CN104108918A - High performance cement-base self-leveling mortar - Google Patents
High performance cement-base self-leveling mortar Download PDFInfo
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- CN104108918A CN104108918A CN201410275035.6A CN201410275035A CN104108918A CN 104108918 A CN104108918 A CN 104108918A CN 201410275035 A CN201410275035 A CN 201410275035A CN 104108918 A CN104108918 A CN 104108918A
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- leveling mortar
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 32
- 239000004568 cement Substances 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000010440 gypsum Substances 0.000 claims abstract description 23
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000010881 fly ash Substances 0.000 claims abstract description 17
- 239000002893 slag Substances 0.000 claims abstract description 15
- -1 8 ~ 12 parts Substances 0.000 claims description 33
- 239000000843 powder Substances 0.000 claims description 21
- 239000000945 filler Substances 0.000 claims description 19
- 239000011398 Portland cement Substances 0.000 claims description 18
- 239000013530 defoamer Substances 0.000 claims description 16
- 239000003638 chemical reducing agent Substances 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 15
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 13
- 239000005864 Sulphur Substances 0.000 claims description 13
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 13
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 13
- 239000004816 latex Substances 0.000 claims description 12
- 229920000126 latex Polymers 0.000 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 11
- 239000002956 ash Substances 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 9
- 230000000295 complement effect Effects 0.000 claims description 8
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 6
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims description 5
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 3
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000006004 Quartz sand Substances 0.000 claims description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 3
- 229920002522 Wood fibre Polymers 0.000 claims description 3
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052925 anhydrite Inorganic materials 0.000 claims description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 229920001038 ethylene copolymer Polymers 0.000 claims description 3
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 3
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 3
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 3
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 3
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 3
- 229920005646 polycarboxylate Polymers 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910001388 sodium aluminate Inorganic materials 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- 229940095064 tartrate Drugs 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 230000008602 contraction Effects 0.000 abstract description 2
- 239000003469 silicate cement Substances 0.000 abstract 4
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 229910021487 silica fume Inorganic materials 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Abstract
The invention discloses a high performance cement-base self-leveling mortar. The mortar is characterized by comprising cement, an auxiliary gel material, fine aggregate, a filling material, an additive, and water; wherein the cement is common silicate cement and sulphoaluminate-silicate cement, the auxiliary gel material comprises mineral slag, fly ash, silica fume, and gypsum, and the ratio of common silicate cement to sulphoaluminate-silicate cement to gypsum is equal to 1:0.2-0.6:0.1-0.4. The mortar has a self-leveling function without vibration, so the surface flatness is very high. The curing speed of the mortar is very quick, and after two hours, the strength of the mortar can meet the requirements of subsequent construction. Moreover the mortar has the advantages of low contraction rate, good volume stability, good surface wear resistance, and high compression strength.
Description
Technical field
The present invention relates to a kind of concrete base building material, relate in particular to a kind of high-performance cement based self-leveling mortar.
Background technology
Cement-based self-leveling mortar is comprised of gelling material, fine aggregate, filler and admixture etc., adds a kind of self-leveling material after water with high workability.It has good mobility and Self-leveling function, and energy rapid solidification, in the short period of time, just can on floor material, construct, bonding firmly with substrate, and has the superperformances such as ultimate compression strength height.In recent years, not only on self-leveling terrace ground, there is application widely, on as whole finishing material, also obtained larger development.Yet, the technological deficiencies such as cement-based self-leveling mortar also exists shrinkage cracking, hollowing peeling, wears no resistance in engineering application, surface finish is not good, strength development is slow, urgent need is carried out improvement and perfection to its performance, for better broader applications provide technical support.
High-performance cement based self-leveling mortar is a kind of floor material of environment-friendly energy-saving, there is the advantages such as operating efficiency is high, Self-leveling, strength development is fast, surfacing is good, can be widely used in underground parking, warehouse, factory floor, market, exhibition room, office building, commercial and residential building etc., be that floor material develops new direction.
Summary of the invention
The object of the present invention is to provide a kind of high-performance cement based self-leveling mortar, this material has that vibration-free self-flowing is flat, surfacing, fast hard, the premium properties such as shrinking percentage is low, wear resistance is good.
