CN113563032A - Dry-mixed mortar and processing method thereof - Google Patents
Dry-mixed mortar and processing method thereof Download PDFInfo
- Publication number
- CN113563032A CN113563032A CN202110980926.1A CN202110980926A CN113563032A CN 113563032 A CN113563032 A CN 113563032A CN 202110980926 A CN202110980926 A CN 202110980926A CN 113563032 A CN113563032 A CN 113563032A
- Authority
- CN
- China
- Prior art keywords
- dry
- sand
- mixed mortar
- machine
- fine aggregate
- 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
- C04B28/04—Portland 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/12—Waste materials; Refuse from quarries, mining or the like
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
- C04B24/383—Cellulose or derivatives thereof
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The application relates to the technical field of building materials, and particularly discloses dry-mixed mortar and a processing method thereof. The dry-mixed mortar is prepared from the following raw materials in parts by weight: 40-50 parts of cement, 150 parts of fine aggregate, 0-0.8 part of hydroxypropyl methyl cellulose and 20-30 parts of water; the fine aggregate consists of machine-made sand and iron tailing sand, the particle size of the fine aggregate is 0.1-4.75mm, and the weight ratio of the machine-made sand to the iron tailing sand is (7-9) to (3-1). The preparation method comprises the steps of weighing the raw materials according to the formula ratio, and then mixing and stirring the cement, the machine-made sand, the iron tailing sand, the hydroxypropyl methyl cellulose and the water uniformly to obtain the dry-mixed mortar. The application not only improves the harmless recycling rate of the construction wastes and the industrial solid wastes, but also ensures that the prepared dry-mixed mortar has better compression resistance and crack resistance.
Description
Technical Field
The application relates to the technical field of building materials, in particular to dry-mixed mortar and a processing method thereof.
Background
The sand is one of the main materials consisting of building materials, is generally called as fine aggregate (also called as fine aggregate) in construction, plays a role in filling concrete products, can improve the compactness of concrete, and has great influence on the performance of the concrete.
The sand mainly comprises natural sand and machine-made sand, and the sand for construction in China at present mainly comprises the natural sand. However, with the development of the construction industry, the sand consumption of the construction market is larger and larger, the quality requirement is higher and higher, and the qualified natural sand resources are less and less. Especially for the natural sand of nearby objects in Yunnan and Guizhou areas with deficient natural sand resources, the sand for local construction projects needs to be transported from remote places, the transportation distance is long, the price is high, the construction cost is high, and the requirements of construction projects are difficult to meet.
Therefore, the selection of proper machine-made sand or industrial waste to replace natural sand for preparing dry-mixed mortar is still a problem which needs to be solved urgently in the building sandstone industry.
Disclosure of Invention
In order to ensure good compression strength and crack resistance of the dry-mixed mortar, the application provides the dry-mixed mortar and a processing method thereof.
In a first aspect, the present application provides a dry-mixed mortar, which adopts the following technical scheme:
the dry-mixed mortar is prepared from the following raw materials in parts by weight:
40-50 parts of cement;
120 portions of fine aggregate and 150 portions of fine aggregate;
0-0.8 part of hydroxypropyl methyl cellulose;
20-30 parts of water;
the fine aggregate consists of machine-made sand and iron tailing sand, the particle size of the fine aggregate is 0.1-4.75mm, and the weight ratio of the machine-made sand to the iron tailing sand is (7-9) to (3-1).
By adopting the technical scheme, the dosage ranges of the machine-made sand and the iron tailing sand in the fine aggregate are controlled, the harmless recycling rate of the construction waste and the industrial solid waste is improved, and the dry-mixed mortar prepared by mixing the fine aggregate, cement, hydroxypropyl methylcellulose and water also has better compression resistance and crack resistance.
In addition, the fine powder and the silt in the fine aggregate can be mixed into the fine aggregate, gaps among the fine aggregates are filled, the grading of sand is optimized, the optimization effect is more and more obvious along with the adjustment of the mixing amount ratio of the machine-made sand and the iron tailing sand, the optimal grading range is reached when the weight ratio of the machine-made sand to the iron tailing sand is (7-9) to (3-1), the skeleton effect of coarse particles in the fine aggregate is fully exerted, and meanwhile, the filling of the fine particles in the fine aggregate enables the dry-mixed mortar to reach the maximum compact state. The reason analysis is as follows: the calcium carbonate, the cement gel and the unhydrated cement particles in the construction waste micro-powder respectively have the capacity of forming hydrated calcium aluminate carbonate and hydrated calcium silicate carbonate as cement hydrated crystal blanks and the capacity of continuously hydrating to form gel products. Meanwhile, minerals such as silicon and aluminum in the construction waste micro powder have volcanic ash activity and have the effect of forming CSH gel by secondary reaction with calcium hydroxide under the alkali excitation action, so that the dry-mixed mortar has better improvement effect on the compression resistance and the crack resistance.
