CN116425470A - High-performance wet-mixed plastering mortar and preparation process thereof - Google Patents
High-performance wet-mixed plastering mortar and preparation process thereof Download PDFInfo
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- CN116425470A CN116425470A CN202310185351.3A CN202310185351A CN116425470A CN 116425470 A CN116425470 A CN 116425470A CN 202310185351 A CN202310185351 A CN 202310185351A CN 116425470 A CN116425470 A CN 116425470A
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 81
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000003607 modifier Substances 0.000 claims abstract description 36
- 239000010865 sewage Substances 0.000 claims abstract description 33
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- 238000002156 mixing Methods 0.000 claims abstract description 29
- 230000014759 maintenance of location Effects 0.000 claims abstract description 27
- 239000004033 plastic Substances 0.000 claims abstract description 27
- 229920003023 plastic Polymers 0.000 claims abstract description 27
- 229920000642 polymer Polymers 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 239000004576 sand Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000004568 cement Substances 0.000 claims abstract description 22
- 239000010881 fly ash Substances 0.000 claims abstract description 21
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 20
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000011575 calcium Substances 0.000 claims abstract description 19
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 19
- 239000000701 coagulant Substances 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 29
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 24
- 229930006000 Sucrose Natural products 0.000 claims description 24
- 150000001875 compounds Chemical class 0.000 claims description 24
- 229920000126 latex Polymers 0.000 claims description 22
- 239000004816 latex Substances 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 14
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 12
- YLGXILFCIXHCMC-JHGZEJCSSA-N methyl cellulose Chemical compound COC1C(OC)C(OC)C(COC)O[C@H]1O[C@H]1C(OC)C(OC)C(OC)OC1COC YLGXILFCIXHCMC-JHGZEJCSSA-N 0.000 claims description 12
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 12
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 12
- 239000005720 sucrose Substances 0.000 claims description 12
- 239000005062 Polybutadiene Substances 0.000 claims description 6
- 239000002174 Styrene-butadiene Substances 0.000 claims description 6
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 6
- 229920002857 polybutadiene Polymers 0.000 claims description 6
- 239000011115 styrene butadiene Substances 0.000 claims description 6
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 239000004793 Polystyrene Substances 0.000 claims description 5
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 5
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 5
- 229920002223 polystyrene Polymers 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 239000004566 building material Substances 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 8
- 229920001971 elastomer Polymers 0.000 description 8
- 239000005060 rubber Substances 0.000 description 8
- -1 acrylic ester Chemical class 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011404 masonry cement Substances 0.000 description 1
- 238000003823 mortar mixing Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation 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
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
-
- 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
Abstract
The invention provides high-performance wet-mixing plastering mortar and a preparation process thereof, and relates to the technical field of building material mortar. The high-performance wet-mixed plastering mortar comprises the following raw materials in parts by weight: 240-260 parts of cement, 65-75 parts of fly ash, 25-35 parts of calcium powder, 1285-1510 parts of fine aggregate, 250-270 parts of high-concentration sewage, 18-26 parts of polymer modifier, 3-5 parts of plastic retention agent, 10-14 parts of water reducer and 1-3 parts of coagulant. According to the invention, the high-concentration sewage recovered from the production of premixed mortar is used as a raw material and is matched with other raw materials for use, the fine aggregate is composed of fine sand and middle sand, so that the cost of the fine aggregate is lower than that of natural sand, the bonding strength of the fine aggregate and cementing materials such as cement, fly ash and the like is higher, and the problems of poor grading characteristics and particle defects of machine-made sand can be solved by compounding the fine sand and the middle sand.
Description
Technical Field
The invention relates to the technical field of building material mortar, in particular to high-performance wet-mixing plastering mortar and a preparation process thereof.
Background
The wet-mixed mortar is a mortar mixture which is prepared from cement, fine aggregate, additive, water and various components determined according to the performance according to a certain proportion, is transported to a using place by a stirring transport vehicle after being metered and stirred at a stirring station, is put into a special container for storage, and is used within a specified time. The preparation principle of the wet-mixed mortar is similar to that of commercial concrete, and commercial concrete mixing stations can simultaneously produce the wet-mixed mortar.
Because the production and mixing sites and the construction and use sites of the wet-mixed plastering mortar are not in the same position, the wet-mixed mortar is required to have good volume stability, longer setting time and maintain good consistency. Meanwhile, in order to overcome the quality problems of easy cracking, hollowing, peeling and the like of plastering mortar in actual use, wet-mixing plastering mortar is required to improve the impermeability and strength and reduce shrinkage cracking on the premise of keeping good workability.
