CN114133175B - Red mud-based polymer color mortar and preparation method thereof - Google Patents
Red mud-based polymer color mortar and preparation method thereof Download PDFInfo
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- CN114133175B CN114133175B CN202111678713.XA CN202111678713A CN114133175B CN 114133175 B CN114133175 B CN 114133175B CN 202111678713 A CN202111678713 A CN 202111678713A CN 114133175 B CN114133175 B CN 114133175B
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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
- C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
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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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- 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
- C04B2111/80—Optical properties, e.g. transparency or reflexibility
- C04B2111/82—Coloured 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses red mud-based polymer color mortar and a preparation method thereof, wherein the red mud-based polymer color mortar comprises the following components: red mud, mineral powder, micro silicon powder, metakaolin, sodium silicate, caustic alkali, redispersible latex powder, polyvinyl alcohol fiber, polycarboxylic acid water reducing agent, expanding agent, quartz sand and water. The preparation method adopts reasonable feeding sequence and stirring mode to obtain the mortar mixture with uniform mixing and good construction performance. The red mud-based polymer color mortar provided by the invention has the performance characteristics of good durability, color retention, cohesiveness, water resistance, impermeability, environmental friendliness and the like, can be used for decoration inside and outside various buildings, color floors and color pavements, and can comprehensively protect the buildings from being eroded and damaged by natural environment, industrial waste gas and microorganisms while the decoration is attractive, so that the service life of the buildings is prolonged, and the resource waste caused by secondary decoration can be effectively reduced.
Description
Technical Field
The invention relates to a building material and a preparation method thereof, in particular to red mud-based polymer color mortar and a preparation method thereof.
Background
The red mud is industrial solid waste discharged after alumina is extracted from bauxite, is insoluble residue and can be divided into sintering process red mud, bayer process red mud and combination process red mud, and the main component is SiO 2 、Al 2 O 3 、CaO、Fe 2 O 3 Etc., and further contains a large amount of heavy metal components. Since chemical alkali combined with red mud is difficult to remove and has a large content, and also contains fluorine, aluminum and other various impurities, harmless utilization of red mud has been difficult to carry out. Experts in various countries around the world carry out a great deal of scientific research on the comprehensive utilization of the red mud, but the research progress is not great. Therefore, the treatment and comprehensive utilization of the red mud waste residue become a great worldwide problem. At present, the treatment of the red mud is mainly carried out by a method of seabed or land stacking treatment, but with the development of the aluminum industry, the amount of the red mud discharged during the production of alumina is increased day by day, and a series of problems caused by stacking treatment are caused, thereby causing serious environmental problems.
The geopolymer is a polymer made of AlO 4 And SiO 4 Tetrahedral structure unitThe inorganic polymer forming the three-dimensional net structure has excellent mechanical property, corrosion resistance, fire resistance and high temperature resistance, and has very remarkable weather resistance and aging resistance. In addition, the structure of the geopolymer is a crystal-like structure composed of cyclic molecular chains. The ring-shaped molecules are combined to form a closed cavity (cage shape), so that metal ions and other toxic substances can be divided and enclosed in the cavity; meanwhile, the aluminum ions in the framework can also adsorb metal ions, so that the metal ions in the fixing system can be adsorbed more effectively. The geopolymer is applied to building materials, high-strength materials, solid core solid waste materials, sealing materials, high-temperature resistant materials and the like.
The color facing mortar has been widely used in interior and exterior wall decoration of buildings in developed countries instead of paint and ceramic tile. At present, most of the commonly used color facing mortar in the domestic market is cement-based products, and the problems of difficult color matching, obvious color difference and poor color retention and weather resistance exist.
Therefore, the red mud geopolymer color facing mortar with high performance is developed, the comprehensive utilization rate of the red mud in the field of building materials is greatly improved, the problems of poor weather resistance and poor color retention of the color facing mortar are solved, the green, environment-friendly and high-performance color facing mortar is provided, and the red mud geopolymer color facing mortar has wide application prospects.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the red mud-based polymer color mortar, which has the performance characteristics of good durability, color retention, cohesiveness, water resistance, permeability resistance, environmental protection and the like, and can be applied to decoration inside and outside various buildings, color terraces and color pavements.
The invention adopts the technical scheme to solve the technical problems and provides red mud-based polymer color mortar which comprises the following components: red mud, mineral powder, micro silicon powder, metakaolin, sodium silicate, caustic alkali, redispersible latex powder, short fibers, a polycarboxylic acid water reducing agent, an expanding agent, quartz sand and water.
Further, the components are mixed according to the following parts by weight:
furthermore, the red mud is produced by a Bayer process, the content of aluminum oxide is 15-25%, the content of iron oxide is 30-45%, the red mud is dried and ground, the mesh number is 600 meshes, and the pH value of a leachate is 12-13.
