CN102351456A - Thaumasite form sulfate attack (TSA) inhibitor, preparation method thereof and application thereof - Google Patents
Thaumasite form sulfate attack (TSA) inhibitor, preparation method thereof and application thereof Download PDFInfo
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- CN102351456A CN102351456A CN 201110192758 CN201110192758A CN102351456A CN 102351456 A CN102351456 A CN 102351456A CN 201110192758 CN201110192758 CN 201110192758 CN 201110192758 A CN201110192758 A CN 201110192758A CN 102351456 A CN102351456 A CN 102351456A
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Abstract
The invention discloses a TSA inhibitor, a preparation method thereof and an application thereof. The TSA inhibitor comprises the following components, by weight, 25-45 parts of a barium salt, 15-25 parts of cement clinker, 20-40 parts of an admixture, 15-30 parts of zeolite, and 0.5-2.0 parts of a powdery water reducer. The TSA inhibitor has a multistage long-acting sustained-release characteristic to Ba<2+>, can durably improve the TSA destroy resistance of a cement-based material, and has a certain improvement effect on the workability, the strength, and the endurance of the cement-based material; and the preparation method of the invention has the advantages of simple technology of a used overlying packing technology, high efficiency, and strong adaptability. Experiments prove that the TSA inhibitor of the invention can substantially improve the TSA destroy resistance of the cement-based material, and can durably and effectively prevent the cement-based material from the TSA destroy.
Description
Technical field
The invention belongs to carbon sulphur rankinite type sulphate attack (the Thaumasite form ofsulfate attack in the building material field; TSA) suppressor factor particularly relates to a kind of anti-TSA destructive characteristics of cement-based material, prevention of water cement-based material TSA destructive TSA suppressor factor and preparation method thereof of improving.
Background technology
At present, Wingdale has become one type of important raw and processed materials in the cement in China concrete industry.Yet; When competent vitriol, water and temperature suit (it is generally acknowledged＜15 ℃); The cement-based material of mixing limestone powder or using Wingdale matter to gather materials might suffer the sulphate attack of carbon sulphur rankinite type, and (Thaumasite form of sulfateattack TSA) destroys.TSA is different with traditional ettringite/gypsum model sulphate attack; Carbon sulphur rankinite forms the main bonding component C-S-H gel in the direct destruction cement stone; And make it change mud shape material into; From outward appearance to inner essence come off; Cause cement-based material to lose gelling fully, have a strong impact on the weather resistance of concrete works.Therefore, even adopt sulphate-resistant cement, also can't destroy by prevention of water cement-based material TSA.
Although propose the TSA problem with regard to the people is arranged as far back as nineteen sixty-five, it really for people attention be nearly more than 10 years thing, do not set up effective cement-based material TSA destruction preventive measures at present as yet.CN 200910045612 " a kind of anti-erosion agent for concrete and its production and application " discloses a kind of anti-erosion agent, is made up of following components in weight portions: 0.37～1.25 part of 100 parts of original state superfine fly ash micro-beads, 5～9 parts of water reducers, 30～80 parts of swelling agents, 0.075～0.3 part of air entrapment agent, 25～75 parts of weighting agents and retardant.Adopt the concrete of this anti-erosion agent preparation; The resisting erosion of sulfate ability can improve 5～8 times; The chloride-penetration resistance ability can improve more than 3 times; Under the constant situation of concrete structure environment for use; Can improve 3～4 times of concrete structure work-ing lifes; Yet this anti-erosion agent is mainly used in the traditional ettringite/gypsum model sulphate attack of prevention, the sulphate attack of carbon sulphur rankinite type is destroyed do not have preventive effect.CN 100344569 " wide-spectrum sulfide resistant gelled material and preparation method thereof " discloses a kind of sulfide resistant gelled material; Be made up of following components in weight portions: 3～10 parts of 35～45 parts of cement clinkers, 30～50 parts of blast furnace slags, 10～15 parts of pre-grinding steel-making slag powder and function ingredients, the adding quality of properties-correcting agent accounts for cement clinker, blast furnace slag, pre-grinding steel-making slag powder and function ingredients 0.01～0.02 part.This material can be resisted polytype sulphate attack and destroy (ettringite type, gypsum model, carbon sulphur Calucium Silicate powder type), but it is numerous to invent the starting material that adopt, complicated process of preparation, and transportation cost is higher.There is research data to show; In concrete, mix the anti-TSA performance that can improve cement-based material behind the barium salt to a certain extent; Barium salt directly mixes stirring, but thisly improves effect only short-term (about 6 months) is effective, and barium salt can influence the workability of cement-based material after introducing.Therefore, press for a kind of cement-based material of prevention of water long-term effectively carbon sulphur rankinite type sulphate attack destructive product on the market.
