CN106145848A - Calcination-free desulfurized gypsum building mortar - Google Patents
Calcination-free desulfurized gypsum building mortar Download PDFInfo
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- CN106145848A CN106145848A CN201510257522.4A CN201510257522A CN106145848A CN 106145848 A CN106145848 A CN 106145848A CN 201510257522 A CN201510257522 A CN 201510257522A CN 106145848 A CN106145848 A CN 106145848A
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- calcination
- desulfurized gypsum
- building mortar
- free desulfurized
- concrete
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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 present invention relates to calcination-free desulfurized gypsum building mortar, belong to building mortar field, following raw material form by weight preparation (all configurations replace to preparation) at normal temperatures: calcination-free desulfurized gypsum 10%～13%, flyash 10%～13%, concrete regenerating Binder Materials 5%～15%, regenerative bone material by concrete 56%～70%, exciting agent 1%～4%, modifying agent 0.5%～1%.The present invention improves the utilization rate of trade waste desulfurated plaster and discarded concrete, effectively reduces the cost of building mortar, has the feature of high water proofing property, high-adhesion.
Description
Technical field
The present invention relates to building mortar field, specifically, be calcination-free desulfurized gypsum building mortar.
Background technology
Existing building mortar is the highest to trade waste utilization rate, and desulfurated plaster uses as plaster of Paris after calcining, and flyash uses as mortar and concrete admixture.Regenerative gel material and aggregate fraction prepared by discarded concrete use on mortar and concrete.
Owing to the resistance to water of gypsum mortar is poor, prior art many employings dispersibility latex powder or waterproofing agent of organosilicon improve the water resistance of material, use the gypsum mortar of separability latex powder, after repeatedly accepting water soaking, its water resistance can substantially reduce, and waterproofing agent of organosilicon is expensive.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that calcination-free desulfurized gypsum building mortar.
For achieving the above object, the present invention provides following technical scheme:
The present invention relates to calcination-free desulfurized gypsum building mortar, it is characterized in that, by following raw material at normal temperatures by weight formulated: calcination-free desulfurized gypsum 10%～13%, flyash 10%～13%, concrete regenerating Binder Materials 5%～15%, regenerative bone material by concrete 56%～70%, exciting agent 1%～4%, modifying agent 0.5%～1%.
As the further scheme of the present invention, in described calcination-free desulfurized gypsum, the content of calcium sulphate dihydrate is not less than 95%.
As the further scheme of the present invention, described flyash uses second class powered coal ash.
Further scheme as the present invention, described concrete regenerating Binder Materials is the granule using following methods to process, method is: strength grade be C30 discarded concrete broken after to take particle diameter at 550 DEG C～650 DEG C after calcining, ball milling, screening be 0.075mm following components through secondary ball milling process, meet 0.045mm standard screen tail over no more than 20% granule.
Further scheme as the present invention, described regenerative bone material by concrete is the granule using following methods to process, method is: strength grade is to calcine 60min to 180min after C30 discarded concrete crushes at 550 DEG C～650 DEG C, through ball mill ball milling 15min to 30min, take the granule between 0.075mm to 4.75mm after screening, then dry to moisture content less than 2% at 110 DEG C～130 DEG C after the fatty alcohol of C8～22 is configured in the solution of 15%～30% to soak 2h～5h.
As the further scheme of the present invention, described exciting agent is the most formulated at normal temperatures by following reagent: lime powder 90%, sodium sulfate powder 10%.
As the further scheme of the present invention, described modifying agent is the most formulated at normal temperatures by following reagent: naphthalene water reducer 20%, powdered pitch 70%, polyvinyl alcohol 6%, copper sulphate powder 4%.
As the further scheme of the present invention, described powdered pitch is that emulsified asphalt is through being spray-dried the granule becoming mean diameter≤100um.
Compared with prior art, the positive effect of the present invention is:
1. the present invention makes full use of power plant's by-product desulfurated plaster, prepared by discarded concrete regenerative gel material and the Desulfurization gypsum sand pulp that regeneration aggregate is fabricated to, the cost of building mortar can be effectively reduced, make full use of power plant's product desulfurated plaster and building mortar that discarded concrete produces as main raw material(s), improve the regenerative bone material by concrete synergism that the adhesive property of material adds copper sulphate powder and powdered pitch and fatty alcohol processed and improve the adhesive property of material.Can farthest utilize existing garbage.
2. the present invention uses calcium oxide and sodium sulfate as exciting agent, under the effect of exciting agent, OH ion has been broken in flyash and have been become low activity state after the network structure of Al-O, Si-O key, and generate drated calcium aluminate and hydrated calcium silicate with calcium hydroxide reaction, and drated calcium aluminate generates entringite further with calcium sulphate dihydrate (desulfurated plaster) reaction, material is made to have preferable early strength, dry-mixed mortar prepared by its microdilatancy effect is more closely knit, thus improves the mechanical property of material further.
