CN105948551A - Green reinforced composite type concrete expanding agent and preparation method thereof - Google Patents
Green reinforced composite type concrete expanding agent and preparation method thereof Download PDFInfo
- Publication number
- CN105948551A CN105948551A CN201610268598.1A CN201610268598A CN105948551A CN 105948551 A CN105948551 A CN 105948551A CN 201610268598 A CN201610268598 A CN 201610268598A CN 105948551 A CN105948551 A CN 105948551A
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- CN
- China
- Prior art keywords
- fluidized bed
- agent
- flyash
- water reducer
- microballon
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Classifications
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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 a green reinforced composite type concrete expanding agent and a preparation method thereof. The expanding agent is composed of the components by mass: 40%-60% of micro beads, 20%-45% of circulating fluidized bed desulfurized ash, 10%-20% of fly ash, 0.5%-1% of an activator and 0.5%-1% of a water reducing agent. The green reinforced composite type concrete expanding agent provided by the invention not only solves the problems that resources are wasted and a serious burden is caused on the environment because the utilization rate of micro beads and circulating fluidized bed desulfurized ash is low, but also can increase the strength of concrete and improve the concrete workability and durability; in addition, the concrete expanding agent has the advantages of simple production process, low price, easy promotion and application, and relatively good economic benefits, social benefits and environmental benefits.
Description
Technical field
The present invention relates to building material technical field, be specially a kind of green enhancing expansion agent for composite type concrete and system thereof
Preparation Method.
Background technology
Cement expansive material grows up on the basis of expanding cement, is mainly used to prepare expansive concrete
And self-stressing concretes, the anti-crack and anti-seepage performance of concrete can be improved so that it is structure is finer and close, it is in modern work
Application in journey is more and more extensive.But cement expansive material is of a great variety, quality is very different, and some more influences whether
The performance of concrete；The aspect more or less existing defects such as the production raw material of the most existing extender and production cost,
It is difficult to meet the highest environment and application demand.
Microballon (superfined flyash) is the flying dust that coal-fired station discharges from chimney, after special equipment is collected
The flyash obtained, its mean diameter about 1.2 μm, is a kind of globular glass body, therefore referred to as microballon.Microballon uses water
Cement concrete can make Free water be emitted with the intergranular hole of filling concrete, increase the mobility of mud,
After the high activity of microballon makes slurry hardening, intensity improves.And currently China is the most less to research and the Appropriate application of microballon,
Do not have the microballon utilized to occupy substantial amounts of stockyard, pollute environment simultaneously yet.How to realize microballon Appropriate application optimization,
Reduce environmental pollution simultaneously and become a new problem.
Burning in circulating fluid bed boiler has become the cleaning coal-fired power generator set that China greatly develops, its desulfurization product simultaneously
Recirculating fluidized bed Desulphurization discharge capacity is higher than common coal-fired mode, is very different with ordinary fly ash, and people are to following
The performance understanding of circulation fluidized bed desulfurizing ash is comprehensive not enough, may produce relatively great danger if it used by ordinary fly ash
Evil, abandons process and may pollute environment waste resource.Therefore, Appropriate application recirculating fluidized bed Desulphurization, carry out resource
Change processes turns waste into wealth for urgent problem instantly, is extremely important energy conservation, environmental conservation.
Summary of the invention
For solving the problem that prior art exists, the present invention proposes a kind of green enhancing expansion agent for composite type concrete.This
The green expansion agent for composite type concrete that strengthens of invention, environmental protection, can improve the intensity of concrete simultaneously, improve
Working performance of concrete and endurance quality.
The technical scheme is that
Described a kind of green enhancing expansion agent for composite type concrete, it is characterised in that: by microballon, recirculating fluidized bed desulfurization
Ash, flyash, exciting agent and water reducer composition, each constituent mass proportioning is: microballon 40%-60%, recirculating fluidized bed
Desulphurization 20%-45%, flyash 10%-20%, exciting agent 0.5%-1%, water reducer 0.5%-1%.
Further preferred version, described a kind of green enhancing expansion agent for composite type concrete, it is characterised in that: by micro-
Pearl, recirculating fluidized bed Desulphurization, flyash, exciting agent and water reducer composition, each constituent mass proportioning is: microballon 40%,
Recirculating fluidized bed Desulphurization 45%, flyash 13.5%, exciting agent 1%, water reducer 0.5%.
