CN112521115A - Green alkali-activated material for repairing protection and preparation method thereof - Google Patents
Green alkali-activated material for repairing protection and preparation method thereof Download PDFInfo
- Publication number
- CN112521115A CN112521115A CN202011416652.5A CN202011416652A CN112521115A CN 112521115 A CN112521115 A CN 112521115A CN 202011416652 A CN202011416652 A CN 202011416652A CN 112521115 A CN112521115 A CN 112521115A
- Authority
- CN
- China
- Prior art keywords
- alkali
- water
- activated
- percent
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C04B28/08—Slag cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building 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
Landscapes
- 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)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a green alkali-activated material for repairing protection, which consists of 55-70% of alkali-activated active matter, 0-20% of concrete waste slurry powder, 1-2% of reinforcing component, 6-10% of alkali-activated active matter, 1.5-2% of water-reducing component and the balance of water, wherein the total mass of the material is 100%. The material of the invention has high early strength and large fluidity and is suitable for construction. The waste concrete slurry powder can provide part of the exciting alkalinity needed by the early reaction, and the aluminosilicate in the waste residue powder has potential alkali-excited active substances, so that the waste residue of the mixing plant can be well absorbed. The addition of the fly ash and the silica fume can improve the fluidity of geopolymer, reduce the yield stress of slurry and meet the fluidity required by repairing protection. The super-dispersed nano reinforcing material is doped, so that the filling effect can be achieved in the alkali-activated reaction process, the dissolution of aluminosilicate minerals is promoted, and the mechanical property of the alkali-activated material is improved. The invention has low cost, is environment-friendly and has higher popularization value.
Description
Technical Field
The invention belongs to the technical field of preparation of structure repairing materials, and particularly relates to a green alkali-activated material for repairing protection and a preparation method thereof.
Background
In nearly thirty years of rapid development of social economy, concrete roads and bridges need to be re-paved and maintained once every decade, and the amount of capital waste caused each year is huge. Concrete projects in China in all countries have aging and disease damage of different degrees, and rapid development of the concrete maintenance industry and rapid upgrade of maintenance cost are promoted. The increase of the burden of concrete aging, maintenance and reinforcement requires that repair protective materials with excellent performance and high durability be selected for reasonably repairing the existing seriously deteriorated concrete facilities.
In addition, the amount of concrete used has increased year by year also due to the rapid development of cities. According to statistics of Chinese concrete networks, the consumption of the concrete in 2019 nationwide reaches more than 20 hundred million cubic meters, and the produced concrete waste slurry, namely unhardened slurry waste which is high in alkalinity, high in water content, low in activity and complex in components and contains heavy metal ions, is increased year by year. Because of the characteristics of the waste slurry, the recycling in the concrete is undoubtedly greatly limited, so that the recycling rate is low, the utilization effect is poor, the treatment cost is high and the like.
The alkali-activated material for novel repair protection is a hot spot of research in academic and engineering circles at present. The main principle of alkali excitation is to excite admixtures containing active calcium-aluminum material phases as main components, such as slag powder, fly ash, silica fume, metakaolin and the like, under an alkaline environment to promote hydration reaction of the admixtures to quickly generate a strong material. However, the amount of concrete waste slurry for alkali-activated materials in China is very small at present, and no engineering example of the green alkali-activated material for repairing protection is reported in China and abroad. In fact, the high alkalinity of the concrete waste slurry can provide part of the activated alkalinity needed by the early reaction, the aluminosilicate has potential alkali activated living matters after being ground, and the green alkali activated material for repairing and protecting is developed by utilizing the existing waste slurry, so that the method for realizing the overall and sustainable development of the economic development, the social harmony and the environmental protection is realized.
Disclosure of Invention
The invention aims to provide a green alkali-activated material for repairing protection and a preparation method thereof.