For achieving the above object, the present invention realizes by the following technical solutions: a kind of high-performance cement based self-leveling mortar, comprise cement, complementary gelling material, fine aggregate, filler, admixture and water, wherein, described cement is ordinary Portland cement and sulphur aluminosilicate cement, described complementary gelling material comprises slag, flyash, silicon ash and gypsum, and between ordinary Portland cement, aluminosulfate cement and gypsum three, quality proportion relation is 1 ﹕ 0.2 ~ 0.6 ﹕ 0.1 ~ 0.4.
Between complementary gelling material of the present invention, filler and fine aggregate three, quality proportion relation is 1 ﹕ 1～2 ﹕ 2 ~ 6.
Admixture of the present invention comprises water-holding agent, water reducer, hardening accelerator, retardant, redispersable latex powder and fiber.
As one embodiment of the present of invention, described high-performance cement based self-leveling mortar comprises following parts by weight of component: 20 ~ 30 parts of ordinary Portland cements, 10 ~ 15 parts of sulphur aluminosilicate cement, 8 ~ 12 parts, flyash, 0 ~ 8 part, slag, 0 ~ 6 part of silicon ash, 5 ~ 10 parts, gypsum, 45 ~ 65 parts of fine aggregates, 20 ~ 30 parts of fillers, 0.1 ~ 0.8 part of water reducer, 0.02 ~ 0.05 part of water-holding agent, 2 ~ 6 parts of redispersable latex powders, 0.2 ~ 3.0 part of hardening accelerator, 0.1 ~ 1.2 part of defoamer, 0.1 ~ 0.3 part of retardant, 0.1 ~ 1.0 part of fiber, 18 ~ 24 parts, water.
The strength grade of described ordinary Portland cement and sulphur aluminosilicate cement is all not less than 42.5 grades, and specific surface area is greater than 4000 cm
2/ g.
Described slag is levigate granulated blast-furnace slag; Described flyash is I level or II level flyash; Described silicon ash specific surface area is greater than 4000 cm
2/ g; Described gypsum is semi-hydrated gypsum or anhydrite.
Described filler is one or both in dicalcium powder and silica powder, and fineness is 300 ~ 450 orders.
Described fine aggregate is quartz sand, and fineness is 60 ~ 130 orders.
Described water-holding agent is at least one in hydroxypropyl methyl cellulose ether and hydroxyethylmethyl-cellulose ether; Described water reducer is polycarboxylate water-reducer dry powder; Described hardening accelerator is one or more mixing in sodium aluminate, Quilonum Retard and anhydrous sodium sulphate; Described defoamer is at least one in silicone based defoamer and polyethers defoamer; Described redispersable latex powder agent is at least one in polyacrylic ester and vinyl acetate and ethylene copolymer; Described retardant is one or more mixing of citric acid, tartrate and Sunmorl N 60S; Described fiber is at least one in polypropylene fibre and wood fibre.
The present invention compared with prior art has the following advantages:
(1) high-performance cement based self-leveling mortar energy vibration-free self-flowing provided by the invention is flat, and the floor surface planeness after construction is very high; The strength development of this mortar is fast, and within 2 hours, intensity can reach follow-up construction requirement, and shrinking percentage is low, and volume stability is good, and surface abrasion resistance is good, and ultimate compression strength is high.
(2) in the present invention, in ordinary Portland cement, aluminosulfate cement and gypsum ternary system, there is good proportion relation.
Because aluminosulfate cement and gypsum have certain expansion, and ordinary Portland cement contraction is larger, therefore between cement-based self-leveling mortar volume stability and ternary system, ratio is closely related, in the present invention by having determined proportion relation between ternary system: 1 ﹕ 0.2 ~ 0.6 ﹕ 0.1 ~ 0.4, low to reach floor material shrinking percentage, the object that volume stability is good.
(3) in the present invention, between complementary gelling material, filler and fine aggregate three, proportion relation is 1 ﹕ 1～2 ﹕ 2 ~ 6, and gelling material specific surface area is greater than 4000 cm
2/ g, filler fineness is 300 ~ 450 orders, fine aggregate fineness is 60 ~ 130 orders.By proportioning and fineness relation between complementary gelling material, filler and fine aggregate three, promote to form good grating system, improve mortar density, add defoamer simultaneously, reduce hole, further increase mortar density, finally improve mortar strength.
