CN104788072A - Early-strength type aluminate cement based self-leveling material - Google Patents

Early-strength type aluminate cement based self-leveling material Download PDF

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Publication number
CN104788072A
CN104788072A CN201510120035.3A CN201510120035A CN104788072A CN 104788072 A CN104788072 A CN 104788072A CN 201510120035 A CN201510120035 A CN 201510120035A CN 104788072 A CN104788072 A CN 104788072A
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China
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parts
leveling
water
self
early
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CN201510120035.3A
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李东旭
戴浩
张树鹏
琚诚兰
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Nanjing University of Science and Technology
Nanjing Tech University
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Nanjing University of Science and Technology
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Priority to CN201510120035.3A priority Critical patent/CN104788072A/en
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Abstract

The invention relates to an early-strength type aluminate cement based self-leveling material which is characterized by comprising the following raw material components in parts by weight: 300-340 parts of aluminate cement, 40-60 parts of gypsum, 20-60 parts of portland cement, 380-420 parts of quartz sand, 180-220 parts of a heavy calcium carbonate powder, 8-20 parts of a redispersible emulsion powder, 2-2.4 parts of a water reducing agent, 0.15-0.25 part of a water-retaining agent, 1.5-2.5 parts of a defoaming agent, and 0-0.4 part of a retarder, wherein the water-material mass ratio is 0.18-0.19. The self-leveling material has the characteristics of good fluidity, high surface flatness, good stability, fast condensation hardening speed, high early strength, small volume shrinkage rate and the like, and can be used as a ground leveling material and a grouting repairing material.