Further, the mineral powder is blast furnace slag micro powder with activity S95 grade or above.
Further, the micro silicon powder is white silicon powder with the mesh number of 800.
Further, the metakaolin is formed by dehydrating kaolin at the temperature of 800-850 ℃, and the mesh number is 400 meshes.
Further, the quartz sand is formed by uniformly mixing medium sand and fine sand according to the weight part ratio of 1.
Further, the sodium silicate modulus is 2.3, and the solid content is 40%.
Furthermore, the short fiber is one or a mixture of polypropylene fiber, polyvinyl alcohol fiber and basalt fiber, and the fiber length is 6-9 mm.
The invention also provides a preparation method of the red mud-based polymer color mortar for solving the technical problems, which comprises the following steps: putting red mud, mineral powder, micro silicon powder, metakaolin, redispersible latex powder, short fibers, a polycarboxylic acid water reducing agent, an expanding agent, quartz sand and water into a stirrer, and stirring for 3min at the speed of 60-120 r/min; then adding sodium silicate and caustic alkali, increasing the rotating speed to 1000r/min, and continuing stirring for 1-2 min; then adding quartz sand and continuously stirring for 1-2 min at the rotating speed of 60-120 r/min; maintaining the stirring speed of 60-120 r/min, and finally adding short fibers and stirring for 2-3 min until the mixture is fully and uniformly mixed.
Compared with the prior art, the invention has the following beneficial effects: the red mud-based polymer color mortar provided by the invention has the performance characteristics of good durability, color retention, cohesiveness, water resistance, impermeability, environmental friendliness and the like, can be used for decoration inside and outside various buildings, color floors and color pavements, and can comprehensively protect the buildings from being eroded and damaged by natural environment, industrial waste gas and microorganisms while the decoration is attractive, so that the service life of the buildings is prolonged, and the resource waste caused by secondary decoration can be effectively reduced. In addition, the comprehensive utilization rate of the red mud in the field of building materials is improved, and the additional value of the red mud is improved.
Detailed Description
The present invention will be further described with reference to the following examples.
The red mud-based polymer color mortar provided by the invention comprises:
the invention also provides a preparation method of the red mud geopolymer colorful facing mortar, and the preparation method comprises the following steps: the red mud, the mineral powder, the micro silicon powder, the metakaolin, the re-dispersible latex powder, the polyvinyl alcohol fiber, the polycarboxylic acid water reducer, the expanding agent, the quartz sand and the water are placed into a stirrer to be stirred for 3min at the speed of 60-120 r/min, then the sodium silicate and the caustic alkali are added to be stirred for 1-2 min after the rotating speed is increased to 1000r/min, the quartz sand is added to be stirred for 1-2 min continuously at the rotating speed of 60-120 r/min, the stirring speed of 60-120 r/min is maintained, and finally the short fiber is added to be stirred for 2-3 min until the mixture is fully and uniformly mixed.
From the analysis of functional mechanism, compared with the prior art, the invention has the advantages that:
1. the red mud is alkaline substance, and along with the shower of rainwater, alkali in the red mud can be dissolved out, possibly polluting surface water and underground water. The invention makes full use of the alkaline components which can be separated out from the red mud, and simultaneously the SiO contained in the superfine red mud 2 、Al 2 O 3 CaO participates in alkali-activated reaction, so that the problems of alkaline pollution and low activity of the red mud are solved;
2. the red mud contains Fe 2 O 3 The presented red or dark red color is prepared into the color facing mortar by selecting the red mud raw material and blending the red mud raw material in proportionAnd the color can be adjusted without a large amount of pigment. The red mud geopolymer has good construction performance and cohesiveness, has good anti-sagging performance and plasticity, can be subjected to batch scraping and shaping according to design and decoration requirements, and can obviously improve the additional value of the application of the red mud in the field of building materials.
3. The structure of geopolymers is a "crystal-like" structure composed of cyclic molecular chains. The cyclic molecules are combined to form a closed cavity (cage shape), metal ions and other toxic substances can be divided and enclosed in the cavity, meanwhile, aluminum ions in the framework can also adsorb the metal ions, and the study of J.Davidovits shows that the fixing rate of the geopolymer matrix to Hg, as, fe, mn, ar, co and Pb is more than or equal to 90 percent. In addition, the network framework is stable even under the action of nuclear radiation. As a green and cheap heavy metal adsorbent, the geopolymer has a good adsorption effect on heavy metals such as lead, copper, nickel, chromium, cadmium and the like. The characteristic of effectively adsorbing and fixing metal ions by using a polymer material is utilized, so that the heavy metal ions in the red mud are adsorbed and fixed, and the heavy metal pollution caused in the stacking and comprehensive utilization of the red mud is reduced;
4. the geopolymer is a polymer made of AlO 4 And SiO 4 The tetrahedral structure unit forms an inorganic polymer with a three-dimensional network structure. Compared with the traditional color facing mortar, the geopolymer mortar has lower water absorption rate and chloride ion penetration depth, higher stability and corrosion resistance in severe environment, higher mechanical strength and better color retention and weather resistance. The colored facing mortar with excellent physical and chemical properties, good weather resistance and color retention is prepared by utilizing the self performance characteristics of geopolymer materials, particularly the excellent weather resistance and color retention.