The invention provides a green alkali-activated material for repairing protection, which consists of alkali-activated active matters, concrete waste slurry powder, a reinforcing component, an alkali activator, a water reducing component and water, wherein the alkali-activated active matters comprise: 55-70% of alkali-activated active matter, 0-20% of concrete waste slurry powder, 1-2% of reinforcing component and alkali activator (Na is used)2Calculated by O) 6-10 percent, the water reducing component 1.5-2 percent and the balance of water, and the total mass of the water reducing component and the balance of water meets 100 percent; the alkali-activated living matter consists of 50-80 parts by mass of slag powder, 0-30 parts by mass of fly ash, 0-30 parts by mass of silica fume and 0-20 parts by mass of metakaolin, and the fly ash, the silica fume and the metakaolin cannot be zero at the same time.
In the invention, the concrete waste slurry powder is waste slurry in a concrete mixing station sedimentation tank, and after being aired or dried and scattered, the concrete waste slurry powder has the median particle diameter D50 of 10-30 mu m and the specific surface area of not less than 300kg/m3The solid waste residue powder of (1).
In the invention, the reinforcing component is any one of nano silicon dioxide, nano calcium carbonate or nano alumina, and the particle size of the nano silicon dioxide, the nano calcium carbonate or the nano alumina is 20-50 nm.
In the invention, the alkali activator is formed by compounding sodium hydroxide and water glass, wherein the purity of the sodium hydroxide is more than or equal to 98 percent, and the mass fraction of water in the water glass is less than or equal to 70 percent; the modulus of the composite excitant can be 1.0, 1.5 and 2.0.
In the invention, the water reducing component is a polycarboxylic acid type high-efficiency water reducing agent, the mol ratio of the monomer Acrylic Acid (AA) to the monomer methyl allyl polyoxyethylene ether (TPEG) is 4:1-5:1, and the proportion of the water reducing component is higher than that of the conventional polycarboxylic acid type high-efficiency water reducing agent so as to meet the setting time, the workability and the strength required by construction.
The invention provides a preparation method of a green alkali-activated material for repairing protection, which comprises the following specific steps:
(1): accurately weighing alkali-excited materials, preparing three alkali-excited agents with different excitant moduli, preparing the alkali-excited materials 1d before use, and sealing and storing at room temperature; the modulus of the excitant can be 1.0, 1.5, and 2.0;
(2): weighing alkali-activated active substances and concrete waste slurry powder, mixing and uniformly stirring;
(3): accurately weighing the reinforcing component and half of water, putting the reinforcing component and the half of water into a beaker, and dispersing for 10 minutes by using an ultrasonic device (400W, 40 khz) to obtain a uniform nano-material suspension, wherein the nano-material suspension is required to be tested within 3min to prevent clustering again;
(4): adding the nanometer material suspension obtained in the step (3) into the uniformly stirred product obtained in the step (2), and slowly stirring for at least 3min by using a clean slurry stirrer to obtain a mixture;
(5): accurately weighing the alkali activator obtained in the step (1), the water-reducing component and the rest water in the stirring process in the step (4), wherein the rest water is water used in removing the alkali activator, the water used in the water-reducing component and the water used in the step (3); mixing the alkali activator, the water reducing component and the rest water, and uniformly stirring;
(6): uniformly pouring the solution obtained in the step (5) into the mixture obtained in the step (4), and continuously stirring at a low speed for at least 5 min;
(7): and (3) after testing the relevant performance, pouring and molding, covering a sample with a plastic film, standing for 24 hours in a laboratory with the temperature of 20 ℃ and the relative humidity of more than 50%, demolding, and moving into a standard curing box for curing.
The principle can be briefly described as follows:
under an alkaline environment, the active calcium oxide and the active aluminum oxide in the mineral powder and the fly ash are quickly dissolved into calcium ions and aluminum ions which are respectively combined with silicate ions to quickly generate a gelatinous hydration product (C-A-S-H gel) with strength; the waste residue powder of the mixing plant provides part of the excitation alkalinity needed by early reaction, and the waste residue powder contains aluminosilicate with potential alkali excitation activity; silica fume is doped and filled in the stacking pores of the slag and the fly ash, so that the thickness of a liquid film on the surface of solid particles is increased by the released excitant, and the fluidity of the mixture is improved; the super-dispersed nano silicon dioxide is doped to provide a siliceous raw material, so that the formation of a precursor is facilitated, and the compressive strength of the hardened slurry is improved; the ultra-dispersed nano alumina is doped, so that the hydration process of alkali excitation can be accelerated, more C-A-S-H gel can be generated, and the early compressive strength of the matrix can be improved; the super-dispersed nano calcium carbonate is doped, so that more calcium silicate hydrate and calcium aluminate hydrate gel can be induced to form a compact microstructure; the three nano materials have obvious physical filling effect, play a micro-aggregate effect, optimize the pore size distribution of the hardened slurry and densify the hardened slurry.