Description

A kind of early-strength type aluminate cement based self-leveling material
Technical field
The present invention relates to a kind of early-strength type aluminate cement based self-leveling material.
Background technology
Cement-based self-leveling material is base material with cement, adds aggregate, mineral-filled material and chemical admixture and is prepared from.Add water according to the ratio of regulation during use and stir or powder and liquid material are stirred, after mechanical pumping or artificial construction, without the need to Manual, vibrate smooth, the automatic levelling of the high fluidity by slurry forms smooth plane, can be used as floor material or grouting patching material.
The performance of gelling system to self-leveling material plays conclusive effect, and silicate cement strength development is slow, and after sclerosis, cubic deformation is comparatively large, easily occurs shrinkage cracking.Aluminate cement setting rate is fast, and early strength is high, and Sulphate-resistant property is strong.But its hydrated product easily crystal conversion occurs, affect the porosity of Behavior of Hardened Cement Paste, cause later strength retraction.When aluminate cement, silicate cement, gypsum are used in combination, can react between three generation ettringite, is conducive to promoting strength development and compensate for volume shrinkage.In the gelling system based on aluminate cement, the volume of gypsum determines the growing amount of ettringite; Silicate cement provides a large amount of calcium hydroxide in hydration process, can participate in reacting and promote the formation of ettringite, effectively can also improve the stability of gravity flowing levelling mortar, reduce segregation and bleeding.Semi-hydrated gypsum dissolution rate, faster than without water anhydrite and dihydrate gypsum, promotes that mortar early strength develops, compensate for volume shrinkage effect is more remarkable.But volume is crossed and operable time can be made at most to shorten, and even produces false set, also need adulterated appropriate retardant to control the time of coagulation of mortar.
Therefore, the aluminate cement based self-leveling material that proportioning is suitable has the features such as good workability, setting rate is fast, structure degree of compactness is high, volume stability is good, can be used for floor leveling, repairing concrete crack and rush repair engineering.
Summary of the invention
The object of this invention is to provide a kind of early-strength type aluminate cement based self-leveling material.
Technical scheme of the present invention is: a kind of early-strength type aluminate cement based self-leveling material, it is characterized in that the weight part of its feed composition and each component is respectively as follows: 300 ~ 340 parts of aluminate cements, 40 ~ 60 parts of gypsum, 20 ~ 60 parts of silicate cements, 380 ~ 420 parts of quartz sand, 180 ~ 220 dicalcium powders, 8 ~ 20 parts of redispersable latex powders, 2 ~ 2.4 parts of water reducers, 0.15 ~ 0.25 water-holding agent, 1.5 ~ 2.5 parts of defoamers, retardant 0 ~ 0.4 part; Water material mass ratio is 0.18 ~ 0.19.
Preferably above-mentioned aluminate cement is CA50 level; Silicate cement model is 42.5 grades or 52.5 grades; Preferred gypsum is alpha-semi water plaster stone or β-semi-hydrated gypsum.
Preferably above-mentioned quartz sand has two kinds, is respectively 40 ~ 60 orders and 60 ~ 120 orders, in mass ratio 1:(0.65 ~ 1.55) used in combination.
Preferably described dicalcium powder order number is 400 orders.Preferably described can point latex powder be " Wa Ke " again 5044N (VAE), " Wa Ke " one in 5010N (VAE); Water reducer is high-efficiency water-reducing agent of poly-carboxylic acid; Defoamer is p803 powder defoamer; One in hydroxypropyl methyl cellulose ether (HPMC), range of viscosities 60000 ~ 100000mpa.s; Retardant is tartrate retardant.
The dry powder of gravity flowing levelling mortar by described each component in mass ratio Homogeneous phase mixing form, carry out the fabrication & properties test of mortar by JC/T985-2005 " ground cement-based self-leveling mortar " industry standard.
Beneficial effect:
Initial flow degree and 20min all reach rower requirement, have enough operable times; The stability of mortar is high, and without segregation and bleeding, surface finish is high; Setting and harden speed is fast and early strength is high, and 1d ultimate compression strength can reach 30MPa, and later strength still has larger enhancement rate.
Embodiment
Embodiment 1
By mass, proportioning is as follows: the aluminate cement 340 parts of CA50, alpha-semi water plaster stone 40 parts, P II 52.5 silicate cement 20 parts, 40 ~ 60 order quartz sand 150 parts, 60 ~ 120 order quartz sand 230 parts, 400 order dicalcium powder 220 parts, " Wa Ke " 5044N redispersable latex powder 8 parts, HY poly carboxylic acid powder water reducer 2 parts, p803 powder defoamer 1.5 parts, hydroxypropyl methyl cellulose ether water-holding agent (viscosity is 80000mpa.s) 0.25 part, water material mass ratio is 0.18.Mortar preparation and performance test are undertaken by JC/T985-2005 " ground cement-based self-leveling mortar " industry standard.
Embodiment 2
By mass, proportioning is as follows: the aluminate cement 340 parts of CA50, β-semi-hydrated gypsum 40 parts, P II 52.5 silicate cement 20 parts, 40 ~ 60 order quartz sand 190 parts, 60 ~ 120 order quartz sand 190 parts, 400 order dicalcium powder 220 parts, " Wa Ke " 5044N redispersable latex powder 8 parts, HY poly carboxylic acid powder water reducer 2 parts, p803 powder defoamer 1.5 parts, hydroxypropyl methyl cellulose ether water-holding agent (viscosity is 80000mpa.s) 0.25 part, water material mass ratio is 0.185.Mortar preparation and performance test are undertaken by JC/T985-2005 " ground cement-based self-leveling mortar " industry standard.
Embodiment 3
By mass, proportioning is as follows: the aluminate cement 320 parts of CA50, alpha-semi water plaster stone 60 parts, P II 52.5 silicate cement 20 parts, 40 ~ 60 order quartz sand 200 parts, 60 ~ 120 order quartz sand 200 parts, 400 order dicalcium powder 200 parts, " Wa Ke " 5044N redispersable latex powder 12 parts, HY poly carboxylic acid powder water reducer 2 parts, p803 powder defoamer 1.5 parts, hydroxypropyl methyl cellulose ether water-holding agent (viscosity is 80000mpa.s) 0.2 part, water material mass ratio is 0.18.Mortar preparation and performance test are undertaken by JC/T985-2005 " ground cement-based self-leveling mortar " industry standard.
Embodiment 4
By mass, proportioning is as follows: the aluminate cement 320 parts of CA50, β-semi-hydrated gypsum 40 parts, P II 52.5 silicate cement 40 parts, 40 ~ 60 order quartz sand 200 parts, 60 ~ 120 order quartz sand 200 parts, 400 order dicalcium powder 200 parts, " Wa Ke " 5010N redispersable latex powder 12 parts, HY poly carboxylic acid powder water reducer 2.4 parts, p803 powder defoamer 2 parts, hydroxypropyl methyl cellulose ether water-holding agent (viscosity is 80000mpa.s) 0.2 part, water material mass ratio is 0.19.Mortar preparation and performance test are undertaken by JC/T985-2005 " ground cement-based self-leveling mortar " industry standard.
Embodiment 5
By mass, proportioning is as follows: CA50 aluminate cement 300 parts, alpha-semi water plaster stone 60 parts, P II 52.5 silicate cement 40 parts, 40 ~ 60 order quartz sand 250 parts, 60 ~ 120 order quartz sand 170 parts, 400 order dicalcium powder 180 parts, " Wa Ke " 5044N redispersable latex powder 20 parts, HY poly carboxylic acid powder water reducer 2 parts, p803 powder defoamer 2.5 parts, hydroxypropyl methyl cellulose ether water-holding agent (viscosity is 80000mpa.s) 0.15 part, tartrate retardant 0.4 part, water material mass ratio is 0.18.Mortar preparation and performance test are undertaken by JC/T985-2005 " ground cement-based self-leveling mortar " industry standard.Embodiment 6
By mass, proportioning is as follows: CA50 aluminate cement 300 parts, β-semi-hydrated gypsum 40 parts, PO42.5 silicate cement 60 parts, 40 ~ 60 order quartz sand 250 parts, 60 ~ 120 order quartz sand 170 parts, 400 order dicalcium powder 180 parts, " Wa Ke " 5010N redispersable latex powder 20 parts, HY poly carboxylic acid powder water reducer 2.4 parts, p803 powder defoamer 2.5 parts, hydroxypropyl methyl cellulose ether water-holding agent (viscosity is 60000mpa.s) 0.15 part, tartrate retardant 0.4 part, water material mass ratio is 0.185.Mortar preparation and performance test are undertaken by JC/T985-2005 " ground cement-based self-leveling mortar " industry standard.
Embodiment performance is as following table:

