CN103113038A - Mortar water-retaining and thickening agent and preparation method thereof - Google Patents
Mortar water-retaining and thickening agent and preparation method thereof Download PDFInfo
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- CN103113038A CN103113038A CN2013100366530A CN201310036653A CN103113038A CN 103113038 A CN103113038 A CN 103113038A CN 2013100366530 A CN2013100366530 A CN 2013100366530A CN 201310036653 A CN201310036653 A CN 201310036653A CN 103113038 A CN103113038 A CN 103113038A
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Abstract
The invention relates to the technical field of construction materials, particularly a mortar water-retaining and thickening agent and a preparation method thereof. The mortar water-retaining and thickening agent is prepared by mixing and stirring the following raw materials in percentage by mass: 55-75% of kieselguhr, 8-21% of fly ash, 0.4-3% of starch ether, 3-8% of cellulose ether, 0.4-3% of thixotropy lubricant, 1.5-5% of guar gum ether and 1-5% of water reducing agent. The water-retaining and thickening agent in the prior art is generally an inorganic mineral or air entraining agent type. The water-retaining and thickening agent provided by the invention has favorable workability, can satisfy construction operations for various steps in the use process, and enhances the construction efficiency. Even in coastal areas where people uses desalted sea sand in mortar, the surface of the mortar using the water-retaining and thickening agent can not generate the phenomenon of salting precipitation, thereby enhancing the durability of the buildings. The water-retaining and thickening agent has the advantages of favorable plasticity reduction property, crack resistance and seepage resistance.
Description
Technical field:
What the present invention relates to is building material technical field, specifically, relates to a kind of mortar water-retaining admixture and preparation method thereof.
Background technology:
In recent years; due to energy dilemma and environmental pollution; people's environmental protection and energy saving consciousness constantly strengthens; especially in building material field; large because of its power consumption, involve a wide range of knowledge, country comprises also that to this relevant a series of relevant industrial and covil construction environmental protection, energy-saving act issued and implemented the business sends [2007] No. 205 elsewhere about forbid Site mortar notice at urban; the Site of namely forbidding masonry mortar, motar must use premixing mortar.Therefore premixing mortar develops rapidly in the whole nation, and existing more than 300 the premixing mortar manufacturing enterprise of China is constructed and put into operation at present, makes the correlation technique of premixing mortar seem more and more important.Compare with traditional mortar compounding process, one of technological core of premixing mortar is grout additive, and it has determined quality, cost and the use properties of mortar.also can say, whether premixing mortar has the market competitiveness, its core depends on the use of grout additive, and grout additive also claims the mortar water-retaining admixture, problem-workability of mortar water-retaining admixture ubiquity current on existing market is poor, described workability refers to newly mix sand-cement slurry and is easy to (the stirring of each operation constructing operation, transportation, pouring, tamping etc.) also quality can be obtained even, the performance that moulding is closely knit, the workability that also claims mortar, it is a comprehensive technical feature, it is closely related with construction, generally included mobility, the implication of three aspects such as water-retentivity and cohesiveness.Described mobility refers to fresh mortar under deadweight or the machinery effect of vibrating, and can produce mobilely, and resistance is little and be conducive to the performance of mechanical injection operation.Mobility reflects the rare thick degree of mixture.If the mortar mixture is too dried thick, poor fluidity, be difficult to vibration compacting; If mixture is excessively rare, good fluidity, but the laminated segregation phenomenon easily appears.Major influence factors is the mortar water consumption, and in mortar, whether the grating of aggregate is reasonable, also depends on the quality of water-keeping thickening material.Described water-retentivity refers to have certain water retention capacity at fresh mortar, in construction process, and the performance of the serious excreting water phenomenon of unlikely generation.Water-retentivity reflection mortar stability of mixtures.The inner water-permeable passage that easily forms of the mortar of poor water retention property affect the density of mortar, easily produces the phenomenon of Qinshui, segregation, affects the application property of mortar, and intensity and the weather resistance of reduction mortar.Major influence factors is the quality of cement type, adulterant consumption and fineness and water-keeping thickening material.Described cohesiveness refers between the composition material of fresh mortar, certain cohesion is arranged, in construction process, and unlikely generation layering and segregation phenomenon.The homogeneity of cohesiveness reflection mortar mixture, the parcel of gelling material to aggregate.If mortar mixture cohesiveness is bad, gather materials in mortar and easily separate with grout, cause the mortar precipitation, constructional difficulties, the quality problems such as coat of plaster surface dusting.Major influence factors is the quality of mortar mix ratio and mortar water-retaining admixture.The mortar water-retaining admixture that workability is poor, in use can't satisfy each operation constructing operation, reduced operating efficiency, especially in the coastland, after people use desalination, extra large sand is prepared mortar, general water-retaining admixture can't overcome that mortar surface occurs analyses the salt phenomenon, and therefore " the white hair " that namely is commonly called as reduced the weather resistance of buildings.
