CN113955989A - Preparation process of renewable lightweight concrete - Google Patents
Preparation process of renewable lightweight concrete Download PDFInfo
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- CN113955989A CN113955989A CN202111214893.6A CN202111214893A CN113955989A CN 113955989 A CN113955989 A CN 113955989A CN 202111214893 A CN202111214893 A CN 202111214893A CN 113955989 A CN113955989 A CN 113955989A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0091—Organic co-binders for mineral binder compositions
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/12—Set accelerators
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/304—Air-entrainers
-
- 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
- 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
-
- 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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- 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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a preparation process of renewable lightweight concrete, which comprises the following raw materials in parts by weight: 200 parts of water-120-organic silicon, according to the invention, the traditional aggregate is replaced by the waste gas concrete, and the additive is added, so that the prepared concrete has light weight, the strength is enhanced along with the addition of the auxiliary materials, and the concrete has the advantages of low cost, reasonable collocation, convenience in use and convenience in popularization and use.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to a preparation process of reproducible lightweight concrete.
Background
The regenerated concrete is prepared by crushing, cleaning and grading waste concrete blocks, mixing the crushed, cleaned and graded waste concrete blocks with a grading agent according to a certain proportion, partially or completely replacing natural aggregates (mainly coarse aggregates) such as sand stones and the like, and adding cement, water and the like. The recycled concrete can be combined into aggregates in the following cases: all aggregates are regenerated aggregates; the coarse aggregate is regenerated aggregate, and the fine aggregate is natural sand; the coarse aggregate is natural gravel or cobble, and the fine aggregate is regenerated aggregate; the reclaimed aggregate replaces part of the coarse aggregate or the fine aggregate.
In the prior art, the recycled concrete prepared by adding the recycled aggregate has low strength and cannot adapt to various use environments, so a preparation process of the recycled lightweight concrete is provided for solving the problems.
Disclosure of Invention
Based on the technical problems that the strength of the recycled concrete prepared by adding the recycled aggregate is not high and the recycled concrete can not adapt to various use environments in the background technology, the invention provides a preparation process of the recycled lightweight concrete.
The invention provides a preparation process of renewable lightweight concrete, which comprises the following raw materials in parts by weight: 120-200 parts of water, 100-180 parts of cement, 80-150 parts of sand, 50-80 parts of expanded polystyrene, 50-70 parts of phenyleneffersoid fine aggregate, 90-150 parts of recycled aggregate, 10-20 parts of water reducer, 15-25 parts of accelerator, 5-15 parts of binder and 10-25 parts of air entraining agent.
Preferably, the cement is portland cement in particular, and the sand is sand with an average particle size of 0.15-2 mm.
Preferably, the water reducing agent is prepared by mixing hydroxyethyl acrylate, sodium persulfate and allyl polyoxyethylene ether in a ratio of 3-7:4-8:5-9, and the accelerating agent is prepared by mixing sodium aluminate, potassium silicate and quick lime in a ratio of 4-7:2-6: 3-6.
Preferably, the adhesive is prepared by mixing polyvinyl alcohol, sodium stearate and sodium sulfinate in a ratio of 1-8:1-9:2-7, and the air entraining agent is prepared by mixing sodium alkyl benzene sulfonate, sodium alkyl sulfonate and sodium fatty alcohol sulfate in a ratio of 2-9:3-9: 1-7.
Preferably, the method comprises the following steps:
s1: preparing raw materials;
s2: mixing the base materials;
s3: mixing the additives.
Preferably, in the step S1, the waste concrete is put into a crusher to be crushed into particles with a diameter of 2-6mm to prepare recycled aggregate, and then the recycled aggregate is subjected to impurity removal.
Preferably, the cement, the sand, the expanded polystyrene, the phenyleneKernel fine aggregate, the recycled aggregate and the water are sequentially added into a stirrer in the step of S2, and the mixture is prepared by stirring for 10-15 min.
Preferably, in the step S3, the water reducing agent, the accelerating agent, the binding agent and the air entraining agent are added into the mixture at an interval of 0.5-1.5min at one time, and the mixture is stirred for 3-6min to obtain the recycled lightweight concrete.
The invention has the beneficial effects that:
1. by adding the water reducing agent, the water reducing agent can disperse cement particles to different degrees; the cement paste can crush flocculent blocks condensed by cement when meeting water, and a plurality of water reducing agents have more or less air-entraining function, so that the viscosity of the cement paste is reduced, the fluidity is increased, and the fluidity of a mixture is greatly increased under the condition that all the mixing proportion of the concrete is not changed completely; the function is beneficial to operation, convenient for mechanized construction, and can save cement, and the accelerator is added into the concrete to enable the concrete to be rapidly solidified and hardened;
2. the adhesive is used for ensuring the bonding strength between the grinding material and the matrix, the air entraining agent is added to improve the workability, water retention and cohesiveness of the concrete mixture and improve the fluidity of the concrete, and a large amount of additive of closed and stable micro-bubbles which are uniformly distributed is introduced in the mixing process of the concrete mixture;
3. according to the invention, the traditional aggregate is replaced by the waste gas concrete, and the additive is added, so that the prepared concrete has light weight, the strength is enhanced along with the addition of the auxiliary materials, and the concrete has the advantages of low cost, reasonable collocation, convenience in use and convenience in popularization and use.