Preferably, the preparation method of the machine-made sand comprises the following steps: and crushing the building waste concrete blocks, screening the building waste concrete blocks by using a vibrating screen, and then cutting 0.1-4.75mm of building waste concrete particles to obtain the machine-made sand.
By adopting the technical scheme, the construction waste is crushed and screened to replace natural sand to prepare the dry-mixed mortar, so that the basic performance of the dry-mixed mortar is not influenced, natural resources are saved, waste is changed into valuable, and the recycling rate of the construction waste is improved.
Preferably, the grain diameter of the machine-made sand is 0.15-4.75mm, and the fineness modulus of the iron tailing sand is 1.5-2.1.
Preferably, the weight ratio of the machine sand to the iron tailings sand is 9: 1.
By adopting the technical scheme, the grain diameter, fineness modulus and dosage proportion of the machine-made sand and the iron tailing sand are further optimized, and the compression resistance and crack resistance of the dry-mixed mortar can be effectively improved.
Preferably, the weight ratio of the cement to the fine aggregate to the water is 1 (2.4-3.5) to (0.4-0.6).
Preferably, the weight ratio of the cement to the fine aggregate to the water is 1:3: 0.5.
By adopting the technical scheme, the dosage proportion of the cement, the fine aggregate and the water is further optimized, so that the prepared dry-mixed mortar has excellent compression strength and crack resistance.
Preferably, the cement is selected from p.o42.5 cement.
By adopting the technical scheme, the P.O42.5 cement is matched with the fine aggregate, so that the compression strength and the crack resistance of the dry-mixed mortar are improved, the machine-made sand and the iron tailing sand can completely replace natural sand after being compounded, and even the compression strength of the prepared dry-mixed mortar is higher than that of the dry-mixed mortar prepared from the natural sand.
Preferably, the use amount of the hydroxypropyl methyl cellulose is selected to be 0.3-0.5 part.
Preferably, the hydroxypropyl methylcellulose is selected from hydroxypropyl methylcellulose having a viscosity of 10 ten thousand Mpa · s.
By adopting the technical scheme, the hydroxypropyl methyl cellulose HPMC, also called hydroxypropyl methylcellulose, belongs to one of non-ionic cellulose mixed ether. The added HPMC can be used as a water retention agent of dry-mixed mortar, can improve the water content in the dry-mixed mortar, and the dry-mixed mortar is not cracked due to too fast drying, thereby being beneficial to enhancing the strength of the dry-mixed mortar after hardening.
In a second aspect, the application provides a method for processing dry-mixed mortar, which adopts the following technical scheme: a processing method of dry-mixed mortar comprises the following steps: weighing the raw materials according to the formula ratio, and then mixing and stirring the cement, the machine-made sand, the iron tailing sand, the hydroxypropyl methyl cellulose and the water uniformly to obtain the dry-mixed mortar.
By adopting the technical scheme, the preparation process flow is simple, and meanwhile, the dry-mixed mortar prepared by mixing cement, machine-made sand, iron tailing sand, hydroxypropyl methyl cellulose and water has better compressive strength and crack resistance, and the harmless recycling rate of the construction waste and industrial solid waste is improved.
In summary, the present application has the following beneficial effects:
1. according to the application, the use amount range of the machine-made sand and the iron tailing sand in the fine aggregate is controlled, so that the harmless cyclic utilization rate of the construction waste and the industrial solid waste is improved, and the dry-mixed mortar prepared by mixing the fine aggregate, cement, hydroxypropyl methyl cellulose and water also has good compression resistance and crack resistance.
2. The preparation process flow is simple, and the dry-mixed mortar prepared simultaneously has better compressive strength and crack resistance, saves natural resources, changes waste into valuable and improves the recycling rate of construction waste.
Detailed Description
The present application will be described in further detail with reference to examples.
First, an embodiment
Example 1: the raw materials and the dosage of the dry-mixed mortar are shown in the table 1. Wherein the grain diameter range of the machine-made sand is 0.15-4.75mm, and the fineness modulus of the iron tailing sand is 1.5.
The processing method of the dry-mixed mortar comprises the following steps:
1) and crushing the building waste concrete blocks, screening and cutting building waste concrete particles with the particle size of 0.15-4.75mm after the building waste concrete blocks pass through a vibrating screen to obtain the machine-made sand.