Compared with the prior art, the invention has the beneficial effects that: compared with the traditional repairing and protecting material (taking composite cement and sulphoaluminate cement as main cementing materials), the green alkali-activated material is subjected to alkali activation by using industrial solid waste slag powder, fly ash and other materials to quickly obtain the strength, and the early strength required by repairing and protecting is met. In addition, the stirring station waste residue is used as an auxiliary material, on one hand, part of the activation alkalinity needed by the early reaction can be provided, on the other hand, aluminosilicate in the waste residue powder has potential alkali activation active substances, and a good way of absorbing the stirring station waste residue is provided. The addition of silica fume can improve the fluidity of geopolymer and reduce the yield stress of slurry. The fluidity required for repairing protection is satisfied. In addition, the super-dispersed nano reinforcing material is doped, so that the filling effect can be achieved in the alkali-activated reaction process, the dissolution of aluminosilicate minerals is promoted, and the mechanical property of the alkali-activated material is improved. The invention has low cost, is environment-friendly and has higher popularization value.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
In the embodiment, the green alkali-activated active matter for repairing and protecting comprises, by mass, 38.5% of slag powder, 11% of fly ash, 5.5% of silica fume, 20% of waste concrete slurry powder of a mixing plant, 1.5% of reinforcing component nano-silica, and an alkali activator (taking Na as an active ingredient)2Calculated by O), the water reducing component accounts for 7 percent, the water reducing component accounts for 1.5 percent, and the water accounts for 15 percent, and the total mass percent is 100 percent.
The slag powder is S95 level mineral powder produced by Hunan Sanhong building materials Co.Ltd; the fly ash is Yueyang power plant II-grade fly ash; the silica fume is a plate aggregation state silica powder, SiO, provided by Sichuan Lantian building materials Limited company2The content is more than 90 percent; the modulus of the alkali activator is 1.5; the nano silicon dioxide is commercially available, and the median particle size D50 is 30 nm; the water reducing component is provided by new materials for construction limited company in China and Western construction, the solid content is 22 percent, and the water reducing rate is more than 30 percent; the water is ordinary tap water.
The preparation method comprises the following steps:
(1): accurately weighing alkali-excited materials, preparing three alkali-excited agents with different excitant moduli, preparing the alkali-excited materials 1d before use, and sealing and storing at room temperature; the modulus of the excitant is 1.0, 1.5 and 2.0;
(2): weighing alkali-activated active substances and concrete waste slurry powder, mixing and uniformly stirring;
(3): accurately weighing the reinforcing component and half of water, putting the reinforcing component and the half of water into a beaker, and dispersing for 10 minutes by using an ultrasonic device (400W, 40 khz) to obtain a uniform nano-material suspension, wherein the nano-material suspension is required to be tested within 3min to prevent clustering again;
(4): adding the nanometer material suspension liquid obtained in the step (3) into the alkali-activated active matter uniformly stirred in the step (2), and slowly stirring for at least 3min by using a net slurry stirrer;
(5): accurately weighing the alkali activator, the water reducing component and the residual water in the stirring process of the step (4), wherein the residual water is the water removed from the alkali activator, the water in the water reducing component and the water in the step three; mixing alkali activator, water reducing component and water, and stirring uniformly;
(6): uniformly pouring the solution obtained in the step (5) into the mixture obtained in the step (4), and continuously stirring at a low speed for at least 5 min;
(7): and (3) after testing the relevant performance, pouring and molding, covering a sample with a plastic film, standing for 24 hours in a laboratory with the temperature of 20 ℃ and the relative humidity of more than 50%, demolding, and moving into a standard curing box for curing.
