CN103641354A - Environment-friendly concrete superplasticizer and preparation method thereof - Google Patents
Environment-friendly concrete superplasticizer and preparation method thereof Download PDFInfo
- Publication number
- CN103641354A CN103641354A CN201310632789.8A CN201310632789A CN103641354A CN 103641354 A CN103641354 A CN 103641354A CN 201310632789 A CN201310632789 A CN 201310632789A CN 103641354 A CN103641354 A CN 103641354A
- Authority
- CN
- China
- Prior art keywords
- environment
- reducing agent
- waste liquid
- concrete
- water reducing
- 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
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000008030 superplasticizer Substances 0.000 title abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 36
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 12
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000002699 waste material Substances 0.000 claims abstract description 7
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 claims abstract description 6
- 235000010262 sodium metabisulphite Nutrition 0.000 claims abstract description 6
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims abstract description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 9
- PJKVFARRVXDXAD-UHFFFAOYSA-N 2-naphthaldehyde Chemical compound C1=CC=CC2=CC(C=O)=CC=C21 PJKVFARRVXDXAD-UHFFFAOYSA-N 0.000 claims description 8
- 239000003295 industrial effluent Substances 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims 1
- 239000002351 wastewater Substances 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 125000001931 aliphatic group Chemical group 0.000 abstract description 7
- 231100000086 high toxicity Toxicity 0.000 abstract description 3
- JWAZRIHNYRIHIV-UHFFFAOYSA-N 2-naphthol Chemical compound C1=CC=CC2=CC(O)=CC=C21 JWAZRIHNYRIHIV-UHFFFAOYSA-N 0.000 abstract 8
- 229950011260 betanaphthol Drugs 0.000 abstract 4
- 239000002440 industrial waste Substances 0.000 abstract 4
- 229940001584 sodium metabisulfite Drugs 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 10
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 6
- 239000002994 raw material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- CRVVHBFLWWQMPT-UHFFFAOYSA-N naphthalene-1-sulfonic acid;sodium Chemical compound [Na].C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 CRVVHBFLWWQMPT-UHFFFAOYSA-N 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical group O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- YWPOLRBWRRKLMW-UHFFFAOYSA-N sodium;naphthalene-2-sulfonic acid Chemical compound [Na+].C1=CC=CC2=CC(S(=O)(=O)O)=CC=C21 YWPOLRBWRRKLMW-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an environment-friendly concrete superplasticizer and a preparation method thereof. The aliphatic superplasticizer which is produced from 2-naphthol and p-methylphenol production industrial waste liquid mainly consists of acetone, formaldehyde, industrial waste liquid and sodium metabisulfite, wherein the waste liquid is industrial waste liquid generated in 2-naphthol and p-methylphenol production. The aliphatic superplasticizer, which is produced from 2-naphthol and p-methylphenol production industrial waste liquid, can reduce production cost of superplasticizer, and simultaneously reduce wastewater disposal cost and improve quality and performance of concrete water reducing agent; and high-toxicity wastewater is effectively treated, and zero emission of 2-naphthol and p-methylphenol production wastewater is realized.
Description
Technical field
The present invention relates to a kind of concrete admixture material, be specifically related to a kind of cement water reducing agent, belong to concrete production technical field.
Background technology
In concrete, add appropriate admixture, can improve concrete quality, improve concrete performance, reduce the reinforcement of concrete water yield, save cement, reduce costs accelerating construction progress.Along with the progress of technology, admixture has become the 5th kind of indispensable material except cement, coarse-fine aggregate, adulterant and water, and mixing admixture is important measures of concrete mix optimization design and raising concrete durability.Therefore the < < concrete construction standard > > (DL/T5144-2001) of new revision emphasizes, must the appropriate admixture of admixture in concrete for hydraulic structure.
In the preparation process of concrete, mortar and clean slurry, mix and a small amount of can to concrete, mortar or clean slurry, change a kind of product of performance, be called concrete admixture.High efficiency water reducing agent is a kind of admixture that improves mixing concrete thing rheological property.
Water reducer claims again fluidizer or dispersion agent, adds appropriate water reducer while mixing and stirring concrete, can make cement granules be uniformly dispersed, and the moisture of cement granules parcel is discharged simultaneously, thereby can obviously reduce the reinforcement of concrete water yield.The effect of water reducer is in the situation that keeping concrete mix constant, improves its workability; Or reduce water consumption in the situation that keeping workability constant, improve concrete strength; Or reduce cement consumption when keeping intensity constant, and save cement, reduce costs.Meanwhile, add water reducer after concrete more evenly closely knit, improve series of physical chemical property, as impermeability, frost resistance, resistance to fouling etc., improved concrete weather resistance.