In actual production, in order to improve the uniformity of mortar mixing, reduce the dust of the construction site and improve the construction environment, the mortar is uniformly mixed in advance and then transported to the construction site for use. The wet-mixed mortar is stirred by adding water, so that the wet-mixed mortar is required to be used in a specified time, but the wet-mixed mortar is easily influenced by environment and weather in the transportation and storage processes, so that the water retention and stability of the existing wet-mixed mortar are influenced, the existing wet-mixed mortar is easy to generate sedimentation phenomenon, and the construction is further influenced.
Accordingly, a high-performance wet-mixed plastering mortar and a preparation process thereof are provided by those skilled in the art to solve the problems set forth in the background art.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides high-performance wet-mixed plastering mortar and a preparation process thereof, and solves the problems that the wet-mixed mortar is easily influenced by environment and weather in the transportation and storage processes, so that the water retention and stability of the existing wet-mixed mortar are influenced, the existing wet-mixed plastering mortar is easily subjected to sedimentation phenomenon, and the construction is further influenced.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the high-performance wet-mixed plastering mortar comprises the following raw materials in parts by weight: 240-260 parts of cement, 65-75 parts of fly ash, 25-35 parts of calcium powder, 1285-1510 parts of fine aggregate, 250-270 parts of high-concentration sewage, 18-26 parts of polymer modifier, 3-5 parts of plastic retention agent, 10-14 parts of water reducer and 1-3 parts of coagulant.
Preferably, the composition comprises the following raw materials in parts by weight: 240 parts of cement, 65 parts of fly ash, 25 parts of calcium powder, 1285 parts of fine aggregate, 250 parts of high-concentration sewage, 18 parts of polymer modifier, 3 parts of plastic retention agent, 10 parts of water reducer and 1 part of setting modifier.
Preferably, the composition comprises the following raw materials in parts by weight: 250 parts of cement, 70 parts of fly ash, 30 parts of calcium powder, 1400 parts of fine aggregate, 260 parts of high-concentration sewage, 22 parts of polymer modifier, 4 parts of plastic retention agent, 12 parts of water reducer and 2 parts of setting modifier.
Preferably, the composition comprises the following raw materials in parts by weight: 260 parts of cement, 75 parts of fly ash, 35 parts of calcium powder, 1510 parts of fine aggregate, 270 parts of high-concentration sewage, 26 parts of polymer modifier, 5 parts of plastic retention agent, 14 parts of water reducer and 3 parts of setting modifier.
Preferably, the fine aggregate is composed of at least one of fine sand and medium sand, and the high-concentration sewage is recycled high-concentration sewage in premixed mortar production.
Preferably, the polymer modifier comprises at least one of polybutadiene grafted polystyrene glycidyl methacrylate latex, acrylate emulsion, redispersible latex powder, styrene-butadiene latex and neoprene latex.
Preferably, the plastic retention agent is a compound mixture of methyl cellulose ether, sodium dodecyl benzene sulfonate and hotplate rubber, the compound proportion of the methyl cellulose ether, the sodium dodecyl benzene sulfonate and the hotplate rubber is 3:2:4, the coagulant is a compound mixture of white sugar, sucrose and sodium tripolyphosphate, and the compound proportion of the white sugar, the sucrose and the sodium tripolyphosphate is 2:2:1.
Preferably, the preparation process of the high-performance wet-mixed plastering mortar comprises the following steps of:
s1, weighing raw material components in parts by weight, mixing and stirring 240-260 parts of cement, 65-75 parts of fly ash, 25-35 parts of calcium powder, 1285-1510 parts of fine aggregate and 250-270 parts of high-concentration sewage for 20-40 s to obtain a mixture;
s2, adding 18-26 parts of polymer modifier, 3-5 parts of plastic retention agent, 10-14 parts of water reducer and 1-3 parts of coagulant into the mixture, and continuously mixing and stirring for 100-120 s to obtain the high-performance wet-mixing plastering mortar.
(III) beneficial effects
The invention provides high-performance wet-mixed plastering mortar and a preparation process thereof. The beneficial effects are as follows:
1. according to the high-performance wet-mixing plastering mortar and the preparation process thereof, the high-concentration sewage recycled from the production of the ready-mixed mortar is used as a raw material and is matched with other raw materials for use, the fine aggregate is composed of fine sand and middle sand, so that the cost of the fine aggregate is lower than that of natural sand, the bonding strength of the fine aggregate and cementing materials such as cement and fly ash is higher, and the problems of poor grading characteristics and particle defects of machine-made sand can be solved through compounding of the fine sand and the middle sand.