Example 2
In the embodiment, the green alkali-activated material for repairing and protecting comprises 36 mass parts of slag powder, 12 mass parts of fly ash, 12 mass parts of silica fume, 15 mass parts of concrete waste slurry powder of a mixing plant, 1.5 mass parts of nano-silica, and an alkali activator (Na is used)2Calculated by O), the water reducing component accounts for 7 percent, the water reducing component accounts for 1.5 percent, and the water accounts for 15 percent, and the total mass percent is 100 percent.
The slag powder is S95 level mineral powder produced by Hunan Sanhong building materials Co.Ltd; the fly ash is Yueyang power plant II-grade fly ash; the silica fume is a plate aggregation state silica powder, SiO, provided by Sichuan Lantian building materials Limited company2The content is more than 90 percent; the alkali excitation modulus is 1.5; the nano silicon dioxide is commercially available, and the median particle size D50 is 30 nm; the water reducing component is provided by new materials for construction limited company in China and Western construction, the solid content is 22 percent, and the water reducing rate is more than 30 percent; the water is ordinary tap water.
The preparation was carried out as described in example 1.
Example 3
In the embodiment, the green alkali-activated material for repairing and protecting comprises 39% of slag powder, 13% of fly ash, 12% of silica fume, 10% of concrete waste slurry powder of a mixing plant, 2% of nano-alumina and an alkali activator (Na is used)2Calculated by O), the water reducing component accounts for 7 percent, the water reducing component accounts for 2 percent, the water accounts for 15 percent, and the total mass percent is 100 percent.
The slag powder is S95 level mineral powder produced by Hunan Sanhong building materials Co.Ltd; the fly ash is Yueyang power plant II-grade fly ash; the silica fume is a plate aggregation state silica powder, SiO, provided by Sichuan Lantian building materials Limited company2The content is more than 90 percent; the alkali excitation modulus is 1.5; the nano-alumina is commercially available, and the median particle size D50 is 25 nm; the water reducing component is provided by new materials for construction limited company in China and Western construction, the solid content is 22 percent, and the water reducing rate is more than 30 percent; the water is ordinary tap water.
The preparation was carried out as described in example 1.
Example 4
In the embodiment, the green alkali-activated material for repairing and protecting comprises, by mass, 35% of slag powder, 14% of fly ash, 20% of silica fume, 2% of slag powder in a stirring station, 3% of nano calcium carbonate and an alkali activator (Na is used)2Calculated by O) accounts for 9 percent, the water reducing component accounts for 2 percent, the water accounts for 15 percent, and the total mass percent is 100 percent.
The slag powder is S95 level mineral powder produced by Hunan Sanhong building materials Co.Ltd; the fly ash is Yueyang power plant II-grade fly ash; the silica fume is a plate aggregation state silica powder, SiO, provided by Sichuan Lantian building materials Limited company2The content is more than 90 percent; the alkali excitation modulus is 1.5; the nano calcium carbonate is commercially available, and the median particle size D50 is 30 nm; the water reducing component is provided by new materials for construction limited company in China and Western construction, the solid content is 22 percent, and the water reducing rate is more than 30 percent; the water is ordinary tap water.
The preparation was carried out as described in example 1.
The performance of the embodiment is detected, and the test refers to GB/T8077 concrete admixture homogeneity test method to test the flow performance of the green alkali-excited material; testing the setting time by referring to GBT1346 'inspection method for water consumption, setting time and stability of standard consistency of cement'; the compressive strength test specimens were 40mm × 40mm × 40mm cubes, and the test was performed on a universal tester at a loading rate of 0.8MPa/s, and the average of the results of the compressive strength test of 6 test specimens was taken as a representative value.