Summary of the invention:
The technical problem to be solved in the present invention is, provides a kind of workability good, overcomes extra large sand and analyses mortar water-retaining admixture of salt and preparation method thereof.
For solving the problems of the technologies described above, the present invention adopts a kind of like this mortar water-retaining admixture: mix after its is mixed by the raw material of following mass ratio and form: diatomite 55%-75%, flyash 8%-21%, starch ethers 0.4%-3%, ether of cellulose 3%-8%, thixotroping lubricant 0.4-3%, guar gum ether 1.5%-5%, water reducer 1%-5%.
As preferably, the mass ratio of described each raw material is diatomite 62%-74%, flyash 10%-19%, starch ethers 0.5%-2%, ether of cellulose 4%-7%, thixotroping lubricant 0.5-2%, guar gum ether 2%-4%, water reducer 1.5%-4% compares with traditional lime, the mortar additive of bleed class, workability is good, cohesive strength is higher, water-fast, anti-freezing property is better.
As another preferred, described diatomaceous fineness is more than or equal to 200 orders, the diatomite porous internal structure of drying, many 5000 to 6000 times of its ultra tiny boring ratio charcoal, the water of 4 times of deadweights be can absorb, so that play water retention, potassium, sodium, chlorion in extra large sand adsorbed.
As another preferred, described flyash is the first level flour coal ash, and fineness of pulverized-coal ash is thinner, can improve mortar thixotropy and mobility.
As another preferred, described starch ethers is the starch ethers of model ST2000, has following character, pH value is alkalescence (5% the aqueous solution), is dissolvable in water cold water, and fineness is less than 500 microns, viscosity is 400-1200 milli pascal second (5% the aqueous solution), and water-retentivity and sag resistance are stronger.
As another preferred, described ether of cellulose is the hydroxypropyl methyl cellulose ether of viscosity 40,000-100,000, further increases water-retentivity, suppresses layering and segregation phenomenon.
As another preferred, described thixotroping lubricant is OC level thixotroping lubricant, increases oilness and pumping.
As another preferred, described guar gum ether is hydroxypropylguar gum ether, improves the smoothness of product.
As another preferred, described water reducer is the how sulfonic formaldehyde condensation compound of water-reducing rate 15%-20%, improves the mobility of product.
The preparation method of a kind of like this mortar water-retaining admixture that the present invention adopts, it comprises the steps:
1), diatomite is dried pre-treatment, described bake out temperature is greater than 300 degrees centigrade;
2) fineness degree after, diatomite is ground pre-treatment, described diatomite grinds is at least 200 orders;
3), each raw material is pressed following quality than weighing, diatomite 55%-75%, flyash 8%-21%, starch ethers 0.4%-3%, ether of cellulose 3%-8%, thixotroping lubricant 0.4-3%, guar gum ether 1.5%-5%, water reducer 1%-5%;
4), each raw material put into the plough coulter type blender mix, form finished product;
5), with finished product packing.
The present invention compares with water-retaining admixture of the prior art, have the following advantages: the water-retaining admixture of prior art is generally inorganic mineral, air entrapment agent class, water-retaining admixture workability of the present invention is better, can satisfy each operation constructing operation in use procedure, improved operating efficiency, even in the coastland, after people use desalination, extra large sand adds mortar, can not produce with the mortar surface after water-retaining admixture of the present invention yet and analyse the salt phenomenon, improve the weather resistance of buildings, and had good plasticity, splitting resistance and the barrier properties of subtracting.