The red mud-based polymer color mortar is prepared from red mud produced by a Bayer process, has high alumina, iron oxide and alkali contents, is dried and ground into 600 meshes, and has a pH value of a leachate of 12-13.
The red mud-based polymer color mortar is characterized in that the mineral powder is blast furnace slag micro powder with activity S95 grade or above; the micro silicon powder is white silicon powder with the mesh number of about 800; the metakaolin is formed by dehydrating kaolin at the temperature of 800-850 ℃, and the mesh number is 400 meshes; the quartz sand is formed by uniformly mixing medium sand and fine sand according to the proportion of 1.
The red mud-based polymer color mortar has the sodium silicate modulus of 2.3 and the solid content of 40 percent; the short fiber is one or a mixture of a plurality of polypropylene fibers, polyvinyl alcohol fibers and basalt fibers, and the length of the fiber is 6-9 mm.
The red mud-mineral powder-water glass based polymer is used as a basic cementing material, and has the characteristics of air permeability, water resistance and permeability resistance; has good stability, durability and color retention, and the light resistance is 7 to 8 grades, and the weather resistance is 4 to 5 grades.
The red mud-based polymer color mortar has the characteristics of high strength and impact resistance, the 3d flexural strength of the red mud-based polymer color mortar is 6-8MPa, and the 28d flexural strength of the red mud-based polymer color mortar is 12-15 MPa; the 3d compressive strength is 30-40MPa, and the 28d compressive strength is 50-70 MPa.
The red mud-based polymer color mortar has good adhesive property and weather resistance, the 28d tensile adhesive strength is 3-5 MPa, and the tensile adhesive strength reduction rate after soaking, heat aging and 40 times of freeze-thaw cycles is 5-10%.
The red mud-based polymer color mortar has excellent acid and alkali corrosion resistance, and a test sample of the red mud-based polymer color mortar is subjected to an acid and alkali corrosion resistance test according to JC/T2138-2012 Fine ceramic acid and alkali corrosion resistance test method: after the acid corrosion test, the mass reduction rate of the sample per unit area is 1.5-2.5%, and the reduction rate of the 28d flexural strength is 5-10%; after the alkali corrosion resistance test, the mass reduction rate of the sample per unit area is 0.1-0.3%, and the reduction rate of the 28d flexural strength is 2-3%.
The test methods of the performance indexes in the following embodiments are respectively as follows: GB/T17671-1999 in Cement mortar Strength test method (ISO method), JGJ/T70-2009 in basic Performance test method Standard of building mortar, JC/T984-2011 in Polymer Cement waterproof mortar, JC/T2138-2012 in Fine ceramics acid and alkali corrosion resistance test method, and the like.
Example 1
The red mud geopolymer color facing mortar provided by the invention comprises the following components in parts by weight:
the red mud, the mineral powder, the micro silicon powder, the metakaolin, the re-dispersible latex powder, the polyvinyl alcohol fiber, the polycarboxylic acid water reducer, the expanding agent, the quartz sand and the water are placed into a stirrer to be stirred for 3min at the speed of 60-120 r/min, then the sodium silicate and the caustic alkali are added to be stirred for 1-2 min after the rotating speed is increased to 1000r/min, the quartz sand is added to be stirred for 1-2 min continuously at the rotating speed of 60-120 r/min, the stirring speed of 60-120 r/min is maintained, and finally the short fiber is added to be stirred for 2-3 min until the mixture is fully and uniformly mixed.
Example 2
The red mud geopolymer color facing mortar provided by the invention comprises the following components in parts by weight:
the red mud, the mineral powder, the micro silicon powder, the metakaolin, the re-dispersible latex powder, the polyvinyl alcohol fiber, the polycarboxylic acid water reducer, the expanding agent, the quartz sand and the water are placed into a stirrer to be stirred for 3min at the speed of 60-120 r/min, then the sodium silicate and the caustic alkali are added to be stirred for 1-2 min after the rotating speed is increased to 1000r/min, the quartz sand is added to be stirred for 1-2 min continuously at the rotating speed of 60-120 r/min, the stirring speed of 60-120 r/min is maintained, and finally the short fiber is added to be stirred for 2-3 min until the mixture is fully and uniformly mixed.