In recent years, along with the fast development of China's infrastructure construction, the operation technique of China's concrete admixture improves day by day, and traditional water reducer water-reducing rate is not high, is generally 5%～10%.Along with the raising to concrete for hydraulic structure specification of quality, also more and more higher to the specification of quality of water reducer.Therefore how to reduce the production cost of water reducer, the quality and the performance that improve water reducer are the problems that concrete admixture industry is being studied always.
Summary of the invention
In order to reduce the production cost of water reducer, improve quality and the performance of water reducer, the invention provides a kind of environment-friendly type concrete high efficiency water reducing agent preparation method, utilize the industrial effluent of producing beta naphthal, p-methyl phenol to produce aliphatic high-efficiency water reducing agent.
Technical scheme of the present invention is as follows:
An environment-friendly type concrete high efficiency water reducing agent, is comprised of the mass percent of following composition:
Described waste liquid is for producing the industrial effluent of beta naphthal, p-methyl phenol generation.
Preferred technical scheme of the present invention, is comprised of the mass percent of following composition:
Environment-friendly type concrete high efficiency water reducing agent of the present invention, its preparation methods steps is as follows:
(1) waste liquid, water, Sodium Pyrosulfite are placed in the reactor with thermometer, condensing works, agitator, airtight;
(2) when 25 ℃ of temperature, be added dropwise to acetone, hybrid reaction 30 minutes;
(3) in reactor, drip formaldehyde, first paragraph drips 1/3rd of formaldehyde consumption, and time for adding is controlled at 50-70 minute, controls temperature and at 50-55 ℃, reacts 30 minutes;
(4) continue to drip residue three/dicarbaldehyde, control time for adding 120-150 minute, be warmed up at 95-110 ℃ and react 150 minutes;
(5) cool to room temperature, both obtained environment-friendly type concrete high efficiency water reducing agent of the present invention.
Beneficial effect: the present invention utilizes and produces beta naphthal, p-methyl phenol waste water industrial effluent is produced aliphatic high-efficiency water reducing agent, reduced the production cost of aliphatic high-efficiency water reducing agent, reduced cost for wastewater treatment simultaneously, quality and the performance of cement water reducing agent have been improved, effectively process high toxicity waste water, reached the zero release of beta naphthal, p-methyl phenol factory effluent.
Embodiment
Beta naphthal and p-methyl phenol will pass through naphthalene sulfonation aborning, hydrolysis-, blow naphthalene, the processes such as neutralization, technological process is many, long flow path, quantity of three wastes is large, in the waste water producing with mother liquor and washing particularly, COD value is up to 55000 mg/litre left and right, belong to high toxicity waste water, 1 ton of beta naphthal of every production, the waste water of 8 cubic metres of left and right will be produced, because waste water is brine waste, industrial treatment is more difficult, wherein main organic owner to want composition be that sodiumβ-naphthalenesulfonate accounts for 45-55%, a small amount of α-naphthalenesulfonicacid sodium accounts for 4-19%, refined naphthalene and other organic impurity of trace account for 0-1.0%, inorganics main component is that S-WAT accounts for 15-20%, sodium sulfate accounts for 7-8%., but in waste water, composition can utilize production aliphatic high-efficiency water reducing agent for building concrete, and the utilization of waste water can significantly reduce water reducer production cost, disposes simply and effectively again trade effluent, significant.
With experiment, environment-friendly type concrete high efficiency water reducing agent of the present invention and preparation method thereof is elaborated by the following examples, the present invention is not restricted to the description to following examples.
Embodiment mono-raw materials quality per-cent is:
Concrete preparation process is as follows:
Water, waste water, Sodium Pyrosulfite are added in the reactor that thermometer, condensing works, whipping appts are housed, at 25 ℃, drip acetone reaction 30 minutes, then the formaldehyde that starts to drip 1/3 add-on drips and drips off for 62 minutes, 52 ℃ of reactions of temperature 30 minutes, the formaldehyde that continues all the other 2/3 add-ons of dropping dropwised at 135 minutes, raised the temperature to 95 ℃, insulation reaction 150 minutes, cool to room temperature, obtain environment-friendly type concrete high efficiency water reducing agent sample A.
