CN107698990B - Ceramic polished brick powder modified asphalt prepared from industrial waste residues and preparation method thereof - Google Patents
Ceramic polished brick powder modified asphalt prepared from industrial waste residues and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2275—Ferroso-ferric oxide (Fe3O4)
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- Road Paving Structures (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a ceramic polished tile powder modified asphalt using industrial waste residues and a preparation method thereof. The method comprises the steps of drying, grinding and screening ceramic polishing waste residues to obtain ceramic polishing brick powder, and then carrying out surface modification on the ceramic polishing brick powder by using a silane coupling agent solution to obtain surface-modified ceramic polishing brick powder; then the modified asphalt is mixed into the petroleum asphalt of the common road, and the modified asphalt is prepared by the working procedures of heating and melting, shearing and stirring, standing and developing and the like. Compared with the common road petroleum asphalt, the modified asphalt has the advantages that the three technical indexes of penetration, ductility and softening point are not changed greatly, but the adhesion performance with aggregate is improved, and the residual penetration ratio and the residual ductility are obviously increased, so that the road performance is obviously improved. The invention fully utilizes the solid waste in the ceramic industry, greatly reduces the pollution to the environment, has simple process and stable product quality, can be widely applied to road pavement laying of various grades and building waterproofing, and has good economic benefit and social benefit.
Description
Technical Field
The invention relates to a building material, in particular to ceramic polished tile powder modified asphalt using industrial waste residues and a preparation method thereof.
Background
At present, more than 98% of the expressways built in China adopt asphalt pavements, but the pavement structure is seriously damaged along with the increase of vehicle flow, the increase of axle load and the over-high speed, so that higher requirements on the quality of the asphalt pavements are provided. The modified asphalt is a functional high-grade pavement material, integrates the dual advantages of asphalt and a modifier, is superior to common road petroleum asphalt, can be used for paving high-grade pavements, and is a novel material with development prospect in the 21 st century. The polymer modified asphalt is the main stream of asphalt modification because the polymer modified asphalt can effectively enhance the disease resistance of asphalt pavement, but has the problems of high price, high processing difficulty, poor compatibility with asphalt and the like which are difficult to solve. Therefore, it is necessary to develop a new modified asphalt having excellent properties and economical efficiency. A plurality of experimental researches show that the inorganic filler is added into the petroleum asphalt for the common road to improve the temperature sensitivity, improve the softening point, improve the rheological property and the ageing resistance of the asphalt and reduce the cost.
China is a large country for producing building sanitary ceramics, accounts for about 60 percent of the total world production and stably stays in the first place in the world. According to incomplete statistics, the quantity of waste residues and waste powders generated by the national polished brick production line is billions of tons every year. Ceramic enterprises need to use a large number of special fields for storage, so that the expenses of land acquisition, field disposal and the like of the enterprises are increased, the production cost is increased, and land resources are consumed in a large amount. More seriously, the waste residues and waste powders are not degradable and contain part of harmful chemical substances, and if the waste residues and waste powders are stored for a long time, some harmful elements permeate through soil layers, which also affect underground water resources and pollute the environment, so that an effective disposal method is urgently needed.
The ceramic polished tile powder is scraps produced in a series of deep processing processes of grinding and polishing, edging and chamfering and the like of ceramic tiles, thick glazed tiles and the like by ceramic enterprises. The ceramic polished tile powder contains SiO2、Al2O3、Fe3O4And CaO and the like, has the characteristics of fine particles, large specific surface area, rough surface, irregular shape, low density, strong adsorbability and the like, and has certain volcanic ash activity under the normal temperature condition. At present, most of the researchers are using ceramic polished brick powder for firing light ceramic bricks and ceramic granules to prepare cement-based materials and the like, and the research of using the ceramic polished brick powder as an asphalt modifier is still blank. In view of the excellent physical and chemical properties and rich reserves of the ceramic polished tile powder, the inorganic modifier is applied to the highway construction in China as a novel inorganic modifier, not only can realize the effective and reasonable utilization of resources, but also can reduce the environmental problems caused by the accumulation of the waste residues and the waste powder of the ceramic polished tile, and has great economic benefit and social benefit.
Disclosure of Invention
In order to solve the technical problems, the invention provides ceramic polished brick powder modified asphalt using industrial waste residues and a manufacturing method thereof.