(4) in the present invention, aluminosulfate cement and gypsum content are relatively high, ordinary Portland cement content is relatively low, add setting accelerator simultaneously, to promote strength development, within 2 hours, mortar strength can reach follow-up construction requirement, adds retardant to guarantee front 30min degree of mobilization, to meet construction requirement simultaneously.
Embodiment
In order further to understand the present invention, below in conjunction with specific embodiment, illustrate, following each examples of implementation are only for illustrating the present invention but not limitation of the present invention.
In following examples, the strength grade of ordinary Portland cement and sulphur aluminosilicate cement is all not less than 42.5 grades, and specific surface area is greater than 4000 cm
2/ g.Slag is levigate granulated blast-furnace slag.Flyash is I level or II level flyash.Silicon ash specific surface area is greater than 4000 cm
2/ g.Gypsum is semi-hydrated gypsum or anhydrite.Filler is one or both in dicalcium powder and silica powder, and fineness is 300 ~ 450 orders.Fine aggregate is quartz sand, and fineness is 60 ~ 130 orders.Water-holding agent is at least one in hydroxypropyl methyl cellulose ether, hydroxyethylmethyl-cellulose ether.Water reducer is polycarboxylate water-reducer dry powder.Hardening accelerator is one or more mixing in sodium aluminate, Quilonum Retard and anhydrous sodium sulphate.Defoamer is at least one in silicone based defoamer and polyethers defoamer.Redispersable latex powder agent is at least one in polyacrylic ester and vinyl acetate and ethylene copolymer.Retardant is one or more mixing of citric acid, tartrate and Sunmorl N 60S.Fiber is at least one in polypropylene fibre and wood fibre.
In following examples, unit is weight part.
Embodiment 1
30 parts of ordinary Portland cements, 15 parts of sulphur aluminosilicate cement, 8 parts, flyash, 4 parts, slag, 3 parts of silicon ashes, 5 parts, gypsum, 45 parts of fine aggregates, 20 parts of fillers, 0.8 part of water reducer, 0.05 part of water-holding agent, 6 parts of redispersable latex powders, 3.0 parts of hardening accelerator, 1.2 parts of defoamers, 0.3 part of retardant, 1.0 parts of fibers, 18 parts, water.
Embodiment 2
20 parts of ordinary Portland cements, 10 parts of sulphur aluminosilicate cement, 12 parts, flyash, 8 parts, slag, 8 parts, gypsum, 65 parts of fine aggregates, 30 parts of fillers, 0.1 part of water reducer, 0.02 part of water-holding agent, 2 parts of redispersable latex powders, 0.2 part of hardening accelerator, 0.1 part of defoamer, 0.1 part of retardant, 0.1 part of fiber, 24 parts, water.
Embodiment 3
25 parts of ordinary Portland cements, 12 parts of sulphur aluminosilicate cement, 10 parts, flyash, 4 parts of silicon ashes, 10 parts, gypsum, 55 parts of fine aggregates, 25 parts of fillers, 0.5 part of water reducer, 0.03 part of water-holding agent, 4 parts of redispersable latex powders, 1.5 parts of hardening accelerator, 0.8 part of defoamer, 0.2 part of retardant, 0.5 part of fiber, 20 parts, water.
Embodiment 4
26 parts of ordinary Portland cements, 12.5 parts of sulphur aluminosilicate cement, 9 parts, flyash, 4 parts, slag, 4 parts of silicon ashes, 6 parts, gypsum, 48 parts of fine aggregates, 24 parts of fillers, 0.6 part of water reducer, 0.05 part of water-holding agent, 5 parts of redispersable latex powders, 2.0 parts of hardening accelerator, 1.0 parts of defoamers, 0.3 part of retardant, 0.4 part of fiber, 20 parts, water.
Embodiment 5
24 parts of ordinary Portland cements, 13 parts of sulphur aluminosilicate cement, 10 parts, flyash, 5 parts of silicon ashes, 7 parts, gypsum, 60 parts of fine aggregates, 27 parts of fillers, 0.4 part of water reducer, 0.04 part of water-holding agent, 5 parts of redispersable latex powders, 0.8 part of hardening accelerator, 0.6 part of defoamer, 0.3 part of retardant, 0.3 part of fiber, 21 parts, water.