Embodiment bis-raw materials quality per-cents are:
Concrete preparation process is as follows:
Water, waste water Sodium Pyrosulfite are added in the reactor that thermometer, condensing works, whipping appts are housed, at 25 ℃, drip acetone reaction 30 minutes, then start to drip the formaldehyde of 1/3 add-on, within 55 minutes, drip off, temperature 50 C reaction 30 minutes, the formaldehyde that continues all the other 2/3 add-ons of dropping dropwised at 140 minutes, raise the temperature to 105 ℃, insulation reaction 150 minutes, cools to room temperature, obtains environment-friendly type concrete high efficiency water reducing agent sample B.
Embodiment tri-raw materials quality per-cents are:
Concrete preparation process is as follows:
Water, waste water Sodium Pyrosulfite are added in the reactor that thermometer, condensing works, whipping appts are housed, at 25 ℃, drip acetone reaction 30 minutes, then start to drip the formaldehyde of 1/3 add-on, within 70 minutes, drip, 55 ℃ of reactions of temperature 30 minutes, the formaldehyde that continues all the other 2/3 add-ons of dropping dropwised in 145 minutes, raise the temperature to 110 ℃, insulation reaction 150 minutes, cools to room temperature, obtains environment-friendly type concrete high efficiency water reducing agent sample C.
Experimental example
Three groups of water reducer samples of three embodiment gained are tested by GB8076-2008 standard-required, and assay is as follows:
1, main raw material: raw material choose concrete inspection reference cement for experiment, grain fineness number modulus 2.8 is containing mud 0.8, and stone adopts the rubble of two gratings.
Water reducer adds by cement quality per-cent 1.2%.
Note: 4 time of coagulation in table: "-" represents in advance, and "+" represents to delay
By above data, can find out, the every test rating of admixture in experimental example meets the requirement of GB8076-2008 < < concrete admixture > > national standard completely, utilize the industrial effluent of producing beta naphthal and p-methyl phenol to produce aliphatic high-efficiency water reducing agent, realize effective utilization of waste water, can significantly reduce the production cost of water reducer, better people's living environment.
Claims (3)
1. an environment-friendly type concrete high efficiency water reducing agent, is comprised of the mass percent of following composition:
Described waste liquid is for producing the industrial effluent of beta naphthal, p-methyl phenol generation, by Na
2sO
3content 20% calculates.
2. environment-friendly type concrete high efficiency water reducing agent according to claim 1, is characterized in that, the mass percent of its composition is composed as follows:
3. a preparation method for the environment-friendly type concrete high efficiency water reducing agent described in claim 1 or 2, its step is as follows:
(1) waste liquid, water, Sodium Pyrosulfite are placed in reactor, airtight;
(2) when 25 ℃ of temperature, be added dropwise to acetone, hybrid reaction 30 minutes;
(3) in reactor, drip formaldehyde, first paragraph drips 1/3rd of formaldehyde consumption, and time for adding is controlled at 50-70 minute, controls temperature and at 50-55 ℃, reacts 30 minutes;
(4) continue to drip residue three/dicarbaldehyde, control time for adding 120-150 minute, be warmed up at 95-110 ℃ and react 150 minutes;
(5) cool to room temperature, both obtained environment-friendly type concrete high efficiency water reducing agent of the present invention.
