CN1099089A - Early strength water reducing agent for non-alkali concrete - Google Patents

Early strength water reducing agent for non-alkali concrete Download PDF

Info

Publication number
CN1099089A
CN1099089A CN 94105914 CN94105914A CN1099089A CN 1099089 A CN1099089 A CN 1099089A CN 94105914 CN94105914 CN 94105914 CN 94105914 A CN94105914 A CN 94105914A CN 1099089 A CN1099089 A CN 1099089A
Authority
CN
China
Prior art keywords
alkali
superplasticizer
non
condensation
calcium
Prior art date
Application number
CN 94105914
Other languages
Chinese (zh)
Inventor
卢璋
秦懿龄
郝友玲
马晓增
Original Assignee
北京市石景山区华泰化学品公司
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 北京市石景山区华泰化学品公司 filed Critical 北京市石景山区华泰化学品公司
Priority to CN 94105914 priority Critical patent/CN1099089A/en
Publication of CN1099089A publication Critical patent/CN1099089A/en

Links

Abstract

The non-alkali efficient water reducer is made up of naphthalene through sulfuric acid sulfonation, formaldehyde condensation and lime neutralization, as well as mixing with ordinary water reducer, hydrated silicate minerals, inorganic salt of non-alkali metal, organic strength promoter, etc. grinding and mixing. As alkali is removed, long service life of concrete is ensured.

Description

本发明涉及一种无碱混凝土用早强减水剂,属建筑材料技术领域。 The present invention relates to an alkali-free early strength concrete superplasticizer, it belongs to technical field of building materials.

混凝土在有一定湿度、一定碱含量及骨料(或集料)有活性的条件下,会产生碱·骨料反应,产生膨胀,破坏混凝土,使其导致开裂以至完全丧失功能,因而有混凝土中癌症之称。 Concrete in a humidified, certain alkali content and aggregate (or aggregate) the conditional activity, produces an alkali-aggregate reaction, produce expanded concrete damage, lead to cracking or even complete loss of function, hence the concrete cancer said. 目前水泥中碱含量(以Na2O计)已接近产生碱·骨料反应临界值(1.8~3.8kg/m3),一般在2.5~3.5kg/m3左右,存在着产生碱·骨料反应危险。 Alkali content in the cement (in terms Na2O) is close to the base-aggregate reaction generating threshold (1.8 ~ 3.8kg / m3), generally about 2.5 ~ 3.5kg / m3, there is a risk of generating a base-aggregate reaction. 现在广泛在混凝土中使用着早强减水剂估计全国每年达几万吨。 Now widely used in the early strength water-reducing agent in concrete estimate the country up to several tons per year. 而这些早强减水剂绝大多数含大量碱类物质。 The vast majority of these early strength superplasticizer containing large amounts of alkali substances. 如常用的以元明粉为主的早强减水剂,在掺量3%、水泥用量300kg/m3的条件下,会引入混凝土中3.3kg/m3的碱类。 As used in the early strength superplasticizer mainly sodium sulfate, 3% in the dosage, the amount of cement under 300kg / m3, the bases will be introduced into the concrete 3.3kg / m3 of. 由于它们均为易溶盐类,更易参加反应。 Because they are soluble salts, more participate in the reaction. 因此,这些外加剂加入到混凝土中,只要其它条件具备,肯定会大大促进产生此类有重大危害作用的碱·骨料反应。 Therefore, these additives added to the concrete, as long as other conditions are met, will certainly be greatly promote the production of alkali-aggregate reaction of such a significant harmful effects of.

本发明的目的是研制一种无碱混凝土用早强减水剂,除去已有技术所用早强减水剂中的碱类物质,以保证混凝土有足够长的使用寿命。 Object of the present invention is to develop an alkali early strength concrete superplasticizer, removed prior art early strength superplasticizer of alkali substances, in order to ensure that the concrete has a sufficiently long service life.