The present invention compares with water-retaining admixture preparation method of the prior art, has the following advantages: fully make diatomaceous crystal water organic substance decomposing, make it reach best suction state, the preparation method is simple, and cost is lower, and operator's labour intensity is lower.
Embodiment:
The invention will be further described below in conjunction with specific embodiment.
a kind of mortar water-retaining admixture of the present invention, mix after its raw material mixing by following mass ratio and form: diatomite 55%-75%, flyash 8%-21%, starch ethers 0.4%-3%, ether of cellulose 3%-8%, thixotroping lubricant 0.4-3%, guar gum ether 1.5%-5%, water reducer 1%-5%, more particularly, the mass ratio of described each raw material is diatomite 62%-74%, flyash 10%-19%, starch ethers 0.5%-2%, ether of cellulose 4%-7%, thixotroping lubricant 0.5-2%, guar gum ether 2%-4%, water reducer 1.5%-4%, for being described in detail as follows of each raw material in the present invention: described diatomaceous fineness degree is for more than or equal to 200 orders, described flyash is the first level flour coal ash, described starch ethers is the starch ethers with following character, pH value is alkalescence (5% the aqueous solution), be dissolvable in water cold water, fineness is less than 500 microns, viscosity is 400-1200 milli pascal second (5% the aqueous solution).Described ether of cellulose is the hydroxypropyl methyl cellulose ether of viscosity 40,000-100,000.Described thixotroping lubricant is OC level thixotroping lubricant.Described guar gum ether is hydroxypropylguar gum ether.Described water reducer is the how sulfonic formaldehyde condensation compound of water-reducing rate 15%-20%, and the preparation method of described a kind of mortar water-retaining admixture is as follows: it comprises the following steps: 1), diatomite is dried pre-treatment, described bake out temperature is greater than 300 degrees centigrade; 2) fineness degree after, diatomite is ground pre-treatment, described diatomite grinds is at least 200 orders; 3), each raw material is pressed following quality than weighing, diatomite 55%-75%, flyash 8%-21%, starch ethers 0.4%-3%, ether of cellulose 3%-8%, thixotroping lubricant 0.4-3%, guar gum ether 1.5%-5%, water reducer 1%-5%; 4), each raw material put into the plough coulter type blender mix, form finished product; 5), with finished product packing.
Embodiment one
Diatomite is dried pre-treatment, 310 degrees centigrade of described bake out temperatures; 2) fineness degree after, diatomite is ground pre-treatment, described diatomite grinds is 200 orders; 3), each raw material is pressed following quality than weighing, diatomite 65%, flyash 19%, starch ethers 0.5%, ether of cellulose 7%, thixotroping lubricant 0.5%, guar gum ether 4%, water reducer 4%; 4), each raw material put into the plough coulter type blender mix, form finished product; 5), with finished product packing.
Embodiment two
Diatomite is dried pre-treatment, 305 degrees centigrade of described bake out temperatures; 2) fineness degree after, diatomite is ground pre-treatment, described diatomite grinds is 205 orders; 3), each raw material is pressed following quality than weighing, diatomite 69%, flyash 17%, starch ethers 0.5%, ether of cellulose 5%, thixotroping lubricant 0.5%, guar gum ether 4%, water reducer 4%; 4), each raw material put into the plough coulter type blender mix, form finished product; 5), with finished product packing.
Embodiment three
Diatomite is dried pre-treatment, 310 degrees centigrade of described bake out temperatures; 2) fineness degree after, diatomite is ground pre-treatment, described diatomite grinds is 210 orders; 3), each raw material is pressed following quality than weighing, diatomite 74%, flyash 9%, starch ethers 2%, ether of cellulose 5%, thixotroping lubricant 2%, guar gum ether 4%, water reducer 4%; 4), each raw material put into the plough coulter type blender mix, form finished product; 5), with finished product packing.
In practice mortar water-retaining admixture of the present invention, usage is as follows: the building mortar of Site, mortar water-retaining admixture of the present invention can be added before adding the water stirring, add water and stir and got final product in 3～5 minutes together with other material such as cement sand, the consumption of mortar water-retaining admixture in building mortar is 1～2%.During the common dry-mixed mortar of premixing dry-mixed mortar plant produced, mortar water-retaining admixture of the present invention is transported in premixing dry-mixed mortar factories storehouse, by different mortar kind mortar mix ratio preset proportion, entering mixed equipment through electronic measurement stirs, churning time is more than 2 minutes, to guarantee quality product.The volume of mortar water-retaining admixture in common dry-mixed mortar is 0.5～1.5%.