3. the present invention use polyvinyl alcohol, copper sulphate powder, powdered pitch, naphthalene water reducer mixture as modifying agent, polyvinyl alcohol has adjusts solidifying, water retention, powdered pitch can improve the water resistance of material, and naphthalene water reducer can lower water consumption, improves resistance to compression, rupture strength.
Detailed description of the invention
For the technological means making the present invention realize, character of innovation, reach purpose and be easy to understand with effect, the present invention is further elucidated below.
Embodiment 1:
The present invention relates to calcination-free desulfurized gypsum building mortar, by following raw material at normal temperatures by weight formulated: calcination-free desulfurized gypsum 10%, flyash 10%, concrete regenerating Binder Materials 10%, regenerative bone material by concrete 68.5%, exciting agent 1%, modifying agent 0.5%.
Wherein, in described calcination-free desulfurized gypsum, the content of calcium sulphate dihydrate is not less than 95%.
Wherein, described flyash uses second class powered coal ash.
Wherein, described concrete regenerating Binder Materials is the granule using following methods to process, method is: strength grade be C30 discarded concrete broken after to take particle diameter at 550 DEG C～650 DEG C after calcining, ball milling, screening be 0.075mm following components through secondary ball milling process, meet 0.045mm standard screen tail over no more than 20% granule.
Wherein, described regenerative bone material by concrete is the granule using following methods to process, method is: strength grade is to calcine 60min to 180min after C30 discarded concrete crushes at 550 DEG C～650 DEG C, through ball mill ball milling 15min to 30min, take the granule between 0.075mm to 4.75mm after screening, then dry to moisture content less than 2% at 110 DEG C～130 DEG C after the fatty alcohol of C8～22 is configured in the solution of 15%～30% to soak 2h～5h.
Wherein, described exciting agent is the most formulated at normal temperatures by following reagent: lime powder 90%, sodium sulfate powder 10%.
Wherein, described modifying agent is the most formulated at normal temperatures by following reagent: naphthalene water reducer 20%, powdered pitch 70%, polyvinyl alcohol 6%, copper sulphate powder 4%.
Wherein, described powdered pitch is that emulsified asphalt is through being spray-dried the granule becoming mean diameter≤100um.
Product performance index in the present embodiment is: 28d comprcssive strength 7.3MPa, 5.5h, 28d shrinkage factor setting time 0.01%.
Embodiment 2: the present invention relates to calcination-free desulfurized gypsum building mortar, by following raw material at normal temperatures by weight formulated: calcination-free desulfurized gypsum 12%, flyash 12%, concrete regenerating Binder Materials 12%, regenerative bone material by concrete 62.2%, exciting agent 1.2%, modifying agent 0.6%.
Wherein, reagent and the method for preparation above-mentioned raw materials is with embodiment 1.
Product performance index in the present embodiment is: 28d comprcssive strength 12.6MPa, 6h, 28d shrinkage factor setting time 0.05%.
Embodiment 3: the present invention relates to calcination-free desulfurized gypsum building mortar, by following raw material at normal temperatures by weight formulated: calcination-free desulfurized gypsum 13%, flyash 13%, concrete regenerating Binder Materials 15%, regenerative bone material by concrete 56.7%, exciting agent 1.5%, modifying agent 0.8%.
Wherein, reagent and the method for preparation above-mentioned raw materials is with embodiment 1.
Product performance index in the present embodiment is: 28d comprcssive strength 18.2MPa, 8h, 28d shrinkage factor setting time 0.11%.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is limited by claims rather than described above, it is intended that include in the present invention by all changes fallen in the implication of equivalency and scope of claim, should not be considered as limiting involved claim by any reference in claim.
Claims (8)
1. calcination-free desulfurized gypsum building mortar, it is characterised in that by following raw material at normal temperatures by weight formulated:
Calcination-free desulfurized gypsum 10%～13%, flyash 10%～13%, concrete regenerating Binder Materials 5%～15%,
Regenerative bone material by concrete 56%～70%, exciting agent 1%～4%, modifying agent 0.5%～1%.
Calcination-free desulfurized gypsum building mortar the most according to claim 1, it is characterised in that described calcination-free desulfurized
In Gypsum Fibrosum, the content of calcium sulphate dihydrate is not less than 95%.
Calcination-free desulfurized gypsum building mortar the most according to claim 1, it is characterised in that described flyash uses
Second class powered coal ash.