The results are shown in Table 1:
table 1 results of performance test of each example
| Detecting items | Example 1 | Example 2 | Example 3 | Example 4 |
| Initial setting time (min) | 80 | 80 | 70 | 50 |
| Final setting time (min) | 110 | 105 | 105 | 80 |
| Fluidity (mm) | 200 | 250 | 290 | 260 |
| 1d Strength (MPa) | 24.2 | 31.5 | 30.1 | 39.1 |
| 3d Strength (MPa) | 40.2 | 44.1 | 42.7 | 47.0 |
| 28d Strength (MPa) | 58.1 | 60.6 | 64.4 | 72.3 |
To sum up, the various embodiments and the detection results show that the green alkali-activated material prepared by the preparation method of the technical scheme has the initial setting time not earlier than 35min, the net slurry fluidity more than 200mm, the 1d compressive strength more than 24MPa and the 28d compressive strength more than 58MPa, and can meet the performance requirements of the repairing/protecting material. The material consumes partial waste residues of the mixing plant, does not occupy cement resources, and has wide application prospect and remarkable social benefit.
Claims (6)
1. A green alkali-activated material for repairing protection is characterized in that: the concrete mortar consists of alkali-activated active substances, concrete waste slurry powder, a reinforcing component, an alkali activator, a water reducing component and water, wherein: 55-70% of alkali-activated active matter, 0-20% of concrete waste slurry powder, 1-2% of reinforcing component and alkali activator (Na is used)2Calculated by O) 6-10 percent, the water reducing component 1.5-2 percent and the balance of water, and the total mass of the water reducing component and the balance of water meets 100 percent; the alkali-activated living matter consists of 50-80 parts by mass of slag powder, 0-30 parts by mass of fly ash, 0-30 parts by mass of silica fume and 0-20 parts by mass of metakaolin, and the fly ash, the silica fume and the metakaolin cannot be zero at the same time.
2. The green alkali-activated material for repair protection according to claim 1, wherein: the concrete waste slurry powder is waste slurry in a concrete mixing station sedimentation tank, and after being aired or dried and scattered, the concrete waste slurry powder has the median particle diameter D50 of 10-30 mu m and the specific surface area of not less than 300kg/m3The solid waste residue powder of (1).
3. The green alkali-activated material for repair protection according to claim 1, wherein: the reinforcing component is any one of nano silicon dioxide, nano calcium carbonate or nano alumina, and the particle size of the nano silicon dioxide, the nano calcium carbonate or the nano alumina is 20-50 nm.
4. The green alkali-activated material for repair protection according to claim 1, wherein: the alkali activator is formed by compounding sodium hydroxide and water glass, wherein the purity of the sodium hydroxide is more than or equal to 98 percent, and the mass fraction of water in the water glass is less than or equal to 70 percent; the modulus of the composite excitant can be 1.0, 1.5 and 2.0.
5. The green alkali-activated material for repair protection according to claim 1, wherein: the water reducing component is a polycarboxylic acid type high-efficiency water reducing agent, the mole ratio of Acrylic Acid (AA) and methyl allyl polyoxyethylene ether (TPEG) is 4:1-5:1, and the proportion is higher than that of the conventional polycarboxylic acid type high-efficiency water reducing agent, so that the setting time, the workability and the strength of construction requirements are met.