Claims (6)

1. an early-strength type aluminate cement based self-leveling material, is characterized in that the weight part of its feed composition and each component is respectively as follows: 300 ~ 340 parts of aluminate cements, 40 ~ 60 parts of gypsum, 20 ~ 60 parts of silicate cements, 380 ~ 420 parts of quartz sand, 180 ~ 220 dicalcium powders, 8 ~ 20 parts of redispersable latex powders, 2 ~ 2.4 parts of water reducers, 0.15 ~ 0.25 water-holding agent, 1.5 ~ 2.5 parts of defoamers, retardant 0 ~ 0.4 part; Water material mass ratio is 0.18 ~ 0.19.
2. early-strength type aluminate cement based self-leveling material according to claim 1, is characterized in that described aluminate cement is CA50 level; Silicate cement model is 42.5 grades or 52.5 grades.
3. early-strength type aluminate cement based self-leveling material according to claim 1, is characterized in that described gypsum is alpha-semi water plaster stone or β-semi-hydrated gypsum.
4. early-strength type aluminate cement based self-leveling material according to claim 1, is characterized in that described quartz sand is 40 ~ 60 orders and 60 ~ 120 object mixtures; Wherein 40 ~ 60 orders and 60 ~ 120 orders 1:(0.65 ~ 1.55 in mass ratio) used in combination.
5. early-strength type aluminate cement based self-leveling material according to claim 1, is characterized in that the order number of described dicalcium powder is 400 orders.
6. early-strength type aluminate cement based self-leveling material according to claim 1, is characterized in that described redispersable latex powder is for " Wa Ke " or " Wa Ke " in one; Water reducer is high-efficiency water-reducing agent of poly-carboxylic acid; Defoamer is powder defoamer; Water-holding agent is hydroxypropyl methyl cellulose ether (HPMC), range of viscosities 60000 ~ 100000mpa.s; Retardant is tartrate retardant.
CN201510120035.3A 2015-03-18 2015-03-18 Early-strength type aluminate cement based self-leveling material Pending CN104788072A (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106587871A (en) * 2016-11-03 2017-04-26 南京工业大学 Self-leveling mortar terrace material used for under-floor heating facilities
CN106747173A (en) * 2016-11-10 2017-05-31 广西柏睿通建材科技有限公司 A kind of self-leveling cement basic ring protects terrace mortar
CN107311580A (en) * 2017-08-24 2017-11-03 合肥翠鸟节能建材有限公司 A kind of common self-leveling material of bottom
CN107540329A (en) * 2017-09-26 2018-01-05 河南兴安新型建筑材料有限公司 Quick-hardening cement based self-leveling mortar
CN107572992A (en) * 2017-09-20 2018-01-12 西安建筑科技大学 A kind of concrete repairing material for being applicable marine environment and preparation method thereof
CN108083746A (en) * 2017-12-06 2018-05-29 诺弗斯绝热材料有限公司 A kind of surface layer high intensity self-leveling material and preparation method thereof
CN108178590A (en) * 2018-02-08 2018-06-19 灵猫(广州)新材料科技有限公司 It is a kind of to polish the high performance cement base self leveling material with metal sense
CN108341639A (en) * 2018-04-12 2018-07-31 江苏兆佳建材科技有限公司 A kind of early-strength cement base thick-layer leveling mortar and application method
CN108911685A (en) * 2018-09-17 2018-11-30 佛山皖和新能源科技有限公司 A kind of preparation method of gypsum-based self-leveling material
CN109354471A (en) * 2018-11-21 2019-02-19 君旺节能科技股份有限公司 A kind of lower shrinkage self-compaction super hardening mending mortar and its construction technology
CN110357544A (en) * 2019-07-15 2019-10-22 天津炬实科技发展股份有限公司 A kind of upper flow regime cracking resistance early-strength repairing mortar and preparation method thereof
CN110845206A (en) * 2019-12-09 2020-02-28 成都宏基建材股份有限公司 Cement millstone terrace material and production method thereof
CN111574171A (en) * 2020-04-09 2020-08-25 张家港弗克新型建材有限公司 Waterproof self-leveling mortar for surface layer and preparation method thereof
CN111592309A (en) * 2019-04-29 2020-08-28 中建材创新科技研究院有限公司 Heat-preservation gypsum self-leveling mortar and preparation method thereof

