CN109095869A - A kind of fast mending mortar and its application firmly - Google Patents
A kind of fast mending mortar and its application firmly Download PDFInfo
- Publication number
- CN109095869A CN109095869A CN201811325756.8A CN201811325756A CN109095869A CN 109095869 A CN109095869 A CN 109095869A CN 201811325756 A CN201811325756 A CN 201811325756A CN 109095869 A CN109095869 A CN 109095869A
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- China
- Prior art keywords
- fast hard
- mending mortar
- mortar
- fast
- water
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of fast hard mending mortar and its applications, including water and following components: 100~150g of ordinary portland cement, 100~150g of sulphate aluminium cement, 10~20g of building gypsum, 60~80g of filler, 10~15g of redispersible type rubber powder, 0.5~1g of lithium carbonate, 1~2g of defoaming agent, 1.5~2.5g of water-reducing agent, 580~680g of fine aggregate.Fast hard repairing mortar of the invention has setting time short, and strength development is fast, high with concrete bonding intensity, and stability is good without cracking and the advantage close with component color.Fast hard repairing unfilled corner mortar of the invention can be with quick-hardening, fast-developing intensity.Presetting period < 30min, pull strength > 1MPa, 28 days compression strength > 50MPa.
Description
Technical field
The present invention relates to a kind of fast hard mending mortar and its applications.
Background technique
Housing industrialization PC component after shaping, needs to demould it lifting, and in this process, because of some reasons
It is damaged (losing angle) to may result in PC concrete members, in order to keep product beautiful and reach quality requirement, needs to it
It is repaired, but existing patching material is long there are setting time, intensity is not high, easy cracking collapses, application property is poor, color difference is big
The disadvantages of, tracing it to its cause is patching material that is ununified, haveing excellent performance.
Summary of the invention
Present invention solves the technical problem that being, existing patching material is long there are setting time, intensity is not high, is easy cracking
It collapses, application property is poor, color difference is big.
The technical scheme is that providing a kind of fast hard mending mortar, including water and following components: normal silicate water
100~150g of mud, 100~150g of sulphate aluminium cement, 10~20g of building gypsum, 60~80g of filler, redispersible type rubber powder
10~15g, 0.5~1g of lithium carbonate, 1~2g of defoaming agent, 1.5~2.5g of water-reducing agent, 580~680g of fine aggregate.
Inorganic coagulation material cement is mainly used, organic redispersable latex powder is blended, improves the flexibility of mortar, is increased
Add adhesion strength, the polymer and the complementary of hydraulic cementing materials Developed fiber strength mechanism increase cohesive strength, cement-based mortar
The compression strength of patching material, flexural strength, wear-resisting can satisfy by the optimization design of formula with the matching of concrete
Property, flexibility, low-shrinkage cracking resistance etc. require.
The present invention obtains micro-expansibility energy, root using ordinary portland cement, sulphate aluminium cement and gypsum ternary system
The ratio of three is adjusted according to the raw material of acquisition to meet microdilatancy and fast hard requirement；Using the condensation of lithium carbonate adjustment mortar
Time and early strength；High fluidity is obtained using water-reducing agent；Using inorganic coagulation material cement, and blending can organically divide again
Dissipate latex powder, improve the flexible of mortar, increase adhesion strength, polymer and hydraulic cementing materials Developed fiber strength mechanism it is mutual
Benefit property increases cohesive strength；The matching of cement-based mortar and concrete can satisfy patching material by the optimization design of formula
Compression strength, flexural strength, wearability, flexibility, low-shrinkage cracking resistance etc. require, by inert filler adjust application property and
Color.
Preferably, the water in fast hard mending mortar is 90-125g.
Preferably, the water-reducing agent is polycarboxylate water-reducer.
It preferably, further include cellulose ether 10-20g in the fast hard mending mortar.Primarily serve the anti-isolation of water-keeping thickening
Effect.High fluidity is obtained using polycarboxylate water-reducer, stability is obtained using low-viscosity cellulose ether, passes through mixing for the two
Amount adjustment meets the requirements mobility with stability.
Preferably, the filler is dry powder and/or dicalcium powder.It is main to play filling, adjust application property and adjust color
Effect.
Preferably, the fine aggregate is river sand or Machine-made Sand, partial size 0.15mm-4.75mm.
Preferably, the fine aggregate is sand in IIth area.