The performance of the red mud geopolymer color facing mortar provided by the invention is compared with that of other color coating facing materials as follows:
note: (1) lightfastness the lightfastness test method is referenced to pigments.
(2) The national weather resistance standard is a 5-grade representation method of a GB/T250-2008 color fastness fading sample card (gray card). The international standard is ISO Grey scale (grade 1-5), and grade 5 is the best.
Although the present invention has been described with respect to one or more embodiments thereof, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.
Claims (8)
1. The red mud-based polymer color mortar is characterized by comprising the following components: red mud, mineral powder, silica fume, metakaolin, sodium silicate, caustic alkali, redispersible latex powder, short fibers, a polycarboxylic acid water reducing agent, an expanding agent, quartz sand and water;
the components are as follows according to the parts by weight:
15-20 parts of red mud;
15 to 20 parts by weight of mineral powder;
2 to 5 parts of micro silicon powder;
5 to 10 parts by weight of metakaolin;
10-15 parts by weight of sodium silicate;
2 to 3 parts by weight of caustic alkali;
1 to 3 parts by weight of redispersible latex powder;
0.1 to 1 part by weight of short fibers;
0.2 to 0.5 weight part of polycarboxylic acid water reducing agent;
2-5 parts of an expanding agent;
20-30 parts by weight of quartz sand;
15 to 20 parts by weight of water;
the red mud is produced by a Bayer process, the mass content of alumina is 15-25%, and the mass content of iron oxide is 30-45%;
the sodium silicate modulus is 2.3, and the solid content is 40%.
2. The red mud-based polymer color mortar of claim 1, wherein the red mud is dried and ground into powder with a mesh size of 600 meshes, and the pH value of the leachate is 12 to 13.
3. The red mud-based polymer color mortar of claim 1, wherein the mineral powder is blast furnace slag micro powder with an active S95 grade or above.
4. The red mud-based polymer color mortar of claim 1, wherein the silica fume is 800 mesh white silica fume.
5. The red mud-based polymer color mortar of claim 1, wherein the metakaolin is formed by dehydrating kaolin at a temperature of 800-850 ℃ and has a mesh size of 400.
6. The red mud-based polymer color mortar of claim 1, wherein the quartz sand is prepared by uniformly mixing medium sand and fine sand according to the weight part of 1.
7. The red mud-based polymer color mortar of claim 1, wherein the short fibers are one or a mixture of polypropylene fibers, polyvinyl alcohol fibers and basalt fibers, and the fiber length is 6-9 mm.
8. The preparation method of the red mud-based polymer color mortar according to any one of claims 1 to 7, characterized by comprising the following steps:
putting red mud, mineral powder, micro silicon powder, metakaolin, redispersible latex powder, short fibers, a polycarboxylic acid water reducing agent, an expanding agent, quartz sand and water into a stirrer, and stirring for 3min at the speed of 60-120 r/min;
then adding sodium silicate and caustic alkali, increasing the rotating speed to 1000r/min, and continuing stirring for 1-2 min;
then adding quartz sand and continuously stirring for 1-2 min at the rotating speed of 60-120 r/min;
maintaining the stirring speed of 60-120 r/min, and finally adding short fibers and stirring for 2-3 min until the mixture is fully and uniformly mixed.
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| CN103641402A (en) * | 2013-12-09 | 2014-03-19 | 广西启利新材料科技股份有限公司 | Baking-free brick prepared from red mud |
| CN103771801A (en) * | 2014-01-06 | 2014-05-07 | 同济大学 | Dry-mixed ground mortar doped with bayer process red mud and application method thereof |
| CN108821716A (en) * | 2018-06-21 | 2018-11-16 | 同济大学 | A kind of ardealite base anticracking grout for wall insulation system |
| WO2020028292A1 (en) * | 2018-08-03 | 2020-02-06 | United States Gypsum Company | Geopolymer compositions and methods for making same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174755A (en) * | 2015-09-11 | 2015-12-23 | 中国建筑材料科学研究总院 | Red stucco finish prepared by red mud-based alkali-activated cementing material |
| CN105198294A (en) * | 2015-09-11 | 2015-12-30 | 中国建筑材料科学研究总院 | Building insulation mortar prepared by red mud based alkali-activated cementitious material |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641402A (en) * | 2013-12-09 | 2014-03-19 | 广西启利新材料科技股份有限公司 | Baking-free brick prepared from red mud |
| CN103771801A (en) * | 2014-01-06 | 2014-05-07 | 同济大学 | Dry-mixed ground mortar doped with bayer process red mud and application method thereof |
| CN108821716A (en) * | 2018-06-21 | 2018-11-16 | 同济大学 | A kind of ardealite base anticracking grout for wall insulation system |
| WO2020028292A1 (en) * | 2018-08-03 | 2020-02-06 | United States Gypsum Company | Geopolymer compositions and methods for making same |
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