CN104944820A - Cornstalk concrete lightweight aggregate preparation method - Google Patents
Cornstalk concrete lightweight aggregate preparation method Download PDFInfo
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- CN104944820A CN104944820A CN201510354062.7A CN201510354062A CN104944820A CN 104944820 A CN104944820 A CN 104944820A CN 201510354062 A CN201510354062 A CN 201510354062A CN 104944820 A CN104944820 A CN 104944820A
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- China
- Prior art keywords
- maize straw
- aggregate
- concrete
- cement
- cornstalk
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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 a cornstalk concrete lightweight aggregate preparation method. The concrete lightweight aggregate preparation method which is low in price, saves energy and is environmentally friendly is provided for rural areas in the northern area in China for overcoming the defect that a large number of resources and energy sources are consumed for traditional lightweight aggregates. The method comprises the following steps that water is adopted for wetting cornstalk aggregates in advance; an emulsion type adhesion agent is adopted for spraying and dipping; the cornstalk aggregates and cement dry powder are stirred and wrap particles in advance, and first-class coal ash with the 30% cement content is added as a mineral admixture; a plastic film is adopted for covering and health keeping for more than 48 h; a waterproof agent is sprayed; after drying is performed, the mixture is used as coarse aggregates for forming the lightweight aggregate concrete.
Description
Technical field
The invention belongs to civil engineering work concrete material technical field of construction, specifically a kind of maize straw concrete light aggregate preparation method.
Background technology
There is a large amount of straw refuse rural areas in our country, especially maize straw high number, deals with very difficult, and usually burn in field, serious environment pollution is one of major reason causing haze.The materials for wall that simultaneously farm dwelling uses adopts clay solid brick substantially, and not only cost is very high, and fires clay solid brick and need use a large amount of clay, and waste energy contaminate environment, destroys a large amount of farmland simultaneously.National departments concerned prohibits production and the use of clay solid brick for this reason in most area.Meanwhile, the cement wall material product of instead of clay solid brick also emerges in multitude out, comprises all kinds of building block, wall board, cast-in-situ wall material etc.; Composition material comprises cement slag goods, cement Pottery product, cement pearl rock product etc.Common lightweight aggregate concrete adopts haydite as coarse aggregate, and ceramsite sintering need consume mass energy and clay resource.Maize straw belongs to the renewable resource that can be recycled, abundance, can save a large amount of resources with its alternative general aggregate preparation lightweight aggregate concrete; Its cost of manufacture is cheap, trucking costs is low; Construction is simple, saves building cost, has excellent heat-insulating property and warming effect, can significantly reduce New village house construction cost.Straw light aggregate concrete material is from heavy and light, and soundproof effect is good, improves dwelling house comfortable degree, effectively improves rural residence environment.
Summary of the invention
There is the shortcoming consuming ample resources and the energy for above traditional light skeletal, the present invention is that the rural area of the northern area of China provides cheap, energy-conserving and environment-protective, durable a kind of maize straw concrete light aggregate preparation method lastingly.Adopt ordinary Portland cement and flyash as gelling material, adopt the maize straw of different-grain diameter as coarse aggregate, adopt flyash as Additive, add water and fully stir aftershaping.
The present invention selects maturation, dry maize straw, pulverizes after removing leaf, and the large I of particle diameter requires to select according to concrete performance.General Large stone heat insulation effect is better, but supporting capacity is poor; Comparatively small particle size is then contrary, and supporting capacity is better, and heat insulation effect is poor.Maize straw aggregate need wrap up in slurry process in advance, to improve concrete strength and to save cement, and improves the ability of the anticorrosive anti-mildew change of maize straw.Specifically be divided into following steps:
A. adopt water to maize straw aggregate pre-wet;
B. emulsion-type interfacial agents is adopted to spray dipping;
C. stir with cement powder and wrap up in particle in advance, add the first level flour coal ash of cement consumption 30% as Additive;
D. covered rearing with plastic film health more than 48 hours is adopted;
E. water-resisting agent is sprayed;
F. lightweight aggregate concrete is prepared as coarse aggregate after drying.
A kind of maize straw concrete light of the present invention aggregate preparation method, can increase the mixing materials such as part slag and steel-making slag powder, in order to regulate concrete unit weight and intensity when making lightweight aggregate concrete.Select coal ash instead part of cement, to reduce its cost.Proportioning, according to normal concrete method of calculation, according to the particle diameter of maize straw, selects suitable proportioning.
The beneficial effect of a kind of maize straw concrete light of the present invention aggregate preparation method is: maize straw particle diameter sprays dipping by emulsion-type interfacial agents, particle diameter surface is combined firmly by cement and flyash parcel, due to the alkalescence effect of cement, prevent the generation of maize straw particle diameter moldy metamorphism and the phenomenon such as infested.After spraying water-resisting agent outside cement, when making maize straw as coarse aggregate, decrease concrete moisture absorption, also in use improve concrete waterproof and moisture protection simultaneously, improve the weather resistance of maize straw lightweight aggregate concrete.
