CN110372271A - A kind of dry mixing plastering mortar and preparation method thereof - Google Patents
A kind of dry mixing plastering mortar and preparation method thereof Download PDFInfo
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- CN110372271A CN110372271A CN201910785587.4A CN201910785587A CN110372271A CN 110372271 A CN110372271 A CN 110372271A CN 201910785587 A CN201910785587 A CN 201910785587A CN 110372271 A CN110372271 A CN 110372271A
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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
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- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of dry mixing plastering mortars, belong to the technical field of construction material, and in parts by weight, preparing raw material includes cement, fine aggregate, additive；Wherein fine aggregate includes natural siliceous sand, river sand, fine sand；Additive includes wood fibre, super absorbent resin, methylcellulose；The invention further relates to a kind of preparation methods of dry mixing plastering mortar, comprising the following steps: S1: additive preparation；S2: dry-mixed plastering mortar is prepared；The workability of plastering mortar can be improved in the present invention, reduces a possibility that hollowing, cracking occur for plastering mortar.
Description
Technical field
The present invention relates to the technical fields of construction material, more particularly, to a kind of dry mixing plastering mortar and preparation method thereof.
Background technique
With the continuous propulsion that China's construction material is reformed, a large amount of novel wall material is widely used, example
Such as plastering mortar.Plastering mortar is to brush to play a kind of mortar general designation that is levelling or providing protection on building basal plane.
With the development of society, people increasingly pay attention to the quality of materials for wall, after long-time service, dry-mixed plastering mortar by
In workability poor phenomena such as will lead to hollowing, cracking.
Summary of the invention
The purpose of the present invention one is to provide a kind of dry mixing plastering mortar, improves the workability of plastering mortar, reduces plastering sand
A possibility that hollowing, cracking, occurs for slurry.
Above-mentioned purpose of the invention has the technical scheme that
A kind of dry mixing plastering mortar, in parts by weight, preparing raw material includes 140-220 parts of cement, fine aggregate 750-880
Part, 10-30 parts of additive；Wherein fine aggregate includes 200-350 parts of natural siliceous sand, 120-180 parts of river sand, fine sand 340-450
Part；Additive includes 8-15 parts of wood fibre, 6-12 parts of super absorbent resin, 2-8 parts of methylcellulose.
The present invention is further arranged to: in parts by weight, the additive further includes 2-9 parts of sodium gluconate.
The present invention is further arranged to: in parts by weight, the additive includes 10-13 parts of wood fibre, high suction
8-10 parts of water-base resin, 4-6 parts of methylcellulose, 4-7 parts of sodium gluconate.
By using above-mentioned technical proposal, the workability of cement slurry sand generally includes cohesiveness, water-retaining property and mobility three
Aspect.
Cohesiveness, which refers to, certain cohesive strength between the composition material of plastering mortar, will not occur in the construction process point
The performance of layer and segregation phenomenon, cohesiveness react the uniformity of mortar mixture.If mixture cohesiveness is bad, coagulation is caused
Phenomena such as soil is uneven, is easy to cause honeycomb or cavity, in general, the influence factor of cohesiveness is cement mortar rate.
Water-retaining property refers to that mortar has certain water holding capacity, will not occur the property of serious excreting water phenomenon in the construction process
Can, water-retaining property reflects the stability of mortar mixture, easily forms water-permeable passage inside the mortar of poor water retention property, influences concrete
Density, and reduce the intensity and durability of concrete.
Mobility refers to that mortar can generate flowing under the action of self weight or machinery are vibrated, and uniformly densely fills up template
Performance.
Workability is the comprehensive embodiment of cohesiveness, water-retaining property, mobility, and cohesiveness, water-retaining property and mobility both mutually interconnected
System is commonly present contradiction again, therefore, if thinking the workability of improvement mortar, needs to be started with by cohesiveness, water-retaining property, mobility.
Fine aggregate selects the mixture of natural siliceous sand, river sand and fine sand, and natural siliceous sand can form stronger with cement
Cohesive force, the anti-folding of strengthening slurry, compression strength.River sand be natural stone in its natural state, active force through water is anti-for a long time
Multiple collision, friction generate, and cleaner and source is wide, and surface has certain slickness, and plastering sand is made with cement mixing
When slurry, the gap between cement and fine aggregate can be reduced；By the mortar cohesiveness and good water-retaining property of fine sand mixing.By strictly controlling
The ratio of quartz sand processed, river sand and fine sand further improves the workability of mortar, so that cohesiveness and water-retaining property are promoted.
