CN113880531A - Preparation technology of special mortar for medium-sized concrete composite building blocks - Google Patents
Preparation technology of special mortar for medium-sized concrete composite building blocks Download PDFInfo
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- CN113880531A CN113880531A CN202111366317.3A CN202111366317A CN113880531A CN 113880531 A CN113880531 A CN 113880531A CN 202111366317 A CN202111366317 A CN 202111366317A CN 113880531 A CN113880531 A CN 113880531A
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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
Abstract
The invention relates to the technical field of concrete, and discloses a preparation technology of special mortar for medium-sized concrete composite building blocks, wherein light concrete comprises a material A and a material B; the material A comprises the following components in parts by weight: 37-43 parts of cement, 33-38 parts of quartz sand, 13-17 parts of water-washed river sand and 6-10 parts of fly ash; the B material comprises the following components in parts by weight: 1.5-1.9 parts of redispersible latex powder, 0.2-0.3 part of hydroxypropyl methyl cellulose, 0.05-0.15 part of starch ether, 0.1-0.2 part of pp fiber and 0.2-0.4 part of water reducing agent; and respectively and uniformly mixing the material A and the material B, and then mixing the materials together to obtain the lightweight concrete. The preparation process is simple and convenient to operate; the light concrete contains the redispersible latex powder, hydroxypropyl methylcellulose, starch ether and pp fiber, so that the light concrete has the advantages of improved strength, enhanced toughness and difficult cracking.
Description
Technical Field
The invention relates to the technical field of concrete, and discloses a preparation technology of special mortar for medium-sized concrete composite blocks.
Background
The building blocks are artificial blocks made of concrete, industrial waste and the like, have larger external dimensions than bricks, and have the advantages of simple equipment, high building speed and the like, and are divided into small-sized building blocks, medium-sized building blocks and large-sized building blocks according to different sizes and qualities. The concrete composite building block comprises a first light concrete layer, a net frame plate, a heat insulation plate and a second light concrete layer which are sequentially arranged, so that the light concrete is more important in the concrete composite building block.
The lightweight concrete in the prior art has complex production process and is easy to crack, so that the produced concrete composite building blocks have uneven quality and more unqualified products, and a new lightweight concrete is needed to meet the use requirement of the medium-sized concrete composite building blocks.
Disclosure of Invention
The invention aims to overcome the defects and provide a preparation technology of special mortar for medium-sized concrete composite blocks.
In order to achieve the purpose, the invention is implemented according to the following technical scheme:
a preparation technology of special mortar for medium-sized concrete composite building blocks comprises the following steps:
the lightweight concrete comprises a material A and a material B; the material A comprises the following components in parts by weight: 37-43 parts of cement, 33-38 parts of quartz sand, 13-17 parts of water-washed river sand and 6-10 parts of fly ash;
the material B comprises the following components in parts by weight: 1.5-1.9 parts of redispersible latex powder, 0.2-0.3 part of hydroxypropyl methyl cellulose, 0.05-0.15 part of starch ether, 0.1-0.2 part of pp fiber and 0.2-0.4 part of water reducing agent;
the preparation technology comprises the following steps:
s1, weighing the components of the material B according to the proportion, and uniformly stirring the components by using a mixing device to obtain a core master batch;
s2, weighing the components of the material A according to the proportion, uniformly stirring the components by using a mixing device, then adding the core master batch obtained in the step S1, and continuously uniformly stirring the components to obtain a mixture;
and S3, packaging the mixture obtained in the step S2 to obtain a finished product of the lightweight concrete.
Preferably, the cement is a mixture of PO525 cement and PO425 cement, and the mass ratio of the PO525 cement to the PO425 cement is 3: 5.
Preferably, the quartz sand is a mixture of 20-50 meshes of quartz sand and 40-80 meshes of quartz sand, and the mass ratio of the 20-50 meshes of quartz sand to the 40-80 meshes of quartz sand is 3: 4.
Preferably, the washed river sand is 60-80 mesh washed river sand.
Preferably, the viscosity of the hydroxypropyl methylcellulose is 10-20 ten thousand mPa.s.
Preferably, the pp fibers have a moisture content of less than or equal to 3%.
Preferably, the material A comprises the following components in parts by weight: 15 parts of PO525 cement, 25 parts of PO425 cement, 15 parts of 20-50 mesh quartz sand, 20 parts of 40-80 mesh quartz sand, 15 parts of water-washed river sand and 8 parts of fly ash;
the material B comprises the following components in parts by weight: 1.7 parts of redispersible latex powder, 0.25 part of hydroxypropyl methyl cellulose, 0.1 part of starch ether, 0.15 part of pp fiber and 0.3 part of water reducing agent.