6. The method for preparing the green alkali-activated material for repairing protection according to claim 1, which comprises the following steps:
(1): accurately weighing alkali-excited materials, preparing three alkali-excited agents with different excitant moduli, preparing the alkali-excited materials 1d before use, and sealing and storing at room temperature; the modulus of the excitant can be 1.0, 1.5, and 2.0;
(2): weighing alkali-activated active substances and concrete waste slurry powder, mixing and uniformly stirring;
(3): accurately weighing the reinforcing component and half of water, putting the reinforcing component and the half of water into a beaker, and dispersing for 10 minutes by using an ultrasonic device (400W, 40 khz) to obtain a uniform nano-material suspension, wherein the nano-material suspension is required to be tested within 3min to prevent clustering again;
(4): adding the nanometer material suspension obtained in the step (3) into the uniformly stirred product obtained in the step (2), and slowly stirring for at least 3min by using a clean slurry stirrer to obtain a mixture;
(5): accurately weighing the alkali activator obtained in the step (1), the water-reducing component and the rest water in the stirring process in the step (4), wherein the rest water is water used in removing the alkali activator, the water used in the water-reducing component and the water used in the step (3); mixing the alkali activator, the water reducing component and the rest water, and uniformly stirring;
(6): uniformly pouring the solution obtained in the step (5) into the mixture obtained in the step (4), and continuously stirring at a low speed for at least 5 min;
(7): and (3) after testing the relevant performance, pouring and molding, covering a sample with a plastic film, standing for 24 hours in a laboratory with the temperature of 20 ℃ and the relative humidity of more than 50%, demolding, and moving into a standard curing box for curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011416652.5A CN112521115A (en) | 2020-12-07 | 2020-12-07 | Green alkali-activated material for repairing protection and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011416652.5A CN112521115A (en) | 2020-12-07 | 2020-12-07 | Green alkali-activated material for repairing protection and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112521115A true CN112521115A (en) | 2021-03-19 |
Family
ID=74997909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011416652.5A Pending CN112521115A (en) | 2020-12-07 | 2020-12-07 | Green alkali-activated material for repairing protection and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112521115A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113248191A (en) * | 2021-06-21 | 2021-08-13 | 长沙理工大学 | Inert concrete waste slurry solidified material and preparation method thereof |
| CN113387461A (en) * | 2021-05-28 | 2021-09-14 | 中建西部建设西南有限公司 | System and method for stably recycling waste slurry of mixing plant |
| CN113603402A (en) * | 2021-07-28 | 2021-11-05 | 武汉工程大学 | Method for preparing anti-carbonization concrete by using waste slurry of mixing plant |
| CN113716898A (en) * | 2021-07-30 | 2021-11-30 | 东南大学 | Modified high-strength geopolymer cementing material and preparation method thereof |
| CN114671634A (en) * | 2022-05-30 | 2022-06-28 | 河北工业大学 | Light-heat-preservation-high-strength geopolymer containing solid wastes and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105330237A (en) * | 2015-11-09 | 2016-02-17 | 同济大学 | Baking-free brick produced from waste residues of concrete batching plant and preparation method thereof |
| CN105366974A (en) * | 2015-11-20 | 2016-03-02 | 广州大学 | Method for preparation of regenerated fine powder from concrete mixing station waste residue, prepared regenerated fine powder and use thereof |
| CN105645800A (en) * | 2015-12-31 | 2016-06-08 | 中建商品混凝土成都有限公司 | Waste slurry recycling and reusing technology of concrete mixing station |
| CN105712669A (en) * | 2016-01-23 | 2016-06-29 | 中国地质大学（武汉） | Geopolymer-fiber road pavement mending material and preparation method thereof |
| CN107814498A (en) * | 2016-09-13 | 2018-03-20 | 纳米及先进材料研发院有限公司 | The dry-mixed alkali-activated carbonatite binder materials of nano modification for Rapid-Repair |
| CN110386769A (en) * | 2019-07-26 | 2019-10-29 | 中建商品混凝土有限公司 | A kind of composite blend and its preparation method and application based on mixing plant waste residue activating technology |
| CN110482972A (en) * | 2019-07-16 | 2019-11-22 | 广州大学 | A kind of morning strong pavement patching material and preparation method thereof |
-
2020
- 2020-12-07 CN CN202011416652.5A patent/CN112521115A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105330237A (en) * | 2015-11-09 | 2016-02-17 | 同济大学 | Baking-free brick produced from waste residues of concrete batching plant and preparation method thereof |