For the water retention property for further increasing mortar, wood fibre, super absorbent resin and first are added in raw material in preparing
Base cellulose.The structural viscosity of wood fibre can make slurry keep preferable uniformity, stablize and reduce the contraction of system and swollen
It is swollen, also have very strong antifreeze and anti-thermal energy power, reduction mortar under the influence of the temperature contraction or expansion a possibility that.Wooden fibre
Dimension, which is scattered in cement, can form three-D space structure, and can adsorb the moisture of 6-8 times of self weight, and this structure and feature can be improved
Workability energy, operating characteristics and the antiskid of mortar fall performance, accelerate speed of application.The water-retaining property of methylcellulose is more excellent, but
Methylcellulose has a significant effect to the application property of mortar, and wood fibre have preferable water-retaining property while, have it is more excellent
Different operating characteristics and antiskid fall performance, just be combined with each other, and do not influence application property while improving water-retaining property again.
Super absorbent resin can absorb hundreds times of own wt or thousands of times of deionized water, have high-moisture-retention, and
With certain thermal stability, the water retention property of mortar can be effectively improved, to improve the workability of mortar.
In addition to this, sodium gluconate can inhibit cement granules to agglomerate or be attracted to hydrated cementitious formation after penetrating into
Cenotype particle surface delays the formation of the aquation and structure of cement, extends the setting time of mortar, can extend Use Limitation, from
And it is able to satisfy the requirement of longer construction time.
In conclusion passing through ratio and natural siliceous sand, river sand, fine sand between strict control cement and additive
Between ratio, obtain workability can good mortar, and wood fibre, methylcellulose and high water absorption are added in raw material in preparing
Property resin improves the water retention property of mortar, to further increase the workability of mortar.
The present invention is further arranged to: in parts by weight, preparing raw material includes 160-200 parts of cement, fine aggregate
750-880 parts, 15-22 parts of additive.
The present invention is further arranged to: in parts by weight, the cement includes 110-160 parts of slag cements, volcano
90-130 parts of ash concrete.
By using above-mentioned technical proposal, the mobility of slag cements is big, but cohesiveness is poor, the mobility of pozzolan cement
It is small, but cohesiveness is small, the proportion of strict control pozzolan cement and slag cements, to reach optimal mobility and cohesiveness,
So as to improve the workability of mortar.
The present invention is further arranged to: the partial size of the fine aggregate is 1-3mm.
The present invention is further arranged to: in parts by weight, the fine aggregate include 250-300 parts of natural siliceous sand,
140-160 parts of river sand, 380-420 parts of fine sand.
The purpose of the present invention two is to provide a kind of preparation method of dry mixing plastering mortar, comprising the following steps:
S1: additive preparation: in parts by weight, each component in additive being uniformly mixed, spare；
S2: it prepares dry-mixed plastering mortar: toasting 30-45min at 40-50 DEG C after cement and fine aggregate are mixed, then grind 10-
20min, being eventually adding additive and being uniformly mixed can be obtained dry-mixed plastering mortar.
By using above-mentioned technical proposal, additive is added after cement and fine aggregate are uniformly mixed and are ground, is avoided
The three-dimensional structure of super absorbent resin and wood fibre is destroyed, during the grinding process convenient for keeping the workability of mortar.
In conclusion advantageous effects of the invention are as follows:
1. pass through the proportion of strict control pozzolan cement and slag cements, to reach optimal mobility and cohesiveness, thus
Improve the workability of mortar；Several fine aggregates mutually made up are selected again and the ratio of strict control cement and fine aggregate, to reach
To optimal combination, the preferable mortar of workability is obtained；
2. the addition of wood fibre, super absorbent resin and methylcellulose can effectively improve the water-retaining property of mortar, thus into one
Step improves the workability of mortar.
Specific embodiment
Embodiment 1
A kind of preparation method of dry-mixed mortar, comprising the following steps:
S1: additive preparation: in parts by weight, by 8 parts of wood fibre, 6 parts of super absorbent resin, 2 parts of methylcellulose,
Additive is made in 2 parts of sodium gluconate after mixing, spare；
S2: dry-mixed plastering mortar is prepared: in parts by weight, after 140 parts of cement, 750 parts of fine aggregate are mixed at 40 DEG C
30min is toasted, then grinds 10min, being eventually adding 10 parts of additive and being uniformly mixed can be obtained dry-mixed plastering mortar；Wherein,
Fine aggregate includes 200 parts of natural siliceous sand, 120 parts of river sand, 340 parts of fine sand, and the partial size of fine aggregate is 1mm.
Embodiment 2
A kind of preparation method of dry-mixed mortar, comprising the following steps:
S1: additive preparation: in parts by weight, by 12 parts of wood fibre, 9 parts of super absorbent resin, methylcellulose 5
Additive is made in part, 5 parts of sodium gluconate after mixing, spare；
S2: dry-mixed plastering mortar is prepared: in parts by weight, after 180 parts of cement, 820 parts of fine aggregate are mixed at 45 DEG C
35min is toasted, then grinds 10min, being eventually adding 18 parts of additive and being uniformly mixed can be obtained dry-mixed plastering mortar；Wherein,
Fine aggregate includes 280 parts of natural siliceous sand, 150 parts of river sand, 400 parts of fine sand, and the partial size of fine aggregate is 2mm.