Preferably, in step S2, material a is stirred by a fully automatic mortar mixer.
Preferably, the fly ash is first-grade fly ash.
Preferably, the redispersible latex powder is vinyl acetate and ethylene copolymer rubber powder, vinyl acetate and ethylene and higher fatty acid vinyl ester terpolymer rubber powder, and vinyl acetate and higher fatty acid vinyl ester copolymer rubber powder.
Preferably, the pp fibers are reinforced pp fibers; the length of the reinforced pp fiber is 12-20 mm, the tensile strength is more than or equal to 500MPa, and the elastic modulus is more than or equal to 3850 MPa.
Preferably, the water reducing agent is at least one of a naphthalene water reducing agent, an aliphatic water reducing agent and a polycarboxylic acid water reducing agent.
The invention has the following function principle:
the invention uses the redispersible latex powder, the redispersible latex powder forms a film after dispersion, and the redispersible latex powder is used as an organic adhesive to play a role in enhancing the organic adhesive and improve the cohesion of concrete. The use of the pp fiber (polypropylene fiber) can prevent, reduce and delay early plastic cracking and greatly improve the comprehensive performance of the lightweight concrete. The pp fiber has extremely high alkali resistance, good chemical stability and good dispersibility in the lightweight concrete, and plays a purely physical reinforcement role in the lightweight concrete.
Compared with the prior art, the invention has the beneficial effects that:
the preparation process is simple and convenient to operate; the light concrete disclosed by the invention contains the redispersible latex powder, the hydroxypropyl methyl cellulose, the starch ether and the pp fiber, so that the strength of the light concrete is improved, the toughness is enhanced, and the light concrete is not easy to crack.
Detailed Description
The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.
Example 1
A preparation technology of special mortar for medium-sized concrete composite building blocks comprises the following steps:
the lightweight concrete comprises a material A and a material B; the material A comprises the following components in parts by weight: 15 parts of PO525 cement, 25 parts of PO425 cement, 15 parts of 20-50 mesh quartz sand, 20 parts of 40-80 mesh quartz sand, 15 parts of water-washed river sand and 8 parts of fly ash;
the material B comprises the following components in parts by weight: 1.7 parts of redispersible latex powder, 0.25 part of hydroxypropyl methyl cellulose, 0.1 part of starch ether, 0.15 part of pp fiber and 0.3 part of water reducing agent.
The preparation technology comprises the following steps:
s1, weighing the components of the material B according to the proportion, and uniformly stirring the components by using a mixing device to obtain a core master batch;
s2, weighing the components of the material A according to the proportion, and uniformly stirring the components by using a full-automatic mortar mixer for 5 min; then adding the core master batch obtained in the step S1, and continuously stirring uniformly for 7min to obtain a mixture;
and S3, packaging the mixture obtained in the step S2 to obtain a finished product of the lightweight concrete.
The washing river sand is 60-80 meshes.
The viscosity of the hydroxypropylmethylcellulose was 15 ten thousand mPa · s.
The pp fiber has a water content of less than or equal to 3%.
The fly ash is first-grade fly ash.
The redispersible latex powder is vinyl acetate and ethylene copolymer powder.
The pp fibers are reinforced pp fibers; the length of the reinforced pp fiber is 16mm, the tensile strength is more than or equal to 500MPa, and the elastic modulus is more than or equal to 3850 MPa.
The water reducing agent is a naphthalene water reducing agent.
Example 2
A preparation technology of special mortar for medium-sized concrete composite building blocks comprises the following steps:
the lightweight concrete comprises a material A and a material B; the material A comprises the following components in parts by weight: 37 parts of cement, 38 parts of quartz sand, 13 parts of washed river sand and 10 parts of fly ash;
the material B comprises the following components in parts by weight: 1.5 parts of redispersible latex powder, 0.2 part of hydroxypropyl methyl cellulose, 0.15 part of starch ether, 0.1 part of pp fiber and 0.4 part of water reducing agent;
the preparation technology comprises the following steps:
s1, weighing the components of the material B according to the proportion, and uniformly stirring the components by using a mixing device to obtain a core master batch;
s2, weighing the components of the material A according to the proportion, and uniformly stirring the components by using a full-automatic mortar mixer for 7 min; then adding the core master batch obtained in the step S1, and continuously stirring uniformly for 6min to obtain a mixture;
and S3, packaging the mixture obtained in the step S2 to obtain a finished product of the lightweight concrete.
