CN105016675B - A kind of preparation method of the high additive scrap glass powder self-compacting mortar with good volume stability - Google Patents
A kind of preparation method of the high additive scrap glass powder self-compacting mortar with good volume stability Download PDFInfo
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- CN105016675B CN105016675B CN201510388305.9A CN201510388305A CN105016675B CN 105016675 B CN105016675 B CN 105016675B CN 201510388305 A CN201510388305 A CN 201510388305A CN 105016675 B CN105016675 B CN 105016675B
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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
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Abstract
The present invention relates to a kind of preparation method of high additive scrap glass powder self-compacting mortar, belongs to solid waste recycling technology and high performance building materials preparation field.Add anhydrous sulphite and lithium salts inhibitor, high additive scrap glass powder self-compacting mortar early-age shrinkage is compensate for not only, and inhibit the long-term alkali_silica reaction expansion of high additive scrap glass self-compacting mortar, high additive scrap glass self-compacting mortar mechanical property, volume stability and anticorrosive environmental attack ability are improve, scrap glass powder self-compacting mortar use range is expanded.Compared with flyash self-compacting mortar, replace 40 50% cement using scrap glass powder, often produce one cubic metre of high additive scrap glass powder self-compacting mortar with good volume stability, the expense that can be saved material.
Description
Technical field
The present invention relates to a kind of preparation method of high additive scrap glass powder self-compacting mortar, belongs to solid waste circulation
Regenerative use technology and high performance building materials preparation field.
Background technology
Last century the seventies self-compacting mortar (Self-Compacting mortar:SCM) material starts to send out in Japan
Exhibition is got up, self-compacting mortar be it is a kind of by cement, mineral admixture, high efficiency water reducing agent, fine aggregate by regulation the ratio of mud prepare
New Building Materials.Self-compacting mortar has high mobility, need not be artificial floating in work progress, and mortar slurry exists
Can flow under self gravitation effect, and form even curface, self-compacting mortar has the characteristics of speed of application is fast, labor intensity is low.
Self-compacting mortar also has the advantages that bright and clean smooth, the hardened mortar intensity height of leveling layer thickness of thin, product, good endurance.From close
Real mortar is widely used in constructure ground making, industrial equipment foundation, soil, rock as a kind of new civil engineering material
In layer, oil well grouting works.
During preparing self-compacting mortar, it is to ensure that self-compacting mortar is not isolated in having enough fluidities, transportation to secrete
Water, needs to add than the more Binder Materials of ordinary mortar and additive in self-compacting mortar, and self-compacting mortar is with than normal sands
The higher cost of raw material of slurry, which has limited use of the self-compacting mortar in civil engineering.In order to overcome self-compacting mortar price
Since too high problem, eighties of last century the eighties, flyash, steel plant generation of some research worker using coal power generation generation
Ground slag be spiked in self-compacting mortar as admixture, prepare self-compacting mortar not only using flyash, ground slag
Compensate for that self-compacting mortar cement consumption is big, high cost defect, flyash, ground slag are further improved in mixing self-compacting mortar
Plaster workability and endurance quality.But in recent years as China is for the reinforcement of environmental conservation dynamics, highly energy-consuming, high pollution
Coal electricity, steel industry development be restricted, the trade waste such as flyash, ground slag source is more come to doubt and is lacked, price not section
Increase.Big, the cheap new admixture of searching amount prepares self-compacting mortar becomes various countries' research worker focal point.
Research worker found that levigate scrap glass powder had pozzolanic activity, alternative flyash, levigate ore deposit in recent years
Slag admixture is applied in cement-based material, but mix levigate scrap glass powder cement-based material alkali_silica reaction expansion compared with
Greatly, cement-based material volume stability is poor, therefore levigate scrap glass powder replaces cement proportion needs controlled in cement-based material
System below 20% this restrict levigate scrap glass powder as additive and extensively apply in cement-based material.
