CN105271983A - Modified stone flour dry mixed mortar and preparation method thereof - Google Patents
Modified stone flour dry mixed mortar and preparation method thereof Download PDFInfo
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- CN105271983A CN105271983A CN201510635041.2A CN201510635041A CN105271983A CN 105271983 A CN105271983 A CN 105271983A CN 201510635041 A CN201510635041 A CN 201510635041A CN 105271983 A CN105271983 A CN 105271983A
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Abstract
The invention discloses a modified stone flour dry mixed mortar and a preparation method thereof. The method comprises the following steps: modifying stone flour with a sodium formaldehyde sulfoxylate solution under high temperature conditions, gradually adding calcite, cement, a mixed additive and mixed sand, adding a proper amount of water, and stirring until uniformity to obtain the dry mixed mortar. Compared with the prior art, the method adopting the sodium formaldehyde sulfoxylate solution to modify the stone flour has the advantages of increase of the filling ability and the activity of the stone flour, increase of the adhesion force of the mortar, improvement of the compressive strength of the mortar, increase of effective utilization of the stone flour and sodium formaldehyde sulfoxylate, preparation cost reduction and certain economic benefit.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of modification stone flour dry-mixed mortar and preparation method thereof.
Background technology
The main raw material of current production dry-mix has: cement, lime, gypsum, flyash, slag micropowder, sand, admixture etc., the cement of current use is as a kind of important gelling material, be widely used in the engineerings such as civil construction, water conservancy, national defence, and cement output maintains negative growth at present, and the mortar to be prepared by cement in use, easily occurs the phenomenons such as hollowing.
Stone flour is the waste produced in stone recovery process, a large amount of stone flours causes certain pollution to environment, be mainly used in rubber, papermaking, coating at present, mould aluminium section bar, pottery, cement, glass, smelting, refractory materials, medicine, food, daily-use chemical industry, makeup, technique building and the production field such as flawless finish finishing.The acting in conjunction of the filling effect of stone flour, nucleus effect, active effect, water suction effect and shape effect, concrete performance can be improved, but at present the use of stone flour is still in the application of comparison basis, therefore to research and the further raising of processing technology needs of dry-mix.
Summary of the invention
The object of the invention is for existing problem, provide a kind of modification stone flour dry-mixed mortar and preparation method thereof.
The present invention is achieved by the following technical solutions: a kind of modification stone flour dry-mixed mortar, is made up by weight, cement 15-20 part, stone flour 5-10 part, calcite 2-4 part, rongalite 2-5 part, mixed sand 60-65 part, mixed additive 1-2 part of following raw material.
As further improvement of these options, described stone flour is medical stone powder or dicalcium powder, and fineness modulus is 1.8-2.4.
As further improvement of these options, described mixed sand comprises medium sand and fine sand, and the particle diameter of medium sand is 1-2.49mm, and the particle diameter of fine sand is 0.1-0.99mm, and the ratio of mixture of medium sand and fine sand is 3:1-1:1.
As further improvement of these options, described additive comprises hardening accelerator, water-holding agent, hydrophobizing agent and redispersable latex powder, and its quality proportioning is 5:3:1:1.
As further improvement of these options, described hardening accelerator is calcium chloride or calcium formiate, and described water-holding agent is the one in sodium polyacrylate, poly amic acid, starch-grafted propionic salt and polyacrylic acid potassium; Described hydrophobizing agent is stearic acid sodium or Zinic stearas; Described redispersable latex powder is ethene and vinylchlorid and vinyl laurate fat terpolymer rubber powder, acrylate and vinylbenzene instrument bonus point, the one in vinylbenzene and butadiene copolymer rubber powder.
A preparation method for modification stone flour dry-mixed mortar, comprises the following steps:
(1) water of rongalite by its quality 10 times is diluted, add in stone flour, heated solution to 180 DEG C, stir 20-40 minute, terminate rear filtration, use clean water post-drying, obtain modification stone flour;
(2) calcite is used pulverizer grinding, cross 150-180 mesh sieve;
(3) by above-mentioned gained modification stone flour, in calcite, add cement and mixed additive, after uniform stirring 5-15 minute, add mixed sand, after stirring, add the water of total mass 20% again, puddle evenly, obtain modification stone flour dry-mixed mortar.