The cement is a mixture of PO525 cement and PO425 cement, and the mass ratio of the PO525 cement to the PO425 cement is 3: 5.
The quartz sand is a mixture of 20-50 meshes of quartz sand and 40-80 meshes of quartz sand, and the mass ratio of the 20-50 meshes of quartz sand to the 40-80 meshes of quartz sand is 3: 4.
The washing river sand is 60-80 meshes.
The viscosity of the hydroxypropylmethylcellulose was 20 ten thousand mPa · s.
The pp fiber has a water content of less than or equal to 3%.
The fly ash is first-grade fly ash.
The redispersible latex powder is ternary copolymer rubber powder of vinyl acetate, ethylene and higher fatty acid vinyl ester.
The pp fibers are reinforced pp fibers; the length of the reinforced pp fiber is 20mm, the tensile strength is more than or equal to 500MPa, and the elastic modulus is more than or equal to 3850 MPa.
The water reducing agent is an aliphatic water reducing agent.
Example 3
A preparation technology of special mortar for medium-sized concrete composite building blocks comprises the following steps:
the lightweight concrete comprises a material A and a material B; the material A comprises the following components in parts by weight: 43 parts of cement, 33 parts of quartz sand, 17 parts of washed river sand and 6 parts of fly ash;
the material B comprises the following components in parts by weight: 1.9 parts of redispersible latex powder, 0.3 part of hydroxypropyl methyl cellulose, 0.05 part of starch ether, 0.2 part of pp fiber and 0.2 part of water reducing agent;
the preparation technology comprises the following steps:
s1, weighing the components of the material B according to the proportion, and uniformly stirring the components by using a mixing device to obtain a core master batch;
s2, weighing the components of the material A according to the proportion, uniformly stirring the components by using a full-automatic mortar mixer, then adding the core master batch obtained in the step S1, and continuously uniformly stirring the components to obtain a mixture;
and S3, packaging the mixture obtained in the step S2 to obtain a finished product of the lightweight concrete.
The cement is a mixture of PO525 cement and PO425 cement, and the mass ratio of the PO525 cement to the PO425 cement is 3: 5.
The quartz sand is a mixture of 20-50 meshes of quartz sand and 40-80 meshes of quartz sand, and the mass ratio of the 20-50 meshes of quartz sand to the 40-80 meshes of quartz sand is 3: 4.
The washing river sand is 60-80 meshes.
The viscosity of the hydroxypropylmethylcellulose was 10 ten thousand mPa · s.
The pp fiber has a water content of less than or equal to 3%.
The fly ash is first-grade fly ash.
The redispersible latex powder is copolymer rubber powder of vinyl acetate and higher fatty acid vinyl ester.
The pp fibers are reinforced pp fibers; the length of the reinforced pp fiber is 12mm, the tensile strength is more than or equal to 500MPa, and the elastic modulus is more than or equal to 3850 MPa.
The water reducing agent is a polycarboxylic acid water reducing agent.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (8)
1. A preparation technology of special mortar for medium-sized concrete composite blocks is characterized by comprising the following steps:
the lightweight concrete comprises a material A and a material B; the material A comprises the following components in parts by weight: 37-43 parts of cement, 33-38 parts of quartz sand, 13-17 parts of water-washed river sand and 6-10 parts of fly ash;
the material B comprises the following components in parts by weight: 1.5-1.9 parts of redispersible latex powder, 0.2-0.3 part of hydroxypropyl methyl cellulose, 0.05-0.15 part of starch ether, 0.1-0.2 part of pp fiber and 0.2-0.4 part of water reducing agent;
the preparation technology comprises the following steps:
s1, weighing the components of the material B according to the proportion, and uniformly stirring the components by using a mixing device to obtain a core master batch;
s2, weighing the components of the material A according to the proportion, uniformly stirring the components by using a mixing device, then adding the core master batch obtained in the step S1, and continuously uniformly stirring the components to obtain a mixture;
and S3, packaging the mixture obtained in the step S2 to obtain a finished product of the lightweight concrete.
2. The preparation technology of the special mortar for the medium-sized concrete composite building blocks according to claim 1, which is characterized in that: the cement is a mixture of PO525 cement and PO425 cement, and the mass ratio of the PO525 cement to the PO425 cement is 3: 5.
