CN103145440B - Comprehensive foaming method of light-weight cement - Google Patents
Comprehensive foaming method of light-weight cement Download PDFInfo
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- CN103145440B CN103145440B CN201310065469.9A CN201310065469A CN103145440B CN 103145440 B CN103145440 B CN 103145440B CN 201310065469 A CN201310065469 A CN 201310065469A CN 103145440 B CN103145440 B CN 103145440B
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Abstract
The invention discloses a comprehensive foaming method of light-weight cement, which comprises the following steps: A. mixing water and dry matters according to the required water-to-cement ratio; B. adding a proper amount of modifier according to the weight of the dry matters to obtain a mixture, wherein the modifier accounts for 1-2 wt% of the dry matters; C. putting the mixture in an ordinary mortar stirrer, and stirring while adding a foam promoter, wherein the foam promoter accounts for 1-6 wt% of the dry matters; and D. stirring uniformly, and meanwhile, completing foaming to obtain the light-weight cement for later use. The comprehensive foaming method of light-weight cement is not a single physical or chemical foaming method, is free from the restrictions of special mechanical equipment, foaming time and the like by the single foaming method, and completes the foaming process in the material stirring process, thereby achieving the application goal; and the method disclosed by the invention is not only suitable for foaming ordinary Portland cement, but also can be used for foaming sulfoaluminate cement, magnesium oxychloride cement and other cementing materials.
Description
Technical field
The present invention relates to a kind of foam production method of cement, in particular a kind of light cement composite type foaming method.
Background technology
Light foaming concrete (light foaming cement), application existing decades of history in building trade, its foaming method has physical type foaming and chemical formula foaming.As: the light foaming cement physical type foaming that is applied in the engineerings such as roofing heat-insulating layer is cast-in-place obtains, first with special system bubble machine, physical blowing powder (cream) is watered in proportion, the foam that foaming machine is made is sneaked in the grout being stirred, and builds by pumping.If foaming cement thermal insulation plate is exactly to make with chemical formula foaming, first the materials such as cement are stirred after pulping in proportion with special vertical stirrer, the hydrogen peroxide of additional proportion must be put into foam box by grout fast within tens seconds, in three minutes, completes foaming.
Foam cement must use single special-purpose stirring machine or special foaming machine to complete with simple physical type foaming or simple chemical formula foaming, can not replace special-purpose stirring machine or special-purpose foaming machine complete cement mixing foaming with general mortar mixer, and also not reach making sheet requirement with the water cement ratio that general mortar mixer stirs the cement obtaining; And physical blowing method or chemical blowing process can be subject to the constraint of specific equipment or foamed time, limit widely foam cement and produced prefabricated light building material product by mechanize making sheet.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The object of the present invention is to provide a kind of light cement composite type foaming method, being intended to solve existing physical blowing method or chemical blowing process must use specific equipment to complete foaming, foaming process is subject to the constraint of specific equipment or foamed time, has limited widely the raising of foam cement product production efficiency.
Technical scheme of the present invention is as follows: a kind of light cement composite type foaming method, wherein, comprises following concrete steps:
Steps A: water cement ratio as requested, mixes water and siccative;
Step B: according to the unit weight of desired product, add appropriate properties-correcting agent, obtain mixture, the add-on of described properties-correcting agent is the 1%-2% of siccative weight;
Step C: mixture is put in ordinary mortar stirrer and stirred, add short infusion in whipping process, the add-on of described short infusion is the 1%-6% of siccative weight according to desired product unit weight;
Step D: stir and complete foaming simultaneously, obtain light cement, for subsequent use.
Described light cement composite type foaming method, wherein, described water cement ratio is w/c50-65%
Described light cement composite type foaming method, wherein, described properties-correcting agent is the mixing of organic modifiers and inorganic modified dose.
Described light cement composite type foaming method, wherein, described short infusion is hydrogen peroxide.
Described light cement composite type foaming method, wherein, described siccative comprises any multinomial combination of silicate cement, quartz sand, discarded slag, granules of polystyrene, haydite, perlite, flyash, slag.