| CN105366974A (en) * | 2015-11-20 | 2016-03-02 | 广州大学 | Method for preparation of regenerated fine powder from concrete mixing station waste residue, prepared regenerated fine powder and use thereof |
| CN105645800A (en) * | 2015-12-31 | 2016-06-08 | 中建商品混凝土成都有限公司 | Waste slurry recycling and reusing technology of concrete mixing station |
| CN105712669A (en) * | 2016-01-23 | 2016-06-29 | 中国地质大学（武汉） | Geopolymer-fiber road pavement mending material and preparation method thereof |
| CN107814498A (en) * | 2016-09-13 | 2018-03-20 | 纳米及先进材料研发院有限公司 | The dry-mixed alkali-activated carbonatite binder materials of nano modification for Rapid-Repair |
| CN110482972A (en) * | 2019-07-16 | 2019-11-22 | 广州大学 | A kind of morning strong pavement patching material and preparation method thereof |
| CN110386769A (en) * | 2019-07-26 | 2019-10-29 | 中建商品混凝土有限公司 | A kind of composite blend and its preparation method and application based on mixing plant waste residue activating technology |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113387461A (en) * | 2021-05-28 | 2021-09-14 | 中建西部建设西南有限公司 | System and method for stably recycling waste slurry of mixing plant |
| CN113248191A (en) * | 2021-06-21 | 2021-08-13 | 长沙理工大学 | Inert concrete waste slurry solidified material and preparation method thereof |
| CN113603402A (en) * | 2021-07-28 | 2021-11-05 | 武汉工程大学 | Method for preparing anti-carbonization concrete by using waste slurry of mixing plant |
| CN113716898A (en) * | 2021-07-30 | 2021-11-30 | 东南大学 | Modified high-strength geopolymer cementing material and preparation method thereof |
| CN113716898B (en) * | 2021-07-30 | 2022-08-19 | 东南大学 | Modified high-strength geopolymer cementing material and preparation method thereof |
| CN114671634A (en) * | 2022-05-30 | 2022-06-28 | 河北工业大学 | Light-heat-preservation-high-strength geopolymer containing solid wastes and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112521115A (en) | Green alkali-activated material for repairing protection and preparation method thereof | |
| CN110790552B (en) | Waste brick regenerated ultrahigh-toughness mixture and preparation method and application thereof | |
| CN114591049B (en) | Method for preparing green mortar by using construction waste | |
| Ma et al. | Effect of shrinkage reducing admixture on drying shrinkage and durability of alkali-activated coal gangue-slag material | |
| CN110041035B (en) | C30 high-impermeability concrete with low consumption of rubber materials and preparation method thereof | |
| CN111423180A (en) | High-fluidity environment-friendly ultra-high-performance concrete and preparation method thereof | |
| CN108328977B (en) | Concrete repairing material | |
| CN112408829B (en) | Solid waste reclaimed sand and preparation method and application thereof | |
| Zou et al. | Feasibility of recycling autoclaved aerated concrete waste for partial sand replacement in mortar | |
| CN111847921B (en) | Low clinker cement and preparation method and application thereof | |
| CN109970377A (en) | A kind of water soluble organic polymer toughening slag base geological polymer cementitious material and preparation method | |
| Ye et al. | Combined use of recycled concrete aggregate and glass cullet in mortar: Strength, alkali expansion and chemical compositions | |
| Kara et al. | The usage of fluorescent waste glass powder in concrete | |
| CN110304883A (en) | A kind of protofibre cement-base composite material and preparation method thereof | |
| Shen et al. | High-performance artificial aggregate prepared with recycled concrete powder and its impact on concrete properties | |
| Liu et al. | Assessment and prediction of the mechanical properties of ternary geopolymer concrete | |
| CN115925359A (en) | Coal gangue base polymer green filling material and preparation method thereof | |
| CN110950584B (en) | Silica fume/volcanic ash based geopolymer concrete and preparation method thereof | |
| Xu et al. | Enhancing the mechanical and durability properties of fly ash-based geopolymer mortar modified by polyvinyl alcohol fibers and styrene butadiene rubber latex | |
| Peng et al. | Influence of recycled aggregate defects on the durability of recycled aggregate concrete | |
| Qiu et al. | Study on new type of concrete air-entraining agent | |
| CN112777983A (en) | Concrete rapid repairing material and preparation method thereof | |
| Hwang et al. | Improving the strength and engineering properties of alkali-activated slag–rice husk ash paste at the early ages with addition of various magnesium oxide content | |
| LU504510B1 (en) | Machine-made sand geopolymer alkali activator concrete | |
| Mei et al. | Effect of Styrene-Acrylic Emulsion on Crack Resistance of Cement-Based Materials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210319 |
|
| WD01 | Invention patent application deemed withdrawn after publication |