本发明的内容是:无碱混凝土用早强减水剂,由下列各组分组成:(1)无碱高效减水剂,其制备工艺为:将萘经硫酸磺化,磺化的比例为萘∶硫酸=1∶0.5~1.5,磺化温度为125℃~180℃,时间为2-5小时。 The present invention is: E-early strength concrete superplasticizer, composed by the following components: (1) alkali superplasticizer, the preparation process is: the ratio of sulfonated naphthalene sulfated, sulfonated as naphthalene: sulfuric acid = 0.5 to 1.5, the sulfonation temperature is 125 ℃ ~ 180 ℃, time of 2-5 hours. 然后经甲醛缩合,缩合比例为:萘∶甲醛=1∶0.5~1.5,缩合时间为3-8小时,缩合温度为85~120℃,最后用石灰中和至中性,经过滤干燥制得。 Then dried formaldehyde condensates, the condensation ratio: naphthalene: formaldehyde = 0.5 to 1.5, the condensation time of 3-8 hours, the condensation temperature is 85 ~ 120 ℃, and finally with lime until neutral, filtered and dried to obtain.

(2)非碱金属无机盐,为硫酸钙、亚硝酸钙、硝酸钙、硫酸镁或硝酸镁中的任何一种,由市售得到。 (2) non-alkali metal inorganic salt, calcium sulfate, calcium nitrite, calcium nitrate, magnesium nitrate, magnesium sulfate or any of, obtained from commercially available.

(3)硅酸盐水合矿物,为3MgO·SiO2·H2O,Al2O3·2SiO2·H2O,,6MgO·4SiO2,3CaO·Al2O3·CaSO4·12H2O中的任何一种。 (3) a hydrated silicate minerals, any of a 3MgO · SiO2 · H2O, Al2O3 · 2SiO2 · H2O ,, 6MgO · 4SiO2,3CaO · Al2O3 · CaSO4 · 12H2O in. 将其经干燥、破碎、粉磨至80~100目即可使用。 Which was dried, crushed, ground to 80 to 100 mesh can be used. 该类水合矿物可以是某种天然水合硅酸盐矿物,也可以由人工合成制得。 Such hydrated minerals may be some natural hydrous silicate minerals, it can also be made from synthetic system.

(4)有机促强剂,为三异丙醇胺,三乙醇胺,甲醇,乙酸钙,甲酸钙和尿素中的任何一种。 (4) an organic strong promoting agent is triisopropanolamine, triethanolamine any, methanol, calcium acetate, calcium formate and a urea. 其制备方法是将上述液体品以1∶1~10的比例与粉煤灰混匀成粉体,粉碎至过80目筛。 The preparation method is the liquid product in a ratio of 1/1 to 10 and the mixing of fly ash into powder, pulverized to 80 mesh sieve. 若为固体品,可直接将其粉碎至过80目筛使用。 If the product is a solid, it can be directly pulverized to 80 mesh sieve used.

(5)辅料,为粉煤灰、硅灰和沸石粉中的任何一种,粉碎至过80目筛。 (5) materials, any of a fly ash, silica fume, and zeolite powder is pulverized to 80 mesh sieve.

将上述五种组分与市售普通减水剂以下列比例混合均匀,即成产品:无碱高效减水剂:2~10% 普通减水剂:0.5~5%非碱金属无机盐:5~30% 硅酸盐水合矿物:10~80%有机促强剂:0.05~0.5% 辅料:适量下面介绍本发明的几个实施例。 The above five components were mixed to a commercially available ordinary water in the following proportions evenly Serve products: alkali superplasticizer: 2 to 10% ordinary water: 0.5 to 5% non-alkali metal inorganic salt: 5 ~ 30% hydrous silicate minerals: 10-80% organic pro-strength agent: 0.05 to 0.5% accessories: qs the following describes several embodiments of the present invention.

实施例一萘1kg,加0.8kg硫酸,在125℃磺化3小时,加入0.8kg甲醛在85℃下缩合5小时,加水2kg,加石灰乳化适量,使其PH=7.5~8.0,过滤、干燥、粉磨至通过80目筛成产品;加入木素磺酸钙0.5kg;加入磨细至80目的硫酸钙10kg;加入硅酸盐水合矿物3MgO·SiO2·H2O磨细至80目的粉末20kg;加入有机促强剂甲酸钙2.5kg;(磨细至80目),混合均匀成产品。 A naphthyl Example 1kg, plus 0.8kg sulfuric acid, at 125 ℃ sulfonation 3 hours, 0.8kg formaldehyde condensation at 85 ℃ 5 hours, adding water 2kg, amount of milk of lime, so PH = 7.5 ~ 8.0, filtered, and dried , by grinding to 80 mesh sieve into a product; calcium lignosulfonate was added 0.5kg; 80 object is added to the ground calcium sulfate 10kg; hydrous silicate mineral added 3MgO · SiO2 · H2O ground to 80 mesh powder 20kg; added The organic pro-strength agent 2.5 kg of calcium formate; (ground to 80 mesh), mixed into the product.