The content of the invention
During the technical problem to be solved in the present invention is prior art, in cement-based material, levigate scrap glass powder replaces water
The alkali_silica reaction expansion that the ratio of mud is low, mix levigate scrap glass powder cement-based material is larger and cement-based material volume is stable
Property difference problem.
To solve above-mentioned technical problem, the technical scheme that the present invention is provided is：
A kind of preparation method of the high additive scrap glass powder self-compacting mortar with good volume stability, including it is following
Step：
(1) scrap glass pretreatment：Including sorting, clean, crushing, ball milling；
(2) anhydrous sulphite is added in mixing water, and adjusts pH value；
(3) cement, levigate scrap glass powder, fine aggregate, lithium salts are put in the container equipped with agitator, add above-mentioned place
Mixing water after reason, stirring are mixed to get slurry；
(4) initial flow degree detection is carried out to gained slurry；
(5) mortar is poured and is conserved.
Described scrap glass pretreatment includes：After sorting, clean, drying, pulverization process is carried out to scrap glass, processed
Scrap glass afterwards sieves, and goes the removal of impurity with scrap glass granule in irregular shape；Scrap glass granule is put into into ball mill
Middle grinding, obtains levigate scrap glass powder, after levigate scrap glass powder places a period of time, detects levigate using laser particle analyzer
The particle size of scrap glass powder.
Scrap glass after process is passed through into 5mm square hole screens；Scrap glass granule is put into into grinding in ball grinder 30-60 point
Clock；After levigate scrap glass powder is placed 48 hours, the particle size of levigate scrap glass powder is detected using laser particle analyzer, control
Levigate scrap glass powder average particle size is made less than 15um.
In step (2), when in the mixing water needed for anhydrous sulphite is added to, described anhydrous sulphite accounts for glue
The 0.6-0.8% of gel material weight, and after anhydrous sulphite is dissolved completely in mixing water, adjusts solution ph control and exist
9-10。
In step (3), cement, levigate scrap glass powder, fine aggregate, lithium salts are put in the container equipped with agitator, plus
Enter in mixing water, preparation is concretely comprised the following steps：The cement of 40-50% is replaced to form Binder Materials with levigate discarded glass powder, by sand：Glue
Gel material：Mixing water is with (1.9～2.1)：1：The mass ratio of (0.35～0.45) is mixed to form mortar, and adds in mortar high
Effect water reducer PCA and lithium salts, high efficiency water reducing agent consumption for gel material content 2.3～2.8%, lithium salts consumption is the material that is gelled
The 0.08-0.12% of material consumption.
In step (3), by cement, levigate scrap glass powder, fine aggregate, lithium salts by being put into after the container equipped with agitator,
The mixed for several minutes under certain mixing speed, adds the mix aqueous solution containing sulphite and high efficiency water reducing agent PCA, continues to stir
Several minutes are mixed, manual stirring 1-2 time is carried out to mortar slurry using spades, finally mortar slurry is mixed with mixing speed faster
Close several minutes.
In step (4), fresh mortar slurry is put in Mortar'S Flowability test prod cast, the first of fresh mortar slurry is carried out
Beginning fluidity detects that control sample mortar is in certain initial flow degree.
In step (5), mortar slurry is poured in 40mm × 40mm × 160mm and 25mm × 25mm × 285mm die trials,
The outside of die trial covers wet gunnysack, in 25 DEG C of temperature, the indoor placement of humidity 55-65% 24 hours；After one day by sample by from
Die trial is removed, and sample is placed on temperature for 20 DEG C, and humidity continues maintenance to the age of regulation for 90 ± 5% fog room.
Comprcssive strength, rupture strength in regulation age to hardening scrap glass powder self-compacting mortar, water absorption rate, drying
Shrinkage value, alkali_silica reaction swell value are measured.
Beneficial effect：
Prepared by the present invention has the following advantages with good volume stability high additive scrap glass powder self-compacting mortar.