Accompanying drawing explanation
Fig. 1 is the maize straw light skeletal particle diameter after process.1. maize straw particle diameter, 2. interface agent layer, 3. cement powders integument, 4. waterproof layer.
Embodiment
Embodiment 1: make maize straw coarse aggregate.
Select dry fresh maize straw, remove the accessory constituents such as stamen, leaf, fruit position, adopt chopper to cut into segment, form maize straw particle diameter 1.Maize straw particle diameter 1 is of a size of 30-50mm, first in advance the maize straw particle diameter 1 got ready was sprinkled water wetting in 24 hours, after airing is slightly dry to surface, vinyl acetate between to for plastic-vac emulsion interfacial agents is evenly sprayed at particle diameter surface, form interface agent layer 2, after interfacial layer 2 has sprayed, maize straw particle diameter 1 is dropped in concrete mixer, the flyash of cement powder and cement amount 30% is dropped into by 5% of maize straw particle diameter 1 volume, cement powders integument 3 is formed on maize straw particle diameter 1 surface after stirring, after placing shady and cool Indoor Natural health to 48 hour, after aggregate surface even application inorganic aluminate water-proof agent, form particle diameter waterproof layer 4, so far maize straw coarse aggregate completes.
Embodiment 2: adopt maize straw coarse aggregate preparation lightweight aggregate concrete.
The maize straw particle diameter 1 that coarse aggregate adopts embodiment 1 to process, fine aggregate adopts Nenjiang nature medium sand, and mixing water adopts tap water.Adopt PO 32.5 ordinary Portland cement as gelling material, the flyash of admixture cement consumption 30%, as Additive, separately requires to add the body of wall rejected materials such as part slag, slag according to mix-design.By Additives such as gelling material cement, fine aggregate, coarse aggregate, water, flyash, slag, slags in design calculation ratio, stir after dropping into stirrer, build shaping after, the building block of maize straw lightweight aggregate concrete or maize straw lightweight aggregate concrete component can be become.
Claims (2)
1. a maize straw concrete light aggregate preparation method, is characterized in that: maize straw aggregate is made up of maize straw particle diameter, interface agent layer, cement powders integument, waterproof layer.
2. a kind of maize straw concrete light aggregate preparation method according to claim 1, is characterized in that: aggregate is prepared key step and comprised A. and adopt water to maize straw aggregate pre-wet; B. emulsion-type interfacial agents is adopted to spray dipping; C. stir with cement powder and wrap up in particle in advance, add the first level flour coal ash of cement consumption 30% as Additive; D. covered rearing with plastic film health more than 48 hours is adopted; E. water-resisting agent is sprayed; F. lightweight aggregate concrete is prepared as coarse aggregate after drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510354062.7A CN104944820A (en) | 2015-06-25 | 2015-06-25 | Cornstalk concrete lightweight aggregate preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510354062.7A CN104944820A (en) | 2015-06-25 | 2015-06-25 | Cornstalk concrete lightweight aggregate preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104944820A true CN104944820A (en) | 2015-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510354062.7A Pending CN104944820A (en) | 2015-06-25 | 2015-06-25 | Cornstalk concrete lightweight aggregate preparation method |
Country Status (1)
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| CN (1) | CN104944820A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731851A (en) * | 2016-02-04 | 2016-07-06 | 东南大学 | Light high-strength crack-resistance auxiliary material and method for improving crack resistance and heat preservation performance of concrete |
| WO2017035679A1 (en) * | 2015-09-03 | 2017-03-09 | Universidad Católica Del Maule | Lightweight concrete with particles of chemically treated maize waste and production method thereof |
| CN108640552A (en) * | 2018-05-04 | 2018-10-12 | 江苏省安全生产科学研究院 | A technique for preparing heat-insulation wall plate lightweight aggregate using bagasse and portland cement |
| CN114538833A (en) * | 2022-01-26 | 2022-05-27 | 东方雨虹砂粉科技集团有限公司 | Aggregate and preparation method thereof |
| CN114538834A (en) * | 2022-01-26 | 2022-05-27 | 东方雨虹砂粉科技集团有限公司 | Cement-based mortar composition |
-
2015
- 2015-06-25 CN CN201510354062.7A patent/CN104944820A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017035679A1 (en) * | 2015-09-03 | 2017-03-09 | Universidad Católica Del Maule | Lightweight concrete with particles of chemically treated maize waste and production method thereof |
| CN105731851A (en) * | 2016-02-04 | 2016-07-06 | 东南大学 | Light high-strength crack-resistance auxiliary material and method for improving crack resistance and heat preservation performance of concrete |
| CN108640552A (en) * | 2018-05-04 | 2018-10-12 | 江苏省安全生产科学研究院 | A technique for preparing heat-insulation wall plate lightweight aggregate using bagasse and portland cement |
| CN114538833A (en) * | 2022-01-26 | 2022-05-27 | 东方雨虹砂粉科技集团有限公司 | Aggregate and preparation method thereof |
| CN114538834A (en) * | 2022-01-26 | 2022-05-27 | 东方雨虹砂粉科技集团有限公司 | Cement-based mortar composition |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150930 |
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| WD01 | Invention patent application deemed withdrawn after publication |