Embodiment 3
A kind of preparation method of dry-mixed mortar, comprising the following steps:
S1: additive preparation: in parts by weight, by 15 parts of wood fibre, 12 parts of super absorbent resin, methylcellulose 8
Additive is made in part, 9 parts of sodium gluconate after mixing, spare；
S2: dry-mixed plastering mortar is prepared: in parts by weight, after 220 parts of cement, 880 parts of fine aggregate are mixed at 50 DEG C
45min is toasted, then grinds 20min, being eventually adding 30 parts of additive and being uniformly mixed can be obtained dry-mixed plastering mortar；Wherein,
Fine aggregate includes 350 parts of natural siliceous sand, 180 parts of river sand, 450 parts of fine sand, and the partial size of fine aggregate is 3mm.
Embodiment 4
A kind of preparation method of dry-mixed mortar, the difference from example 2 is that, in parts by weight, additive includes in S1
11 parts of wood fibre, 8.4 parts of super absorbent resin, 4.6 parts of methylcellulose, 4.3 parts of sodium gluconate.
Embodiment 5
A kind of preparation method of dry-mixed mortar, the difference from example 2 is that, in parts by weight, additive includes in S1
12.4 parts of wood fibre, 9.5 parts of super absorbent resin, 5.2 parts of methylcellulose, 6 parts of sodium gluconate.
Embodiment 6
A kind of preparation method of dry-mixed mortar, the difference from example 2 is that, in parts by weight, cement is 170 in S2
Part, additive is 16 parts.
Embodiment 7
A kind of preparation method of dry-mixed mortar, the difference from example 2 is that, in parts by weight, cement is 190 in S2
Part, additive is 20 parts.
Embodiment 8
A kind of preparation method of dry-mixed mortar, the difference from example 2 is that, in parts by weight, in S2, cement includes mine
110 parts of slag cement, 130 parts of pozzolan cement.
Embodiment 9
A kind of preparation method of dry-mixed mortar, the difference from example 2 is that, in parts by weight, cement includes slag water
160 parts of mud, 90 parts of pozzolan cement.
Embodiment 10
A kind of preparation method of dry-mixed mortar, the difference from example 2 is that, in parts by weight, in S3, fine aggregate includes
230 parts of natural siliceous sand, 130 parts of river sand, 360 parts of fine sand.
Embodiment 11
A kind of preparation method of dry-mixed mortar, the difference from example 2 is that, in parts by weight, in S3, fine aggregate includes
230 parts of natural siliceous sand, 335 parts of river sand, 440 parts of fine sand.
Comparative example 1
Selecting notification number is the Chinese patent of CN103332893B, discloses a kind of dry mixing plastering mortar.
Performance detection detects the water retention of mortar, flowing according to the test method in JG/T 230-2007 " premixing mortar "
Property and setting time；Referring to the 14d tensile bond strength of the 8 type matrix methods detection mortar of Gong Xiaojian etc.；According to the rule in JGJ/T70
Regular inspection surveys 28d shrinking percentage, and testing result is as follows: testing result is as follows:
1 embodiment 1-6 performance test results of table
The performance test results of 2 embodiment 7-11 ratio 1 of table
Interpretation of result:
Can be seen that by table 1, table 2, embodiment 1-11 water rate can reach 94.0% or more, and water retention property is excellent, much higher than pair
The water retention property of ratio 1 illustrates that the addition of wood fibre, super absorbent resin and methylcellulose can effectively improve the guarantor of mortar
Aqueous energy；Secondly, comparative example 4-5 and other embodiments can be found, the water retention of embodiment 4,5 is more prominent, works as addition
Wood fibre is 10-13 parts in agent, super absorbent resin is 8-10 parts, methylcellulose is 4-6 parts, sodium gluconate 4-7
Part when, the water retention property of mortar is most excellent, illustrate wood fibre, super absorbent resin, methylcellulose, between sodium gluconate
Proportion it is critically important.
After the ratio of comparative example 6-7 and other embodiments discovery, change cement and additive, it will to the comprehensive of mortar
It closes performance to impact, when cement is 160-200 parts, additive is 15-22 parts, the water retention and mobility of mortar are
It is promoted；Comparative example 8-9 and other embodiments can be seen that, when cement selection slag cements and pozzolan cement, mobility and
Caking property is preferable；Comparative example 10-11 and other embodiments can be seen that the stretch-proof adhesion strength of mortar is more prominent, explanation
The stretch-proof adhesion strength of mortar can be improved in ratio in strict control fine aggregate between natural siliceous sand, river sand and fine sand.