Summary of the invention
The objective of the invention is to overcome shortcoming and defect of the prior art, a kind of anti-TSA destructive characteristics of cement-based material, prevention of water cement-based material carbon sulphur rankinite type sulphate attack destructive suppressor factor long-term effectively of improving is provided.
For solving the problems of the technologies described above; The present invention takes following technical scheme: a kind of carbon sulphur rankinite type sulphate attack suppressor factor; Comprise following components by weight portion: 25～45 parts of barium salts; 15～25 parts of cement clinkers; 20～40 parts of adulterants, 0.5～2.0 part of 15～30 parts in zeolite and powdery water reducer.
In the preparation method of above-mentioned carbon sulphur rankinite type sulphate attack suppressor factor, said barium salt can be bariumchloride, hydrated barta or nitrate of baryta; Wherein, hydrated barta is the technical grade hydrated barta that meets HG/T 2566-2006 standard, and main content is with [Ba (OH)
28H
2O] meter massfraction be not less than 95.0%; Bariumchloride is the technical grade bariumchloride that meets GB/T 1617-2002 standard, and main content is with [Ba (Cl)
22H
2O] meter massfraction be not less than 97.0%; Nitrate of baryta is the technical grade nitrate of baryta that meets GB/T 1613-1993 standard, and main content is with [Ba (NO)
2] meter massfraction be not less than 98.5%.
Said cement clinker can be Portland clinker, does not mix gypsum grinding, Blain specific surface (380 ± 10) m
2/ kg.
Said adulterant can be flyash, slag or metakaolin; Wherein, flyash is the flyash that meets GB/T 1596-2005 standard, Blain specific surface (400 ± 10) m
2/ kg; Slag is the GBFS that meets GB/T 18046-2008 standard, Blain specific surface (500 ± 10) m
2/ kg; Metakaolin is the metakaolin of commercially available low temperature calcination, and fineness is the 1000-1500 order, is preferably 1250 orders.
Said zeolite can be clinoptilolite, and fineness can be the 150-250 order, is preferably 200 orders.
Said powdery water reducer can be powdery water reducers such as polycarboxylic acid series, naphthalene system, anthracene system, fatty family or sulfamate system, and soluble in water, water-reducing rate is greater than 14% (quality percentage composition).
Second purpose of the present invention provides a kind of preparation method of above-mentioned carbon sulphur rankinite type sulphate attack suppressor factor.
The preparation method of carbon sulphur rankinite type sulphate attack suppressor factor provided by the present invention may further comprise the steps:
1) takes by weighing raw material: 25～45 parts of barium salts, 15～25 parts of cement clinkers, 20～40 parts of adulterants, 15～30 parts in zeolite, 0.5～2.0 part of powdery water reducer, water 70-90 part;
2) wet-milling: barium salt, cement clinker, adulterant, zeolite and water are added mix grinding in the ball mill by wet process;
3) oven dry: with step 2) the wet method mix grinding slurry that obtains is put and is dried in the baking oven to constant weight;
4) dry grinding: 98.0～99.5 parts of wet method mix grinding slurry and 0.5～2.0 part of powdery water reducers after the step 3) oven dry is handled are added in the dry method ball mill mix grinding to Blain specific surface (350 ± 10) m
2/ kg obtains carbon sulphur rankinite type sulphate attack suppressor factor.
In the preparation method of above-mentioned carbon sulphur rankinite type sulphate attack suppressor factor, said step 2) addition of water is preferably 80 parts in; The model of ball mill by wet process can be Φ 1.2 * 2.4m, and the mix grinding time can be (30 ± 2) minute.
Oven temperature in the said step 3) can be (105 ± 5) ℃.