Drawings
Fig. 1 is a flow chart of the present invention.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Referring to FIG. 1, the first embodiment
The embodiment provides a preparation process of renewable lightweight concrete, which comprises the following raw materials in parts by weight: 135 parts of water, 128 parts of cement, 90 parts of sand, 70 parts of expanded polystyrene, 65 parts of phenyleneether fine aggregate, 120 parts of recycled aggregate, 15 parts of water reducing agent, 22 parts of accelerating agent, 8 parts of binder and 18 parts of air entraining agent, wherein the cement is specifically silicate cement, the sand is sand with the average particle size of 0.18mm, the water reducing agent is prepared by mixing 6:4:5 hydroxyethyl acrylate, sodium persulfate and allyl polyoxyethylene ether, the accelerating agent is prepared by mixing 4:2:3 sodium aluminate, potassium silicate and quick lime, the binder is prepared by mixing 1:1:7 polyvinyl alcohol, sodium stearate and sodium sulfinate, and the air entraining agent is prepared by mixing 2:3:1 sodium alkyl benzene sulfonate, sodium alkyl sulfonate and sodium fatty alcohol sulfate.
The method comprises the following steps:
s1: preparing raw materials, namely putting the waste concrete into a grinder to be ground into particles with the diameter of 2mm to prepare recycled aggregate, and then removing impurities from the recycled aggregate;
s2: mixing the basic materials, sequentially adding cement, sand, expanded polystyrene, benzene-removed fine aggregate, recycled aggregate and water into a stirrer, and stirring for 10min to obtain a mixture;
s3: and mixing the additives, adding the water reducing agent, the accelerating agent, the binder and the air entraining agent into the mixture at an interval of 0.5min once, and stirring for 3min to obtain the recycled lightweight concrete.
Referring to FIG. 1, example II
The embodiment provides a preparation process of renewable lightweight concrete, which comprises the following raw materials in parts by weight: 120 parts of water, 100 parts of cement, 110 parts of sand, 65 parts of expanded polystyrene, 55 parts of phenyleneether fine aggregate, 120 parts of recycled aggregate, 16 parts of a water reducing agent, 16 parts of an accelerating agent, 11 parts of a binder and 21 parts of an air entraining agent, wherein the cement is specifically silicate cement, the sand is sand with the average particle size of 0.17mm, the water reducing agent is prepared by mixing 6:5:6 hydroxyethyl acrylate, sodium persulfate and allyl polyoxyethylene ether, the accelerating agent is prepared by mixing 6:3:4 sodium aluminate, potassium silicate and quick lime, the binder is prepared by mixing 6:7:4 polyvinyl alcohol, sodium stearate and sodium sulfinate, and the air entraining agent is prepared by mixing 7:8:5 sodium alkyl benzene sulfonate, sodium alkyl sulfonate and sodium fatty alcohol sulfate.
The method comprises the following steps:
s1: preparing raw materials, namely putting the waste concrete into a grinder to be ground into particles with the diameter of 2-6mm to prepare recycled aggregate, and then removing impurities from the recycled aggregate;
s2: mixing the basic materials, sequentially adding cement, sand, expanded polystyrene, benzene-removed fine aggregate, recycled aggregate and water into a stirrer, and stirring for 13min to obtain a mixture;
s3: and mixing the additives, adding the water reducing agent, the accelerating agent, the binder and the air entraining agent into the mixture at an interval of 0.9min once, and stirring for 4min to obtain the recycled lightweight concrete.
Referring to FIG. 1, example III
The embodiment provides a preparation process of renewable lightweight concrete, which comprises the following raw materials in parts by weight: 182 parts of water, 156 parts of cement, 132 parts of sand, 62 parts of expanded polystyrene, 58 parts of phenyleneether fine aggregate, 99 parts of recycled aggregate, 14 parts of water reducing agent, 19 parts of accelerating agent, 7 parts of binder and 19 parts of air entraining agent, wherein the cement is silicate cement, the sand is sand with the average particle size of 0.17mm, the water reducing agent is prepared by mixing hydroxyethyl acrylate, sodium persulfate and allyl polyoxyethylene ether in a ratio of 4:7:6, the accelerating agent is prepared by mixing sodium aluminate, potassium silicate and quick lime in a ratio of 5:4:4, the binder is prepared by mixing polyvinyl alcohol, sodium stearate and sodium sulfinate in a ratio of 3:6:5, and the air entraining agent is prepared by mixing sodium alkyl benzene sulfonate, sodium alkyl sulfonate and sodium fatty alcohol sulfate in a ratio of 7:8: 6.