2. According to the high-performance wet-mixing plastering mortar and the preparation process thereof, the plastic retention agent and the setting agent are matched with other raw materials, so that the wet-mixing plastering mortar can keep the original performance for a long time, has good water retention property and stability, can be operated for 30 hours, has longer service life, can adjust the setting time of the mortar by adjusting the proportion of the setting agent in a formula, thereby increasing the construction flexibility of the plastering mortar according to the site construction requirement, and can keep good plasticity all the time by the effect of the plastic retention agent before reaching the setting time, thereby prolonging the opening time.
3. According to the high-performance wet-mixing plastering mortar and the preparation process thereof, the polymer modifier is added into the mortar, so that the drying shrinkage, the impermeability and the physical and mechanical properties of the mortar are improved effectively, the wet-mixing plastering mortar with good working performance is obtained by matching with cement, fine aggregate and additives, the polymer modifier adopts polybutadiene grafted polystyrene-glycidyl methacrylate latex, styrene-butadiene latex and acrylate emulsion to match with the mortar, and the mortar has good modification effect, so that the mortar has good protection effect and ageing resistance during use, and is not easy to cause empty drums and cracking.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
the embodiment of the invention provides high-performance wet-mixed plastering mortar which comprises the following raw materials in parts by weight: 240 parts of cement, 65 parts of fly ash, 25 parts of calcium powder, 1285 parts of fine aggregate, 250 parts of high-concentration sewage, 18 parts of polymer modifier, 3 parts of plastic retention agent, 10 parts of water reducer and 1 part of setting modifier.
The fine aggregate consists of at least one of fine sand and medium sand, the high-concentration sewage is recycled high-concentration sewage produced by premixed mortar, the polymer modifier comprises at least one of polybutadiene grafted polystyrene glycidyl methacrylate latex, acrylic ester emulsion, redispersible latex powder, styrene-butadiene latex and neoprene latex, the plastic retention agent is a compound mixture of methyl cellulose ether, sodium dodecyl benzene sulfonate and hotplate rubber, the compound ratio of the methyl cellulose ether, sodium dodecyl benzene sulfonate and the hotplate rubber is 3:2:4, the coagulant is a compound mixture of white sugar, sucrose and sodium tripolyphosphate, and the compound ratio of the white sugar, sucrose and sodium tripolyphosphate is 2:2:1.
A preparation process of high-performance wet-mixed plastering mortar comprises the following steps:
s1, weighing raw material components in parts by weight, mixing and stirring 240 parts of cement, 65 parts of fly ash, 25 parts of calcium powder, 1285 parts of fine aggregate and 250 parts of high-concentration sewage for 20s to obtain a mixture;
s2, adding 18 parts of polymer modifier, 3 parts of plastic retention agent, 10 parts of water reducer and 1 part of coagulant into the mixture, and continuously mixing and stirring for 100 seconds to obtain the high-performance wet-mixing plastering mortar.
Example 2:
the embodiment of the invention provides high-performance wet-mixed plastering mortar which comprises the following raw materials in parts by weight: 250 parts of cement, 70 parts of fly ash, 30 parts of calcium powder, 1400 parts of fine aggregate, 260 parts of high-concentration sewage, 22 parts of polymer modifier, 4 parts of plastic retention agent, 12 parts of water reducer and 2 parts of setting modifier.
The fine aggregate consists of at least one of fine sand and medium sand, the high-concentration sewage is recycled high-concentration sewage produced by premixed mortar, the polymer modifier comprises at least one of polybutadiene grafted polystyrene glycidyl methacrylate latex, acrylic ester emulsion, redispersible latex powder, styrene-butadiene latex and neoprene latex, the plastic retention agent is a compound mixture of methyl cellulose ether, sodium dodecyl benzene sulfonate and hotplate rubber, the compound ratio of the methyl cellulose ether, sodium dodecyl benzene sulfonate and the hotplate rubber is 3:2:4, the coagulant is a compound mixture of white sugar, sucrose and sodium tripolyphosphate, and the compound ratio of the white sugar, sucrose and sodium tripolyphosphate is 2:2:1.