The technical scheme for solving the technical problems is as follows:
a ceramic polished tile powder modified asphalt using industrial waste residues is characterized in that: mixing ceramic polished brick powder and a silane coupling agent KH-550 solution in a mass ratio of 1 (1-2), and then stirring, standing, filtering and drying to obtain surface-modified ceramic polished brick powder; then mixing 5-15% of surface modified ceramic polished brick powder by mass percent with 85-95% of common road petroleum asphalt, heating to melt, shearing and stirring, standing and developing to obtain the ceramic polished brick powder modified asphalt.
Further, the ceramic polished brick powder is obtained by dehydrating and drying ceramic polished waste residues or waste powder, and then grinding the ceramic polished waste residues or waste powder into powder by a ball mill; the grain size of the ceramic polished brick powder is less than or equal to 0.075 mm.
Further, the silane coupling agent is an industrial silane coupling agent KH-550.
Further, the mass concentration of the silane coupling agent solution is 0.5-5%.
The preparation method of the ceramic polished tile powder modified asphalt by using the industrial waste residues comprises the following steps:
(1) placing the ceramic polished brick powder in an oven for drying, drying at the heating rate of 10-15 ℃/min, controlling the heating time to be 10-20 min, controlling the temperature to be 100-110 ℃, and keeping the temperature to be constant weight;
(2) mixing deionized water and absolute ethyl alcohol, and adjusting the pH value of the mixed liquid by glacial acetic acid, wherein m (deionized water) and m (absolute ethyl alcohol) are (1-4) and (6-9), and the pH value is 3-5, so as to obtain the mixed liquid;
(3) weighing a certain amount of silane coupling agent KH-550, preparing a silane coupling agent KH-550 solution by using the mixed solution, standing and hydrolyzing, wherein the concentration of the solution is controlled to be 0.5-5%, and the hydrolysis time is 0.5-2.5 h;
(4) placing the ceramic polished brick powder obtained in the step (1) into the silane coupling agent KH-550 solution obtained in the step (3), stirring for 10-20 min, standing, soaking for 0.5-2.5 h, filtering with quick filter paper, and drying in a drying oven at 40-70 ℃ to constant weight to obtain surface modified ceramic polished brick powder;
(5) placing the petroleum asphalt of the common road into an oven for melting, heating at the heating rate of 10-15 ℃/min, and controlling the heating time to be 20-40 min; heating to 120-150 ℃ (preferably 135 ℃), and preserving heat until the petroleum asphalt of the common road is completely melted;
(6) pouring the common road petroleum asphalt into a full-automatic high-speed modified asphalt emulsifying shearing machine, starting the machine, heating to 140-170 ℃, pre-stirring for 10-30 min at the rotating speed of 4000-6000 r/min, then adding the surface modified ceramic polished brick powder obtained in the step (4), continuously stirring for 0.5-1.5 h after powder addition is finished, stopping the machine, standing and developing until natural cooling is achieved;
(7) standing the asphalt obtained in the step (6) for 12-36 h (preferably 24h), restarting, heating to 140-170 ℃, stirring at the rotating speed of 4000-6000 r/min for 0.5-1.5 h, and stopping.
Further, in the step (1), the constant weight standard is that the mass change of the ceramic polished tile powder obtained by two times of weighing is not more than 0.1%.
Further, in the step (4), the mass ratio of the ceramic polished brick powder to the silane coupling agent KH-550 solution is 1 (1-2).
Further, in the step (6), the mass percent of the surface modified ceramic polished brick powder is 5-15%, and the mass percent of the common road petroleum asphalt is 85-95%; the time for adding the surface modified ceramic polished brick powder is controlled to be 3-10 min.
And (7) discharging in a molten state after stopping the machine, and placing in an asphalt sample reserving barrel to obtain the finished product of the ceramic polished tile powder modified asphalt.
The finished product of the ceramic polished tile powder modified asphalt has the segregation test that the segregation softening point difference is only 0.2 ℃ in 48 hours, and the ceramic polished tile powder and the matrix asphalt are proved to have better compatibility.
The finished product of the ceramic polished tile powder modified asphalt has good dispersibility in common road petroleum asphalt through microscopic morphology tests.
The finished product of the ceramic polished tile powder modified asphalt is superior to common road petroleum asphalt in various indexes through road performance tests, and the performance indexes of the finished product and the indexes are shown in table 1.
TABLE 1 common road asphalt and ceramic polished tile powder modified asphalt Performance index
Specifications of asphalt Properties (JTG F40-2004)
As can be seen from Table 1, compared with the common road petroleum asphalt, the ceramic polished tile powder modified asphalt using the industrial waste slag has the advantages that the technical indexes of penetration, ductility and softening point are not changed greatly, but the adhesion performance with aggregate is improved, and the residual penetration ratio and the residual ductility are both obviously increased, so that the road performance of the asphalt is obviously improved.