实施例二萘1kg,加1.2kg硫酸,在150℃磺化3小时,加入0.8kg甲醛缩合,在95℃下缩合4小时,加水2kg,加石灰乳使使其PH=7~8,过滤、干燥、粉磨至通过80目筛成产品;加入普通减水剂木素磺酸钙0.3kg;加入磨细至80目的亚硝酸钙15kg;加入3CaO·Al2O3·CaSO4·12H2O磨细成80目的粉末30kg;加入磨细至通过80目的甲酸钙4kg;混匀成产品。 Example dinaphthyl 1kg, plus 1.2kg sulfuric acid, sulfonated deg.] C at 150 for 3 hours, 0.8kg formaldehyde condensates, the condensation at 95 ℃ 4 hours, adding water 2kg, so that the milk of lime PH = 7 ~ 8, filtered, drying, grinding to 80 mesh sieve into a product; ordinary water was added 0.3kg of calcium lignin sulfonate; ground to 80 mesh was added 15kg of calcium nitrite; added 3CaO · Al2O3 · CaSO4 · 12H2O ground to 80 mesh powder 30kg; was added ground to pass through 80 mesh calcium 4kg; mix into a product.

实施例三萘1kg,加1.5kg硫酸,在170℃磺化5小时,加水0.3kg,加甲醛0.9kg,在110℃下缩合4小时,加水2kg,加石灰乳中和至PH=7.5~8.5,过滤、干燥、粉磨至通过80目;加入木素磺酸钙1.5kg;硝酸镁10kg;磨细至80目的Al2O3·2SiO2·H2O 20kg;加入1份甲醇与10份粉煤灰拌匀物0.5kg;混匀成产品。 According to a third embodiment naphthalene 1kg, plus 1.5kg sulfuric acid, at 170 ℃ sulfonation for 5 hours water was added 0.3kg, 0.9kg plus formaldehyde, condensation at 110 ℃ 4 hours, adding water 2kg, was added to the milk of lime and PH = 7.5 ~ 8.5 , filtered, dried, grinding to 80 mesh; was added 1.5kg of calcium lignin sulfonate; 10kg of magnesium nitrate; ground to 80 mesh Al2O3 · 2SiO2 · H2O 20kg; 1 parts of methanol were added and the mix was 10 parts fly ash 0.5kg; mix into products.

Claims (1)

