CN110790546A - Environment-friendly composite building material based on ceramic waste and preparation method thereof - Google Patents

Environment-friendly composite building material based on ceramic waste and preparation method thereof Download PDF

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Publication number
CN110790546A
CN110790546A CN201911062334.0A CN201911062334A CN110790546A CN 110790546 A CN110790546 A CN 110790546A CN 201911062334 A CN201911062334 A CN 201911062334A CN 110790546 A CN110790546 A CN 110790546A
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China
Prior art keywords
ceramic
percent
composite building
environment
friendly composite
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CN201911062334.0A
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Chinese (zh)
Inventor
熊焱
吴迪
房帅
唐英丰
吴波
肖大威
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South China University of Technology SCUT
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South China University of Technology SCUT
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Priority to CN201911062334.0A priority Critical patent/CN110790546A/en
Publication of CN110790546A publication Critical patent/CN110790546A/en
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00017Aspects relating to the protection of the environment
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The invention discloses an environment-friendly composite building material based on ceramic waste and a preparation method thereof, wherein the composite building material comprises the following raw materials in percentage by mass: cement: 17.57-24.60%; fly ash: 0-43.01%; mineral powder: 0 to 20.64 percent; ceramic powder: 0-40.98%; quartz sand: 0 to 20.28 percent; ceramic sand: 0 to 19.34 percent; water: 16.59-21.52%; water reducing agent: 0.07-0.21%; thickening agent: 0 to 0.03 percent; PVA fiber: 1.41-1.48%, and the content of the ceramic powder and the ceramic sand is not 0 at the same time. The invention has the advantages of convenient raw material acquisition, simple preparation method, excellent tensile and compressive properties, solving the problems of land occupation, ecological environment damage and low treatment and utilization degree of ceramic waste material stacking, and having outstanding technical, economic and environmental benefits.

Description

Environment-friendly composite building material based on ceramic waste and preparation method thereof
Technical Field
The invention belongs to the field of resource utilization, environmental protection and building materials, and particularly relates to an environment-friendly composite building material based on ceramic waste and a preparation method thereof.
Background
The traditional concrete material taking cement as a main cementing material has the advantages of high compressive strength, easiness in construction, good durability and the like, and is widely applied to the field of building engineering. However, the material has low tensile strength, poor deformability and large production energy consumption. In recent years, with the deepening of sustainable development concepts, the industry has increasingly strong demand for environment-friendly building materials with high ductility and low energy consumption.
China is a large country for ceramic production, the annual output and export of ceramics are at the top of the world, and ceramic waste materials generated in the production and use processes are more and more. According to statistics, the annual emission of the ceramic waste in China is over 1800 million tons, and most of the ceramic waste is discarded in a landfill area. The ceramic waste has high hardness, contains a large amount of silicate minerals, and has good skeleton effect and pozzolanic activity.
Disclosure of Invention
Aiming at the problems, the invention provides the environment-friendly composite building material based on the ceramic waste material and the preparation method thereof, wherein the environment-friendly composite building material has excellent mechanical properties and simple construction process. The composite building material is composed of efficient active materials such as cement, fly ash, mineral powder and ceramic powder, fine aggregates such as quartz sand and ceramic sand, water, a water reducing agent, a thickening agent, fibers and the like.
The purpose of the invention is realized by at least one of the following technical solutions.
An environment-friendly composite building material based on ceramic waste is composed of the following raw materials in percentage by mass:
cement: 17.57-24.60%; fly ash: 0-43.01%; mineral powder: 0 to 20.64 percent; ceramic powder: 0-40.98%; quartz sand: 0 to 20.28 percent; ceramic sand: 0 to 19.34 percent; water: 16.59-21.52%; water reducing agent: 0.07-0.21%; thickening agent: 0 to 0.03 percent; fiber: 1.41 to 1.48 percent.
Further, the cement is portland cement.
Further, the fly ash is first-grade fly ash.
Further, the mineral powder is blast furnace slag micro powder.
Further, the ceramic powder is ceramic polishing powder generated in the process of polishing in the production of ceramics.
Further, the quartz sand is quartz sand with the fineness of 80-200 meshes.
Further, the ceramic sand is ceramic machine-made sand obtained by crushing and screening ceramic waste fragments, and the fineness of the ceramic machine-made sand is 80-200 meshes.
Further, the water reducing agent is a polycarboxylic acid water reducing agent.
Further, the thickening agent is hydroxypropyl methyl cellulose.