(1) compared with flyash self-compacting mortar, replace the cement of 40-50% using scrap glass powder, often production one is stood
Square rice has the high additive scrap glass powder self-compacting mortar of good volume stability, more than 5 yuan of the expense that can save material.Often
Year production this kind of 100,000 side of self-compacting mortar calculate, and the cost that can save material is nearly 500,000 yuan.
(2) levigate scrap glass powder has lower water absorption rate, in the case of keeping self-compacting mortar mobile performance constant,
Admixture high additive is levigate, and scrap glass powder can significantly reduce the consumption of high efficiency water reducing agent in self-compacting mortar.One cube is produced often
This kind of self-compacting mortar of rice can save 1 yuan of high efficiency water reducing agent cost of use, calculate by annual 100000 side self-compacting mortar, every year may be used
Save 100,000 yuan of Master Cost.
(3) substantial amounts of scrap glass is also consumed by using high additive scrap glass powder self-compacting mortar, it is to avoid tradition is filled out
Bury method and process the problem that scrap glass need to take a large amount of soils and severe contamination is produced to surrounding.Scrap glass is used as one
Resource is planted, for preparing the optimal path that self-compacting mortar is process scrap glass waste.
(4), during preparing high additive scrap glass powder self-compacting mortar, anhydrous sulphite and lithium salts inhibitor are added,
High additive scrap glass powder self-compacting mortar early-age shrinkage is not only compensate for, and inhibits high additive scrap glass self-compaction sand
Long-term alkali_silica reaction expansion is starched, high additive scrap glass self-compacting mortar mechanical property, volume stability and anti-corruption is improve
Erosion environmental attack ability, expands scrap glass powder self-compacting mortar use range.
Description of the drawings
Fig. 1：Prepare the flow chart with good volume stability high additive scrap glass powder self-compacting mortar.
Fig. 2：FSCM, GSCM, Li-GSCM self-compacting mortar fluidity changes over figure.
Fig. 3：FSCM, GSCM, Li-GSCM self-compacting mortar comprcssive strength figure.
Fig. 4：FSCM, GSCM, Li-GSCM self-compacting mortar rupture strength figure.
Fig. 5：FSCM, GSCM, Li-GSCM self-compacting mortar water absorption rate figure.
Fig. 6：FSCM, GSCM, Li-GSCM self-compacting mortar drying shrinkage value figure.
Fig. 7：FSCM, GSCM, Li-GSCM self-compacting mortar alkali_silica reaction swell value figure.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
One cubic metre of high additive scrap glass powder self-compaction with good volume stability is prepared using the art of this patent
Mortar, and with do not fill under identical match ratio anhydrous sulphite, the scrap glass self-compacting mortar of lithium salts and admixture fine coal
The self-compacting mortar sample performance of ash is contrasted.
1. the preparation of levigate scrap glass powder
Discarded white glass carafe is carried out sorting, cleans, dries, after pulverization process, scrap glass granule passes through 5mm
Square hole screen, goes the removal of impurity with scrap glass granule in irregular shape.By scrap glass sand be put into volume in 10L ball mill with
40 revs/min of speed ball millings 40 minutes, sealing after levigate scrap glass powder are placed 48 hours, and laser particle analyzer measures levigate discarded
Glass dust average particle size particle size is 14.878um.
2. the preparation of self-compacting mortar
2.1. self-compacting mortar match ratio
To prepare mortar 28d intensity up to the high-strength self-compacting mortars of M40 of more than 40MPa as target.Using Chinese cement factory P
II grade of 42.5 ordinary portland cement, Nanjing Huaneng Group power plant one-level flyash.Fine aggregate is natural river sand, fine aggregate modulus of fineness 2.46.
High efficiency water reducing agent is Jiangsu architecture science academy's PCA polycarboxylate water-reducers.Mixing water is drinking water.