1.一种无碱混凝土用早强减水剂,其特征在于早强减水剂由下列各组分组成:(1)无碱高效减水剂,其制备工艺为:将萘经硫酸磺化,磺化的比例为萘∶硫酸=1∶0.5~1.5,磺化温度为125℃-180℃,时间为2-5小时,然后经甲醛缩合,缩合比例为:萘∶甲醛=1∶0.5~1.5,缩合时间为3-8小时,缩合温度为85℃~120℃,最后用石灰中和至中性,经过滤干燥制得;(2)非碱金属无机盐,为硫酸钙、硝酸钙、硫酸镁或硝酸镁中的任何一种,由市售得到;(3)硅酸盐水合矿物,为3MgO·SiO2·H2O,Al2O3·2SiO2·H2O,6MgO·4SiO2,3CaO·Al2O3·CaSO4·12H2O中的任何一种,将其经干燥、破碎、粉磨至80~100目即可使用;(4)有机促强剂,为三异丙醇胺,三乙醇胺,甲醇,乙酸钙,甲酸钙和尿素中的任何一种,其制备方法为将上述液体的1∶1~10的比例与粉煤灰混匀成粉体,粉碎至过80目筛;(5)辅料, An alkali-free early strength concrete superplasticizer, characterized in that the early strength superplasticizer grouped by the following groups: (1) alkali superplasticizer, which preparation process: sulfuric acid sulfonated naphthalene , the ratio of sulfonated naphthalene: sulfuric acid = 0.5 to 1.5, the sulfonation temperature is 125 ℃ -180 ℃, time of 2-5 hours, followed by condensation with formaldehyde, condensation ratio: naphthalene: formaldehyde = 0.5 ~ 1.5, the condensation time of 3-8 hours, a condensation temperature of 85 ℃ ~ 120 ℃, and finally with lime until neutral, filtered and dried to obtain; (2) non-alkali metal inorganic salt, calcium sulfate, calcium nitrate, magnesium sulfate or magnesium nitrate in any, obtained from commercially available; (3) a hydrated silicate minerals, as 3MgO · SiO2 · H2O, Al2O3 · 2SiO2 · H2O, 6MgO · 4SiO2,3CaO · Al2O3 · CaSO4 · 12H2O in any one of which was dried, crushed, ground to 80 to 100 mesh can be used; (4) an organic pro-strength agent, as triisopropanolamine, triethanolamine, methanol, calcium acetate, calcium formate and urea in any of which the mixing ratio of preparation method of the liquid and fly ash 1/1 to 10 into a powder, pulverized to 80 mesh sieve; (5) materials, 为粉煤灰、硅灰和沸石粉中的任何一种,粉碎至过80目筛;将上述五种组分与市售普通减水剂以下列比例混合均匀,即成产品:无碱高效减水剂:2~10% 普 通 减 水剂:0.5~5%非碱金属无机盐:5~30% 硅酸盐水合矿物:10~80%有 机 促 强 剂:0.05~0.5% 辅 料:适量 Any of a fly ash, silica fume, and zeolite powder is pulverized to 80 mesh sieve; The above five components were mixed to a commercially available ordinary water in the following proportions evenly Serve products: alkali superplasticizer agent: 2 to 10% ordinary water: 0.5 to 5% non-alkali metal inorganic salt: 5 ~ 30% hydrous silicate minerals: 10-80% organic pro-strength agent: 0.05 to 0.5% accessories: qs
CN 94105914 1994-06-03 1994-06-03 Early strength water reducing agent for non-alkali concrete CN1099089A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 94105914 CN1099089A (en) 1994-06-03 1994-06-03 Early strength water reducing agent for non-alkali concrete

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 94105914 CN1099089A (en) 1994-06-03 1994-06-03 Early strength water reducing agent for non-alkali concrete

Publications (1)

Publication Number Publication Date
CN1099089A true CN1099089A (en) 1995-02-22

Family

ID=5032260

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 94105914 CN1099089A (en) 1994-06-03 1994-06-03 Early strength water reducing agent for non-alkali concrete

Country Status (1)

Country Link
CN (1) CN1099089A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1308299C (en) * 2003-02-05 2007-04-04 独立行政法人科学技术振兴机构 Polycyclic aromatic carbon based solid strong acid
CN100391883C (en) * 2001-03-02 2008-06-04 詹姆士·哈代国际金融公司 Additive for dewaterable slurry
CN100542990C (en) 2007-12-10 2009-09-23 中建三局建设工程股份有限公司 Diatomic alcohol acid series concrete high-efficiency water reducing agent and production method thereof
US7658794B2 (en) 2000-03-14 2010-02-09 James Hardie Technology Limited Fiber cement building materials with low density additives
CN100595173C (en) 2008-06-13 2010-03-24 北京工业大学 Early strength polycarboxylic acid high performance dehydragent and method for preparing same
CN101497506B (en) 2009-03-20 2011-07-20 武汉市联合石油化工有限责任公司 Process for preparing modified naphthalene series water reducing agent
US7993570B2 (en) 2002-10-07 2011-08-09 James Hardie Technology Limited Durable medium-density fibre cement composite
US7998571B2 (en) 2004-07-09 2011-08-16 James Hardie Technology Limited Composite cement article incorporating a powder coating and methods of making same
CN101391875B (en) 2008-10-30 2012-01-25 安徽淮河化工股份有限公司 High-early strength type additive special for shaft slipform construction concrete
US8209927B2 (en) 2007-12-20 2012-07-03 James Hardie Technology Limited Structural fiber cement building materials
US8993462B2 (en) 2006-04-12 2015-03-31 James Hardie Technology Limited Surface sealed reinforced building element
CN105152575A (en) * 2015-09-24 2015-12-16 滁州京安工贸有限责任公司 Chloride-free low-alkaline type concrete set retarding superplasticizer
CN105174794A (en) * 2015-09-24 2015-12-23 滁州京安工贸有限责任公司 Chloride-free early-strength water-reducing agent capable of improving concrete workability