Embodiment 6
22 parts of ordinary Portland cements, 11 parts of sulphur aluminosilicate cement, 8 parts, flyash, 5 parts, slag, 8 parts, gypsum, 52 parts of fine aggregates, 23 parts of fillers, 0.6 part of water reducer, 0.03 part of water-holding agent, 4 parts of redispersable latex powders, 1.0 parts of hardening accelerator, 0.6 part of defoamer, 0.2 part of retardant, 0.5 part of fiber, 23 parts, water.
Claims (10)
1. a high-performance cement based self-leveling mortar, it is characterized in that, comprise cement, complementary gelling material, fine aggregate, filler, admixture and water, wherein, described cement is ordinary Portland cement and sulphur aluminosilicate cement, described complementary gelling material comprises slag, flyash, silicon ash and gypsum, and between ordinary Portland cement, aluminosulfate cement and gypsum three, proportion relation is 1 ﹕ 0.2 ~ 0.6 ﹕ 0.1 ~ 0.4.
2. high-performance cement based self-leveling mortar according to claim 1, is characterized in that, between described complementary gelling material, filler and fine aggregate three, proportion relation is 1 ﹕ 1 ~ 2 ﹕ 2 ~ 6.
3. high-performance cement based self-leveling mortar according to claim 1 and 2, it is characterized in that, the component that comprises following weight part: 20 ~ 30 parts of ordinary Portland cements, 10 ~ 15 parts of sulphur aluminosilicate cement, 8 ~ 12 parts, flyash, 4 ~ 8 parts, slag, 3 ~ 6 parts of silicon ashes, 5 ~ 10 parts, gypsum, 45 ~ 65 parts of fine aggregates, 20 ~ 30 parts of fillers, 0.1 ~ 0.8 part of water reducer, 0.02 ~ 0.05 part of water-holding agent, 2 ~ 6 parts of redispersable latex powders, 0.2 ~ 3.0 part of hardening accelerator, 0.1 ~ 1.2 part of defoamer, 0.1 ~ 0.3 part of retardant, 0.1 ~ 1.0 part of fiber, 18 ~ 24 parts, water.
4. high-performance cement based self-leveling mortar according to claim 3, is characterized in that, the strength grade of described ordinary Portland cement and sulphur aluminosilicate is all not less than 42.5 grades, and specific surface area is all greater than 4000 cm
2/ g.
5. high-performance cement based self-leveling mortar according to claim 3, is characterized in that, described slag is levigate granulated blast-furnace slag; Described flyash is I level or II level flyash; The specific surface area of described silicon ash is greater than 4000 cm
2/ g; Described gypsum is semi-hydrated gypsum or anhydrite.
6. high-performance cement based self-leveling mortar according to claim 3, is characterized in that, described filler is at least one in dicalcium powder, silica powder, and fineness is 300 ~ 450 orders.
7. high-performance cement based self-leveling mortar according to claim 3, is characterized in that, described fine aggregate is quartz sand, and fineness is 60 ~ 130 orders.
8. high-performance cement based self-leveling mortar according to claim 3, is characterized in that: described water-holding agent is at least one in hydroxypropyl methyl cellulose ether and hydroxyethylmethyl-cellulose ether; Described water reducer is polycarboxylate water-reducer dry powder.
9. a kind of high-performance cement based self-leveling mortar according to claim 3, is characterized in that: described hardening accelerator is one or more mixing in sodium aluminate, Quilonum Retard and anhydrous sodium sulphate; Described defoamer is at least one in silicone based defoamer and polyethers defoamer; Described redispersable latex powder agent is at least one in polyacrylic ester and vinyl acetate and ethylene copolymer.
10. a kind of high-performance cement based self-leveling mortar according to claim 3, is characterized in that: described retardant is one or more mixing in citric acid, tartrate and Sunmorl N 60S; Described fiber is at least one in polypropylene fibre and wood fibre.
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| CN201410275035.6A CN104108918B (en) | 2014-06-19 | 2014-06-19 | A kind of high-performance cement based self-leveling mortar |
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| CN201410275035.6A CN104108918B (en) | 2014-06-19 | 2014-06-19 | A kind of high-performance cement based self-leveling mortar |
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| CN104108918B CN104108918B (en) | 2016-08-24 |
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