CN110104982A - Application method of the curing agent in ultra-high performance concrete in alkaline residue - Google Patents

Application method of the curing agent in ultra-high performance concrete in alkaline residue Download PDF

Info

Publication number
CN110104982A
CN110104982A CN201910304512.XA CN201910304512A CN110104982A CN 110104982 A CN110104982 A CN 110104982A CN 201910304512 A CN201910304512 A CN 201910304512A CN 110104982 A CN110104982 A CN 110104982A
Authority
CN
China
Prior art keywords
alkaline residue
curing agent
ultra
high performance
performance concrete
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910304512.XA
Other languages
Chinese (zh)
Inventor
林浩钜
杨医博
张鸿昱
林钰
岳晓东
辛展文
韦含辛
郭文瑛
姚丁语
严与珩
王恒昌
张迪
刘夏玮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
South China University of Technology SCUT
Original Assignee
South China University of Technology SCUT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by South China University of Technology SCUT filed Critical South China University of Technology SCUT
Priority to CN201910304512.XA priority Critical patent/CN110104982A/en
Publication of CN110104982A publication Critical patent/CN110104982A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/0006Waste inorganic materials

Abstract

The invention belongs to building material technical fields, and in particular to application method of the curing agent in ultra-high performance concrete in a kind of alkaline residue.This method replaces the silicon ash in ultra-high performance concrete using quality such as curing agents in alkaline residue, and the amount ranges of curing agent are the 3%~5% of cementitious material quality in alkaline residue, and the quality of the additional water of curing agent is 30%~60% of curing agent quality in alkaline residue in alkaline residue;It adds in alkaline residue after curing agent, the 28d age compression strength of ultra-high performance concrete does not reduce, and the self-constriction of 3d age reduces by 20% or more.The present invention provides a kind of methods for efficiently using alkaline residue, additionally it is possible under the premise of guaranteeing ultra-high performance concrete intensity, the self-constriction of ultra-high performance concrete be effectively reduced, and can reduce the cost of ultra-high performance concrete.