In addition, can be seen that by testing result, embodiment 1-11 stretches adhesive property also superior to comparative example 1, illustrates using invention
Proportion prepared by mortar there is preferable workability, while adhesion strength also with higher.
In conclusion the ratio between ratio and additive and cement that the present invention passes through each component in strict control additive
Example and natural siliceous sand, river sand, the ratio between fine sand, can get the mortar that workability can be good, and wood fibre, methyl are fine
Dimension element and super absorbent resin can effectively improve the water retention of mortar, to further increase the workability of mortar, improve mortar
Performance.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (8)
1. a kind of dry mixing plastering mortar, it is characterised in that: in parts by weight, prepare raw material include 140-220 parts of cement, it is thin
750-880 parts of aggregate, 10-30 parts of additive；Wherein fine aggregate include 200-350 parts of natural siliceous sand, 120-180 parts of river sand,
340-450 parts of fine sand；Additive includes 8-15 parts of wood fibre, 6-12 parts of super absorbent resin, 2-8 parts of methylcellulose.
2. a kind of dry mixing plastering mortar according to claim 1, it is characterised in that: in parts by weight, the addition
Agent further includes 2-9 parts of sodium gluconate.
3. a kind of dry mixing plastering mortar according to claim 2, it is characterised in that: in parts by weight, the addition
Agent includes 10-13 parts of wood fibre, 8-10 parts of super absorbent resin, 4-6 parts of methylcellulose, 4-7 parts of sodium gluconate.
4. a kind of dry mixing plastering mortar according to claim 3, it is characterised in that: in parts by weight, prepare raw material
Including 160-200 parts of cement, 750-880 parts of fine aggregate, 15-22 parts of additive.
5. a kind of dry mixing plastering mortar according to claim 4, it is characterised in that: in parts by weight, the cement
Including 110-160 parts of slag cements, 90-130 parts of pozzolan cement.
6. a kind of dry mixing plastering mortar according to claim 4, it is characterised in that: the partial size of the fine aggregate is 1-3mm.
7. a kind of dry mixing plastering mortar according to claim 6, it is characterised in that: in parts by weight, the thin bone
Material includes natural siliceous sand 250-300 parts, 140-160 parts of river sand, 380-420 parts of fine sand.
8. a kind of preparation method of dry mixing plastering mortar described in -7 any one according to claim 1, which is characterized in that including
Following steps:
S1: additive preparation: in parts by weight, each component in additive being uniformly mixed, spare；
S2: it prepares dry-mixed plastering mortar: toasting 30-45min at 40-50 DEG C after cement and fine aggregate are mixed, then grind 10-
20min, being eventually adding additive and being uniformly mixed can be obtained dry-mixed plastering mortar.
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| CN201910785587.4A CN110372271A (en) | 2019-08-23 | 2019-08-23 | A kind of dry mixing plastering mortar and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479628A (en) * | 2020-12-15 | 2021-03-12 | 广东龙湖科技股份有限公司 | Building mortar additive and plastering mortar containing same |
| CN115925361A (en) * | 2022-12-16 | 2023-04-07 | 浙江桐化建材股份有限公司 | Dry-mixed plastering mortar and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08157823A (en) * | 1994-10-07 | 1996-06-18 | Nippon Shokubai Co Ltd | Cb mortar composition and suppression of permeation of cb mortar and fixing foundation structure in soil |
| CN108975828A (en) * | 2018-09-06 | 2018-12-11 | 福建坪方数建筑材料有限公司 | A kind of fired brick powder premixing dry-mixed mortar |
| CN109180129A (en) * | 2018-11-16 | 2019-01-11 | 石家庄铁道大学 | It is a kind of not disperse back cover material and its construction technology under water |
-
2019
- 2019-08-23 CN CN201910785587.4A patent/CN110372271A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08157823A (en) * | 1994-10-07 | 1996-06-18 | Nippon Shokubai Co Ltd | Cb mortar composition and suppression of permeation of cb mortar and fixing foundation structure in soil |
| CN108975828A (en) * | 2018-09-06 | 2018-12-11 | 福建坪方数建筑材料有限公司 | A kind of fired brick powder premixing dry-mixed mortar |
| CN109180129A (en) * | 2018-11-16 | 2019-01-11 | 石家庄铁道大学 | It is a kind of not disperse back cover material and its construction technology under water |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479628A (en) * | 2020-12-15 | 2021-03-12 | 广东龙湖科技股份有限公司 | Building mortar additive and plastering mortar containing same |
| CN115925361A (en) * | 2022-12-16 | 2023-04-07 | 浙江桐化建材股份有限公司 | Dry-mixed plastering mortar and preparation method thereof |
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Effective date of abandoning: 20211231 |