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106587871A (en) * 2016-11-03 2017-04-26 南京工业大学 Self-leveling mortar terrace material used for under-floor heating facilities
CN106747173A (en) * 2016-11-10 2017-05-31 广西柏睿通建材科技有限公司 A kind of self-leveling cement basic ring protects terrace mortar
CN107311580A (en) * 2017-08-24 2017-11-03 合肥翠鸟节能建材有限公司 A kind of common self-leveling material of bottom
CN107572992A (en) * 2017-09-20 2018-01-12 西安建筑科技大学 A kind of concrete repairing material for being applicable marine environment and preparation method thereof
CN107540329A (en) * 2017-09-26 2018-01-05 河南兴安新型建筑材料有限公司 Quick-hardening cement based self-leveling mortar
CN108083746A (en) * 2017-12-06 2018-05-29 诺弗斯绝热材料有限公司 A kind of surface layer high intensity self-leveling material and preparation method thereof
CN108178590A (en) * 2018-02-08 2018-06-19 灵猫(广州)新材料科技有限公司 It is a kind of to polish the high performance cement base self leveling material with metal sense
CN108341639A (en) * 2018-04-12 2018-07-31 江苏兆佳建材科技有限公司 A kind of early-strength cement base thick-layer leveling mortar and application method
CN108911685A (en) * 2018-09-17 2018-11-30 佛山皖和新能源科技有限公司 A kind of preparation method of gypsum-based self-leveling material
CN109354471A (en) * 2018-11-21 2019-02-19 君旺节能科技股份有限公司 A kind of lower shrinkage self-compaction super hardening mending mortar and its construction technology
CN111592309A (en) * 2019-04-29 2020-08-28 中建材创新科技研究院有限公司 Heat-preservation gypsum self-leveling mortar and preparation method thereof
CN110357544A (en) * 2019-07-15 2019-10-22 天津炬实科技发展股份有限公司 A kind of upper flow regime cracking resistance early-strength repairing mortar and preparation method thereof
CN110845206A (en) * 2019-12-09 2020-02-28 成都宏基建材股份有限公司 Cement millstone terrace material and production method thereof
CN111574171A (en) * 2020-04-09 2020-08-25 张家港弗克新型建材有限公司 Waterproof self-leveling mortar for surface layer and preparation method thereof

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