Further preferred version, described a kind of green enhancing expansion agent for composite type concrete, it is characterised in that: by micro-
Pearl, recirculating fluidized bed Desulphurization, flyash, exciting agent and water reducer composition, each constituent mass proportioning is: microballon 60%,
Recirculating fluidized bed Desulphurization 20%, flyash 18.5%, exciting agent 0.5%, water reducer 1%.
Further preferred version, described a kind of green enhancing expansion agent for composite type concrete, it is characterised in that: by micro-
Pearl, recirculating fluidized bed Desulphurization, flyash, exciting agent and water reducer composition, each constituent mass proportioning is: microballon 40%,
Recirculating fluidized bed Desulphurization 38.15%, flyash 20%, exciting agent 0.85%, water reducer 1%.
Further preferred version, described a kind of green enhancing expansion agent for composite type concrete, it is characterised in that: by micro-
Pearl, recirculating fluidized bed Desulphurization, flyash, exciting agent and water reducer composition, each constituent mass proportioning is: microballon 43.5%,
Recirculating fluidized bed Desulphurization 45%, flyash 10%, exciting agent 1%, water reducer 0.5%.
Further preferred version, described a kind of green enhancing expansion agent for composite type concrete, it is characterised in that: described
Flyash is first level flour coal ash and/or second class powered coal ash.
Further preferred version, described a kind of green enhancing expansion agent for composite type concrete, it is characterised in that: described
Exciting agent is sodium hydroxide or the alkali-activator being composited containing sodium hydroxide.
Further preferred version, described a kind of green enhancing expansion agent for composite type concrete, it is characterised in that: described
Water reducer is poly carboxylic acid series water reducer or the naphthalene water reducer of powder body.
Described a kind of green preparation method strengthening expansion agent for composite type concrete, it is characterised in that: comprise the following steps:
Step 1: by recirculating fluidized bed Desulphurization and exciting agent intergrinding 30min-50min, obtains modified ciculation fluidized
Bed Desulphurization；
Step 2: described modified recirculating fluidized bed Desulphurization is carried out non-grinding with microballon, flyash and water reducer and mixes
Prepare cement expansive material.
Beneficial effect
The green expansion agent for composite type concrete that strengthens that the present invention proposes not only solves microballon and recirculating fluidized bed Desulphurization
Utilization rate is low, and environment can be caused the problem of serious burden by the wasting of resources simultaneously, can also improve the intensity of concrete simultaneously,
Improve working performance of concrete and endurance quality；Additionally the concrete expansion agent producing process of the present invention is simple, and price is low
Honest and clean, it is simple to popularization and application, there is preferable economic benefit, social benefit and environmental benefit.
The additional aspect of the present invention and advantage will part be given in the following description, and part will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the embodiment of description is exemplary, it is intended to be used for explaining the present invention,
And be not considered as limiting the invention.
Embodiment 1:
The present embodiment Green strengthens expansion agent for composite type concrete and is made up of according to respective quality ratio following components: micro-
Pearl 40%, recirculating fluidized bed Desulphurization 45%, flyash 13.5%, exciting agent 1%, water reducer 0.5%.Described powder
Coal ash is the one-level fine coal meeting national standard " flyash in cement and concrete " (GB/T 1596-2005)
Ash.Described exciting agent is sodium hydroxide exciting agent.Described water reducer is the naphthalene water reducer of powder body.
It is by the recirculating fluidized bed desulfurization of said components ratio that this green strengthens the preparation method of expansion agent for composite type concrete
Ash and exciting agent intergrinding 50min, obtain modified recirculating fluidized bed Desulphurization, then taken off by modification recirculating fluidized bed
Sulfur is grey and remaining component (microballon, flyash and water reducer) carries out non-grinding and mixes, and stirs, obtains coagulation
Soil expansion agent.
Record according to " cement expansive material " (GB 23439-2009) and the present embodiment prepares extender maintenance in water
Within 7 days, limited expansion rate is 0.091%, and limited expansion rate when proceeding to deposit in air 21 days is 0.023%；Pressure resistance
Degree 7d be 37.4MPa, 28d be 53.2MPa, compared with the blank sample not filling the present embodiment and preparing extender respectively
Increase by 12.3% and 3.9%.
Embodiment 2:
The present embodiment Green strengthens expansion agent for composite type concrete and is made up of according to respective quality ratio following components: micro-
Pearl 60%, recirculating fluidized bed Desulphurization 20%, flyash 18.5%, exciting agent 0.5%, water reducer 1%.Described powder
Coal ash is the second patent flour coal meeting national standard " flyash in cement and concrete " (GB/T 1596-2005)
Ash.Described exciting agent is the alkali-activator being composited containing sodium hydroxide.Described water reducer is the polycarboxylic acids of powder body
Based water reducer.