3. The preparation technology of the special mortar for the medium-sized concrete composite building blocks according to claim 2, which is characterized in that: the quartz sand is a mixture of 20-50 meshes of quartz sand and 40-80 meshes of quartz sand, and the mass ratio of the 20-50 meshes of quartz sand to the 40-80 meshes of quartz sand is 3: 4.
4. The preparation technology of the mortar special for the medium-sized concrete composite blocks according to claim 3, characterized in that: the washing river sand is 60-80 meshes.
5. The preparation technology of the special mortar for the medium-sized concrete composite building blocks according to claim 4, which is characterized in that: the viscosity of the hydroxypropyl methylcellulose is 10-20 ten thousand mPa.s.
6. The preparation technology of the special mortar for the medium-sized concrete composite building blocks according to claim 5, which is characterized in that: the pp fiber has a water content of less than or equal to 3%.
7. The preparation technology of the mortar special for the medium-sized concrete composite blocks according to claim 6, characterized in that: the material A comprises the following components in parts by weight: 15 parts of PO525 cement, 25 parts of PO425 cement, 15 parts of 20-50 mesh quartz sand, 20 parts of 40-80 mesh quartz sand, 15 parts of water-washed river sand and 8 parts of fly ash; the material B comprises the following components in parts by weight: 1.7 parts of redispersible latex powder, 0.25 part of hydroxypropyl methyl cellulose, 0.1 part of starch ether, 0.15 part of pp fiber and 0.3 part of water reducing agent.
8. The preparation technology of the special mortar for the medium-sized concrete composite blocks according to claim 7, which is characterized in that: in step S2, the material a is stirred by a full-automatic mortar mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111366317.3A CN113880531A (en) | 2021-11-18 | 2021-11-18 | Preparation technology of special mortar for medium-sized concrete composite building blocks |
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| CN202111366317.3A CN113880531A (en) | 2021-11-18 | 2021-11-18 | Preparation technology of special mortar for medium-sized concrete composite building blocks |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659380A (en) * | 2012-05-30 | 2012-09-12 | 南京天云新型建材科技有限公司 | Modified building plastering mortar for aerated concrete |
| CN105254244A (en) * | 2015-09-30 | 2016-01-20 | 安徽坤隆新型建材有限公司 | Mortar used for making thermal insulation air-entrapped brick |
| CN105837120A (en) * | 2016-04-14 | 2016-08-10 | 广西横县恒丰建材有限责任公司 | Aerated concrete block masonry mortar and production method thereof |
| CN106082868A (en) * | 2016-06-20 | 2016-11-09 | 浙江正裕科技股份有限公司 | A kind of novel dry-mixed masonry mortar |
| CN108623239A (en) * | 2018-06-25 | 2018-10-09 | 广东复特新型材料科技有限公司 | A kind of air entrained concrete dedicated mortar |
| CN110194614A (en) * | 2018-02-27 | 2019-09-03 | 辽宁工程技术大学 | A kind of environment protection energy-saving type insulating block |
| CN110886431A (en) * | 2019-12-16 | 2020-03-17 | 焦作朝钦节能建材股份有限公司 | Medium-sized concrete composite building block for low-rise building and manufacturing method thereof |
-
2021
- 2021-11-18 CN CN202111366317.3A patent/CN113880531A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659380A (en) * | 2012-05-30 | 2012-09-12 | 南京天云新型建材科技有限公司 | Modified building plastering mortar for aerated concrete |
| CN105254244A (en) * | 2015-09-30 | 2016-01-20 | 安徽坤隆新型建材有限公司 | Mortar used for making thermal insulation air-entrapped brick |
| CN105837120A (en) * | 2016-04-14 | 2016-08-10 | 广西横县恒丰建材有限责任公司 | Aerated concrete block masonry mortar and production method thereof |
| CN106082868A (en) * | 2016-06-20 | 2016-11-09 | 浙江正裕科技股份有限公司 | A kind of novel dry-mixed masonry mortar |
| CN110194614A (en) * | 2018-02-27 | 2019-09-03 | 辽宁工程技术大学 | A kind of environment protection energy-saving type insulating block |
| CN108623239A (en) * | 2018-06-25 | 2018-10-09 | 广东复特新型材料科技有限公司 | A kind of air entrained concrete dedicated mortar |
| CN110886431A (en) * | 2019-12-16 | 2020-03-17 | 焦作朝钦节能建材股份有限公司 | Medium-sized concrete composite building block for low-rise building and manufacturing method thereof |
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Application publication date: 20220104 |