percent; initial setting time is 2.2 hours; the setting time is 7 hours; the compressive strength is 5.0 MPa; the tensile bond strength was 0.40 MPa.
And paving the construction waste recycled aggregate with the thickness of 30mm on a reinforced concrete floor slab to cooperate with the industrial waste sound insulation mortar, and carrying out a floor impact sound insulation performance test to obtain a weighted impact sound pressure level of 65 dB.
EXAMPLE III
The sound insulation mortar combining the construction waste regenerated bone fines and industrial wastes comprises the following raw materials in parts by mass:
ordinary portland cement with 28-day compressive strength greater than 42.5 MPa: 35 parts of (B);
the building garbage recycled fine aggregate with fineness modulus of 2.58: 90 parts of a mixture;
fly ash: 8 parts of a mixture;
s95 blast furnace slag: 10 parts of (A);
the particle size of the waste rubber powder is 0.5-2 mm: 18 parts of a mixture;
floating beads with particle size of 40-80 meshes: 12 parts of (1);
methyl cellulose ether: 2.5 parts;
chopped polypropylene fiber: 1.5 parts;
polycarboxylic acid series high efficiency water reducing agent: 0.5 part;
tap water: 19% of the total amount of the above dry powder.
The preparation method comprises the following steps: weighing the cement, the construction waste recycled fine aggregate, the fly ash, the slag, the waste rubber powder, the floating beads, the methyl cellulose ether, the short-cut polypropylene fiber and the polycarboxylic acid high-efficiency water reducing agent in corresponding parts according to the proportion, sequentially adding the cement, the construction waste recycled fine aggregate, the fly ash, the slag, the waste rubber powder, the floating beads, the methyl cellulose ether, the short-cut polypropylene fiber and the polycarboxylic acid high-efficiency water reducing agent into a forced concrete mixer, uniformly stirring, adding tap water accounting for 19 percent of the total amount of the:
the saturated water rate is 93.0 percent; initial setting time is 2.4 hours; the setting time was 7.2 hours; the compressive strength is 5.5 MPa; the tensile bond strength was 0.45 MPa.
And paving the construction waste recycled aggregate with the thickness of 30mm on a reinforced concrete floor slab to cooperate with the industrial waste sound insulation mortar, and carrying out a floor impact sound insulation performance test to obtain a weighted impact sound pressure level of 66 dB.
While the embodiments of the present invention have been described in detail, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. The sound insulation mortar with the synergistic effect of the construction waste recycled fine aggregate and industrial waste is characterized by comprising dry powder, water and a water reducing agent, wherein the dry powder comprises: 30-35 parts of cement, 90-120 parts of construction waste recycled fine aggregate, 5-10 parts of fly ash, 5-10 parts of slag, 15-20 parts of waste rubber, 10-15 parts of floating bead, 2-5 parts of cellulose ether and 1-2 parts of fiber; wherein the water reducing agent accounts for 0.5-1 part, and the water accounts for 16-20% of the total amount of the dry powder.
2. The sound insulation mortar combining the construction waste recycled fine aggregate and the industrial waste as claimed in claim 1, wherein the cement is portland cement or ordinary portland cement having a 28-day compressive strength of more than 42.5 MPa.
3. The sound insulation mortar combining the construction waste recycled fine aggregate and the industrial waste as claimed in claim 1, wherein the construction waste recycled fine aggregate comprises construction waste recycled fine aggregate with fineness modulus of 2.3-3.0, which is obtained by crushing and screening any one or more of red brick particles, concrete fragments, broken stone and ceramic chips.
4. The sound insulation mortar combining construction waste recycled fine aggregate and industrial waste as claimed in claim 1, wherein the fly ash is fine ash collected from flue gas generated after coal combustion.
5. The sound insulation mortar of construction waste recycled fine aggregate in cooperation with industrial waste according to claim 1, wherein the slag is S95 blast furnace slag.
6. The sound insulation mortar combining the construction waste recycled fine aggregate and the industrial waste as claimed in claim 1, wherein the waste rubber is rubber particles with a particle size of 0.5-2mm after processing of waste tires.
7. The sound insulation mortar combining construction waste recycled fine aggregate and industrial waste as claimed in claim 1, wherein the floating beads are spherical particles with smooth surfaces, and the particle size is 40-80 meshes.
8. The sound-insulating mortar containing construction waste recycled fine aggregate and industrial waste, according to claim 1, wherein the cellulose ether is any one or a combination of two of methyl cellulose ether, hydroxyethyl methyl cellulose ether, carboxymethyl cellulose ether, ethyl cellulose ether, hydroxyethyl cellulose ether and hydroxypropyl methyl cellulose ether.
9. The building garbage recycled fine aggregate and industrial waste synergistic sound insulation mortar according to claim 1, wherein the fibers are any one or more of chopped glass fibers, chopped polyester fibers, chopped polypropylene fibers or wood fibers.
10. The sound insulation mortar combining construction waste recycled fine aggregate and industrial waste, according to claim 1, is characterized in that the water reducing agent is one or more of naphthalenesulfonate, melamine-based, polycarboxylic acid-based and lignin-based high-efficiency water reducing agents with a water reducing rate of not less than 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010664192.1A CN111747710A (en) | 2020-07-10 | 2020-07-10 | Sound insulation mortar with construction waste recycled fine aggregate and industrial waste |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010664192.1A CN111747710A (en) | 2020-07-10 | 2020-07-10 | Sound insulation mortar with construction waste recycled fine aggregate and industrial waste |
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Cited By (2)
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| CN114591049A (en) * | 2022-03-29 | 2022-06-07 | 武昌理工学院 | Method for preparing green mortar by using construction waste |
| CN116023096A (en) * | 2022-12-29 | 2023-04-28 | 湖南中邦再生资源科技有限公司 | Regenerated mortar and preparation method thereof |
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