The invention provides a kind of carbon sulphur rankinite type sulphate attack suppressor factor and preparation method thereof.Carbon sulphur rankinite type sulphate attack suppressor factor of the present invention has multilayer stack package structure, and integument that is formed by the cement clinker hydrated product and zeolite adsorption layer make Ba to the barium salt parcel that superposes
2+Has multistage long-acting slow-release characteristic.Experiment showed, that carbon sulphur rankinite type sulphate attack suppressor factor of the present invention can significantly improve the anti-TSA destructive characteristics of cement-based material, and prevention of water cement-based material carbon sulphur rankinite type sulphate attack long-term effectively destroys.The present invention has following advantage with respect to prior art:
(1) the TSA suppressor factor has Ba
2+Multistage long-acting slow-release characteristic can improve the anti-TSA destructive characteristics of cement-based material for a long time;
(2) the TSA suppressor factor is to cement-based material workability, intensity and the weather resistance tool effect that has some improvement;
(3) TSA suppressor factor volume low (1～4%), and utilize industrial waste in a large number, have better economic property;
(4) used stack technique for packing technology is simple among the preparation method, and efficient is high, and adaptability is strong, is suitable for large-scale industrial production, has a extensive future.
Below in conjunction with specific embodiment the present invention is explained further details.
Description of drawings
The stack package structure synoptic diagram that Fig. 1 suppresses for carbon sulphur rankinite type sulphate attack of the present invention
Fig. 2 is preparation technology's schematic flow sheet of carbon sulphur rankinite type sulphate attack suppressor factor of the present invention
Embodiment
The shortcoming that is to overcome prior art is with not enough, solves the difficult problem that traditional single barium salt action time is short, effect is not good enough, the invention provides a kind of cement-based material of prevention of water long-term effectively carbon sulphur rankinite type sulphate attack destructive suppressor factor.
Carbon sulphur rankinite type sulphate attack suppressor factor provided by the invention comprises following components by weight portion: 25～45 parts of barium salts, 15～25 parts of cement clinkers, 20～40 parts of adulterants, 0.5～2.0 part of 15～30 parts in zeolite and powdery water reducer.
In the preparation method of above-mentioned carbon sulphur rankinite type sulphate attack suppressor factor, said barium salt can be bariumchloride, hydrated barta or nitrate of baryta; Wherein, hydrated barta is the technical grade hydrated barta that meets HG/T 2566-2006 standard, and main content is with [Ba (OH)
28H
2O] meter massfraction be not less than 95.0%; Bariumchloride is the technical grade bariumchloride that meets GB/T 1617-2002 standard, and main content is with [Ba (Cl)
22H
2O] meter massfraction be not less than 97.0%; Nitrate of baryta is the technical grade nitrate of baryta that meets GB/T 1613-1993 standard, and main content is with [Ba (NO)
2] meter massfraction be not less than 98.5%.
Said cement clinker can be Portland clinker, does not mix gypsum grinding, Blain specific surface (380 ± 10) m
2/ kg.
Said adulterant can be flyash, slag or metakaolin; Wherein, flyash is the flyash that meets GB/T 1596-2005 standard, Blain specific surface (400 ± 10) m
2/ kg; Slag is the GBFS that meets GB/T 18046-2008 standard, Blain specific surface (500 ± 10) m
2/ kg; Metakaolin is the metakaolin of commercially available low temperature calcination, and fineness is the 1000-1500 order, is preferably 1250 orders.
Said zeolite can be clinoptilolite, and fineness can be the 150-250 order, is preferably 200 orders.
Said powdery water reducer can be commercially available polycarboxylic acid series (like gram science and technology (Suzhou) company limited product not), naphthalene system (opening up great chemical industry technology company limited product like Zhengzhou), anthracene system's (like Tianjin flying dragon Concrete Additive company limited product), fatty family (like rainbow tall building, Qingdao macromolecular material company limited product) or sulfamate system powdery water reducers such as (like the prosperous grand building materials in Shouguang, Shandong company limited products); Soluble in water, water-reducing rate is greater than 14% (quality percentage composition).