Description

Application method of the curing agent in ultra-high performance concrete in alkaline residue
Technical field
The invention belongs to building material technical fields, and in particular to curing agent is in ultra-high performance concrete in a kind of alkaline residue Application method.
Background technique
Ultra-high performance concrete has superelevation durability and superhigh intensity, and it is in recent years that compression strength, which is more than 100MPa, The novel concrete sill to grow up, water-cement ratio are usually 0.14 to 0.20, and since water-cement ratio is low, self-constriction is very big, It easilys lead to crack.
It is the effective way for solving the problems, such as this using interior curing agent, but existing research shows that adds high-hydroscopicity tree The interior curing agent of rouge can reduce concrete strength while reducing ultra-high performance concrete self-constriction, and it is new not to be badly in need of exploitation Reduce the interior curing agent of concrete strength.
Alkaline residue is ammonia-soda process soda ash and the waste residue generated.China is currently maximum soda manufacture state in the world, often The alkaline residue that year generates because producing soda ash is up to 3,000,000 tons, and so a large amount of alkaline residue causes many problem of environmental pollutions.But alkali Slag chloride ion content is high, and the mass of ion score under absolute dry condition can reach 10%, so that the secondary use of alkaline residue is difficult It is heavy.Alkaline residue utilization rate in China's only has 3~4% at present, and main processing ways are stockpiling or fill out extra large processing, brings to environment The problems such as such as " white sea " phenomenon.
Early-stage study finds there is large quantity micropore gap in alkaline residue, and the structure of alkaline residue can carry out water suction and release water, reach The effect of interior maintenance;Concrete will not be made to generate hole there is a phenomenon where particle atrophy simultaneously, therefore as interior curing agent It is feasible.
Applicant early period alkaline residue is dechlorinated after, with flyash intergrinding powder, replace slag and powder as interior curing agent Coal ash is added in ultra-high performance concrete.Result of study shows that it can reduce the self-constriction of ultra-high performance concrete, but same When can reduce the working performance and 28d compression strength of concrete.Therefore, being badly in need of exploitation a kind of can keep ultra-high performance concrete The method that 28d compression strength does not reduce and ultra-high performance concrete self-constriction can be effectively reduced.
Summary of the invention
The technical problems to be solved by the present invention are: keeping very-high performance mixed how using alkaline residue as interior curing agent Coagulate soil 28d compression strength do not reduce in the case where, the self-constriction of ultra-high performance concrete can be effectively reduced, realize become give up into It is precious.
In order to solve the above-mentioned technical problem, it is mixed in very-high performance that the purpose of the present invention is to provide curing agents in a kind of alkaline residue Application method in solidifying soil.
To achieve the goals above, The technical solution adopted by the invention is as follows:
Application method of the curing agent in ultra-high performance concrete in a kind of alkaline residue is replaced with quality such as curing agents in alkaline residue Silicon ash is added in ultra-high performance concrete, and the amount ranges of curing agent are the 3%~5% of cementitious material quality, alkaline residue in alkaline residue The quality of the additional water of interior curing agent is 30%~60% of curing agent quality in alkaline residue;
Curing agent is that the waste residue alkaline residue of ammonia-soda process soda ash is successively dechlorinated, breaks up and dried in the alkaline residue, Interior conserving material obtained by powder is made with fly cutter or mill again, chloride ion content is lower than 0.30wt%, and partial size is greater than The granule content of 0.080mm is less than 10wt%.
Preferably, the water-cement ratio range of the ultra-high performance concrete is 0.14~0.20, and compression strength is greater than 100MPa。
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) in the alkaline residue that uses of the present invention curing agent be by alkaline residue successively by dechlorination, break up and dry, then with fly cutter or Interior conserving material obtained by powder is made in mill, and particle is thinner, and without mixing material is added, interior maintenance effect is good, There are positive influences to intensity.
(2) it adding in alkaline residue after curing agent as required, the 28d age compression strength of ultra-high performance concrete does not reduce, and The self-constriction of 3d age reduces by 20% or more.
(3) silicon ash is most thin, the highest admixture of price in ultra-high performance concrete, replaces silicon ash with alkaline residue, can reduce Water-reducing agent dosage can effectively reduce cost, and the efficient utilization of curing agent in alkaline residue may be implemented.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto. For not specifically specified technological parameter, routine techniques progress can refer to.
Embodiment 1
The present embodiment provides application method of the curing agent in ultra-high performance concrete in a kind of alkaline residue.
Curing agent is prepared using fly cutter flour mill in alkaline residue, chloride ion content 0.24wt%, and partial size is greater than 0.080mm Granule content be 8wt%.Ultra-high performance concrete water-cement ratio 0.18, curing agent volume is cementitious material quality in alkaline residue 4.0%, etc. quality replace silicon ash, additional water flowing rate be alkaline residue in curing agent quality 50%;By standard GB/T/T 31387- 2015 and GB/T 50082-2009 detection, compared to the blank control group that curing agent in alkaline residue is not added, ultra-high performance concrete 28d compression strength, which improves 1.0%, 3d self-constriction, reduces by 36.3%.
Embodiment 2
The present embodiment provides application method of the curing agent in ultra-high performance concrete in a kind of alkaline residue.
Curing agent is prepared using mill flour mill in alkaline residue, chloride ion content 0.20wt%, and partial size is greater than 0.080mm Granule content be 6wt%.Ultra-high performance concrete water-cement ratio 0.14, curing agent volume is cementitious material quality in alkaline residue 3.0%, etc. quality replace silicon ash, additional water flowing rate be alkaline residue in curing agent quality 60%;By standard GB/T/T 31387- 2015 and GB/T 50082-2009 detection, compared to the blank control group that curing agent in alkaline residue is not added, the 28d pressure resistance of concrete Degree, which improves 0.5%, 3d self-constriction, reduces by 24.1%.
Embodiment 3
The present embodiment provides application method of the curing agent in ultra-high performance concrete in a kind of alkaline residue.
Curing agent is prepared using fly cutter flour mill in alkaline residue, chloride ion content 0.05wt%, and partial size is greater than 0.080mm Granule content be 9wt%.Ultra-high performance concrete water-cement ratio 0.20, curing agent volume is cementitious material quality in alkaline residue 5.0%, etc. quality replace silicon ash, additional water flowing rate be alkaline residue in curing agent quality 30%;By standard GB/T/T 31387- 2015 and GB/T 50082-2009 detection, compared to the blank control group that curing agent in alkaline residue is not added, the 28d pressure resistance of concrete Degree, which improves 0.3%, 3d self-constriction, reduces by 35.5%.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by the embodiment Limitation, it is other it is any without departing from the spirit and principles of the present invention made by change, modification, substitution, combination and simplify, It should be equivalent substitute mode, be included within the scope of the present invention.

