CN115010426A - Oil-resistant cement mortar and preparation method thereof - Google Patents
Oil-resistant cement mortar and preparation method thereof Download PDFInfo
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- CN115010426A CN115010426A CN202210566907.9A CN202210566907A CN115010426A CN 115010426 A CN115010426 A CN 115010426A CN 202210566907 A CN202210566907 A CN 202210566907A CN 115010426 A CN115010426 A CN 115010426A
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- parts
- oil
- cement mortar
- fiber
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/203—Oil-proof or grease-repellant materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- 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 relates to oil-resistant cement mortar which comprises the following raw materials in parts by weight: 50-70 parts of Portland cement, 25-45 parts of yellow sand, 30-40 parts of mineral powder, 2-5 parts of an early strength agent, 6-12 parts of an air entraining agent, 2-6 parts of a water reducing agent, 12-22 parts of fly ash and 0.5-1.5 parts of an impermeable fiber, wherein the early strength agent can be one of sodium sulfate, nitrite and thiocyanate, and the impermeable fiber can be one of basalt fiber and polypropylene fiber. According to the oil-resistant cement mortar and the preparation method thereof, mineral powder is doped in the mixing of the cement mortar, so that the mineral powder can be filled in gaps of cement particles to form the closest packing, a compact structure is formed, the oil-permeation resistance and the concrete strength are improved, the cement mortar does not react with vegetable oil, animal oil and mineral oil, the permeation of various grease to a concrete base surface is effectively resisted, the influence of the oil on the strength of a concrete member is avoided, the construction is simple, and the oil can be stirred only by adding clear water in a proper proportion.
Description
Technical Field
The invention relates to the technical field of cement mortar, in particular to oil-resistant cement mortar and a preparation method thereof.
Background
The cement mortar is prepared from cement, fine aggregate and water according to needs, and the cement mixed mortar is prepared from cement, fine aggregate, lime and water, and the cement mortar and the cement mixed mortar have different concepts, different calling methods and different purposes.
When the conventional common cement mortar is applied to oil filling engineering for storing oil and oil-resistant terrace engineering, the oil-resistant cement mortar and the preparation method thereof are provided because the oil density is low, the viscosity is low, the permeability is strong, the adhesion between cement and aggregate is easy to break, and the strength of concrete is further reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the oil-resistant cement mortar and the preparation method thereof, which have the advantages of improving the oil seepage resistance of the cement mortar and the strength of concrete, and the like, and solve the problem that the strength of concrete is reduced because the bonding between cement and aggregate is easily broken due to small oil density, low viscosity and strong seepage capability when the conventional common cement mortar is applied to oil filling engineering for storing oil and oil-resistant terrace engineering.
In order to achieve the purpose, the invention provides the following technical scheme: oil-resistant cement mortar comprises the following raw materials in parts by weight: 50-70 parts of Portland cement, 25-45 parts of yellow sand, 30-40 parts of mineral powder, 2-5 parts of early strength agent, 6-12 parts of air entraining agent, 2-6 parts of water reducing agent, 12-22 parts of fly ash and 0.5-1.5 parts of impermeable fiber.
Further, the early strength agent can be one of sodium sulfate, nitrite and thiocyanate, and the seepage-proofing fiber can be one of basalt fiber and polypropylene fiber.
The preparation method of the oil-resistant cement mortar comprises the following steps:
s1, heating and melting 0.5-1.5 parts of the anti-seepage fiber, keeping the heating temperature at 180-220 ℃ for 50 minutes to obtain a melt A, cooling the melt A at-12 ℃ to-8 ℃ for 1.5 hours, drying, grinding and screening after cooling to obtain a powder B for later use;
s2, weighing a certain amount of natural ore, grinding and screening to obtain mineral powder with the particle size range of 0.1-0.15mm, and weighing 30-40 parts of mineral powder for later use;
s3, putting 50-70 parts of portland cement, 25-45 parts of yellow sand, 12-22 parts of fly ash and 30-40 parts of mineral powder into a specified mixing device, injecting a certain amount of purified water, stirring for 30 minutes at 150 revolutions per minute, adding the powder B in the stirring process, continuing stirring for 20 minutes, adding 2-5 parts of early strength agent, 6-12 parts of air entraining agent and 2-6 parts of water reducing agent, and fully stirring to obtain a mixture C;
s4, placing the mixture C into a specific vacuum drying oven, keeping the temperature at 40-60 ℃, fully drying, screening and packaging to obtain the final product.
Compared with the prior art, the technical scheme of the application has the following beneficial effects:
according to the oil-resistant cement mortar and the preparation method thereof, mineral powder, anti-seepage fibers, an early strength agent and fly ash are added into the cement mortar mixture, so that gaps among cement particles can be filled, the closest packing is formed, a compact structure is formed, the oil seepage resistance and the concrete strength are improved, the cement mortar does not react with vegetable oil, animal oil and mineral oil, the permeation of various oils to the concrete base surface is effectively resisted, the influence of the oil on the strength of a concrete member is avoided, the construction is simple, and the cement mortar can be stirred only by adding a proper proportion of clear water.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
The first embodiment of the invention relates to oil-resistant cement mortar which comprises the following raw materials in parts by weight: 50 parts of Portland cement, 25 parts of yellow sand, 30 parts of mineral powder, 2 parts of an early strength agent, 6 parts of an air entraining agent, 2 parts of a water reducing agent, 12 parts of fly ash and 0.5 part of impermeable fiber.