Preferably, in addition to water, by weight percent, the fast hard mending mortar is made of following each component: common silicic acid
Salt cement 10~15%, sulphate aluminium cement 10~15%, building gypsum 1~2%, filler 6~8%, redispersible type rubber powder 1
~1.5%, lithium carbonate 0.05~0.1%, defoaming agent 0.1~0.2%, polycarboxylate water-reducer 0.15~0.25%, aggregate 58~
68%.
Preferably, the mass ratio of ordinary portland cement and sulphate aluminium cement is 1:0.8-1.2.
Preferably, the mass ratio of ordinary portland cement and sulphate aluminium cement is 1:1.
The advantages of by two kinds of ordinary portland cements and sulphate aluminium cement compounding in order to play two kinds of different cement simultaneously,
To obtain rapid condensation requirement strong early.After appropriate sulphate aluminium cement is added in ordinary portland cement, promote
Solidifying early strong phenomenon, this is because the sulphate aluminium cement being added consumes Ca (OH)2, the basicity of cement slurry is reduced, is accelerated
The hydration of calcium silicates, while accelerating hydration rate, anhydrous in sulphate aluminium cement in ordinary portland cement
Calcium sulphoaluminate, which is quickly reacted with gypsum, generates entringite, rapid condensation occurs, the early strength of the mending mortar significantly improves.This
The mass ratio 1:1 of two kinds of cement is preferred.
Ordinary portland cement, sulphate aluminium cement, in gypsum (anhydrite cannot be used) this compound system with silicate
Based on mineral, and what is played a major role to system setting time is to introduce containing the high sulphate aluminium cement of early hydration activity,
The suitable volume of sulphate aluminium cement in compound system, leads to the contraction distortion amount very little of the mending mortar, and entringite
The volume expansion that will appear 2~2.5 times during generation has played the microdilatancy effect of sulphate aluminium cement.
The present invention also provides application of the fast hard mending mortar in precast concrete reparation.
, only need to be die-filling in PC component breakage using fast hard repairing mortar of the invention, then the mending mortar press than
Example directly pours after adding water and stirring, and can demould after a few houres.
The invention has the advantages that fast hard repairing mortar of the invention has setting time short, strength development is fast, and mixed
Solidifying soil adhesive strength is high, and stability is good without cracking and the advantage close with component color.Fast hard repairing unfilled corner mortar of the invention
It can be with quick-hardening, fast-developing intensity.Presetting period < 30min, pull strength > 1MPa, 28 days compression strength > 50MPa.
Specific embodiment
Below with reference to embodiment and comparative example, the invention will be further described, (each component in each embodiment and comparative example
Dosage unit be mass parts, every part be 1kg).
After each component being mixed in the ratio of embodiment (and comparative example), be made mortar, according to corresponding standard testing
All kinds of technical indicators of mortar.
Embodiment 1
Presetting period 28min, final setting time 3h, 28d pull strength 2.1MPa, 28d compression strength 62MPa.
Embodiment 2
Presetting period 25min, final setting time 2.8h, 28d pull strength 2.2MPa, 28d compression strength 60MPa.
Embodiment 3
Presetting period 29min, final setting time 3.2h, 28d pull strength 2.4MPa, 28d compression strength 58MPa.
Comparative example 1
Presetting period 150min, final setting time 5.8h, 28d pull strength 1.3MPa, 28d compression strength 42MPa.
Comparative example 2
Presetting period 45min, final setting time 3.8h, 28d pull strength 1.8MPa, 28d compression strength 48MPa.
As can be seen from the above data, ordinary portland cement 10~15%, sulphate aluminium cement 10~15%, paring stone
Cream 1~2%, filler 6~8%, redispersible type rubber powder 1~1.5%, lithium carbonate 0.05~0.1%, defoaming agent 0.1~
0.2%, polycarboxylate water-reducer 0.15~0.25%, aggregate 58~68%.Within the scope of these, the effect of acquirement is relatively good, condensation
Time is short, and strength development is fast, and adhesive strength is high.
Claims (10)
1. a kind of fast hard mending mortar, which is characterized in that including water and following components: 100~150g of ordinary portland cement, sulphur
100~150g of aluminate cement, 10~20g of building gypsum, 60~80g of filler, 10~15g of redispersible type rubber powder, lithium carbonate
0.5~1g, 1~2g of defoaming agent, 1.5~2.5g of water-reducing agent, 580~680g of fine aggregate.
2. fast hard mending mortar as described in claim 1, which is characterized in that the water in fast hard mending mortar is 90-125g.
3. fast hard mending mortar as described in claim 1, which is characterized in that further include cellulose in the fast hard mending mortar
Ether 10-20g.