Further, the fibers are PVA, PE, PP, PBO or basalt fibers.
The invention also provides a preparation method of the environment-friendly composite building material based on the ceramic waste, which comprises the following steps:
(1) weighing raw materials according to the mass ratio;
(2) when the water reducing agent is solid, mixing substances except water and fibers in the raw materials, pouring the mixture into a stirrer, and stirring to uniformly mix the raw materials; when the water reducing agent is liquid, mixing substances except water, the water reducing agent and the fiber in the raw materials, pouring the mixture into a stirrer for stirring, fully mixing the water reducing agent and the water after the raw materials are uniformly mixed, and pouring the mixture into the stirrer for stirring;
(3) slowly adding PVA fiber into a stirrer until the fiber is fully dispersed; thus obtaining the environment-friendly composite building material based on the ceramic waste.
In the preparation process, the type of the used stirrer is not limited, and the cement mortar stirrer and the concrete stirrer can be used for preparing the environment-friendly composite building material. If a conventional concrete mixer is used, the mixing time is appropriately prolonged as the case may be.
The invention has the beneficial effects that:
(1) the invention has ultrahigh ductility, convenient raw material acquisition, simple and efficient preparation process and lower requirements on the preparation environment and site, and a common concrete mixer can also stir and prepare the composite building material.
(2) The water reducing agent and the thickening agent are used in a matching way, so that fiber agglomeration in the mixing process is avoided, the fiber obtains excellent dispersibility in the composite building material, and the crack resistance mechanism of the fiber is fully exerted.
(3) According to the invention, ceramic polishing powder waste generated in ceramic production polishing is used for replacing cement, and ceramic machine-made sand obtained by crushing and screening ceramic waste fragments is used for replacing quartz sand in raw materials, so that the recycling of ceramic waste materials can be improved, the cement consumption of the composite building material is greatly reduced, the manufacturing cost of the composite building material is greatly reduced, the emission of carbon dioxide in the cement production process can be effectively reduced, and the ceramic polishing powder waste has important significance for the conversion of the building material to green, environment-friendly and environment-friendly.
(4) According to the invention, a large amount of ceramic powder and ceramic sand are used as raw materials, so that ceramic waste can be greatly consumed, and the problems of land occupation, ecological environment damage and low treatment and utilization degree of ceramic waste stacking are solved, so that the composite building material is more environment-friendly. The composite building material has excellent tensile and compressive properties.
Drawings
FIG. 1 is a schematic view showing a cubic compression test and a size of the ceramic waste-based eco-friendly composite building material according to the present invention;
FIG. 2 is a schematic view of uniaxial tensile test and dimension of the ceramic scrap-based eco-friendly composite building material according to the present invention (side view (a) on the left side and front view (b) on the right side);
FIG. 3 is a schematic view showing a uniaxial tensile stress-strain curve of the eco-friendly composite building material according to example 1 of the present invention;
FIG. 4 is a schematic view showing a uniaxial tensile stress-strain curve of the eco-friendly composite building material according to example 2 of the present invention;
FIG. 5 is a schematic view showing a uniaxial tensile stress-strain curve of the eco-friendly composite building material according to example 3 of the present invention.
FIG. 6 is a schematic view showing a uniaxial tensile stress-strain curve of the eco-friendly composite building material according to example 4 of the present invention;
FIG. 7 is a schematic view showing a uniaxial tensile stress-strain curve of the eco-friendly composite building material according to example 5 of the present invention;
FIG. 8 is a schematic view showing a uniaxial tensile stress-strain curve of the eco-friendly composite building material according to example 6 of the present invention;
FIG. 9 is a schematic view showing a uniaxial tensile stress-strain curve of the eco-friendly composite building material according to example 7 of the present invention;
FIG. 10 is a schematic view showing a uniaxial tensile stress-strain curve of the eco-friendly composite building material according to example 8 of the present invention;
FIG. 11 is a schematic view showing a uniaxial tensile stress-strain curve of the eco-friendly composite building material according to example 9 of the present invention.
Wherein: 1-loading pressure head, 2-U-shaped tensile fixture, 3-environment-friendly composite building material cubic compression test piece and 4-environment-friendly composite building material dog-bone-shaped tensile test piece.
Detailed Description
The present invention will be further illustrated with reference to the following examples, but the present invention is not limited to the following examples.
The following examples are shown in figure 1 for uniaxial tensile testing and dimensions and figure 2 for cubic compression testing and dimensions.