The early strength agent can be one of sodium sulfate, nitrite and thiocyanate, and the seepage-proofing fiber can be one of basalt fiber and polypropylene fiber.
The preparation method of the oil-resistant cement mortar comprises the following steps:
s1, heating and melting 0.5 part of the anti-seepage fiber, keeping the heating temperature at 180-220 ℃ for 50 minutes to obtain a melt A, cooling the melt A at-12 to-8 ℃ for 1.5 hours, and drying, grinding and screening after cooling to obtain a powder B for later use;
s2, weighing a certain amount of natural ore, grinding and screening to obtain mineral powder with the particle size range of 0.1-0.15mm, and weighing 30 parts of mineral powder for later use;
s3, putting 50 parts of portland cement, 25 parts of yellow sand, 12 parts of fly ash and 30 parts of mineral powder into a specified mixing device, injecting a certain amount of purified water, stirring for 30 minutes at 150 revolutions per minute, adding the powder B during stirring, continuing stirring for 20 minutes, adding 2 parts of early strength agent, 6 parts of air entraining agent and 2 parts of water reducing agent, and fully stirring to obtain a mixture C;
s4, placing the mixture C into a specific vacuum drying oven, keeping the temperature at 40-60 ℃, fully drying, screening and packaging to obtain the final product.
The second embodiment is oil-resistant cement mortar which comprises the following raw materials in parts by weight: 60 parts of portland cement, 30 parts of yellow sand, 35 parts of mineral powder, 3.5 parts of an early strength agent, 8.5 parts of an air entraining agent, 4 parts of a water reducing agent, 18 parts of fly ash and 1 part of impermeable fiber.
The early strength agent can be one of sodium sulfate, nitrite and thiocyanate, and the seepage-proofing fiber can be one of basalt fiber and polypropylene fiber.
The preparation method of the oil-resistant cement mortar comprises the following steps:
s1, heating and melting 1 part of the impervious fiber, keeping the heating temperature at 180-220 ℃ for 50 minutes to obtain a melt A, cooling the melt A at-12 to-8 ℃ for 1.5 hours, drying, grinding and screening after cooling to obtain a powder B for later use;
s2, weighing a certain amount of natural ore, grinding and screening to obtain mineral powder with the particle size range of 0.1-0.15mm, and weighing 35 parts of mineral powder for later use;
s3, putting 60 parts of portland cement, 30 parts of yellow sand, 18 parts of fly ash and 35 parts of mineral powder into a specified mixing device, injecting a certain amount of purified water, stirring for 30 minutes at 150 revolutions per minute, adding the powder B during stirring, continuing stirring for 20 minutes, adding 3.5 parts of early strength agent, 8.5 parts of air entraining agent and 4 parts of water reducing agent, and fully stirring to obtain a mixture C;
s4, placing the mixture C into a specific vacuum drying oven, keeping the temperature at 40-60 ℃, fully drying, screening and packaging to obtain the final product.
In the third embodiment, the oil-resistant cement mortar comprises the following raw materials in parts by weight: 70 parts of Portland cement, 45 parts of yellow sand, 40 parts of mineral powder, 5 parts of an early strength agent, 12 parts of an air entraining agent, 6 parts of a water reducing agent, 22 parts of fly ash and 1.5 parts of impermeable fiber.
The early strength agent can be one of sodium sulfate, nitrite and thiocyanate, and the seepage-proofing fiber can be one of basalt fiber and polypropylene fiber.
The preparation method of the oil-resistant cement mortar comprises the following steps:
s1, heating and melting 1.5 parts of the anti-seepage fiber, keeping the heating temperature at 180-220 ℃ for 50 minutes to obtain a melt A, cooling the melt A at-12 to-8 ℃ for 1.5 hours, and drying, grinding and screening after cooling to obtain a powder B for later use;
s2, weighing a certain amount of natural ore, grinding and screening to obtain mineral powder with the particle size range of 0.1-0.15mm, and weighing 40 parts of mineral powder for later use;
s3, putting 70 parts of Portland cement, 45 parts of yellow sand, 22 parts of fly ash and 40 parts of mineral powder into a specified mixing device, injecting a certain amount of purified water, stirring for 30 minutes at 150 revolutions per minute, adding the powder B in the stirring process, continuously stirring for 20 minutes, adding 5 parts of early strength agent, 12 parts of air entraining agent and 6 parts of water reducing agent, and fully stirring to obtain a mixture C;
s4, placing the mixture C into a specific vacuum drying oven, keeping the temperature at 40-60 ℃, fully drying, screening and packaging to obtain the final product.