Mortar mix ratio embodiment 1
When in the mixing water needed for anhydrous sulphite is added to, described anhydrous sulphite accounts for Binder Materials weight
0.7%, and after anhydrous sulphite is dissolved completely in mixing water, adjusts solution ph and control in 9-10.Mortar mix
It is sand than (mass ratio)：Binder Materials (cement+levigate scrap glass powder)：Mixing water=1.9：1：0.35, levigate scrap glass
Powder replaces 50% cement, and high efficiency water reducing agent PCA and Li are added in mortar2CO3, high efficiency water reducing agent consumption is Binder Materials quality
2.3%, Li2CO3Consumption for Binder Materials quality 0.08%.It is prepared into and has filled anhydrous sodium sulfite and Li2CO3It is useless
Abandon glass self-compacting mortar (Li-GSCM).
Mortar mix ratio embodiment 2
When in the mixing water needed for anhydrous sulphite is added to, described anhydrous sulphite accounts for Binder Materials weight
0.8%, and after anhydrous sulphite is dissolved completely in mixing water, adjusts solution ph and control in 9-10.Mortar mix
It is sand than (mass ratio)：Binder Materials (cement+levigate scrap glass powder)：Mixing water=2.1：1：0.45.Levigate scrap glass
Powder replaces 45% cement, and high efficiency water reducing agent PCA and Li are added in mortar2CO3, high efficiency water reducing agent consumption is Binder Materials quality
2.8%, Li2CO3Consumption for Binder Materials quality 0.12%.It is prepared into and has filled anhydrous sodium sulfite and Li2CO3It is useless
Abandon glass self-compacting mortar (Li-GSCM).
Mortar mix ratio embodiment 3
When in the mixing water needed for anhydrous sulphite is added to, described anhydrous sulphite accounts for Binder Materials weight
0.8%, and after anhydrous sulphite is dissolved completely in mixing water, adjusts solution ph and control in 9-10.Mortar mix
It is sand than (mass ratio)：Binder Materials (cement+levigate scrap glass powder)：Mixing water=2：1：0.4.
One cubic metre of self-compacting mortar needs Binder Materials 706kg/m3, 40% cement of levigate scrap glass powder replacement, sand
1412kg/m3, mixing water is 282.4kg/m3, and high efficiency water reducing agent PCA and Li are added in mortar2CO3, high efficiency water reducing agent use
Measure 2.6%, the Li for Binder Materials quality2CO3Consumption for Binder Materials quality 0.1%.It is prepared into and has filled anhydrous sulfurous acid
Sodium and Li2CO3Scrap glass self-compacting mortar (Li-GSCM).
With embodiment 3 as preferred version, not fill anhydrous sodium sulfite, Li2CO3Scrap glass self-compacting mortar
(GSCM) and flyash self-compacting mortar sample (FSCM) sample as a comparison, embodiment 3 and control sample are carried out into contrast test, respectively
Group self-compacting mortar sample fluidity is controlled in 250 ± 10mm, and the high-strength self-compacting mortar match ratio of three groups of M40 is shown in Table 1.
The high-strength self-compacting mortar match ratios of 1. M40 of table
2.2. the preparation of self-compacting mortar and maintenance
By 400-450kg cement, 250-300kg is levigate scrap glass powder, 1410-1415kg fluvial sand, 0.70-0.71kg
Li2CO3It is put into and mixes 1-2 minute with 30 revs/min of mixing speeds equipped with agitator.Then by 5.5-5.7kg anhydrous sulfurous acid
Salt is dissolved completely in the mixing water of 280-285kg.The polycarboxylate water-reducer for mixing and stirring aqueous solution and 28-30kg is added to into container
In, continue stirring 2 minutes under 30 revs/min of mixing speeds, mortar slurry to be avoided in container bottom lamination, need to use spades
Manual stirring 1-2 time is carried out to mortar slurry, mortar slurry is finally accelerated under 60 revs/min of mixing speed 2 points of mix
Clock.Take and carry out the detection of mortar initial flow degree.
Then Li-GSCM self-compacting mortar slurries are newly mixed in part and is poured into 12 pieces of examinations of preparation in tri- gang moulds of 40mm × 40mm × 160mm
Sample, carries out 3,7,28,90d comprcssive strength, rupture strength detection, and preparing 12 pieces of samples carries out the detection of 3,7,28,90d water absorption rates.