2) Weighing the raw material components according to the formula amount shown in the table 1, and then mixing and stirring the cement, the machine-made sand, the iron tailing sand, the hydroxypropyl methylcellulose and the tap water uniformly in a mortar stirrer at normal temperature and normal pressure to obtain the dry-mixed mortar.
Example 2: a dry-mixed mortar which is different from that of example 1 in that: the raw materials and the amounts of the dry-blended sand are different, and the specific reference is made to table 1. Wherein the grain diameter range of the machine-made sand is 0.1-4.75mm, and the fineness modulus of the iron tailing sand is 2.1. Meanwhile, in the processing method of the dry-mixed mortar, the range of the construction waste concrete particles screened and intercepted by the vibrating screen is 0.1-4.75 mm.
Example 3: a dry-mixed mortar which is different from that of example 1 in that: the raw materials and the amounts of the dry-blended sand are different, and the specific reference is made to table 1. Wherein the grain diameter range of the machine-made sand is 0.15-4.35mm, and the fineness modulus of the iron tailing sand is 1.5. Meanwhile, in the processing method of the dry-mixed mortar, the range of the construction waste concrete particles screened and intercepted by the vibrating screen is 0.15-4.35 mm.
Examples 4 to 7: a dry-mixed mortar which is different from example 3 in that: the raw materials and the amounts of the dry-blended sand are different, and the specific reference is made to table 1.
TABLE 1 Dry-mixed mortars according to examples 1 to 7 with respect to the raw material composition and the amounts (kg)
Second, comparative example
Comparative example 1: a dry-mixed mortar which differs from example 7 in that: the fine aggregate is natural river sand.
Comparative example 2: a dry-mixed mortar which differs from example 7 in that: the fine aggregate comprises machine-made sand and iron tailing sand, wherein the ratio of the machine-made sand to the iron tailing sand is 6: 4.
Comparative example 3: a dry-mixed mortar which differs from example 7 in that: the fine aggregate comprises machine-made sand and iron tailing sand, wherein the ratio of the machine-made sand to the iron tailing sand is 4: 5.
Third, performance detection and analysis
Test one: test objects for testing compression strength and cracking strength: the dry-mixed mortars prepared in examples 1 to 7 were used as test samples 1 to 7, and the dry-mixed mortars prepared in comparative examples 1 to 3 were used as control samples 1 to 3.
The test method comprises the following steps:
1. the sludge content (%), stone powder content (%) and MB value in examples 1 to 7 and comparative examples 1 to 3 were measured according to the method of GB/T14684-2011 "Sand for construction".
2. The 7d compressive strength (MPa), the 28d compressive strength (MPa), the 7d flexural strength (MPa) and the 28d flexural strength (MPa) of examples 1 to 7 and comparative examples 1 to 3 were measured according to GB/T50081-2002 Standard test methods for mechanical Properties of ordinary concrete.
TABLE 2
| Content of mud (%) | Stone powder content (%) | MB value | |
| Example 1 | 0.8 | 11 | 1.0 |
| Example 2 | 0.7 | 13 | 0.8 |
| Example 3 | 1.1 | 12 | 1.1 |
| Example 4 | 1.3 | 16 | 1.4 |
| Example 5 | 0.8 | 17 | 1.2 |
| Example 6 | 0.7 | 14 | 1.1 |
| Example 7 | 0.8 | 12 | 1.2 |
| Comparative example 1 | 1.9 | 12 | 1.3 |
| Comparative example 2 | 1.6 | 10 | 1.2 |
| Comparative example 3 | 1.4 | 11 | 1.0 |
TABLE 3
As can be seen by combining examples 1 to 7, comparative examples 1 to 3 and commercial products 1 to 2 and by combining tables 2 to 3, the sand contents (%), the stone powder contents (%) and the MB value contents in examples 1 to 7 and comparative examples 1 to 3 were equivalent. Secondly, the 7d and 28d compressive strengths of examples 1-7 are significantly greater than those of comparative examples 1-3 and commercial products 1-2. However, the 7d flexural strength and 28d flexural strength of examples 1 to 7 were comparable to those of comparative examples 1 to 3 and commercial product 2, while the 7d flexural strength and 28d flexural strength of examples 1 to 7 were superior to those of commercial product 1. Therefore, the compressive strength of the dry-mixed mortar can be effectively improved by adjusting the dosage ranges of the cement, the hydroxypropyl methylcellulose, the water, the machine-made sand and the iron tailing sand on the basis of not influencing the flexural strength, and the mud content and the stone powder content of the machine-made sand do not influence the compressive, flexural and crack resistant effects of the dry-mixed mortar. In addition, the fine powder and the silt which are positioned in the fine aggregate are mixed into the fine aggregate, gaps among the fine aggregates are filled, the grading of sand is optimized, the optimization effect is more and more obvious along with the adjustment of the mixing amount ratio of the machine-made sand and the iron tailing sand, the optimal grading range is reached when the weight ratio of the machine-made sand to the iron tailing sand is (7-9) to (3-1), the skeleton effect of coarse particles in the fine aggregate is fully exerted, and meanwhile, the filling of the fine particles in the fine aggregate enables the dry-mixed mortar to reach the maximum compact state, so that the dry-mixed mortar has better compressive strength.