The cubic compression test piece 3 of the cubic compression test in the embodiment is a cube with the size of 100 × 100mm, and the two ends of the cubic compression test piece 3 are provided with loading indenters 1, which are specifically shown in fig. 1.
The "dog bone" tensile test piece 4 of the uniaxial tensile test described in the examples was a "dog bone" test piece having a thickness of 13mm and a length of 320mm, and was shaped to be wide at both ends and narrow in the middle, with a wide portion of 60mm and a narrow portion of 30mm, as shown in fig. 2.
In the embodiment, the cement is portland cement, the fly ash is first-grade fly ash, the ceramic powder is ceramic polishing powder generated in the ceramic tile polishing process, the quartz sand is quartz sand with the fineness of 80-200 meshes, the ceramic sand is ceramic machine-made sand obtained by crushing and screening ceramic waste fragments, the fineness is 80-200 meshes, and the thickening agent is hydroxypropyl methyl cellulose. The fibers are PVA fibers.
In the embodiment, the water reducing agent is a liquid polycarboxylic acid high-efficiency water reducing agent, and the solid content of the water reducing agent is 20%.
The stirrer used in the embodiment is a JJ-5 type cement mortar stirrer, the low gear of the stirrer is the revolution of the stirring blades at 62 +/-5 revolutions per minute, the rotation is at 140 +/-5 revolutions per minute, and the high gear of the stirrer is the revolution of the stirring blades at 125 +/-10 revolutions per minute, and the rotation is at 285 +/-10 revolutions per minute.
Example 1
An environment-friendly composite building material based on ceramic waste comprises the following raw materials in percentage by mass: cement: 17.58 percent; mineral powder: 0 percent; ceramic powder: 0 percent; quartz sand: 19.34 percent; ceramic sand: 0 percent; water: 20.51 percent; water reducing agent: 0.11 percent; thickening agent: 0.03 percent; PVA fiber: 1.41 percent, and the balance being fly ash.
The preparation method of the environment-friendly composite building material based on the ceramic waste comprises the following steps:
(1) weighing the raw materials according to the mass ratio;
(2) mixing cement, fly ash, quartz sand and a thickening agent, pouring the mixture into a stirrer, and dry-mixing the mixture for 2 to 3 minutes at a low speed;
(3) fully mixing the weighed water reducer with water, pouring the mixture into a stirrer, and stirring for 3-4 minutes at a low speed;
(4) slowly adding PVA fiber into a stirrer, stirring at a low speed for 2-3 minutes, and then stirring at a high speed for 1-2 minutes; and obtaining the environment-friendly composite building material based on the ceramic waste.
And standing the poured test piece indoors for 24 hours, then demolding, immediately putting the test piece into standard curing conditions for curing, wherein the curing period is 28 days. The results are shown in Table 1.
Table 1: mechanical property test results of the test piece obtained in example 1
Note: the activity of the fly ash is not completely excited in 28 days, and the average compression strength of the test piece in example 1 in 90 days can reach 50 MPa.
Example 2
An environment-friendly composite building material based on ceramic waste comprises the following raw materials in percentage by mass:
cement: 17.57 percent; mineral powder: 0 percent; ceramic powder: 20.50 percent; quartz sand: 19.33 percent; ceramic sand: 0 percent; water: 20.50 percent; water reducing agent: 0.15 percent; thickening agent: 0.03 percent; PVA fiber: 1.41 percent, and the balance being fly ash.
Other implementation contents and procedures are the same as those of example 1.
The mechanical test results of the test pieces obtained in this example are shown in table 2, and the test pieces are maintained by standard maintenance for 28 days.
Table 2: mechanical property test results of the test piece obtained in example 2
Example 3
An environment-friendly composite building material based on ceramic waste comprises the following raw materials in percentage by mass:
cement: 17.57 percent; fly ash: 0 percent; mineral powder: 0 percent; ceramic powder: 40.98 percent; quartz sand: 19.32 percent; ceramic sand: 0 percent;
water: 20.49 percent; water reducing agent: 0.20 percent; thickening agent: 0.03 percent; PVA fiber: 1.41 percent.
Other implementation contents and procedures are the same as those of example 1.
The mechanical test results of the test pieces obtained in this example are shown in Table 3, and the test pieces were maintained by standard maintenance for 28 days.