The admixture can shorten the concrete setting time and improve the early strength by using the early strength agent, is used for accelerating the cement hydration and improving the early strength of mortar, generates a large amount of tiny and uniform bubbles in a concrete mixture after being doped with an air entraining agent, ensures that the evaporation route of free water in the concrete mixture becomes tortuous, tiny and dispersed due to the obstruction of the bubbles, thereby changing the quantity and the characteristics of capillary tubes, reducing the water seepage passage of the concrete and further effectively improving the impermeability of the concrete, forms a layer of stable water film on the surface of cement particles due to the dispersion action of a water reducing agent after being doped with the water reducing agent, obviously increases the workability of the concrete by virtue of the lubricating action of water, reduces the dosage of mixing water after being doped with the water reducing agent under the condition of meeting certain construction workability, thereby reducing the quantity of free water of the concrete and reducing the pore volume of the capillary left after water evaporation, the compactness of the concrete is further improved, the air entraining agent and the active ingredients of the fly ash can be combined with calcium hydroxide precipitated during the hydration of the portland cement to generate stable calcium silicate hydrate, the hydrate not only contributes to the increase of the later strength of the concrete, but also ensures that the structure of the concrete is more compact due to the volume expansion of the hydrate in the reaction process, increases the water blocking effect, and further improves the impermeability of the concrete.
The invention has the beneficial effects that:
mineral powder, impermeable fibers, an early strength agent and fly ash are added into the mixture of cement mortar, so that the cement mortar can be filled in gaps of cement particles to form the closest packing, a compact structure is formed, the oil-seepage resistance and the concrete strength are improved, the cement mortar does not react with vegetable oil, animal oil and mineral oil, the permeation of various grease to the concrete base surface is effectively resisted, the influence of the oil on the strength of a concrete member is avoided, the construction is simple, and the cement mortar can be stirred only by adding clear water in a proper proportion.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The oil-resistant cement mortar is characterized by comprising the following raw materials in parts by weight: 50-70 parts of Portland cement, 25-45 parts of yellow sand, 30-40 parts of mineral powder, 2-5 parts of early strength agent, 6-12 parts of air entraining agent, 2-6 parts of water reducing agent, 12-22 parts of fly ash and 0.5-1.5 parts of impermeable fiber.
2. The oil resistant cement mortar of claim 1, characterized in that: the early strength agent can be one of sodium sulfate, nitrite and thiocyanate, and the impermeable fiber can be one of basalt fiber and polypropylene fiber.
3. The preparation method of the oil-resistant cement mortar is characterized by comprising the following steps:
s1, heating and melting 0.5-1.5 parts of the anti-seepage fiber, keeping the heating temperature at 220 ℃ below zero and keeping the temperature for 50 minutes to obtain a melt A, cooling the melt A at-12 ℃ to-8 ℃ for 1.5 hours, and drying, grinding and screening after cooling to obtain a powder B for later use;
s2, weighing a certain amount of natural ore, grinding and screening to obtain mineral powder with the particle size range of 0.1-0.15mm, and weighing 30-40 parts of mineral powder for later use;
s3, putting 50-70 parts of portland cement, 25-45 parts of yellow sand, 12-22 parts of fly ash and 30-40 parts of mineral powder into a specified mixing device, injecting a certain amount of purified water, stirring for 30 minutes at 150 revolutions per minute, adding the powder B in the stirring process, continuing stirring for 20 minutes, adding 2-5 parts of early strength agent, 6-12 parts of air entraining agent and 2-6 parts of water reducing agent, and fully stirring to obtain a mixture C;
s4, placing the mixture C into a specific vacuum drying oven, keeping the temperature at 40-60 ℃, fully drying, screening and packaging to obtain the final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210566907.9A CN115010426A (en) | 2022-05-24 | 2022-05-24 | Oil-resistant cement mortar and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210566907.9A CN115010426A (en) | 2022-05-24 | 2022-05-24 | Oil-resistant cement mortar and preparation method thereof |
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| CN115010426A true CN115010426A (en) | 2022-09-06 |
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| CN202210566907.9A Pending CN115010426A (en) | 2022-05-24 | 2022-05-24 | Oil-resistant cement mortar and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105481316A (en) * | 2015-12-24 | 2016-04-13 | 邢台建工商品混凝土有限公司 | Anti-oil-seepage mortar and preparation method thereof |
| CN105924050A (en) * | 2016-06-06 | 2016-09-07 | 北京中德新亚建筑技术有限公司 | Oil-proof mortar and preparation method thereof |
| CN113620645A (en) * | 2021-07-07 | 2021-11-09 | 海盐县秦山混凝土股份有限公司 | Temperature-resistant concrete and processing technology thereof |
-
2022
- 2022-05-24 CN CN202210566907.9A patent/CN115010426A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105481316A (en) * | 2015-12-24 | 2016-04-13 | 邢台建工商品混凝土有限公司 | Anti-oil-seepage mortar and preparation method thereof |
| CN105924050A (en) * | 2016-06-06 | 2016-09-07 | 北京中德新亚建筑技术有限公司 | Oil-proof mortar and preparation method thereof |
| CN113620645A (en) * | 2021-07-07 | 2021-11-09 | 海盐县秦山混凝土股份有限公司 | Temperature-resistant concrete and processing technology thereof |
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