To the performance test results of mortar water-retaining admixture of the present invention, as follows: detection method and standard are (" building mortar basic performance tests method " JGJ/70-2009, " masonry mortar plasticizer " JG/T164-2004 and " premixing mortar " GB/T25181-2010)
Claims (10)
1. a mortar water-retaining admixture, is characterized in that, mixes after its raw material mixing by following mass ratio to form: diatomite 55%-75%, flyash 8%-21%, starch ethers 0.4%-3%, ether of cellulose 3%-8%, thixotroping lubricant 0.4-3%, guar gum ether 1.5%-5%, water reducer 1%-5%.
2. a kind of mortar water-retaining admixture according to claim 1, is characterized in that, the mass ratio of described each raw material is diatomite 62%-74%, flyash 10%-19%, starch ethers 0.5%-2%, ether of cellulose 4%-7%, thixotroping lubricant 0.5-2%, guar gum ether 2%-4%, water reducer 1.5%-4%.
3. a kind of mortar water-retaining admixture according to claim 1, is characterized in that, described diatomaceous fineness is more than or equal to 200 orders.
4. a kind of mortar water-retaining admixture according to claim 1, is characterized in that, described flyash is the first level flour coal ash.
5. a kind of mortar water-retaining admixture according to claim 1, it is characterized in that, described starch ethers is the starch ethers of model ST2000, has following character, pH value is alkalescence (5% the aqueous solution), be dissolvable in water cold water, fineness is less than 500 microns, and viscosity is 400-1200 milli pascal second (5% the aqueous solution).
6. a kind of mortar water-retaining admixture according to claim 1, is characterized in that, described ether of cellulose is the hydroxypropyl methyl cellulose ether of viscosity 40,000-100,000.
7. a kind of mortar water-retaining admixture according to claim 1, is characterized in that, described thixotroping lubricant is OC level thixotroping lubricant.
8. a kind of mortar water-retaining admixture according to claim 1, is characterized in that, described guar gum ether is hydroxypropylguar gum ether.
9. a kind of mortar water-retaining admixture according to claim 1, is characterized in that, described water reducer is the how sulfonic formaldehyde condensation compound of water-reducing rate 15%-20%.
10. a mortar water-retaining admixture, is characterized in that, it comprises the following steps:
1), diatomite is dried pre-treatment, described bake out temperature is greater than 300 degrees centigrade;
2) fineness degree after, diatomite is ground pre-treatment, described diatomite grinds is at least 200 orders;
3), each raw material is pressed following quality than weighing, diatomite 55%-75%, flyash 8%-21%, starch ethers 0.4%-3%, ether of cellulose 3%-8%, thixotroping lubricant 0.4-3%, guar gum ether 1.5%-5%, water reducer 1%-5%;
4), each raw material put into the plough coulter type blender mix, form finished product;
5), with finished product packing.