The present invention has the following advantages compared to existing technology: use rongalite solution to carry out modification to stone flour, fillibility and the activity of stone flour can be increased, increase the cohesive force of mortar, improve the ultimate compression strength of mortar, add the effective utilization to stone flour and formaldehyde sodium sulfoxylate, reduce preparation cost, there is certain economic benefit.
Embodiment
Embodiment
A kind of modification stone flour dry-mixed mortar, is made up of following raw material, cement 18 parts, stone flour 10 parts, 3 parts, calcite, rongalite 4 parts, mixed sand 63 parts, mixed additive 2 parts by weight.
Wherein, cement is the common silicate cement of 42.5, stone flour to be fineness modulus be 2.0 dicalcium powder, the ratio of mixture of mixed sand medium sand and fine sand is 2:1.
Described additive comprises hardening accelerator, water-holding agent, hydrophobizing agent and redispersable latex powder, its quality proportioning is 5:3:1:1, wherein hardening accelerator is calcium formiate, water-holding agent is poly amic acid, hydrophobizing agent is Zinic stearas, and redispersable latex powder is ethene and vinylchlorid and vinyl laurate fat terpolymer rubber powder.
Each raw material all can be buied by market above.
The preparation method of modification stone flour dry-mixed mortar in the present invention, comprises the following steps:
(1) water of rongalite by its quality 10 times is diluted, add in stone flour, heated solution to 180 DEG C, stir 20-40 minute, terminate rear filtration, use clean water post-drying, obtain modification stone flour;
(2) calcite is used pulverizer grinding, cross 150-180 mesh sieve;
(3) by above-mentioned gained modification stone flour, in calcite, add cement and mixed additive, after uniform stirring 5-15 minute, add mixed sand, after stirring, add the water of total mass 20% again, puddle evenly, obtain modification stone flour dry-mixed mortar.
After in the present invention, method obtains dry-mixed mortar, at 20-24 DEG C, 24-36 hour is left standstill in the environment of relative humidity > 60%, then by gained mortar at 18-20 DEG C, under the condition of relative humidity > 90%, maintenance is to specifying the length of time, using this mortar as experimental group, separately get and be mixed into control group 1 by Easy dosing each in the present invention, stone flour and rongalite in raw material of the present invention are replaced with cement and mixed sand, be control group 2 after mixing, its respective performances is evaluated and tested, draws following data:
| Project | Time of coagulation (h) | Cohesive strength (MPa) | Water retention (%) | 28d ultimate compression strength (MPa) |
| Experimental group | 5 | 2.28 | 94.5 | 17.2 |
| Control group 1 | 5 | 1.15 | 94.8 | 11.6 |
| Control group 2 | 5 | 1.27 | 94.2 | 12.3 |
Table 1
Can be found out by data in table 1, the interpolation of the white powder of modification effectively can strengthen cohesive strength and the ultimate compression strength of dry-mix, time of coagulation is substantially identical with control group with water retention, simply raw material is replaced into stone flour and rongalite, only maintain certain time of coagulation, white powder modification, all without raising, therefore, just can be reached the effect improving dry-mix correlated performance by cohesive strength and ultimate compression strength.
Claims (6)
1. a modification stone flour dry-mixed mortar, is characterized in that, is made up by weight of following raw material, cement 15-20 part, stone flour 5-10 part, calcite 2-4 part, rongalite 2-5 part, mixed sand 60-65 part, mixed additive 1-2 part.
2. a kind of modification stone flour dry-mixed mortar as claimed in claim 1, it is characterized in that, described stone flour is medical stone powder or dicalcium powder, and fineness modulus is 1.8-2.4.
3. a kind of modification stone flour dry-mixed mortar as claimed in claim 1, it is characterized in that, described mixed sand comprises medium sand and fine sand, and the particle diameter of medium sand is 1-2.49mm, and the particle diameter of fine sand is 0.1-0.99mm, and the ratio of mixture of medium sand and fine sand is 3:1-1:1.
4. a kind of modification stone flour dry-mixed mortar as claimed in claim 1, it is characterized in that, described additive comprises hardening accelerator, water-holding agent, hydrophobizing agent and redispersable latex powder, and its quality proportioning is 5:3:1:1.