The stack parcel microtexture of above-mentioned carbon sulphur rankinite type sulphate attack (TSA) suppressor factor as shown in Figure 1; In the unit cell of each suppressor factor; Form an integument by hydrated product (cement clinker and part adulterant are participated in hydration reaction); Barium salt (bariumchloride, hydrated barta or nitrate of baryta) is formed the first layer parcel, in this integument and periphery also adhere to have adsorbed and be detained Ba
2+Zeolite (and other adulterant), the hydrated product that continues to form in the hydration process forms other one deck and multilayer integument, like this through multilayered structure to Ba
2+The parcel that superposes makes Ba
2+Has multistage long-acting slow-release characteristic.Numerous same formations but have the single cell structure of different-grain diameter grating to flock together to form suppressor factor product of the present invention, the principle of work of its anti-TSA in cement-based material (like concrete) is:
(1) physical solidification, it relies on the impermeability that improves cement-based material to stop extraneous SO
4 2-Scattering and permeating.The TSA suppressor factor is evenly distributed on cement-based material inside; Powdery water reducer in the suppressor factor is introduced the some amount uniform distribution, is stablized and the micro-bubble of sealing in the cement-based material whipping process; Cut off tortuosity, the blocking-up capillary porosity duct of pore continuity, increase hole; Improve the impermeability of matrix, increase SO
4 2-The difficulty of scattering and permeating reduces the SO that participates in sulphate attack
4 2-Effective quantity, thus the anti-TSA performance of cement-based material improved.
(2) chemosetting is defence line, second road, on the one hand, and the Ba2+ of the multistage long-acting slow-release of TSA suppressor factor and the SO that penetrates into
4 2-Reaction forms BaSO
4, reduce SO
4 2-Concentration and refinement pore structure, thus the low temperature sulphate attack slowed down; On the other hand, the Ba of multistage long-acting slow-release
2+Can decompose ettringite, carbon sulphur rankinite, and be converted into more stable thing phase.
(3) above-mentioned physical solidification, chemosetting additive effect, thus significantly improve the anti-TSA destructiveness of cement-based material.
(4) Ba
2+That at first discharge is the Ba in the zeolite absorption
2+, the Ba of part in the integument in suffering extraneous sulphate attack process
2+Further discharge,, can improve the anti-TSA destructive characteristics of cement-based material for a long time through this multistage long-acting slow-release.
The present invention also provides a kind of preparation method of above-mentioned carbon sulphur rankinite type sulphate attack suppressor factor, and preparing method's schema can may further comprise the steps as shown in Figure 2:
1) takes by weighing raw material: 25～45 parts of barium salts, 15～25 parts of cement clinkers, 20～40 parts of adulterants, 15～30 parts in zeolite, 0.5～2.0 part of powdery water reducer, water 70-90 part;
2) wet-milling: barium salt, cement clinker, adulterant, zeolite and water are added mix grinding in the ball mill by wet process;
3) oven dry: with step 2) the wet method mix grinding slurry that obtains is put and is dried in the baking oven to constant weight;
4) dry grinding: 98.0～99.5 parts of wet method mix grinding slurry and 0.5～2.0 part of powdery water reducers after the step 3) oven dry is handled are added in the dry method ball mill mix grinding to Blain specific surface (350 ± 10) m
2/ kg obtains carbon sulphur rankinite type sulphate attack suppressor factor.
In the preparation method of above-mentioned carbon sulphur rankinite type sulphate attack suppressor factor, said step 2) addition of water is preferably 80 parts in; The model of ball mill by wet process can be Φ 1.2 * 2.4m, and the mix grinding time is (30 ± 2) minute.
Oven temperature in the said step 3) can be (105 ± 5) ℃.
Above-mentioned carbon sulphur rankinite type sulphate attack suppressor factor preparing method's preparation principle is:
(1) in the wet-milling process, the vestibule structure of zeolite uniqueness is to Ba
2+Produce adsorption, with part Ba
2+Absorption is trapped in its hole, plays certain slow releasing function.C in the cement clinker
3S, C
2S, C
3A and C
4The AF aquation forms C-S-H gel, Ca (OH)
2Reach hydrated products (the part adulterant is also participated in hydration reaction) such as drated calcium aluminate, these hydrated products can adsorb, be wrapped in barium salt, zeolite and adulterant (like the metakaolin) surface that is not adsorbed, and form integument.Under the effect of ball mill mechanical force and chemical, this integument breaks, and barium salt etc. expose again.Cement clinker continues aquation, and hydrated product forms integument on the barium salt surface again.Under grog aquation and mechanical force and chemical effect, integument constantly breaks, repairs, and finally forms the distinctive multilayer stack of TSA suppressor factor package structure (with reference to figure 1 signal).The adulterant specific surface area is big, tap density is little, has better dispersion, diluting effect, helps to improve the long-term effect of suppressor factor.