As can be seen by combining examples 1 to 7, comparative examples 1 to 3 and commercially available products 1 to 2 and by combining Table 3, in addition, the values of the 7d and 28d fold ratios of examples 1 to 7 were smaller than those of comparative examples 1 to 3 and commercially available products 1 to 2, and it can be seen that the crack resistance of examples 1 to 7 was superior to those of comparative examples 1 to 3 and commercially available products 1 to 2.
As can be seen by combining example 7, comparative examples 1-3, and Table 3, the values of the 7d and 28d fold ratios for example 7 are both lower than for comparative examples 1-3; while the 7d and 28d compressive strengths of example 7 were significantly greater than those of comparative examples 1-3. According to the fact that the lower the breaking pressure ratio is, the better the flexibility of the dry-mixed mortar is represented, the compressive strength and the crack resistance of the dry-mixed mortar are improved by controlling the dosage ranges of the control sand and the iron tailing sand.
The specific embodiments are merely illustrative of the present application and are not restrictive of the present application, and those skilled in the art can make modifications of the embodiments as required without any inventive contribution thereto after reading the present specification, but only protected by the patent laws within the scope of the claims of the present application.
Claims (8)
1. The dry-mixed mortar is characterized by being prepared from the following raw materials in parts by weight:
40-50 parts of cement;
120 portions of fine aggregate and 150 portions of fine aggregate;
0-0.8 part of hydroxypropyl methyl cellulose;
20-30 parts of water;
the fine aggregate consists of machine-made sand and iron tailing sand, the particle size of the fine aggregate is 0.1-4.75mm, and the weight ratio of the machine-made sand to the iron tailing sand is (7-9) to (3-1).
2. The dry-mixed mortar of claim 1, wherein the machine-made sand is prepared by a method comprising: and crushing the building waste concrete blocks, screening the building waste concrete blocks by using a vibrating screen, and then cutting 0.1-4.75mm of building waste concrete particles to obtain the machine-made sand.
3. The dry-mixed mortar of claim 2, wherein the machine-made sand has a particle size of 0.15 to 4.75mm and the fineness modulus of the iron tailings sand is 1.5 to 2.1.
4. The dry-mixed mortar of claim 3, wherein the weight ratio of the machine sand to the iron tailings sand is 9: 1.
5. The dry-mixed mortar of claim 4, wherein the weight ratio of the cement to the fine aggregate to the water is 1 (2.4-3.5) to (0.4-0.6).
6. A dry-mixed mortar as claimed in claim 1, characterised in that the cement is selected from the group consisting of p.o42.5 cement.