Described light cement composite type foaming method, wherein, described siccative comprises silicate cement, quartz sand, discarded slag, granules of polystyrene.
Described light cement composite type foaming method, wherein, the add-on of described properties-correcting agent is 1.8% of siccative weight, the add-on of short infusion is 1.2% of siccative weight.
Described light cement composite type foaming method, wherein, the add-on of described properties-correcting agent is 1.6% of siccative weight, the add-on of short infusion is 3% of siccative weight.
Beneficial effect of the present invention: the present invention is by providing a kind of light cement composite type foaming method, this composite type foaming method is not single physical type or chemical formula foaming method, be not subject to the constraints such as single foaming special mechanical equipment or foamed time, this composite type foaming method is on the proportioning basis of the materials such as cement, appropriate physical properties sparklet (cream) and a small amount of organic admixture to be mixed or premix simultaneously, in the whipping process of material, add the appropriate hydrogen peroxide catalyzed fast foaming that impels with common mortar mixer, also completed foaming process completing material stirring simultaneously, this composite type foaming method is not only useful in common silicate cement foaming, can also be used for the foaming of the gelling material such as aluminosulfate cement, magnesia oxychloride cement, the density unit weight of light cement can arbitrarily be adjusted according to technology insulation requirement between 260-1800kg/ m3, and can fill the appropriate solid waste such as aglite or flyash, slag material.
Brief description of the drawings
Fig. 1 is the flow chart of steps of light cement composite type foaming method in the present invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearer, clear and definite, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.
Physical foaming is to form the foam with some tension after whipping agent is utilized to air compressor machine (being foaming machine) pressurization, then foam and grout are stirred simultaneously, in whipping process, cement will constantly expand, and after expansion effect reaches predefined proportioning, can form foam cement; And after chemical foaming refers to that a whipping agent (liquid/Powdered solid-state) adds and stirs in cement slurry, chemical reaction occurs discharge gas cement volume is constantly expanded, expansion effect reaches the set condition of filling a prescription in advance and forms foam cement.
As shown in Figure 1, be the flow chart of steps of this light cement composite type foaming method.Described light cement composite type foaming method comprises following concrete steps:
Steps A: water cement ratio as requested, water and siccative are mixed, the 50%-60%(that described water accounts for total proportion is that water cement ratio is 2:3-1:1);
Step B: according to the weight of siccative, add appropriate properties-correcting agent, obtain mixture, the add-on of described properties-correcting agent is the 1%-2% of siccative weight;
Step C: mixture is put in ordinary mortar stirrer and stirred, add short infusion in whipping process, the add-on of described short infusion is the 1%-6% of siccative weight;
Step D: stir and complete foaming simultaneously, obtain light cement, for subsequent use.
Described properties-correcting agent is the mixing of inorganic modified dose of organic modifiers and light calcium carbonate, the water glass etc. such as hydroxypropyl methyl cellulose ether, redispersable latex powder; Described short infusion is hydrogen peroxide (H2O2); Described siccative, according to the concrete proportioning of actual requirement, comprises ordinary Portland cement, quartz sand, discarded slag and granules of polystyrene etc.
Described short infusion hydrogen peroxide (H2O2) in whipping process, occur following chemical reaction: 2H-O-O-H=2H-O-H+O=O ↑, the properties-correcting agent of surfactivity class has higher surface-active action simultaneously, can effectively reduce the surface tension of mixing liquid, and arrange at liquid film Surface Creation electric double layer, thereby surround chemical reaction and generate O2 formation bubble, then form even foam by single isolated bubbles.