A preparation process of high-performance wet-mixed plastering mortar comprises the following steps:
s1, weighing raw material components in parts by weight, mixing and stirring 250 parts of cement, 70 parts of fly ash, 30 parts of calcium powder, 1400 parts of fine aggregate and 260 parts of high-concentration sewage for 30s to obtain a mixture;
s2, adding 22 parts of polymer modifier, 4 parts of plastic retention agent, 12 parts of water reducer and 2 parts of coagulant into the mixture, and continuously mixing and stirring for 110 seconds to obtain the high-performance wet-mixing plastering mortar.
Example 3:
the embodiment of the invention provides high-performance wet-mixed plastering mortar which comprises the following raw materials in parts by weight: 260 parts of cement, 75 parts of fly ash, 35 parts of calcium powder, 1510 parts of fine aggregate, 270 parts of high-concentration sewage, 26 parts of polymer modifier, 5 parts of plastic retention agent, 14 parts of water reducer and 3 parts of setting modifier.
The fine aggregate consists of at least one of fine sand and medium sand, the high-concentration sewage is recycled high-concentration sewage produced by premixed mortar, the polymer modifier comprises at least one of polybutadiene grafted polystyrene glycidyl methacrylate latex, acrylic ester emulsion, redispersible latex powder, styrene-butadiene latex and neoprene latex, the plastic retention agent is a compound mixture of methyl cellulose ether, sodium dodecyl benzene sulfonate and hotplate rubber, the compound ratio of the methyl cellulose ether, sodium dodecyl benzene sulfonate and the hotplate rubber is 3:2:4, the coagulant is a compound mixture of white sugar, sucrose and sodium tripolyphosphate, and the compound ratio of the white sugar, sucrose and sodium tripolyphosphate is 2:2:1.
A preparation process of high-performance wet-mixed plastering mortar comprises the following steps:
s1, weighing raw material components in parts by weight, mixing and stirring 260 parts of water, 75 parts of fly ash, 35 parts of calcium powder, 1510 parts of fine aggregate and 270 parts of high-concentration sewage for 40s to obtain a mixture;
s2, adding 26 parts of polymer modifier, 5 parts of plastic retention agent, 14 parts of water reducer and 3 parts of coagulant into the mixture, and continuously mixing and stirring for 120 seconds to obtain the high-performance wet-mixing plastering mortar.
Comparative example 1:
the embodiment of the invention provides high-performance wet-mixed plastering mortar which comprises the following raw materials in parts by weight: 260 parts of cement, 75 parts of fly ash, 35 parts of calcium powder, 1510 parts of fine aggregate, 270 parts of high-concentration sewage, 5 parts of plastic retention agent, 14 parts of water reducer and 3 parts of setting modifier.
The fine aggregate consists of at least one of fine sand and medium sand, the high-concentration sewage is recycled high-concentration sewage produced by premixed mortar, the plastic retention agent is a compound mixture of methyl cellulose ether, sodium dodecyl benzene sulfonate and temperature wheel glue, the compound ratio of the methyl cellulose ether, the sodium dodecyl benzene sulfonate and the temperature wheel glue is 3:2:4, the coagulant is a compound mixture of white sugar, sucrose and sodium tripolyphosphate, and the compound ratio of the white sugar, the sucrose and the sodium tripolyphosphate is 2:2:1.
A preparation process of high-performance wet-mixed plastering mortar comprises the following steps:
s1, weighing raw material components in parts by weight, mixing and stirring 260 parts of water, 75 parts of fly ash, 35 parts of calcium powder, 1510 parts of fine aggregate and 270 parts of high-concentration sewage for 40s to obtain a mixture;
s2, adding 5 parts of plastic retention agent, 14 parts of water reducer and 3 parts of coagulant into the mixture, and continuously mixing and stirring for 120 seconds to obtain the high-performance wet-mixing plastering mortar.