Described reactor is provided with thermometer, condensing works and agitator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310632789.8A CN103641354A (en) | 2013-11-29 | 2013-11-29 | Environment-friendly concrete superplasticizer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310632789.8A CN103641354A (en) | 2013-11-29 | 2013-11-29 | Environment-friendly concrete superplasticizer and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103641354A true CN103641354A (en) | 2014-03-19 |
Family
ID=50246690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310632789.8A Pending CN103641354A (en) | 2013-11-29 | 2013-11-29 | Environment-friendly concrete superplasticizer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103641354A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104860568A (en) * | 2015-04-21 | 2015-08-26 | 萧县沃德化工科技有限公司 | Highly-efficient aliphatic water reducer modified by 2-naphthol waste liquor and preparation method thereof |
| CN105037670A (en) * | 2015-01-14 | 2015-11-11 | 江苏苏博特新材料股份有限公司 | High-effective water reducing agent and preparation method thereof |
| CN106396456A (en) * | 2016-08-26 | 2017-02-15 | 河南科之杰新材料有限公司 | Preparation method of aliphatic powdery water reducing agent |
| CN107573472A (en) * | 2017-08-31 | 2018-01-12 | 浙江吉盛化学建材有限公司 | A kind of production technology of aliphatic water reducing agent |
| CN108046640A (en) * | 2017-12-19 | 2018-05-18 | 萧县沃德化工科技有限公司 | A kind of waste liquid modified aliphatic high-efficiency water reducing agent of beta naphthal and preparation method thereof |
| CN108409181A (en) * | 2018-05-18 | 2018-08-17 | 萧县沃德化工科技有限公司 | A kind of modified aliphatic water reducing agent of useless residue in the production process containing phenols |
| CN110819407A (en) * | 2019-11-19 | 2020-02-21 | 安徽鑫固环保股份有限公司 | Coal water slurry dispersing agent prepared by dinaphthol production wastewater and preparation method thereof |
| CN111331730A (en) * | 2020-03-01 | 2020-06-26 | 刘青山 | Preparation device and preparation method of high-strength and compressive-property concrete |
| CN112374786A (en) * | 2020-08-26 | 2021-02-19 | 安徽鑫固环保股份有限公司 | Resource utilization method of salicylic acid production wastewater |
| CN112480343A (en) * | 2020-08-26 | 2021-03-12 | 安徽鑫固环保股份有限公司 | Method for resource utilization of phenol tar |
| CN112708086A (en) * | 2020-11-20 | 2021-04-27 | 安徽鑫固环保股份有限公司 | Method for recycling epoxy resin wastewater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1634794A (en) * | 2003-12-31 | 2005-07-06 | 吴霖秀 | High efficiency aliphatic sulfonate water reducing agent and method for preparing same |
| WO2005071217A1 (en) * | 2004-01-21 | 2005-08-04 | Halliburton Energy Services, Inc. | Methods, compositions and biodegradable fluid loss control additives for cementing subterranean zones |
| CN101186459A (en) * | 2007-12-04 | 2008-05-28 | 北京工业大学 | Method and application of manufacturing aliphatic high-efficiency water reducer by using industrial by-products |
| CN101531479A (en) * | 2009-04-03 | 2009-09-16 | 南京瑞迪高新技术公司 | Method for preparing low cost aliphatic high efficiency water reducing agent |
-
2013
- 2013-11-29 CN CN201310632789.8A patent/CN103641354A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1634794A (en) * | 2003-12-31 | 2005-07-06 | 吴霖秀 | High efficiency aliphatic sulfonate water reducing agent and method for preparing same |
| WO2005071217A1 (en) * | 2004-01-21 | 2005-08-04 | Halliburton Energy Services, Inc. | Methods, compositions and biodegradable fluid loss control additives for cementing subterranean zones |
| CN101186459A (en) * | 2007-12-04 | 2008-05-28 | 北京工业大学 | Method and application of manufacturing aliphatic high-efficiency water reducer by using industrial by-products |
| CN101531479A (en) * | 2009-04-03 | 2009-09-16 | 南京瑞迪高新技术公司 | Method for preparing low cost aliphatic high efficiency water reducing agent |
Non-Patent Citations (1)
| Title |
|---|
| 王子明等: "脂肪族磺酸盐高效减水剂合成中磺化剂的选用", 《纪念中国混凝土外加剂协会成立20周年论文集》, 30 April 2006 (2006-04-30), pages 20 - 23 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105037670B (en) * | 2015-01-14 | 2017-04-12 | 江苏苏博特新材料股份有限公司 | High-effective water reducing agent and preparation method thereof |
| CN105037670A (en) * | 2015-01-14 | 2015-11-11 | 江苏苏博特新材料股份有限公司 | High-effective water reducing agent and preparation method thereof |
| CN104860568A (en) * | 2015-04-21 | 2015-08-26 | 萧县沃德化工科技有限公司 | Highly-efficient aliphatic water reducer modified by 2-naphthol waste liquor and preparation method thereof |