7. The dry-mixed mortar of claim 1, wherein the hydroxypropyl methylcellulose is used in an amount of 0.3 to 0.5 parts.
8. The processing method of the dry-mixed mortar is characterized by comprising the following steps of: the dry-mixed mortar is prepared by weighing the raw materials according to the formula ratio in any one of claims 1 to 7, and then mixing and stirring the cement, the machine-made sand, the iron tailing sand, the hydroxypropyl methyl cellulose and the water uniformly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110980926.1A CN113563032A (en) | 2021-08-25 | 2021-08-25 | Dry-mixed mortar and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110980926.1A CN113563032A (en) | 2021-08-25 | 2021-08-25 | Dry-mixed mortar and processing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113563032A true CN113563032A (en) | 2021-10-29 |
Family
ID=78172716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110980926.1A Pending CN113563032A (en) | 2021-08-25 | 2021-08-25 | Dry-mixed mortar and processing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113563032A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115594474A (en) * | 2022-09-28 | 2023-01-13 | 北科蕴宏环保科技(北京)有限公司（Cn） | Full-solid-waste dry-mixed mortar and preparation method thereof |
| CN115898022A (en) * | 2022-11-22 | 2023-04-04 | 中筑信云发展有限公司 | Machine spraying construction method suitable for preparing dry-mixed mortar product from tailing sand |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110023756A1 (en) * | 2006-02-15 | 2011-02-03 | Lafarge Canada Inc. | Binder for mine tailings, alluvial sand and the like |
| CN104743975A (en) * | 2015-03-09 | 2015-07-01 | 中国十七冶集团有限公司 | Iron tailing super-fine sand concrete |
| CN107352894A (en) * | 2017-06-29 | 2017-11-17 | 中国十七冶集团有限公司 | A kind of iron tailings sand dry-mixed masonry mortar |
| CN110117173A (en) * | 2019-04-30 | 2019-08-13 | 中建材中岩科技有限公司 | A kind of mixed sand wet mixing mortar and preparation method thereof |
-
2021
- 2021-08-25 CN CN202110980926.1A patent/CN113563032A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110023756A1 (en) * | 2006-02-15 | 2011-02-03 | Lafarge Canada Inc. | Binder for mine tailings, alluvial sand and the like |
| CN104743975A (en) * | 2015-03-09 | 2015-07-01 | 中国十七冶集团有限公司 | Iron tailing super-fine sand concrete |
| CN107352894A (en) * | 2017-06-29 | 2017-11-17 | 中国十七冶集团有限公司 | A kind of iron tailings sand dry-mixed masonry mortar |
| CN110117173A (en) * | 2019-04-30 | 2019-08-13 | 中建材中岩科技有限公司 | A kind of mixed sand wet mixing mortar and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 梁乃兴: "《聚合物改性水泥混凝土》", 31 December 1995, 人民交通出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115594474A (en) * | 2022-09-28 | 2023-01-13 | 北科蕴宏环保科技(北京)有限公司（Cn） | Full-solid-waste dry-mixed mortar and preparation method thereof |
| CN115594474B (en) * | 2022-09-28 | 2023-08-11 | 北科蕴宏环保科技(北京)有限公司 | Full-solid waste dry-mixed mortar and preparation method thereof |
| CN115898022A (en) * | 2022-11-22 | 2023-04-04 | 中筑信云发展有限公司 | Machine spraying construction method suitable for preparing dry-mixed mortar product from tailing sand |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Felekoglu | Utilisation of high volumes of limestone quarry wastes in concrete industry (self-compacting concrete case) | |
| Dehwah | Mechanical properties of self-compacting concrete incorporating quarry dust powder, silica fume or fly ash | |
| CN109437718B (en) | C40-grade high-mixing-amount solid waste concrete and preparation method thereof | |
| CN109293317A (en) | High-strength self-compacting concrete and preparation method thereof | |
| CN113563032A (en) | Dry-mixed mortar and processing method thereof | |
| CN107098642B (en) | High-strength self-compacting concrete | |
| CN107651899B (en) | Grading method of machine-made sand for dry-mixed mortar and prepared dry-mixed mortar | |
| AU2011317284B2 (en) | Clay-bearing manufactured sands for hydratable cementitious compositions | |
| CN112266211B (en) | Early-strength low-shrinkage concrete containing waste stone powder and preparation method thereof | |
| CN112500005B (en) | Method for preparing porous light fine aggregate and micro powder from manganese-silicon slag and application | |
| CN111646753A (en) | Preparation method of C80 machine-made sand concrete | |
| CN106517939A (en) | C50-grade granite-based composite micro powder concrete, and preparation method thereof | |
| CN110937863A (en) | Recyclable cement concrete and preparation method thereof | |
| CN113173758B (en) | Self-compacting concrete and preparation method thereof | |
| CN113321457B (en) | Method for preparing ultra-high performance concrete by doping oyster shell powder and metakaolin | |
| CN112694301B (en) | Long-acting reduction type dolomite powder self-compacting concrete and preparation method thereof | |
| Felekoglu et al. | A comparative study on the use of mineral and chemical types of viscosity enhancers in self-compacting concrete | |
| CN114292064A (en) | Semi-rigid base course of cement stabilized iron tailing road surface | |
| CN112919862A (en) | Large-volume concrete and preparation method thereof | |
| CN106278025A (en) | A kind of strong concrete and preparation method thereof | |
| CN105776921A (en) | High-quality aggregate for cement concrete and preparation method of high-quality aggregate | |
| CN115784680B (en) | Machine-made sand concrete with high strength and high rheological property and preparation method thereof | |
| CN116621552B (en) | Low-concentration slurry regulator and preparation method thereof | |
| CN114195412B (en) | Regenerated micro-powder cement and preparation method thereof | |
| CN111423177A (en) | Dry-mixed mortar and production process thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211029 |