Wet-mixing plastering mortar performance detection
Detecting the water retention rate, the consistency and the setting time of mortar according to a test method in JG/T230-2007 premixed mortar;
detecting the strength of cement mortar 28d according to the specification in GB3183-2003 masonry cement;
the 14d tensile bond strength of mortar was measured by the 8-letter method of Xiaojian et al, and the measurement results are shown in table 1 below:
TABLE 1 results of Performance measurements for examples 1-3
Analysis of results:
it can be seen from table 1 that the water retention rate in examples 1 to 3 can reach more than 89%, while the water retention rate in comparative example 1 is less than 89%, which means that the addition of the polymer modifier can effectively improve the water retention rate of the mortar, and the proportion among cement, fine aggregate, polymer modifier, plasticizer, water reducer and setting agent will affect the comprehensive performance of the mortar, and can also improve the cohesiveness of the mortar, with better water retention, the addition of the cohesive component can improve the cohesive strength of the mortar, improve the cohesive force between the mortar and the base layer, and thus reduce the possibility of falling off of the mortar.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The high-performance wet-mixed plastering mortar is characterized by comprising the following raw materials in parts by weight: 240-260 parts of cement, 65-75 parts of fly ash, 25-35 parts of calcium powder, 1285-1510 parts of fine aggregate, 250-270 parts of high-concentration sewage, 18-26 parts of polymer modifier, 3-5 parts of plastic retention agent, 10-14 parts of water reducer and 1-3 parts of coagulant.
2. The high-performance wet-mixed plastering mortar according to claim 1, comprising the following raw materials in parts by weight: 240 parts of cement, 65 parts of fly ash, 25 parts of calcium powder, 1285 parts of fine aggregate, 250 parts of high-concentration sewage, 18 parts of polymer modifier, 3 parts of plastic retention agent, 10 parts of water reducer and 1 part of setting modifier.
3. The high-performance wet-mixed plastering mortar according to claim 1, comprising the following raw materials in parts by weight: 250 parts of cement, 70 parts of fly ash, 30 parts of calcium powder, 1400 parts of fine aggregate, 260 parts of high-concentration sewage, 22 parts of polymer modifier, 4 parts of plastic retention agent, 12 parts of water reducer and 2 parts of setting modifier.
4. The high-performance wet-mixed plastering mortar according to claim 1, comprising the following raw materials in parts by weight: 260 parts of cement, 75 parts of fly ash, 35 parts of calcium powder, 1510 parts of fine aggregate, 270 parts of high-concentration sewage, 26 parts of polymer modifier, 5 parts of plastic retention agent, 14 parts of water reducer and 3 parts of setting modifier.
5. The high-performance wet-mixed plastering mortar according to claim 1, wherein the fine aggregate is composed of at least one of fine sand and medium sand, and the high-concentration sewage is high-concentration sewage recovered from the production of ready-mixed mortar.
6. The high performance wet-mix plastering mortar according to claim 1, wherein the polymer modifier comprises at least one of polybutadiene grafted polystyrene glycidyl methacrylate latex, acrylate emulsion, redispersible latex powder, styrene-butadiene latex and neoprene latex.
7. The high-performance wet-mixed plastering mortar according to claim 1, wherein the plastic retention agent is a compound mixture of methyl cellulose ether, sodium dodecyl benzene sulfonate and hotplate glue, the compound ratio of the methyl cellulose ether, the sodium dodecyl benzene sulfonate and the hotplate glue is 3:2:4, the coagulant is a compound mixture of white sugar, sucrose and sodium tripolyphosphate, and the compound ratio of the white sugar, the sucrose and the sodium tripolyphosphate is 2:2:1.
8. The preparation process of the high-performance wet-mixed plastering mortar is characterized by comprising the following steps of:
s1, weighing raw material components in parts by weight, mixing and stirring 240-260 parts of cement, 65-75 parts of fly ash, 25-35 parts of calcium powder, 1285-1510 parts of fine aggregate and 250-270 parts of high-concentration sewage for 20-40 s to obtain a mixture;
s2, adding 18-26 parts of polymer modifier, 3-5 parts of plastic retention agent, 10-14 parts of water reducer and 1-3 parts of coagulant into the mixture, and continuously mixing and stirring for 100-120 s to obtain the high-performance wet-mixing plastering mortar.
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| CN202310185351.3A CN116425470A (en) | 2023-03-01 | 2023-03-01 | High-performance wet-mixed plastering mortar and preparation process thereof |
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| CN202310185351.3A CN116425470A (en) | 2023-03-01 | 2023-03-01 | High-performance wet-mixed plastering mortar and preparation process thereof |
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| CN202310185351.3A Pending CN116425470A (en) | 2023-03-01 | 2023-03-01 | High-performance wet-mixed plastering mortar and preparation process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117534380A (en) * | 2023-11-15 | 2024-02-09 | 万特福建筑构件有限公司 | Wet-mixed mortar and preparation method thereof |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117534380A (en) * | 2023-11-15 | 2024-02-09 | 万特福建筑构件有限公司 | Wet-mixed mortar and preparation method thereof |
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