| CN106396456B (en) * | 2016-08-26 | 2018-07-03 | 河南科之杰新材料有限公司 | A kind of preparation method of aliphatic powder water-reducing agent |
| CN106396456A (en) * | 2016-08-26 | 2017-02-15 | 河南科之杰新材料有限公司 | Preparation method of aliphatic powdery water reducing agent |
| CN107573472A (en) * | 2017-08-31 | 2018-01-12 | 浙江吉盛化学建材有限公司 | A kind of production technology of aliphatic water reducing agent |
| CN107573472B (en) * | 2017-08-31 | 2019-10-29 | 浙江吉盛化学建材有限公司 | A kind of production technology of aliphatic water reducing agent |
| CN108046640A (en) * | 2017-12-19 | 2018-05-18 | 萧县沃德化工科技有限公司 | A kind of waste liquid modified aliphatic high-efficiency water reducing agent of beta naphthal and preparation method thereof |
| CN108046640B (en) * | 2017-12-19 | 2020-11-27 | 萧县沃德化工科技有限公司 | Aliphatic superplasticizer modified by 2-naphthol waste liquid and preparation method thereof |
| CN108409181A (en) * | 2018-05-18 | 2018-08-17 | 萧县沃德化工科技有限公司 | A kind of modified aliphatic water reducing agent of useless residue in the production process containing phenols |
| CN110819407A (en) * | 2019-11-19 | 2020-02-21 | 安徽鑫固环保股份有限公司 | Coal water slurry dispersing agent prepared by dinaphthol production wastewater and preparation method thereof |
| CN111331730A (en) * | 2020-03-01 | 2020-06-26 | 刘青山 | Preparation device and preparation method of high-strength and compressive-property concrete |
| CN112374786A (en) * | 2020-08-26 | 2021-02-19 | 安徽鑫固环保股份有限公司 | Resource utilization method of salicylic acid production wastewater |
| CN112480343A (en) * | 2020-08-26 | 2021-03-12 | 安徽鑫固环保股份有限公司 | Method for resource utilization of phenol tar |
| CN112708086A (en) * | 2020-11-20 | 2021-04-27 | 安徽鑫固环保股份有限公司 | Method for recycling epoxy resin wastewater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103641354A (en) | Environment-friendly concrete superplasticizer and preparation method thereof | |
| CN111978061B (en) | A kind of preparation method of high water resistance anhydrous phosphogypsum cementitious material | |
| CN101549973B (en) | Composite concrete high-efficiency water reducing agent | |
| CN105731933B (en) | A kind of preparation method of graphene oxide/high-strength concrete composite material | |
| CN105272020B (en) | A kind of heat resistance is 500 DEG C of C40 pump concretes | |
| CN103342491A (en) | Iron tailing-based complex mineral admixture and preparation process thereof | |
| CN109336443A (en) | A kind of strong agent for concrete and preparation process thereof | |
| CN104556875B (en) | Use aggregate chips and the wet-mixing motar of CHARACTERISTICS OF TAILINGS SAND preparation | |
| CN113860764A (en) | Cementing material, full-solid waste concrete and preparation method thereof | |
| CN103113036B (en) | Modified aliphatic superplasticizer and preparation method thereof | |
| CN107445538A (en) | Non-autoclaved foam concrete material and preparation method thereof | |
| CN102276184B (en) | Retarding and water reducing agent for occlusal pile of subway drilling | |
| CN102786320A (en) | Autoclaved aerated concrete building block containing industrial solid waste and preparation method thereof | |
| Mutitu et al. | Influence of Lysinibacillus sphaericus on compressive strength and water sorptivity in microbial cement mortar | |
| CN104496330B (en) | Use aggregate chips and the wet-mixing masonry mortar of CHARACTERISTICS OF TAILINGS SAND preparation | |
| CN110078449A (en) | It is a kind of using rinsing the non-burning brick and preparation method thereof of mud preparation that rubble and Machine-made Sand generate | |
| CN104478280B (en) | Concrete synergist and preparation method thereof | |
| CN107935431A (en) | A kind of Concrete synergist and preparation method thereof | |
| CN111978042A (en) | Environment-friendly composite quick-drying high-performance concrete | |
| CN105199066A (en) | Preparation method of modified naphthalene water reducer | |
| CN109384412B (en) | Ordinary silicate concrete coagulant | |
| CN102180636A (en) | A Brick-making Process of Titanium Gypsum Mixed with Toxic Sludge | |
| CN102390947A (en) | Ardealite mineral admixture and preparation method thereof | |
| CN101100347A (en) | Technique for manufacturing aerated brick by burning sludge dried by chemical method | |
| CN105036582B (en) | Mine tailing aggregate chips part substitutes the application of natural sand and binder materials in concrete |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140319 |