Table 3: mechanical property test results Using test pieces obtained in example 3
Example 4
An environment-friendly composite building material based on ceramic waste comprises the following raw materials in percentage by mass:
cement: 17.58 percent; fly ash: 41.02%; mineral powder: 0 percent; ceramic powder: 0 percent; ceramic sand: 9.67 percent; water: 20.51 percent; water reducing agent: 0.11 percent; thickening agent: 0.03 percent; PVA fiber: 1.41 percent, and the balance of quartz sand.
Other implementation contents and procedures are the same as those of example 1.
The mechanical test results of the test pieces obtained in this example are shown in table 4, and the test pieces are maintained by standard maintenance for 28 days.
Table 4: mechanical property test results of the test piece obtained in example 4
Example 5
The environment-friendly composite building material based on ceramic waste comprises the following raw materials in percentage by mass:
cement: 17.58 percent; fly ash: 41.02%; mineral powder: 0 percent; ceramic powder: 0 percent; quartz sand: 0 percent; ceramic sand: 19.33 percent; water: 20.51 percent; water reducing agent: 0.12 percent; thickening agent: 0.03 percent; PVA fiber: 1.41 percent.
Other implementation contents and procedures are the same as those of example 1.
The mechanical test results of the test pieces obtained in this example are shown in table 5, and the test pieces were maintained by standard maintenance for 28 days.
Table 5: mechanical property test results Using test pieces obtained in example 5
Example 6
The environment-friendly composite building material based on ceramic waste comprises the following raw materials in percentage by mass:
cement: 17.57 percent; fly ash: 0 percent; mineral powder: 0 percent; ceramic powder: 40.98 percent; quartz sand: 0 percent; ceramic sand: 19.32% water: 20.48 percent; water reducing agent: 0.21 percent; thickening agent: 0.03 percent; PVA fiber: 1.41 percent.
Other implementation contents and procedures are the same as those of example 1.
The mechanical test results of the test pieces obtained in this example are shown in table 6, and the test pieces were subjected to standard curing for 28 days.
Table 6: mechanical property test results Using test pieces obtained in example 6
Example 7
The environment-friendly composite building material based on ceramic waste comprises the following raw materials in percentage by mass:
cement: 24.60 percent; fly ash: 36.90 percent; mineral powder: 0 percent; ceramic powder: 0 percent; quartz sand: 15.37 percent; ceramic sand: 0% of water: 21.53 percent; water reducing agent: 0.12 percent; thickening agent: 0 percent; PVA fiber: 1.48 percent.
Other implementation contents and procedures are the same as those of example 1.
The mechanical test results of the test pieces obtained in this example are shown in table 7, and the test pieces were subjected to standard curing for 28 days.
Table 7: mechanical property test results Using test pieces obtained in example 7
Example 8
The environment-friendly composite building material based on ceramic waste comprises the following raw materials in percentage by mass:
cement: 18.44 percent; fly ash: 43.01 percent; mineral powder: 0 percent; ceramic powder: 0 percent; quartz sand: 20.28 percent; ceramic sand: 0 percent; water: 16.59 percent; water reducing agent: 0.17 percent; thickening agent: 0.03 percent; PVA fiber: 1.48 percent.
Other implementation contents and procedures are the same as those of example 1.
The mechanical test results of the test pieces obtained in this example are shown in table 8, and the test pieces were maintained by standard maintenance for 28 days.
Table 8: mechanical property test results Using test pieces obtained in example 8
Example 9
The environment-friendly composite building material based on ceramic waste comprises the following raw materials in percentage by mass:
cement: 17.70 percent; fly ash: 20.63 percent; mineral powder: 20.63 percent; ceramic powder: 0 percent; quartz sand: 19.47%; ceramic sand: 0; water: 20.05 percent; water reducing agent: 0.07 percent; thickening agent: 0.03 percent; PVA fiber: 1.42 percent.
Other implementation contents and procedures are the same as those of example 1.
The mechanical test results of the test pieces obtained in this example are shown in table 9, and the test pieces were subjected to standard curing for 28 days.
Table 9: mechanical property test results Using test pieces obtained in example 9
The above-described examples are examples of the present invention, the numerical values in tables 1 to 9 are the average values of the test results of the test pieces in each example, and the uniaxial tensile stress-strain curves shown in FIGS. 3 to 11 are the test curves of the specific test pieces prepared in examples 1 to 9. . As can be seen from the above tables 1 to 9 and FIGS. 3 to 11, the ceramic scrap-based eco-friendly composite building material according to the present invention has ultra-high ductility and excellent compression resistance. The volcanic ash activity of the ceramic powder is higher than that of the fly ash, so that the compression strength, the initial cracking tensile strength and the ultimate tensile strength of the environment-friendly composite building material can be improved, and the ultimate elongation is reduced; the ceramic sand has the grading similar to that of quartz sand, has no obvious influence on the fluidity and the tension and compression performance of the composite building material, can be used as aggregate of the composite building material, and can reduce the manufacturing cost by 10-20 percent; compared with mineral powder, the ceramic powder is more beneficial to the ductility of building materials; the increase in the proportion of cement and the reduction in the amount of water adversely affect the ultimate elongation of the building material.