The operating process of this light cement composite type foaming method is as follows: calculate water cement ratio according to production requirement, according to water cement ratio, water and siccative (composition of described siccative is determined according to needs of production) are mixed, described water accounts for the 50%-60% of total proportion; According to the weight of siccative, add appropriate properties-correcting agent, obtain mixture, the add-on of described properties-correcting agent is the 1%-2% of siccative weight; Mixture is put in ordinary mortar stirrer and stirred, in whipping process, add short infusion, the add-on of described short infusion is the 1%-6% of siccative weight, short infusion hydrogen peroxide (H2O2) in whipping process, occur following chemical reaction: 2H-O-O-H=2H-O-H+O=O ↑, the properties-correcting agent of surfactivity class has higher surface-active action simultaneously, can effectively reduce the surface tension of mixing liquid, and arrange at liquid film Surface Creation electric double layer, thereby surround chemical reaction and generate O2 formation bubble, then form even foam by single isolated bubbles; Stir and complete foaming simultaneously, obtain light cement, for subsequent use.
Embodiment 1: the operating process of producing the light cement that is used for combined light load-bearing self-heat conserving external wall body plate with this light cement composite type foaming method is as follows:
Water cement ratio: 65%; Density unit weight: 300kg/m3; Siccative composition: ordinary Portland cement, quartz sand, discarded slag, granules of polystyrene; Modifier content: 1.8% of siccative weight; Short infusion content: 1.2% of siccative weight.
Calculating water cement ratio according to production requirement is that 65%(is 7/13), according to water cement ratio 65%, water and siccative (composition of described siccative is ordinary Portland cement, quartz sand, discarded slag, granules of polystyrene) are mixed; According to the weight of siccative, add properties-correcting agent: content is 1.8% of siccative weight, obtains mixture; Mixture is put in ordinary mortar stirrer and stirred, in whipping process, add short infusion hydrogen peroxide (H2O2): content is 1.2% of siccative weight, short infusion hydrogen peroxide (H2O2) in whipping process, occur following chemical reaction: 2H-O-O-H=2H-O-H+O=O ↑, the properties-correcting agent of surfactivity class has higher surface-active action simultaneously, can effectively reduce the surface tension of mixing liquid, and arrange at liquid film Surface Creation electric double layer, thereby surround chemical reaction and generate O2 formation bubble, then form even foam by single isolated bubbles; Stir and complete foaming simultaneously, obtain light cement, for subsequent use.
Embodiment 2: the operating process of producing the light cement that is used for combined light self-heat conserving roof boarding with this light cement composite type foaming method is as follows:
Water cement ratio: 58%(is 21/29); Density unit weight: 400kg/m3; Siccative composition: ordinary Portland cement, quartz sand, discarded slag, granules of polystyrene; Modifier content: 1.6% of siccative weight; Short infusion content: 3% of siccative weight.
Calculating water cement ratio according to production requirement is 58%, according to water cement ratio 58%, water and siccative (composition of described siccative is ordinary Portland cement, quartz sand, discarded slag, granules of polystyrene) is mixed; According to the weight of siccative, add properties-correcting agent: content is 1.6% of siccative weight, obtains mixture; Mixture is put in ordinary mortar stirrer and stirred, in whipping process, add short infusion hydrogen peroxide (H2O2): content is 3% of siccative weight, short infusion hydrogen peroxide (H2O2) in whipping process, occur following chemical reaction: 2H-O-O-H=2H-O-H+O=O ↑, the properties-correcting agent of surfactivity class has higher surface-active action simultaneously, can effectively reduce the surface tension of mixing liquid, and arrange at liquid film Surface Creation electric double layer, thereby surround chemical reaction and generate O2 formation bubble, then form even foam by single isolated bubbles; Stir and complete foaming simultaneously, obtain light cement, for subsequent use.
This light cement composite type foaming method is not single physical type foaming or chemical formula foaming method, be not subject to the constraints such as single foaming special mechanical equipment and foamed time, this light cement composite type foaming method is on the basis of the material proportionings such as ordinary Portland cement, appropriate physical properties sparklet (cream) and a small amount of organic admixture (being properties-correcting agent) to be mixed or premix simultaneously, in the whipping process of material, add appropriate hydrogen peroxide (i.e. short infusion) catalysis to impel fast foaming with common mortar mixer, also completed foaming process completing material stirring simultaneously, to reach application target.This kind of foaming method is useful in the foaming of ordinary Portland cement incessantly, can also be used in the foaming of the gelling material such as aluminosulfate cement, magnesia oxychloride cement, density unit weight can arbitrarily be adjusted according to technology insulation requirement between 260-1800kg/m3, and can fill the appropriate solid waste such as aglite or flyash, slag material.