The method comprises the following steps:
s1: preparing raw materials, namely putting the waste concrete into a grinder to be ground into particles with the diameter of 2-6mm to prepare recycled aggregate, and then removing impurities from the recycled aggregate;
s2: mixing the basic materials, sequentially adding cement, sand, expanded polystyrene, benzene-removed fine aggregate, recycled aggregate and water into a stirrer, and stirring for 11min to obtain a mixture;
s3: and mixing the additives, adding the water reducing agent, the accelerating agent, the binder and the air entraining agent into the mixture at an interval of 1.2min once, and stirring for 5min to obtain the recycled lightweight concrete.
Referring to FIG. 1, example No. four
The embodiment provides a preparation process of renewable lightweight concrete, which comprises the following raw materials in parts by weight: 157 parts of water, 123 parts of cement, 95 parts of sand, 62 parts of expanded polystyrene, 57 parts of phenyleneether fine aggregate, 98 parts of recycled aggregate, 16 parts of water reducing agent, 19 parts of accelerating agent, 7 parts of binder and 22 parts of air entraining agent, wherein the cement is specifically silicate cement, the sand is sand with the average particle size of 0.19mm, the water reducing agent is prepared by mixing hydroxyethyl acrylate, sodium persulfate and allyl polyoxyethylene ether in a ratio of 4:7:7, the accelerating agent is prepared by mixing sodium aluminate, potassium silicate and quick lime in a ratio of 5:4:5, the binder is prepared by mixing polyvinyl alcohol, sodium stearate and sodium sulfinate in a ratio of 6:4:5, and the air entraining agent is prepared by mixing sodium alkyl benzene sulfonate, sodium alkyl sulfonate and sodium fatty alcohol sulfate in a ratio of 7:6: 3.
The method comprises the following steps:
s1: preparing raw materials, namely putting the waste concrete into a grinder to be ground into particles with the diameter of 4mm to prepare recycled aggregate, and then removing impurities from the recycled aggregate;
s2: mixing the basic materials, sequentially adding cement, sand, expanded polystyrene, benzene-removed fine aggregate, recycled aggregate and water into a stirrer, and stirring for 13min to obtain a mixture;
s3: and mixing the additives, adding the water reducing agent, the accelerating agent, the binder and the air entraining agent into the mixture at an interval of 0.8min at one time, and stirring for 5min to obtain the recycled lightweight concrete.
Referring to FIG. 1, example V
The embodiment provides a preparation process of renewable lightweight concrete, which comprises the following raw materials in parts by weight: 200 parts of water, 180 parts of cement, 150 parts of sand, 80 parts of expanded polystyrene, 70 parts of phenyleneether fine aggregate, 150 parts of recycled aggregate, 20 parts of a water reducing agent, 25 parts of an accelerating agent, 15 parts of a binder and 25 parts of an air entraining agent, wherein the cement is specifically silicate cement, the sand is sand with the average particle size of 2mm, the water reducing agent is prepared by mixing 7:8:9 hydroxyethyl acrylate, sodium persulfate and allyl polyoxyethylene ether, the accelerating agent is prepared by mixing 7:6:6 sodium aluminate, potassium silicate and quick lime, the binder is prepared by mixing 8:9:7 polyvinyl alcohol, sodium stearate and sodium sulfinate, and the air entraining agent is prepared by mixing 9:9:7 sodium alkyl benzene sulfonate, sodium alkyl sulfonate and sodium fatty alcohol sulfate.
The method comprises the following steps:
s1: preparing raw materials, namely putting the waste concrete into a grinder to be ground into particles with the diameter of 2-6mm to prepare recycled aggregate, and then removing impurities from the recycled aggregate;
s2: mixing the basic materials, sequentially adding cement, sand, expanded polystyrene, benzene-removed fine aggregate, recycled aggregate and water into a stirrer, and stirring for 15min to obtain a mixture;
s3: and mixing the additives, adding the water reducing agent, the accelerating agent, the binder and the air entraining agent into the mixture at an interval of 1.5min once, and stirring for 6min to obtain the recycled lightweight concrete.