The invention has the technical effects that:
the method for producing the ceramic polished tile powder modified asphalt by using the ceramic polished tile waste residues and the waste powder adopts a conventional stirring method, has simple process, does not need the procedures of secondary crushing, surface impurity removal, fine grinding and the like on the raw materials, can be directly applied to production without complex treatment, and has low energy consumption and high efficiency. In the production of ceramic polished tile powder modified asphalt, ceramic polished tile powder is mixed to provide siliceous modified material, ordinary road petroleum asphalt is mixed to provide matrix material, and proper quantity of silane coupling agent KH-550 is used as interface modifier of the two materials.
The invention adopts a secondary stirring process, is beneficial to uniformly dispersing the ceramic polished tile powder in the petroleum asphalt of the common road, simultaneously can ensure that the ceramic polished tile powder effectively absorbs the oil in the petroleum asphalt of the common road to generate slightly-soluble expansion, avoids the problems of agglomeration caused by larger specific surface area of the ceramic polished tile powder and poor compatibility with the petroleum asphalt of the common road caused by the acidic property of the surface of the ceramic polished tile powder, generates a high-quality ceramic polished tile powder modified asphalt product with good toughness, strong stability and environmental protection, protects the environment and effectively utilizes industrial solid wastes.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the present invention is not limited thereto.
Example 1
(1) Preparing materials: ceramic polishing waste residues and waste powder of ceramic enterprises are dehydrated and air-dried, then sent to a ball mill to be ground into powder, and then sent to a special ash storage tank for later use.
(2) Preparing materials: the surface modified ceramic polished brick powder comprises the following ingredients: the mass ratio of the ceramic polished brick powder to a silane coupling agent KH-550 solution with the mass concentration of 1% is 1: 1; the modified asphalt comprises the following raw materials in percentage by mass: 5% of surface modified ceramic polished brick powder and 95% of common road petroleum asphalt.
(3) Preparing an absolute ethyl alcohol solution: mixing deionized water with absolute ethyl alcohol, and adjusting the pH value of the mixed solution by glacial acetic acid, wherein the ratio of the raw materials is as follows: m (deionized water) and m (absolute ethyl alcohol) (1-4) and (6-9), wherein the pH value is 3-5, and a mixed solution is prepared;
(4) preparing a silane coupling agent KH-550 solution: weighing a certain amount of silane coupling agent KH-550, preparing a silane coupling agent KH-550 solution by using the mixed solution, standing and hydrolyzing for 0.5-2.5 h;
(5) surface modification treatment of ceramic polished brick powder: placing the ceramic polished brick powder into a medium silane coupling agent KH-550 solution, stirring for 10min, standing and soaking for 0.5-2.5 h, filtering with quick filter paper, placing in a drying oven at 40-70 ℃ for drying to constant weight to obtain surface modified ceramic polished brick powder, screening and placing in a dryer;
(6) preparing ceramic polished tile powder modified asphalt: putting the molten common road petroleum asphalt into a full-automatic high-speed modified asphalt emulsifying shearing machine, starting the machine, heating to 140-170 ℃, pre-stirring for 10-30 min at the rotating speed of 4000-6000 r/min, then adding the ceramic polished brick powder in the step 4, continuously stirring for 0.5-1.5 h after powder addition, stopping the machine, standing and developing until the material is naturally cooled, restarting the machine after 24h, heating to 140-170 ℃, stirring for 0.5-1.5 h at the rotating speed of 4000-6000 r/min, and stopping the machine.
(7) Finished product of ceramic polished brick powder modified asphalt: discharging the ceramic polished tile powder modified asphalt in a molten state, and placing the discharged ceramic polished tile powder modified asphalt in an asphalt sample reserving barrel to obtain a finished ceramic polished tile powder modified asphalt product. The main technical indexes of the modified asphalt are measured as follows: the penetration degree is 64.2, the 25 ℃ ductility is more than 100, the softening point is 50.6, the residual penetration ratio is 74, the residual ductility is 12.3, and the adhesion grade with coarse aggregates is 5.