It is by the recirculating fluidized bed desulfurization of said components ratio that this green strengthens the preparation method of expansion agent for composite type concrete
Ash and exciting agent intergrinding 30min, obtain modified recirculating fluidized bed Desulphurization, then taken off by modification recirculating fluidized bed
Sulfur is grey and remaining component (microballon, flyash and water reducer) carries out non-grinding and mixes, and stirs, obtains coagulation
Soil expansion agent.
Record according to " cement expansive material " (GB 23439-2009) and the present embodiment prepares extender maintenance in water
Within 7 days, limited expansion rate is 0.087%, and limited expansion rate when proceeding to deposit in air 21 days is 0.022%；Pressure resistance
Degree 7d be 37.0MPa, 28d be 52.9MPa, compared with the blank sample not filling the present embodiment and preparing extender respectively
Increase by 11.1% and 3.3%.
Embodiment 3:
The present embodiment Green strengthens expansion agent for composite type concrete and is made up of according to respective quality ratio following components: micro-
Pearl 40%, recirculating fluidized bed Desulphurization 38.15%, flyash 20%, exciting agent 0.85%, water reducer 1%.Described
Flyash is the second patent flour meeting national standard " flyash in cement and concrete " (GB/T 1596-2005)
Coal ash.Described exciting agent is sodium hydroxide exciting agent.Described water reducer is the poly carboxylic acid series water reducer of powder body.
It is by the recirculating fluidized bed desulfurization of said components ratio that this green strengthens the preparation method of expansion agent for composite type concrete
Ash and exciting agent intergrinding 45min, obtain modified recirculating fluidized bed Desulphurization, then taken off by modification recirculating fluidized bed
Sulfur is grey and remaining component (microballon, flyash and water reducer) carries out non-grinding and mixes, and stirs, obtains coagulation
Soil expansion agent.
Record according to " cement expansive material " (GB 23439-2009) and the present embodiment prepares extender maintenance in water
Within 7 days, limited expansion rate is 0.088%, and limited expansion rate when proceeding to deposit in air 21 days is 0.025%；Pressure resistance
Degree 7d be 36.9MPa, 28d be 53.0MPa, compared with the blank sample not filling the present embodiment and preparing extender respectively
Increase by 10.8% and 3.5%.
Embodiment 4:
The present embodiment Green strengthens expansion agent for composite type concrete and is made up of according to respective quality ratio following components: micro-
Pearl 43.5%, recirculating fluidized bed Desulphurization 45%, flyash 10%, exciting agent 1%, water reducer 0.5%.Described powder
Coal ash is the one-level fine coal meeting national standard " flyash in cement and concrete " (GB/T 1596-2005)
Ash.Described exciting agent is the alkali-activator being composited containing sodium hydroxide.Described water reducer is the polycarboxylic acids of powder body
Based water reducer.
It is by the recirculating fluidized bed desulfurization of said components ratio that this green strengthens the preparation method of expansion agent for composite type concrete
Ash and exciting agent intergrinding 50min, obtain modified recirculating fluidized bed Desulphurization, then taken off by modification recirculating fluidized bed
Sulfur is grey and remaining component (microballon, flyash and water reducer) carries out non-grinding and mixes, and stirs, obtains coagulation
Soil expansion agent.
Record according to " cement expansive material " (GB 23439-2009) and the present embodiment prepares extender maintenance in water
Within 7 days, limited expansion rate is 0.093%, and limited expansion rate when proceeding to deposit in air 21 days is 0.022%；Pressure resistance
Degree 7d be 37.3MPa, 28d be 53.3MPa, compared with the blank sample not filling the present embodiment and preparing extender respectively
Increase by 12.0% and 4.1%.
The green expansion agent for composite type concrete that strengthens that described embodiment shows to propose not only solves microballon and ciculation fluidized
Bed Desulphurization utilization rate is low, and environment can be caused the problem of serious burden by the wasting of resources simultaneously, can also improve coagulation simultaneously
The intensity of soil, improves working performance of concrete and endurance quality；The additionally concrete expansion agent producing process letter of the present invention
Single, cheap, it is simple to popularization and application, there is preferable economic benefit, social benefit and environmental benefit.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is example
Property, it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art without departing from the present invention principle and
Above-described embodiment can be changed within the scope of the invention in the case of objective, revise, replace and modification.