Comparing the conventional recycled lightweight concrete with the recycled lightweight concrete prepared in examples one to five, the recycled lightweight concrete prepared in examples one to five is as follows:
from the above table, it can be seen that the preparation process of the renewable lightweight concrete provided by the present invention is significantly improved, and the second embodiment is the best embodiment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The preparation process of the renewable lightweight concrete is characterized by comprising the following raw materials in parts by weight: 120-200 parts of water, 100-180 parts of cement, 80-150 parts of sand, 50-80 parts of expanded polystyrene, 50-70 parts of phenyleneffersoid fine aggregate, 90-150 parts of recycled aggregate, 10-20 parts of water reducer, 15-25 parts of accelerator, 5-15 parts of binder and 10-25 parts of air entraining agent.
2. The process for preparing recycled lightweight concrete according to claim 1, wherein the cement is portland cement, and the sand is sand with an average particle size of 0.15-2 mm.
3. The preparation process of the renewable lightweight concrete according to claim 1, wherein the water reducing agent is prepared by mixing hydroxyethyl acrylate, sodium persulfate and allyl polyoxyethylene ether in a ratio of 3-7:4-8:5-9, and the accelerating agent is prepared by mixing sodium aluminate, potassium silicate and quick lime in a ratio of 4-7:2-6: 3-6.
4. The preparation process of the renewable lightweight concrete according to claim 1, wherein the binder is prepared by mixing polyvinyl alcohol, sodium stearate and sodium sulfinate in a ratio of 1-8:1-9:2-7, and the air-entraining agent is prepared by mixing sodium alkyl benzene sulfonate, sodium alkyl sulfonate and sodium fatty alcohol sulfate in a ratio of 2-9:3-9: 1-7.
5. The process for preparing renewable lightweight concrete according to claim 1, which comprises the following steps:
s1: preparing raw materials;
s2: mixing the base materials;
s3: mixing the additives.
6. The process of claim 5, wherein in the step S1, the waste concrete is crushed in a crusher to obtain particles with a diameter of 2-6mm, and the regenerated aggregate is subjected to impurity removal.
7. The process for preparing recycled lightweight concrete according to claim 5, wherein in the step S2, cement, sand, expanded polystyrene, phenyleneka fine aggregate, recycled aggregate and water are sequentially added into a stirrer, and the mixture is obtained after stirring for 10-15 min.
8. The process for preparing the renewable lightweight concrete according to claim 5, wherein in the step S3, the water reducing agent, the accelerating agent, the binding agent and the air entraining agent are added into the mixture at an interval of 0.5-1.5min at one time, and the mixture is stirred for 3-6min to obtain the renewable lightweight concrete.
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| CN202111214893.6A CN113955989A (en) | 2021-10-19 | 2021-10-19 | Preparation process of renewable lightweight concrete |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116003003A (en) * | 2023-01-05 | 2023-04-25 | 重庆中望实业有限公司 | Process for producing cement by comprehensively utilizing solid waste and preparation device thereof |
| CN116120017A (en) * | 2023-02-24 | 2023-05-16 | 扬州华运新材料科技有限公司 | Preparation process of renewable lightweight concrete |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538134A (en) * | 2009-04-14 | 2009-09-23 | 大连市建筑科学研究设计院股份有限公司 | Polyether class polycarboxylic acid high-efficiency water reducing agent and preparation method thereof |
| CN108328996A (en) * | 2018-03-30 | 2018-07-27 | 四川汇源钢建装配建筑有限公司 | A kind of lightweight concrete, raw material proportioning and preparation method thereof |
| KR102135136B1 (en) * | 2019-10-15 | 2020-07-17 | 엠알산업(주) | The light weight block using the waste flame retardant styrofoam material recycled aggregate |
| CN111908862A (en) * | 2020-07-14 | 2020-11-10 | 福建省大地管桩有限公司 | Renewable environment-friendly pervious concrete and preparation method thereof |
-
2021
- 2021-10-19 CN CN202111214893.6A patent/CN113955989A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538134A (en) * | 2009-04-14 | 2009-09-23 | 大连市建筑科学研究设计院股份有限公司 | Polyether class polycarboxylic acid high-efficiency water reducing agent and preparation method thereof |
| CN108328996A (en) * | 2018-03-30 | 2018-07-27 | 四川汇源钢建装配建筑有限公司 | A kind of lightweight concrete, raw material proportioning and preparation method thereof |
| KR102135136B1 (en) * | 2019-10-15 | 2020-07-17 | 엠알산업(주) | The light weight block using the waste flame retardant styrofoam material recycled aggregate |
| CN111908862A (en) * | 2020-07-14 | 2020-11-10 | 福建省大地管桩有限公司 | Renewable environment-friendly pervious concrete and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116003003A (en) * | 2023-01-05 | 2023-04-25 | 重庆中望实业有限公司 | Process for producing cement by comprehensively utilizing solid waste and preparation device thereof |
| CN116120017A (en) * | 2023-02-24 | 2023-05-16 | 扬州华运新材料科技有限公司 | Preparation process of renewable lightweight concrete |
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Application publication date: 20220121 |