Example 2: the surface modified ceramic polished brick powder comprises the following ingredients: the mass ratio of the ceramic polished brick powder to a silane coupling agent KH-550 solution with the mass concentration of 2% is 1: 1; the modified asphalt comprises the following raw materials in percentage by mass: 8% of surface modified ceramic polished brick powder and 92% of common road petroleum asphalt. The rest is the same as in example 1. The main technical indexes of the modified asphalt are measured as follows: the penetration degree is 63.4, the 25 ℃ ductility is more than 100, the softening point is 51.4, the residual penetration ratio is 72.6, the residual ductility is 11.2, and the adhesion grade with coarse aggregates is 5.
Example 3: the surface modified ceramic polished brick powder comprises the following ingredients: the mass ratio of the ceramic polished brick powder to a silane coupling agent KH-550 solution with the mass concentration of 3% is 1: 2; the modified asphalt comprises the following raw materials in percentage by mass: 10% of surface modified ceramic polished brick powder and 90% of common road petroleum asphalt. The rest is the same as in example 1. The main technical indexes of the modified asphalt are measured as follows: penetration 62, 25 ℃ ductility >100, softening point 52.0, residual penetration ratio 70.3, residual ductility 10.4, and adhesion grade with coarse aggregate 5.
Example 4: the surface modified ceramic polished brick powder comprises the following ingredients: the mass ratio of the ceramic polished brick powder to a silane coupling agent KH-550 solution with the mass concentration of 5% is 1: 2; the modified asphalt comprises the following raw materials in percentage by mass: 12% of surface modified ceramic polished brick powder and 88% of common road petroleum asphalt. The rest is the same as in example 1. The main technical indexes of the modified asphalt are measured as follows: the penetration degree is 60.4, the 25 ℃ ductility is more than 100, the softening point is 54.8, the residual penetration ratio is 69.6, the residual ductility is 9.6, and the adhesion grade with coarse aggregates is 5.
The modified asphalt obtained in the above embodiments has good road performance, the specific indexes of the products obtained in the embodiments are close to those of the ceramic polished tile powder modified asphalt in table 1, and compared with common road petroleum asphalt, the road performance is obviously improved.
Claims (6)
1. The ceramic polished tile powder modified asphalt using industrial waste residues is characterized by comprising the following components in percentage by mass: 1, mixing the ceramic polished brick powder with a silane coupling agent KH-550 solution, and then stirring, standing, filtering and drying to obtain surface modified ceramic polished brick powder; mixing 5% of surface modified ceramic polished tile powder by mass with 95% of common road petroleum asphalt, heating to melt, shearing, stirring, standing and developing to obtain ceramic polished tile powder modified asphalt;
the preparation method of the ceramic polished tile powder modified asphalt comprises the following steps:
(1) placing the ceramic polished brick powder in an oven for drying, and drying at the heating rate of 10-15 ℃/min, controlling the heating time to be 10-20 min, controlling the temperature to be 100-110 ℃, and keeping the temperature to be constant weight;
(2) mixing deionized water and absolute ethyl alcohol, and adjusting the pH value of the mixed solution by using glacial acetic acid, wherein m (deionized water): m (absolute ethyl alcohol) = (1-4): (6-9) and preparing a mixed solution, wherein the pH = 3-5;
(3) weighing a certain amount of silane coupling agent KH-550 by using balance, preparing a silane coupling agent KH-550 solution by using the mixed solution, standing and hydrolyzing, wherein the mass concentration of the silane coupling agent KH-550 solution is 1%, and the hydrolysis time is 0.5-2.5 h;
(4) placing the ceramic polished brick powder obtained in the step (1) into the silane coupling agent KH-550 solution obtained in the step (3), wherein the mass ratio of the two is 1: 1; stirring for 10-20 min, standing and soaking for 0.5-2.5 h, filtering by using quick filter paper, and drying in an oven at 40-70 ℃ to constant weight to prepare surface modified ceramic polished brick powder;
(5) placing the common road petroleum asphalt in an oven for melting, heating at a heating rate of 10-15 ℃/min, and controlling the heating time to be 20-40 min; heating to 120-150 ℃, and preserving heat until the petroleum asphalt of the common road is completely melted;
(6) pouring the common road petroleum asphalt into a full-automatic high-speed modified asphalt emulsifying shearing machine, starting the machine, heating to 140-170 ℃, pre-stirring for 10-30 min at the rotating speed of 4000-6000 r/min, then adding the surface modified ceramic polished brick powder obtained in the step (4), continuously stirring for 0.5-1.5 h after powder addition is finished, stopping the machine, standing and developing until natural cooling is achieved;
(7) standing the asphalt obtained in the step (6) for 12-36 h, restarting, heating to 140-170 ℃, stirring at a rotating speed of 4000-6000 r/min for 0.5-1.5 h, and stopping.