Other are newly mixed Li-GSCM self-compacting mortar slurries to be poured in tri- gang moulds of 25mm × 25mm × 285mm, 6 pieces of samples is prepared, is entered
The drying shrinkage value of row different larval instar self-compacting mortar, the detection of alkali_silica reaction swell value.Will dress Li-GSCM self-compactions after this
The wet gunnysack of use of mortar die trial is covered, and, after 24 hours, sample is by from die trial to place (25 DEG C of temperature, humidity 55-65%) indoors
Temperature is removed and is placed on for 20 DEG C, humidity is conserved until testing age for 90 ± 5% fog room.In the same terms
Under, GSCM, FSCM self-compacting mortar of equal number is prepared, contrast experiment is carried out.
3. the performance of self-compacting mortar
3.1. fly ash self-compacting mortar and two kinds of self-compacting mortar fluidity retentivities of levigate scrap glass powder are mixed
Performance measurement result is shown in that Fig. 2 .FSCM, GSCM, Li-GSCM self-compacting mortar fluidities are changed over.
3.2. fly ash self-compacting mortar and two kinds of self-compacting mortar comprcssive strength of levigate scrap glass powder are mixed
Performance measurement result is shown in Fig. 3 .FSCM, GSCM, Li-GSCM self-compacting mortar comprcssive strength.
3.3. fly ash self-compacting mortar and two kinds of self-compacting mortar rupture strengths of levigate scrap glass powder are mixed
Performance measurement result is shown in Fig. 4 .FSCM, GSCM, Li-GSCM self-compacting mortar rupture strengths.
3.4. fly ash self-compacting mortar and two kinds of self-compacting mortar water absorption rates of levigate scrap glass powder are mixed
Performance measurement result is shown in Fig. 5 .FSCM, GSCM, Li-GSCM self-compacting mortar water absorption rates.
3.5. fly ash self-compacting mortar and two kinds of self-compacting mortar drying shrinkage values of levigate scrap glass powder are mixed
Performance measurement result is shown in Fig. 6 .FSCM, GSCM, Li-GSCM self-compacting mortar drying shrinkage values.
3.6. fly ash self-compacting mortar is swollen with two kinds of self-compacting mortar alkali_silica reactions for mixing levigate scrap glass powder
Swollen value
Performance measurement result is shown in Fig. 7 .FSCM, GSCM, Li-GSCM self-compacting mortar alkali_silica reaction swell values.
The above, is only presently preferred embodiments of the present invention, not makees any pro forma restriction to the present invention, any ripe
Professional and technical personnel is known, it is in the range of without departing from technical solution of the present invention, according to the technical spirit of the present invention, real to more than
Apply any simple modification, equivalent that example made and improve etc., still fall within technical solution of the present invention protection domain it
It is interior.
Claims (6)
1. a kind of preparation method of the high additive scrap glass powder self-compacting mortar with good volume stability, its feature exist
In：Comprise the following steps：
(1) scrap glass pretreatment：Including sorting, clean, crushing, ball milling；
(2) anhydrous sulphite is added in mixing water, and adjusts pH value：Mixing and stirring needed for anhydrous sulphite is added to
When in water, described anhydrous sulphite accounts for the 0.6-0.8% of Binder Materials weight, and is dissolved completely in anhydrous sulphite
After in mixing water, adjust solution ph and control in 9-10；
(3) cement, levigate scrap glass powder, fine aggregate, lithium salts are put in the container equipped with agitator, after adding above-mentioned process
Mixing water, stirring be mixed to get slurry：Cement, levigate scrap glass powder, fine aggregate, lithium salts are put into into the appearance equipped with agitator
In device, in adding mixing water, preparation is concretely comprised the following steps：The cement of 40-50% is replaced to form Binder Materials with levigate discarded glass powder,
By sand：Binder Materials：Mixing water is with (1.9～2.1)：1：The mass ratio of (0.35～0.45) is mixed to form mortar, and to mortar
Middle addition high efficiency water reducing agent and lithium salts, high efficiency water reducing agent consumption for Binder Materials quality 2.3～2.8%, lithium salts consumption are glue
The 0.08-0.12% of gel material quality；
(4) initial flow degree detection is carried out to gained slurry；
(5) mortar is poured and is conserved.