Utilize the light foaming cement that this light cement composite type foaming method makes (also can add according to actual needs haydite, perlite or granules of polystyrene, obtaining lightweight aggregate concrete) work-ing life is identical with ordinary mortar concrete, there is the premium propertiess such as insulation, heat insulation, sound insulation, fire prevention, antidetonation, low water absorption, can widespread use aspect building materials.
Should be understood that, application of the present invention is not limited to above-mentioned giving an example, and for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (4)
1. a light cement composite type foaming method, is characterized in that, comprises following concrete steps:
Steps A: water cement ratio as requested, mixes water and siccative;
Step B: according to the weight of siccative, add appropriate properties-correcting agent, obtain mixture, the add-on of described properties-correcting agent is the 1%-2% of siccative weight;
Step C: mixture is put in ordinary mortar stirrer and stirred, add short infusion in whipping process, the add-on of described short infusion is the 1%-6% of siccative weight;
Step D: stir and complete foaming simultaneously, obtain light cement, for subsequent use;
Described water cement ratio is 2:3-1:1; Described properties-correcting agent is the mixing of inorganic modified dose of hydroxypropyl methyl cellulose ether, redispersable latex powder organic modifiers and light calcium carbonate, water glass; Described short infusion is hydrogen peroxide.
2. light cement composite type foaming method according to claim 1, is characterized in that, described siccative comprises any multinomial combination of silicate cement, quartz sand, discarded slag, granules of polystyrene, haydite, perlite, flyash, slag.
3. according to the light cement composite type foaming method described in claim 1-2 any one, it is characterized in that, described siccative comprises silicate cement, quartz sand, discarded slag, granules of polystyrene.
4. according to the light cement composite type foaming method described in claim 1-2 any one, it is characterized in that, described water cement ratio is 21/29, and the add-on of described properties-correcting agent is 1.6% of siccative weight, and the add-on of short infusion is 3% of siccative weight.
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| CN104788120A (en) * | 2015-03-19 | 2015-07-22 | 张芳 | Anti-freezing composite foamed cement board and preparation method thereof |
| CN105218047A (en) * | 2015-08-30 | 2016-01-06 | 常州市鼎日环保科技有限公司 | A kind of preparation method of high strength foam concrete building block |
| CN105418160A (en) * | 2015-12-17 | 2016-03-23 | 安徽助成信息科技有限公司 | External wall heat insulating material |
| CN105780764A (en) * | 2016-03-30 | 2016-07-20 | 东南大学 | Light cemented soil composite mixing pile |
| CN108298919A (en) * | 2018-04-10 | 2018-07-20 | 佛山市三水万瑞达环保科技有限公司 | A kind of modified polystyrene composite architectural materials and its production method |
| CN116410017A (en) * | 2022-12-22 | 2023-07-11 | 万卓（武汉）新材料有限公司 | Preparation method of light board mixed slurry |
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| CN102344268A (en) * | 2011-06-22 | 2012-02-08 | 新疆生产建设兵团第五建筑安装工程公司 | Fly ash foamed plastic particle insulating and waterproof material, and manufacturing method thereof |
| CN102746021A (en) * | 2012-07-31 | 2012-10-24 | 北京鸿锐嘉科技发展有限公司 | Chemical foaming cement building material prepared by utilizing light particles and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102344268A (en) * | 2011-06-22 | 2012-02-08 | 新疆生产建设兵团第五建筑安装工程公司 | Fly ash foamed plastic particle insulating and waterproof material, and manufacturing method thereof |
| CN102746021A (en) * | 2012-07-31 | 2012-10-24 | 北京鸿锐嘉科技发展有限公司 | Chemical foaming cement building material prepared by utilizing light particles and preparation method thereof |
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