(2) in the drying course, grog hydrated product Ca (OH)
2Can form secondary hydration product C-S-H gel with zeolite, adulterant reaction, further strengthen stack parcel effect.The stack package structure that the TSA suppressor factor is unique has guaranteed Ba
2+Multistage long-acting slow-release.
(3) the powdery water reducer that mixes in the dry method grinding process is dispersed in the suppressor factor, can further improve the restraining effect of TSA suppressor factor.
Embodiment provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technical scheme of the present invention.
Method therefor is ordinary method if no special instructions among the following embodiment.
Embodiment 1-6, preparation carbon sulphur rankinite type sulphate attack suppressor factor
The preparation raw material of embodiment of the invention 1-6 carbon sulphur rankinite type sulphate attack suppressor factor is as shown in table 1:
The preparation raw material of table 1 embodiment 1-6 carbon sulphur rankinite type sulphate attack suppressor factor
Annotate: " part " refers to weight part, and unit is kilogram or gram, and mete-wand can be set by actual scale, such as 1 part=100 grams.
The preparation method of embodiment 1-6 carbon sulphur rankinite type sulphate attack suppressor factor may further comprise the steps:
1) takes by weighing raw material by prescription shown in the table 1;
2) wet-milling: barium salt, cement clinker, adulterant, zeolite and water are added ball mill by wet process, and (model is mix grindings (30 ± 2) minute in the Φ 1.2 * 2.4m);
3) oven dry: with step 2) the wet method mix grinding slurry that obtains is put in (105 ± 5) ℃ baking oven and is dried to constant weight;
4) dry grinding: (model is in the Φ 1.2 * 4.5m), mix grinding to Blain specific surface (350 ± 10) m with powdery water reducer adding dry method ball mill with 98.0～99.5 parts of wet method mix grinding slurries after step 3) oven dry is handled
2/ kg obtains carbon sulphur rankinite type sulphate attack suppressor factor.
The detection of embodiment 7, carbon sulphur rankinite type sulphate attack suppressor factor
Detect the prevention TSA execution and the action time of carbon sulphur rankinite type sulphate attack suppressor factor of the present invention; Method is: to cement-lime stone flour composite gelled material (70 parts of cement+30 part limestone powders; Water cement ratio 0.40) mixes the TSA suppressor factor that 2.0%～4.0% (quality percentage composition) embodiment 1-6 prepares respectively; Be contrast simultaneously, place (5 ± 2) ℃, 5%MgSO then with the cement-lime stone flour composite gelled material that mixes 1.5% (quality percentage composition) hydrated barta
4After 1 year, detect in the solution.Test item comprises the examination of sample appearance and to MgSO
4The detection of carbon sulphur rankinite content in the solution (adopting the XRD/Rietveld method).The result sees table 2:
Table 2: the anti-carbon sulphur of cement-lime stone flour composite gelled material rankinite type sulphate attack detected result
The result shows; The sample appearance that is mixed with carbon sulphur rankinite type sulphate attack suppressor factor of the present invention is complete; Only peeling appears in the edge; Do not form canescence mud shape material; Do not have the TSA destructive characteristics; Carbon sulphur rankinite growing amount illustrates that suppressor factor of the present invention significantly improves the anti-TSA destructive characteristics of cement-based material in 1.2%; Peeling off appears in corner angle and the surface that is mixed with the cement-lime stone flour composite gelled material of hydrated barta, softening and protuberance phenomenon; And there are a large amount of canescence mud shape materials to form; Have typical TSA destructive characteristics, have 10.8% carbon sulphur rankinite to form in the corrosion product.In addition, the volume of suppressor factor of the present invention antagonism TSA has certain influence, and high volume effect is more excellent, and low-dosage has the better inhibited effect equally.Detected result shows that carbon sulphur rankinite type sulphate attack suppressor factor of the present invention can significantly improve the anti-TSA destructive characteristics of cement-based material, and accelerated test also shows because the Ba in the preparation
2+Have multistage long-acting slow-release characteristic, can be for a long time (according to sulfate corrosion environment grade 20 years to 60 years) effectively prevent TSA and destroy.
Claims (10)
1. carbon sulphur rankinite type sulphate attack suppressor factor; Comprise that following components by weight portion is prepared from through wet-milling, oven dry and dry grinding: 25～45 parts of barium salts; 15～25 parts of cement clinkers, 20～40 parts of adulterants, 0.5～2.0 part of 15～30 parts in zeolite and powdery water reducer.