5. a kind of modification stone flour dry-mixed mortar as claimed in claim 4, it is characterized in that, described hardening accelerator is calcium chloride or calcium formiate, and described water-holding agent is the one in sodium polyacrylate, poly amic acid, starch-grafted propionic salt and polyacrylic acid potassium; Described hydrophobizing agent is stearic acid sodium or Zinic stearas; Described redispersable latex powder is ethene and vinylchlorid and vinyl laurate fat terpolymer rubber powder, acrylate and vinylbenzene instrument bonus point, the one in vinylbenzene and butadiene copolymer rubber powder.
6. a preparation method for modification stone flour dry-mixed mortar, is characterized in that, comprises the following steps:
(1) water of rongalite by its quality 10 times is diluted, add in stone flour, heated solution to 180 DEG C, stir 20-40 minute, terminate rear filtration, use clean water post-drying, obtain modification stone flour;
(2) calcite is used pulverizer grinding, cross 150-180 mesh sieve;
(3) by above-mentioned gained modification stone flour, in calcite, add cement and mixed additive, after uniform stirring 5-15 minute, add mixed sand, after stirring, add the water of total mass 20% again, puddle evenly, obtain modification stone flour dry-mixed mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510635041.2A CN105271983A (en) | 2015-09-30 | 2015-09-30 | Modified stone flour dry mixed mortar and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510635041.2A CN105271983A (en) | 2015-09-30 | 2015-09-30 | Modified stone flour dry mixed mortar and preparation method thereof |
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| CN105271983A true CN105271983A (en) | 2016-01-27 |
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| CN201510635041.2A Pending CN105271983A (en) | 2015-09-30 | 2015-09-30 | Modified stone flour dry mixed mortar and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105837140A (en) * | 2016-04-26 | 2016-08-10 | 安徽坤隆新型建材有限公司 | Brick making mortar |
| CN106242418A (en) * | 2016-07-12 | 2016-12-21 | 绍兴职业技术学院 | A kind of permeable dry powder and mortar of high-strength light and preparation method thereof |
| WO2020253009A1 (en) * | 2019-06-18 | 2020-12-24 | 广西四维材料科技股份有限公司 | White dry-mixed mortar and construction method therefor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458104A (en) * | 2003-06-04 | 2003-11-26 | 王胜怀 | Polymer dry mixed mortar |
| CN102199024A (en) * | 2011-04-29 | 2011-09-28 | 济南高新区工业废弃物利用研发中心 | Dry-mixed masonry mortar for industrial dust |
| CN104211338A (en) * | 2014-08-28 | 2014-12-17 | 成都市容德建筑劳务有限公司 | Crack-resisting composite mortar |
| CN104844084A (en) * | 2015-04-21 | 2015-08-19 | 济宁跃峰建材科技有限公司 | Building exterior wall inorganic insulation board surface mortar and preparation method and construction technology thereof |
-
2015
- 2015-09-30 CN CN201510635041.2A patent/CN105271983A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458104A (en) * | 2003-06-04 | 2003-11-26 | 王胜怀 | Polymer dry mixed mortar |
| CN102199024A (en) * | 2011-04-29 | 2011-09-28 | 济南高新区工业废弃物利用研发中心 | Dry-mixed masonry mortar for industrial dust |
| CN104211338A (en) * | 2014-08-28 | 2014-12-17 | 成都市容德建筑劳务有限公司 | Crack-resisting composite mortar |
| CN104844084A (en) * | 2015-04-21 | 2015-08-19 | 济宁跃峰建材科技有限公司 | Building exterior wall inorganic insulation board surface mortar and preparation method and construction technology thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105837140A (en) * | 2016-04-26 | 2016-08-10 | 安徽坤隆新型建材有限公司 | Brick making mortar |
| CN106242418A (en) * | 2016-07-12 | 2016-12-21 | 绍兴职业技术学院 | A kind of permeable dry powder and mortar of high-strength light and preparation method thereof |
| CN106242418B (en) * | 2016-07-12 | 2018-06-15 | 绍兴职业技术学院 | A kind of permeable dry powder and mortar of high-strength light and preparation method thereof |
| WO2020253009A1 (en) * | 2019-06-18 | 2020-12-24 | 广西四维材料科技股份有限公司 | White dry-mixed mortar and construction method therefor |
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