The foregoing embodiments are merely illustrative of the principles and effects of the present invention, and the processes and procedures involved in the invention are well known and can be understood by those skilled in the art. It will be appreciated that modifications and variations of the present invention may be devised by those skilled in the art without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims (9)

1. The environment-friendly composite building material based on the ceramic waste is characterized by comprising the following raw materials in percentage by mass: cement: 17.57-24.60%; fly ash: 0-43.01%; mineral powder: 0 to 20.64 percent; ceramic powder: 0-40.98%; quartz sand: 0 to 20.28 percent; ceramic sand: 0 to 19.34 percent; water: 16.59-21.52%; water reducing agent: 0.07-0.21%; thickening agent: 0 to 0.03 percent; fiber: 1.41-1.48%, and the content of the ceramic powder and the ceramic sand is not 0 at the same time.
2. The environment-friendly composite building material according to claim 1, wherein the cement is portland cement.
3. The environment-friendly composite building material according to claim 1, wherein the fly ash is a first-grade fly ash.
4. The environment-friendly composite building material according to claim 1, wherein the ore powder is blast furnace slag micro powder.
5. The environment-friendly composite building material according to claim 1, wherein the ceramic powder is ceramic polishing powder produced when ceramic tiles are polished.
6. The environment-friendly composite building material according to claim 1, wherein the silica sand is silica sand having a fineness of 80-200 mesh.
7. The environment-friendly composite building material according to claim 1, wherein the ceramic sand is ceramic machine-made sand obtained by crushing and screening ceramic waste fragments, and the fineness is 80-200 meshes.
8. The environment-friendly composite building material according to claim 1, wherein the water reducing agent is a polycarboxylic acid water reducing agent; the thickening agent is hydroxypropyl methyl cellulose; the fiber is PVA, PE, PP, PBO or basalt fiber.
9. The method for preparing the environment-friendly composite building material according to any one of claims 1 to 8, comprising the steps of:
(1) weighing raw materials according to the mass ratio;
(2) when the water reducing agent is solid, mixing substances except water and fibers in the raw materials, pouring the mixture into a stirrer, and stirring to uniformly mix the raw materials; when the water reducing agent is liquid, mixing substances except water, the water reducing agent and the fiber in the raw materials, pouring the mixture into a stirrer for stirring, fully mixing the water reducing agent and the water after the raw materials are uniformly mixed, and pouring the mixture into the stirrer for stirring;
(3) slowly adding the fibers into the stirrer until the fibers are fully dispersed; obtaining the environment-friendly composite building material based on the ceramic waste.
CN201911062334.0A 2019-11-02 2019-11-02 Environment-friendly composite building material based on ceramic waste and preparation method thereof Pending CN110790546A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111549937A (en) * 2020-04-10 2020-08-18 哈尔滨工业大学 Environment-friendly high-ductility heat-preservation heat-insulation combined masonry wall structure and construction method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103396064A (en) * 2013-08-14 2013-11-20 黄贺明 Green environment-friendly light-weight high-strength powder concrete
US20150206608A1 (en) * 2012-09-03 2015-07-23 Helse Stavanger Hf Radiation absorbing composition
CN108947339A (en) * 2018-06-01 2018-12-07 盐城金凯新型建材科技有限公司 A kind of dry-mixed mortar environment-friendly preparation process

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150206608A1 (en) * 2012-09-03 2015-07-23 Helse Stavanger Hf Radiation absorbing composition
CN103396064A (en) * 2013-08-14 2013-11-20 黄贺明 Green environment-friendly light-weight high-strength powder concrete
CN108947339A (en) * 2018-06-01 2018-12-07 盐城金凯新型建材科技有限公司 A kind of dry-mixed mortar environment-friendly preparation process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111549937A (en) * 2020-04-10 2020-08-18 哈尔滨工业大学 Environment-friendly high-ductility heat-preservation heat-insulation combined masonry wall structure and construction method thereof

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