2. the preparation method of high additive scrap glass powder self-compacting mortar as claimed in claim 1, it is characterised in that：Described
Scrap glass pretreatment includes：After sorting, clean, drying, pulverization process is carried out to scrap glass, the scrap glass mistake after process
Sieve, goes the removal of impurity with scrap glass granule in irregular shape；Scrap glass granule is put into into grinding in ball grinder, obtains levigate
Scrap glass powder, after levigate scrap glass powder places a period of time, using laser particle analyzer detect levigate scrap glass powder
Particle size.
3. the preparation method of high additive scrap glass powder self-compacting mortar as claimed in claim 2, it is characterised in that：To process
Scrap glass afterwards passes through 5mm square hole screens；Scrap glass granule is put into into grinding in ball grinder 30-60 minute；Levigate discarded glass
After glass powder is placed 48 hours, the particle size of levigate scrap glass powder is detected using laser particle analyzer, control levigate discarded glass
Glass powder average particle size is less than 15um.
4. the preparation method of high additive scrap glass powder self-compacting mortar as claimed in claim 1, it is characterised in that：Step
(3) in, by cement, levigate scrap glass powder, fine aggregate, lithium salts by being put into after the container equipped with agitator, in certain stirring speed
The lower mixed for several minutes of degree, adds the mix aqueous solution containing sulphite and high efficiency water reducing agent, continues stirring several minutes, using ferrum
Shovel carries out manual stirring 1-2 time to mortar slurry, finally by mortar slurry with mixing speed mix several minutes faster.
5. the preparation method of high additive scrap glass powder self-compacting mortar as claimed in claim 1, it is characterised in that：Step
(4) in, fresh mortar slurry is put in Mortar'S Flowability test prod cast, carries out the initial flow degree inspection of fresh mortar slurry
Survey, control sample mortar is in certain initial flow degree.
6. the preparation method of high additive scrap glass powder self-compacting mortar as claimed in claim 1, it is characterised in that：Step
(5), in, mortar slurry is poured in 40mm × 40mm × 160mm and 25mm × 25mm × 285mm die trials, is covered outside die trial
Wet gunnysack is covered, in 25 DEG C of temperature, the indoor placement of humidity 55-65% 24 hours；Sample is removed from die trial after one day, sample
Temperature is placed on for 20 DEG C, humidity continues maintenance to the age of regulation for 90 ± 5% fog room.
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| CN109534745B (en) * | 2018-11-29 | 2021-02-19 | 金陵科技学院 | Preparation method of low-alkali silicic acid reaction-expanded high-doping-amount waste crushed glass self-compacting concrete |
| CN109503042B (en) * | 2018-12-27 | 2021-11-09 | 金陵科技学院 | Method for preparing environment-friendly inorganic mineral polymer mortar by using solid waste |
| CN110078429A (en) * | 2019-05-20 | 2019-08-02 | 长江三峡技术经济发展有限公司 | A kind of highly doped mountain flour cream mixed mortar |
| CN112159176A (en) * | 2020-09-30 | 2021-01-01 | 湖北工业大学 | Wear-resistant self-leveling cement mortar doped with waste glass and preparation method thereof |
| CN115196917A (en) * | 2022-07-08 | 2022-10-18 | 广州大学 | Waste glass powder-cement cementing material and preparation method thereof |
| CN115710107A (en) * | 2022-11-08 | 2023-02-24 | 襄阳市市政工程设计院有限公司 | Water permeable brick and preparation method thereof |
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| CN101497514B (en) * | 2008-06-05 | 2011-11-30 | 北京联合荣大工程材料有限责任公司 | Low cost cement self-leveling mortar |
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