Claims (9)
1. one kind green strengthens expansion agent for composite type concrete, it is characterised in that: by microballon, recirculating fluidized bed Desulphurization,
Flyash, exciting agent and water reducer composition, each constituent mass proportioning is: microballon 40%-60%, recirculating fluidized bed
Desulphurization 20%-45%, flyash 10%-20%, exciting agent 0.5%-1%, water reducer 0.5%-1%.
The most green strengthen expansion agent for composite type concrete, it is characterised in that: by microballon,
Recirculating fluidized bed Desulphurization, flyash, exciting agent and water reducer composition, each constituent mass proportioning is: microballon 40%,
Recirculating fluidized bed Desulphurization 45%, flyash 13.5%, exciting agent 1%, water reducer 0.5%.
The most green strengthen expansion agent for composite type concrete, it is characterised in that: by microballon,
Recirculating fluidized bed Desulphurization, flyash, exciting agent and water reducer composition, each constituent mass proportioning is: microballon 60%,
Recirculating fluidized bed Desulphurization 20%, flyash 18.5%, exciting agent 0.5%, water reducer 1%.
The most green strengthen expansion agent for composite type concrete, it is characterised in that: by microballon,
Recirculating fluidized bed Desulphurization, flyash, exciting agent and water reducer composition, each constituent mass proportioning is: microballon 40%,
Recirculating fluidized bed Desulphurization 38.15%, flyash 20%, exciting agent 0.85%, water reducer 1%.
The most green strengthen expansion agent for composite type concrete, it is characterised in that: by microballon,
Recirculating fluidized bed Desulphurization, flyash, exciting agent and water reducer composition, each constituent mass proportioning is: microballon 43.5%,
Recirculating fluidized bed Desulphurization 45%, flyash 10%, exciting agent 1%, water reducer 0.5%.
Any one green enhancing expansion agent for composite type concrete the most according to claims 1 to 5, it is characterised in that: institute
Stating flyash is first level flour coal ash and/or second class powered coal ash.
A kind of green enhancing expansion agent for composite type concrete, it is characterised in that excite described in:
Agent is sodium hydroxide or the alkali-activator being composited containing sodium hydroxide.
A kind of green enhancing expansion agent for composite type concrete, it is characterised in that: described diminishing
Agent is poly carboxylic acid series water reducer or the naphthalene water reducer of powder body.
9. preparing any one green method strengthening expansion agent for composite type concrete described in Claims 1 to 5, it is special
Levy and be: comprise the following steps:
Step 1: by recirculating fluidized bed Desulphurization and exciting agent intergrinding 30min-50min, obtains modified ciculation fluidized
Bed Desulphurization；
Step 2: described modified recirculating fluidized bed Desulphurization is carried out non-grinding with microballon, flyash and water reducer and mixes
Prepare cement expansive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610268598.1A CN105948551A (en) | 2016-04-27 | 2016-04-27 | Green reinforced composite type concrete expanding agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610268598.1A CN105948551A (en) | 2016-04-27 | 2016-04-27 | Green reinforced composite type concrete expanding agent and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182143A (en) * | 2007-11-07 | 2008-05-21 | 北京航空航天大学 | Preparation of composite high-expansion cementing material by using industrial slag and preparation technique thereof |
| CN101913790A (en) * | 2010-08-27 | 2010-12-15 | 西南科技大学 | Concrete expansion agent containing circulating fluidized bed combustion coal solid sulfur clinker |
| CN101973724A (en) * | 2010-09-15 | 2011-02-16 | 山西科腾环保科技有限公司 | Expander |
| CN102167536A (en) * | 2011-01-25 | 2011-08-31 | 河海大学 | Secondary ettringite type expanding agent and preparation method and application thereof |
-
2016
- 2016-04-27 CN CN201610268598.1A patent/CN105948551A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182143A (en) * | 2007-11-07 | 2008-05-21 | 北京航空航天大学 | Preparation of composite high-expansion cementing material by using industrial slag and preparation technique thereof |
| CN101913790A (en) * | 2010-08-27 | 2010-12-15 | 西南科技大学 | Concrete expansion agent containing circulating fluidized bed combustion coal solid sulfur clinker |
| CN101973724A (en) * | 2010-09-15 | 2011-02-16 | 山西科腾环保科技有限公司 | Expander |
| CN102167536A (en) * | 2011-01-25 | 2011-08-31 | 河海大学 | Secondary ettringite type expanding agent and preparation method and application thereof |
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Application publication date: 20160921 |