Claims (2)

1. application method of the curing agent in ultra-high performance concrete in a kind of alkaline residue, it is characterised in that: with curing agent in alkaline residue Etc. quality replace silicon ash, be added ultra-high performance concrete in, the amount ranges of curing agent are the 3% of cementitious material quality in alkaline residue ~5%, the quality of the additional water of curing agent is 30%~60% of curing agent quality in alkaline residue in alkaline residue;
Curing agent is that the waste residue alkaline residue of ammonia-soda process soda ash is successively dechlorinated, breaks up and dried, then is used in the alkaline residue Interior conserving material obtained by powder is made in fly cutter or mill, and chloride ion content is lower than 0.30wt%, and partial size is greater than 0.080mm's Granule content is less than 10wt%.
2. application method of the curing agent in ultra-high performance concrete in alkaline residue according to claim 1, it is characterised in that: The water-cement ratio range of the ultra-high performance concrete is 0.14~0.20, and compression strength is greater than 100MPa.
CN201910304512.XA 2019-04-16 2019-04-16 Application method of the curing agent in ultra-high performance concrete in alkaline residue Pending CN110104982A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910304512.XA CN110104982A (en) 2019-04-16 2019-04-16 Application method of the curing agent in ultra-high performance concrete in alkaline residue

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910304512.XA CN110104982A (en) 2019-04-16 2019-04-16 Application method of the curing agent in ultra-high performance concrete in alkaline residue

Publications (1)

Publication Number Publication Date
CN110104982A true CN110104982A (en) 2019-08-09

Family

ID=67485523

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910304512.XA Pending CN110104982A (en) 2019-04-16 2019-04-16 Application method of the curing agent in ultra-high performance concrete in alkaline residue

Country Status (1)

Country Link
CN (1) CN110104982A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115490448A (en) * 2021-06-17 2022-12-20 华南理工大学 Method for reducing self-shrinkage of ultrahigh-performance concrete, high-strength concrete and high-strength mortar

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105693124A (en) * 2016-01-20 2016-06-22 山东大学 Preparation method and application method of fine reclaimed aggregate for concrete internal curing
CN106167362A (en) * 2016-07-15 2016-11-30 华南理工大学 A kind of alkaline residue water-retaining agent and preparation method and application

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105693124A (en) * 2016-01-20 2016-06-22 山东大学 Preparation method and application method of fine reclaimed aggregate for concrete internal curing
CN106167362A (en) * 2016-07-15 2016-11-30 华南理工大学 A kind of alkaline residue water-retaining agent and preparation method and application

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
普永强: "除氯碱渣用作内养护材料对混凝土性能影响及其机理研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115490448A (en) * 2021-06-17 2022-12-20 华南理工大学 Method for reducing self-shrinkage of ultrahigh-performance concrete, high-strength concrete and high-strength mortar
CN115490448B (en) * 2021-06-17 2023-07-18 华南理工大学 Method for reducing self-shrinkage of ultra-high-performance concrete, high-strength concrete and high-strength mortar

Similar Documents

Publication Publication Date Title
CN104193202B (en) A kind of high-moisture-retention cement
CN108640547B (en) Iron tailing/metakaolin based geopolymer and preparation method thereof
CN109574565A (en) A kind of regeneration concrete and preparation method thereof
CN104119056B (en) Road paving material prepared from phosphogypsum composite residues and preparation method thereof
CN104692720B (en) A kind of copper tailing is non-burning brick and preparation method thereof
CN107244819B (en) Converter hot-stewed steel slag powder activating agent and preparation method and application thereof
CN105819798B (en) A kind of quick setting and high strength sludge consolidating agent and preparation method thereof
CN102432207A (en) Construction regenerated binding material prepared from construction garbage and preparation method thereof
CN104190690A (en) Method for preparing chlorine-removal alkali residue mixture by utilizing alkali residues through ammonia-soda process and application of chlorine-removal alkali residue mixture
CN109456027B (en) Titanium slag extraction lime stabilized macadam material and preparation method thereof
CN106478012A (en) A kind of sludge curing agent and preparation method thereof
CN107162456A (en) A kind of alkali slag cement accumulation of salt in the surface soil inhibitor and preparation method thereof
CN102329119B (en) High performance concrete admixture and preparation method thereof
CN102659365A (en) Desulfurized ash residue mixed dry mortar
CN106186959B (en) A kind of regenerative micro powder mortar and preparation method thereof
CN111732395B (en) Waste concrete-based regenerated dry powder masonry mortar and preparation method thereof
CN113264701A (en) Coal gangue powder used as pumping concrete admixture and preparation method and application thereof
CN105060743B (en) The cement material prepared using useless ceramic tile powder
CN108059430B (en) Autoclaved foam concrete production process based on carbon dioxide emission reduction
CN110104982A (en) Application method of the curing agent in ultra-high performance concrete in alkaline residue
CN108751840A (en) The treatment process of clinker and the concrete prepared using the clinker
KR101352401B1 (en) Furnace slag cement composition and Mortar mixed with the furnace slag cement composition
CN115893879B (en) Preparation method of solid waste-based superfine special composite cementing material and cementing material
CN108516741B (en) Steel slag sand-straw ash composite doping mortar and preparation method thereof
CN111847996A (en) Fly ash mortar and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20190809

RJ01 Rejection of invention patent application after publication