Calcination-free desulfurized gypsum building mortar the most according to claim 1, it is characterised in that described concrete regenerating
Binder Materials is the granule using following methods to process, and method is: strength grade is after C30 discarded concrete crushes
Taking particle diameter at 550 DEG C～650 DEG C after calcining, ball milling, screening is that 0.075mm following components processes through secondary ball milling,
Meet 0.045mm standard screen tail over no more than 20% granule.
Calcination-free desulfurized gypsum building mortar the most according to claim 1, it is characterised in that described concrete regenerating
Aggregate is the granule using following methods to process, and method is: strength grade is at 550 DEG C after C30 discarded concrete crushes
～at 650 DEG C, calcine 60min to 180min, through ball mill ball milling 15min to 30min, after screening, take 0.075mm
Granule between 4.75mm, then be configured in the solution of 15%～30% to soak 2h～5h at the fatty alcohol of C8～22
After dry to moisture content less than 2% at 110 DEG C～130 DEG C.
Calcination-free desulfurized gypsum building mortar the most according to claim 1, it is characterised in that described exciting agent by with
Lower reagent is at normal temperatures by weight formulated: lime powder 90%, sodium sulfate powder 10%.
Calcination-free desulfurized gypsum building mortar the most according to claim 1, it is characterised in that described modifying agent by
Following reagent is at normal temperatures by weight formulated: naphthalene water reducer 20%, powdered pitch 70%, polyvinyl alcohol
6%, copper sulphate powder 4%.
Calcination-free desulfurized gypsum building mortar the most according to claim 7, it is characterised in that described powdered pitch is
Emulsified asphalt becomes the granule of mean diameter≤100um through being spray-dried.
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| CN201510257522.4A CN106145848B (en) | 2015-05-19 | 2015-05-19 | Calcination-free desulfurized gypsum building mortar |
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| CN201510257522.4A CN106145848B (en) | 2015-05-19 | 2015-05-19 | Calcination-free desulfurized gypsum building mortar |
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| CN106145848A true CN106145848A (en) | 2016-11-23 |
| CN106145848B CN106145848B (en) | 2018-10-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107226671A (en) * | 2017-07-19 | 2017-10-03 | 合肥广民建材有限公司 | One kind exempts from calcining dry powder and mortar and preparation method thereof |
| CN111662045A (en) * | 2020-07-01 | 2020-09-15 | 山东摩泥卡环保科技有限公司 | Construction waste desulfurized gypsum double-waste backfill self-leveling method |
| CN112794683A (en) * | 2021-01-13 | 2021-05-14 | 南京工业大学 | Waste concrete-based regenerated cementing material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1710200A (en) * | 2005-07-05 | 2005-12-21 | 武汉理工大学 | Method for preparing regenerative gel material using waste concrete |
| CN101343160A (en) * | 2007-07-13 | 2009-01-14 | 杨德志 | Concrete regeneration aggregate industrial mortar |
| CN101549983A (en) * | 2009-02-27 | 2009-10-07 | 济南高新区工业废石膏利用研发中心 | Calcination-free desulfurized gypsum perfused dry mixed adhesive mortar |
| CN102643071A (en) * | 2012-05-17 | 2012-08-22 | 浙江方远建材科技有限公司 | Calcination-free desulfurized gypsum walling plastering dry-mixed mortar |
-
2015
- 2015-05-19 CN CN201510257522.4A patent/CN106145848B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1710200A (en) * | 2005-07-05 | 2005-12-21 | 武汉理工大学 | Method for preparing regenerative gel material using waste concrete |
| CN101343160A (en) * | 2007-07-13 | 2009-01-14 | 杨德志 | Concrete regeneration aggregate industrial mortar |
| CN101549983A (en) * | 2009-02-27 | 2009-10-07 | 济南高新区工业废石膏利用研发中心 | Calcination-free desulfurized gypsum perfused dry mixed adhesive mortar |
| CN102643071A (en) * | 2012-05-17 | 2012-08-22 | 浙江方远建材科技有限公司 | Calcination-free desulfurized gypsum walling plastering dry-mixed mortar |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107226671A (en) * | 2017-07-19 | 2017-10-03 | 合肥广民建材有限公司 | One kind exempts from calcining dry powder and mortar and preparation method thereof |
| CN111662045A (en) * | 2020-07-01 | 2020-09-15 | 山东摩泥卡环保科技有限公司 | Construction waste desulfurized gypsum double-waste backfill self-leveling method |
| CN112794683A (en) * | 2021-01-13 | 2021-05-14 | 南京工业大学 | Waste concrete-based regenerated cementing material and preparation method thereof |
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| CN106145848B (en) | 2018-10-23 |
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