2. The asphalt modified by ceramic polished tile powder using industrial waste residues according to claim 1, wherein the ceramic polished tile powder is obtained by dehydrating and drying ceramic polished waste residues, and then grinding the ceramic polished waste residues into powder by a ball mill; the grain size of the ceramic polished brick powder is less than or equal to 0.075 mm.
3. The method for preparing the ceramic polished tile powder modified asphalt as claimed in claim 1 or 2, characterized by comprising the steps of:
(1) placing the ceramic polished brick powder in an oven for drying, and drying at the heating rate of 10-15 ℃/min, controlling the heating time to be 10-20 min, controlling the temperature to be 100-110 ℃, and keeping the temperature to be constant weight;
(2) mixing deionized water and absolute ethyl alcohol, and adjusting the pH value of the mixed solution by using glacial acetic acid, wherein m (deionized water): m (absolute ethyl alcohol) = (1-4): (6-9) and preparing a mixed solution, wherein the pH = 3-5;
(3) weighing a certain amount of silane coupling agent KH-550 by using balance, preparing a silane coupling agent KH-550 solution by using the mixed solution, standing and hydrolyzing, wherein the mass concentration of the silane coupling agent KH-550 solution is 1%, and the hydrolysis time is 0.5-2.5 h;
(4) placing the ceramic polished brick powder obtained in the step (1) into the silane coupling agent KH-550 solution obtained in the step (3), wherein the mass ratio of the two is 1: 1; stirring for 10-20 min, standing and soaking for 0.5-2.5 h, filtering by using quick filter paper, and drying in an oven at 40-70 ℃ to constant weight to prepare surface modified ceramic polished brick powder;
(5) placing the common road petroleum asphalt in an oven for melting, heating at a heating rate of 10-15 ℃/min, and controlling the heating time to be 20-40 min; heating to 120-150 ℃, and preserving heat until the petroleum asphalt of the common road is completely melted;
(6) pouring the common road petroleum asphalt into a full-automatic high-speed modified asphalt emulsifying shearing machine, starting the machine, heating to 140-170 ℃, pre-stirring for 10-30 min at the rotating speed of 4000-6000 r/min, then adding the surface modified ceramic polished brick powder obtained in the step (4), continuously stirring for 0.5-1.5 h after powder addition is finished, stopping the machine, standing and developing until natural cooling is achieved;
(7) standing the asphalt obtained in the step (6) for 12-36 h, restarting, heating to 140-170 ℃, stirring at a rotating speed of 4000-6000 r/min for 0.5-1.5 h, and stopping.
4. The method for preparing the asphalt modified by the ceramic polished tile powder according to claim 3, wherein in the step (1), the standard of constant weight is that the mass change of the ceramic polished tile powder measured in two times before and after the constant weight is not more than 0.1%.
5. The method for preparing the ceramic polished tile powder modified asphalt as claimed in claim 3, wherein the time for adding the surface modified ceramic polished tile powder is controlled within 3-10 min.
6. The method for preparing the asphalt modified by the ceramic polished tile powder as claimed in claim 3, wherein in the step (7), the asphalt is discharged in a molten state after shutdown, and is placed in an asphalt sample reserving barrel to obtain a finished product of the asphalt modified by the ceramic polished tile powder.
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| CN110171934B (en) * | 2019-05-17 | 2021-12-24 | 南京晓庄学院 | Collaborative regeneration treatment method for waste incineration fly ash and construction waste |
| CN110451848A (en) * | 2019-08-29 | 2019-11-15 | 沈阳建筑大学 | The modified pitch and its preparation method that gather materials towards poor quality and application |
| CN112538274B (en) * | 2020-12-02 | 2023-10-20 | 中冶南方城市建设工程技术有限公司 | Low-grade modified asphalt suitable for rigid-flexible composite long-service-life pavement and preparation method thereof |
| CN113136108A (en) * | 2021-04-02 | 2021-07-20 | 湖北工业大学 | Preparation method of superfine inorganic micro powder modified asphalt |
| CN114105557B (en) * | 2021-11-22 | 2022-10-04 | 厦门天润锦龙建材有限公司 | Plastering mortar and preparation method thereof |
| CN113912353B (en) * | 2021-11-22 | 2022-10-04 | 科之杰新材料集团(广东)有限公司 | Thermal insulation mortar and preparation method thereof |
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| CN103911008B (en) * | 2014-03-21 | 2016-02-03 | 苏州宇希新材料科技有限公司 | A kind of asphalt modifier composite nano-powder material |
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