4. fast hard mending mortar as described in claim 1, which is characterized in that the filler is dry powder and/or dicalcium powder.
5. fast hard mending mortar as described in claim 1, which is characterized in that the fine aggregate is river sand or Machine-made Sand, partial size
For 0.15mm-4.75mm.
6. fast hard mending mortar as described in claim 1, which is characterized in that the fine aggregate is sand in IIth area.
7. fast hard mending mortar as described in claim 1, which is characterized in that in addition to water, by weight percent, described to repair firmly fastly
Stop-off slurry is made of following each component: ordinary portland cement 10~15%, sulphate aluminium cement 10~15%, building gypsum 1
~2%, filler 6~8%, redispersible type rubber powder 1~1.5%, lithium carbonate 0.05~0.1%, defoaming agent 0.1~0.2% subtracts
Aqua 0.15~0.25%, aggregate 58~68%.
8. fast hard mending mortar as described in claim 1, which is characterized in that the water-reducing agent is polycarboxylate water-reducer.
9. such as the described in any item fast hard mending mortars of claim 1-8, which is characterized in that ordinary portland cement and sulphur aluminic acid
The mass ratio of salt cement is 1:0.8-1.2.
10. application of the fast hard mending mortar described in claim 1-9 in precast concrete reparation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811325756.8A CN109095869A (en) | 2018-11-08 | 2018-11-08 | A kind of fast mending mortar and its application firmly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811325756.8A CN109095869A (en) | 2018-11-08 | 2018-11-08 | A kind of fast mending mortar and its application firmly |
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| CN109095869A true CN109095869A (en) | 2018-12-28 |
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| CN201811325756.8A Pending CN109095869A (en) | 2018-11-08 | 2018-11-08 | A kind of fast mending mortar and its application firmly |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109942270A (en) * | 2019-04-23 | 2019-06-28 | 北京工业大学 | A kind of ocean engineering polymer mending mortar |
| CN110105028A (en) * | 2019-04-24 | 2019-08-09 | 武汉永信美绿建新技术有限公司 | One-component subzero temperature early-strength cement base mending mortar |
| CN110451898A (en) * | 2019-08-16 | 2019-11-15 | 北京市高强混凝土有限责任公司 | A kind of early strong repairing mortar of polymer |
| CN110590299A (en) * | 2019-09-20 | 2019-12-20 | 长春市城市快速路管理维护有限责任公司 | Low-shrinkage wear-resistant cement concrete road rapid repairing material and preparation method thereof |
| CN111302745A (en) * | 2020-04-03 | 2020-06-19 | 杭州修路人科技股份有限公司 | Rapid repairing material in low-temperature environment and application method thereof |
| CN112479669A (en) * | 2020-12-22 | 2021-03-12 | 汝州市东江建筑工业科技有限公司 | Concrete damage repairing cement-based material for prefabricated part and application thereof |
| CN114368958A (en) * | 2021-12-29 | 2022-04-19 | 苏州弗克技术股份有限公司 | Setting adjustment type repair mortar for prefabricated part and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109942270A (en) * | 2019-04-23 | 2019-06-28 | 北京工业大学 | A kind of ocean engineering polymer mending mortar |
| CN110105028A (en) * | 2019-04-24 | 2019-08-09 | 武汉永信美绿建新技术有限公司 | One-component subzero temperature early-strength cement base mending mortar |
| CN110451898A (en) * | 2019-08-16 | 2019-11-15 | 北京市高强混凝土有限责任公司 | A kind of early strong repairing mortar of polymer |
| CN110590299A (en) * | 2019-09-20 | 2019-12-20 | 长春市城市快速路管理维护有限责任公司 | Low-shrinkage wear-resistant cement concrete road rapid repairing material and preparation method thereof |
| CN111302745A (en) * | 2020-04-03 | 2020-06-19 | 杭州修路人科技股份有限公司 | Rapid repairing material in low-temperature environment and application method thereof |
| CN111302745B (en) * | 2020-04-03 | 2022-04-01 | 杭州修路人科技股份有限公司 | Rapid repairing material in low-temperature environment and application method thereof |
| CN112479669A (en) * | 2020-12-22 | 2021-03-12 | 汝州市东江建筑工业科技有限公司 | Concrete damage repairing cement-based material for prefabricated part and application thereof |
| CN114368958A (en) * | 2021-12-29 | 2022-04-19 | 苏州弗克技术股份有限公司 | Setting adjustment type repair mortar for prefabricated part and preparation method thereof |
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Application publication date: 20181228 |