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7727329B2 (en) 2000-03-14 2010-06-01 James Hardie Technology Limited Fiber cement building materials with low density additives
US8182606B2 (en) 2000-03-14 2012-05-22 James Hardie Technology Limited Fiber cement building materials with low density additives
US7658794B2 (en) 2000-03-14 2010-02-09 James Hardie Technology Limited Fiber cement building materials with low density additives
CN100391883C (en) * 2001-03-02 2008-06-04 詹姆士·哈代国际金融公司 Additive for dewaterable slurry
US7704316B2 (en) 2001-03-02 2010-04-27 James Hardie Technology Limited Coatings for building products and methods of making same
US7993570B2 (en) 2002-10-07 2011-08-09 James Hardie Technology Limited Durable medium-density fibre cement composite
CN1308299C (en) * 2003-02-05 2007-04-04 独立行政法人科学技术振兴机构 Polycyclic aromatic carbon based solid strong acid
US7998571B2 (en) 2004-07-09 2011-08-16 James Hardie Technology Limited Composite cement article incorporating a powder coating and methods of making same
US8993462B2 (en) 2006-04-12 2015-03-31 James Hardie Technology Limited Surface sealed reinforced building element
CN100542990C (en) 2007-12-10 2009-09-23 中建三局建设工程股份有限公司 Diatomic alcohol acid series concrete high-efficiency water reducing agent and production method thereof
US8209927B2 (en) 2007-12-20 2012-07-03 James Hardie Technology Limited Structural fiber cement building materials
CN100595173C (en) 2008-06-13 2010-03-24 北京工业大学 Early strength polycarboxylic acid high performance dehydragent and method for preparing same
CN101391875B (en) 2008-10-30 2012-01-25 安徽淮河化工股份有限公司 High-early strength type additive special for shaft slipform construction concrete
CN101497506B (en) 2009-03-20 2011-07-20 武汉市联合石油化工有限责任公司 Process for preparing modified naphthalene series water reducing agent
CN105152575A (en) * 2015-09-24 2015-12-16 滁州京安工贸有限责任公司 Chloride-free low-alkaline type concrete set retarding superplasticizer
CN105174794A (en) * 2015-09-24 2015-12-23 滁州京安工贸有限责任公司 Chloride-free early-strength water-reducing agent capable of improving concrete workability

Similar Documents

Publication Publication Date Title
EP1091914B1 (en) Activated aluminosilicate binder
Nehdi et al. Optimization of high strength limestone filler cement mortars
CN100455533C (en) A novel masonry cement
Singh et al. Activation of gypsum anhydrite-slag mixtures
US5624489A (en) Conversion-preventing additive for high alumina cement products
US5484480A (en) Use of alumina clay with cement fly ash mixtures
CN101037312B (en) Middle-effective pumping aid
DE29624624U1 (en) Stable setting and hardening accelerator solution - suitable for wet spray addition to hydraulic binder
US4256500A (en) Pozzolan cement compositions
US5554352A (en) Processed silica as a natural pozzolan for use as a cementitious component in concrete and concrete products
US5482549A (en) Cement, method of preparing such cement and method of making products using such cement
CN1990413A (en) Synthesis-reactivation technique for preparing inorganic coagulation material
CN1278979C (en) Hydraulic cementing agent, its preparation method and material prepared using the cementing agent
CN101200354A (en) Concrete super instant coagulant
Telesca et al. Flue gas desulfurization gypsum and coal fly ash as basic components of prefabricated building materials
US4032353A (en) Low porosity aggregate-containing cement composition and process for producing same
Ding et al. Strätlingite formation in high alumina cement-silica fume systems: significance of sodium ions
RU2376252C2 (en) Hydraulic binder
CN103011662B (en) Alkali-activated high-performance water reducer and preparation method thereof
CN1207235C (en) Admixture special for high-performance marine concrete and production method thereof
RU2021221C1 (en) Hydraulic cement
US20090217844A1 (en) Universal Hydraulic Binder Based On Fly Ash Type F
EP1614670B1 (en) Use of a binder mixture to formulate a cementitious mortar system
CA1061808A (en) Process for producing low porosity cement
EP0245326A1 (en) Improvements relating to hydraulic binders.

Legal Events

Date Code Title Description
C10 Request of examination as to substance
C06 Publication
C12 Rejection of an application for a patent