2. carbon sulphur rankinite type sulphate attack suppressor factor according to claim 1, it is characterized in that: said barium salt is bariumchloride, hydrated barta or nitrate of baryta.
3. carbon sulphur rankinite type sulphate attack suppressor factor according to claim 1, it is characterized in that: said cement clinker is a Portland clinker, does not mix gypsum grinding, Blain specific surface (380 ± 10) m
2/ kg.
4. carbon sulphur rankinite type sulphate attack suppressor factor according to claim 1, it is characterized in that: said adulterant is flyash, slag or metakaolin.
5. carbon sulphur rankinite type sulphate attack suppressor factor according to claim 1, it is characterized in that: said zeolite is a clinoptilolite, and fineness is the 150-250 order, is preferably 200 orders.
6. carbon sulphur rankinite type sulphate attack suppressor factor according to claim 1; It is characterized in that: said powdery water reducer is that polycarboxylic acid series, naphthalene system, anthracene system, fatty family or sulfamate are the powdery water reducer; Soluble in water, water-reducing rate is greater than 14% (quality percentage composition).
7. according to the arbitrary described carbon sulphur rankinite type sulphate attack suppressor factor of claim 1 to 6, it is characterized in that: the Ba in the barium salt
2+Part absorption is trapped in the zeolite pores, and another part is wrapped to form the suppressor factor single cell structure by the stack of the hydrated product multilayer of cement clinker, is assembled forming Ba by the single cell structure of numerous different-grain diameter gratings
2+The suppressor factor product of multistage long-acting slow-release.
8. preparation method who prepares each described carbon sulphur rankinite type sulphate attack suppressor factor of claim 1-7 may further comprise the steps:
1) wet-milling: the barium salt that will take by weighing according to quantity, cement clinker, adulterant, zeolite and water 70-90 part add mix grinding in the ball mill by wet process;
2) oven dry: the wet method mix grinding slurry that step 1) is obtained is put and is dried to constant weight;
3) dry grinding: will add in the dry method ball mill mix grinding to Blain specific surface (350 ± 10) m through wet method mix grinding slurry after the step 3) oven dry is handled and powdery water reducer
2/ kg obtains carbon sulphur rankinite type sulphate attack suppressor factor.
9. carbon sulphur rankinite type sulphate attack suppressor factor according to claim 8, it is characterized in that: wet-milling is that the ball mill by wet process of Φ 1.2 * 2.4m carries out with the model, the mix grinding time is (30 ± 2) minute.
10. it is characterized in that according to Claim 8 or 9 described carbon sulphur rankinite type sulphate attack suppressor factor: the bake out temperature said step 2) is (105 ± 5) ℃.
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| CN106542762A (en) * | 2016-09-30 | 2017-03-29 | 湖北工业大学 | Efficient Sulfate corrosion-resistant concrete additive and preparation method thereof |
| CN107324681A (en) * | 2017-06-30 | 2017-11-07 | 中建西部建设西南有限公司 | A kind of thaumasite type sulphate corrosion inhibitor and preparation method |
| CN110255951A (en) * | 2019-04-11 | 2019-09-20 | 武汉理工大学 | A kind of barium base chloride ion curing agent and its preparation method and application |
| CN112341031A (en) * | 2020-11-12 | 2021-02-09 | 中建西部建设西南有限公司 | Modified limestone powder mineral admixture and preparation method thereof |
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| CN106542762B (en) * | 2016-09-30 | 2018-01-30 | 湖北工业大学 | Efficient Sulfate corrosion-resistant concrete additive and preparation method thereof |
| CN107324681A (en) * | 2017-06-30 | 2017-11-07 | 中建西部建设西南有限公司 | A kind of thaumasite type sulphate corrosion inhibitor and preparation method |
| CN107324681B (en) * | 2017-06-30 | 2019-10-25 | 中建西部建设西南有限公司 | A kind of thaumasite type sulphate corrosion inhibitor and preparation method |
| CN110255951A (en) * | 2019-04-11 | 2019-09-20 | 武汉理工大学 | A kind of barium base chloride ion curing agent and its preparation method and application |
| CN110255951B (en) * | 2019-04-11 | 2021-11-02 | 武汉理工大学 | Barium-based chloride ion curing agent and preparation method and application thereof |
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