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| CN2013100366530A CN103113038A (en) | 2013-01-31 | 2013-01-31 | Mortar water-retaining and thickening agent and preparation method thereof |
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| CN2013100366530A CN103113038A (en) | 2013-01-31 | 2013-01-31 | Mortar water-retaining and thickening agent and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103693888A (en) * | 2013-12-10 | 2014-04-02 | 同济大学 | Water retaining thickener taking bentonite as main raw material and preparation method |
| EP2966049A1 (en) * | 2014-07-10 | 2016-01-13 | Shin-Etsu Chemical Co., Ltd. | Thickener for hydraulic composition, one-component water-reducing agent, and preparation of hydraulic composition |
| CN106082771A (en) * | 2016-06-24 | 2016-11-09 | 桂林华越环保科技有限公司 | Concrete water-retaining agent |
| CN108947316A (en) * | 2018-08-29 | 2018-12-07 | 桐乡正昶新型材料有限公司 | A kind of mortar plasticising water-retaining agent and its production technology |
| CN109180061A (en) * | 2018-09-20 | 2019-01-11 | 翟琳 | A kind of premixing mortar water-retaining admixture |
| CN109942224A (en) * | 2019-03-23 | 2019-06-28 | 杭州构建新型材料有限公司 | Concrete thickener and its preparation process, application suitable for dry-method sand manufacturing configuration |
| CN110342866A (en) * | 2019-07-30 | 2019-10-18 | 上海市建筑科学研究院 | A kind of nuclear power station radioactivity steams raffinate solidified cement body and preparation method thereof |
| CN110698106A (en) * | 2019-08-28 | 2020-01-17 | 桐乡正昶新型材料有限公司 | Premixed mortar humidifying plasticizer and production process thereof |
| CN111592271A (en) * | 2020-05-30 | 2020-08-28 | 科洛结构自防水技术(深圳)有限公司 | Concrete internal-doped anti-seepage anti-cracking shrinkage-reducing agent and preparation method thereof |
| US11352301B2 (en) | 2016-10-14 | 2022-06-07 | Gcp Applied Technologies Inc. | Controllable high flow concrete |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103693888B (en) * | 2013-12-10 | 2016-01-20 | 同济大学 | A kind of take wilkinite as water-retaining admixture and the preparation method of main raw material |
| CN103693888A (en) * | 2013-12-10 | 2014-04-02 | 同济大学 | Water retaining thickener taking bentonite as main raw material and preparation method |
| EP2966049A1 (en) * | 2014-07-10 | 2016-01-13 | Shin-Etsu Chemical Co., Ltd. | Thickener for hydraulic composition, one-component water-reducing agent, and preparation of hydraulic composition |
| US20160009599A1 (en) * | 2014-07-10 | 2016-01-14 | Shin-Etsu Chemical Co., Ltd. | Thickener for hydraulic composition, one-component water-reducing agent, and preparation of hydraulic composition |
| KR20160007383A (en) * | 2014-07-10 | 2016-01-20 | 신에쓰 가가꾸 고교 가부시끼가이샤 | Thickener for hydraulic composition, one-component water-reducing agent, and preparation of hydraulic composition |
| US9593047B2 (en) | 2014-07-10 | 2017-03-14 | Shin-Etsu Chemical Co., Ltd. | One-component water-reducing agent, and preparation of hydraulic composition |
| KR102417918B1 (en) | 2014-07-10 | 2022-07-07 | 신에쓰 가가꾸 고교 가부시끼가이샤 | Thickener for one-component water-reducing agent, one-component water-reducing agent, and preparation of hydraulic composition |
| CN106082771A (en) * | 2016-06-24 | 2016-11-09 | 桂林华越环保科技有限公司 | Concrete water-retaining agent |
| US11352301B2 (en) | 2016-10-14 | 2022-06-07 | Gcp Applied Technologies Inc. | Controllable high flow concrete |
| CN108947316A (en) * | 2018-08-29 | 2018-12-07 | 桐乡正昶新型材料有限公司 | A kind of mortar plasticising water-retaining agent and its production technology |
| CN109180061A (en) * | 2018-09-20 | 2019-01-11 | 翟琳 | A kind of premixing mortar water-retaining admixture |
| CN109942224A (en) * | 2019-03-23 | 2019-06-28 | 杭州构建新型材料有限公司 | Concrete thickener and its preparation process, application suitable for dry-method sand manufacturing configuration |
| CN110342866B (en) * | 2019-07-30 | 2021-11-05 | 上海市建筑科学研究院 | Nuclear power station radioactive raffinate cement solidified body and preparation method thereof |
| CN110342866A (en) * | 2019-07-30 | 2019-10-18 | 上海市建筑科学研究院 | A kind of nuclear power station radioactivity steams raffinate solidified cement body and preparation method thereof |
| CN110698106A (en) * | 2019-08-28 | 2020-01-17 | 桐乡正昶新型材料有限公司 | Premixed mortar humidifying plasticizer and production process thereof |
| CN111592271A (en) * | 2020-05-30 | 2020-08-28 | 科洛结构自防水技术(深圳)有限公司 | Concrete internal-doped anti-seepage anti-cracking shrinkage-reducing agent and preparation method thereof |
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Application publication date: 20130522 |