CN105110692A - Summer high-temperature plastering mortar additive taking natural sand as aggregate - Google Patents
Summer high-temperature plastering mortar additive taking natural sand as aggregate Download PDFInfo
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- CN105110692A CN105110692A CN201510458034.XA CN201510458034A CN105110692A CN 105110692 A CN105110692 A CN 105110692A CN 201510458034 A CN201510458034 A CN 201510458034A CN 105110692 A CN105110692 A CN 105110692A
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Abstract
The invention relates to the field of building materials and discloses a summer high-temperature plastering mortar additive taking natural sand as aggregate. The additive is prepared from the following components in percentage by mass: 20-30% of ethoxyl methyl cellulose ether, 10-20% of guar gum, 10-20% of xanthan gum, 15-30% of sodium tripolyphosphate, 1-5% of magnesium lithium silicate, 20-40% of activated clay and 5-10% of an air entraining agent. The invention solves the problem that in summer, as the environmental temperature is high and natural sand dried for producing plastering mortar is immediately used for producing mortar, the temperature of the mortar is about 70 DEG C, but the performance of a conventional additive at present cannot satisfy the construction and quality requirements in the construction site under the condition that the plastering mortar is at a high temperature. By adding the additive disclosed by the invention, the setting time of the mortar is delayed; the water loss is slow; the consistence loss is little; the water-retention rate is high; the binding strength is high; the strength of the mortar is high; cracking of the mortar is effectively inhibited; and the construction efficiency is improved.
Description
Technical field
The invention belongs to building material technical field, relate to the summer high temperature additive for motar that a kind of natural sand is aggregate.
Background technology
Premixing mortar refers to by specialized manufacturer production, for the various mortar mixtures in construction project, is a kind of New Building Materials that China's developed recently gets up, can be divided into common premixing mortar and extraordinary mortar by performance.20th century early fifties, European countries just start a large amount of produce and use premixing mortar, the developing history of existing more than 50 year so far.At home, the development of the developed regions such as Shanghai and Changzhou is very fast.Meanwhile, premixing mortar, also progressively forbidding Site mortar, is promoted the use of in present many cities.Its advantage is health environment-friendly, steady quality, energy-conservation comfortable etc.Along with premixing mortar is at the spread of China, wherein also expose Problems existing, such as using natural sand as the mortar of aggregate, need oven dry link, when using summer, because envrionment temperature is high, natural sand produces mortar after drying, and mortar cannot be lowered the temperature at short notice, when causing high temperature mortar to use to building-site, slurry consistency loss is large, time of coagulation is short, and workman cannot normal construction, affects the quality in construction speed and later stage
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is, solves application property and the mortar performance problem of summer high temperature motar, take natural sand as the summer high temperature motar specialist additive of aggregate by providing a kind of.
(2) technical scheme
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions, described admixture is become to be grouped into by ethoxyl methyl cellulose ether, guar gum, xanthan gum, tripoly phosphate sodium STPP, lithium magnesium silicate, atlapulgite, air entrapment agent etc., and wherein each constituent mass percentage composition is as follows:
Ethoxyl methyl cellulose ether 20-30%;
Guar gum 10-20%;
Xanthan gum 10-20%;
Tripoly phosphate sodium STPP 15-30%;
Lithium magnesium silicate 1-5%;
Atlapulgite 20-40%;
Air entrapment agent 5-10%.
Described ethoxyl methyl cellulose ether is 75 DEG C of-90 DEG C of gelling temps, and viscosity is 100,000-20 ten thousand viscosity.
Described atlapulgite fineness is 400 orders.
Described air entrapment agent is powder triterpenoid saponin air entrapment agent.
(3) beneficial effect
The beneficial effect that the present invention has is, by selection starting material optimization of C/C composites, ensure that each constituent materials gives full play to its effect in admixture under the high temperature conditions: 1, ethoxyl methyl cellulose ether at high temperature provides good water-retentivity, for hydrated cementitious provides sufficient moisture, ensure mortar strength.2, guar gum and xanthan gum provide the application property of mortar and resist glidepath.3, tripoly phosphate sodium STPP and lithium magnesium silicate can delay cement hydration rate under the high temperature conditions, ensure that mortar has the desirable operating time.4, triterpenoid saponin air entrapment agent provides the application property of mortar.
A kind of natural sand of the present invention is the summer high temperature additive for motar environmental protection, nontoxic, pollution-free of aggregate, and addition content is low, and cost performance is high.The high temperature mortar of admixture admixture has delayed the hydration reaction of cement, reduces mortar water loss at high temperature, and slurry consistency loss is little, water retention is high, intensity is high, save cement, suppress mortar hollowing and cracking, raising operating efficiency.
Embodiment
Below by embodiment, the invention will be further described.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Natural sand is a summer high temperature additive for motar for aggregate, prepares burden according to following weight percent: ethoxyl methyl cellulose ether 25%, guar gum 15%, xanthan gum 10%, tripoly phosphate sodium STPP 15%, lithium magnesium silicate 5%, atlapulgite 25%, three-iron saponin(e 5%.Add in agravic blender in certain sequence after weighing according to proportioning and stir, be uniformly mixed 20 minutes, blowing packaging is admixture finished product.
Add the mortar ingredient per-cent of above-mentioned mortar additive and main physical and chemical index as following table:
Test design, same mortar mix ratio, different mortar temperatures, 1# mortar temperature is 65 DEG C, and 2# temperature is 70 DEG C, and 3# mortar temperature is 75 DEG C, and 4# mortar temperature is 80 DEG C, and 5# is 65 DEG C of blank tests.By test, along with the raising of temperature, the halfhour denseness loss of mortar has increased slightly, 5# tests, and the mortar halfhour denseness loss not adding admixture is very large, and such workman needs again blunge to use, water cement ratio increases, and affects the performance of mortar, reduces speed of application simultaneously.By test, add the mortar of this additive, effectively decrease slurry consistency loss, ensure that workman has enough operating times, do not need secondary blunge, water retention is high, for hydrated cementitious provides adequate water, ensure that the later strength of mortar, improve mortar quality.This admixture, after market, Chengdu, market, Zhanjiang and market, Hubei use, solves mortar problems faced under summer high temperature, obtains client's accreditation.
Claims (4)
1. a natural sand is the summer high temperature additive for motar of aggregate, it is characterized in that: described admixture is become to be grouped into by ethoxyl methyl cellulose ether, guar gum, xanthan gum, tripoly phosphate sodium STPP, lithium magnesium silicate, atlapulgite, air entrapment agent etc., and wherein each constituent mass percentage composition is as follows:
Ethoxyl methyl cellulose ether 20-30%
Guar gum 10-20%
Xanthan gum 10-20%
Tripoly phosphate sodium STPP 15-30%
Lithium magnesium silicate 1-5%
Atlapulgite 20-40%
Air entrapment agent 5-10%.
2. natural sand according to claim 1 is the summer high temperature additive for motar of aggregate, it is characterized in that: the gelling temp of described ethoxyl methyl cellulose ether is 75 DEG C-90 DEG C, and viscosity is 100,000-20 ten thousand viscosity.
3. natural sand according to claim 1 is the summer high temperature additive for motar of aggregate, it is characterized in that: described atlapulgite fineness is 400 orders.
4. natural sand according to claim 1 is the summer high temperature additive for motar of aggregate, it is characterized in that: described air entrapment agent is powder triterpenoid saponin air entrapment agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510458034.XA CN105110692A (en) | 2015-07-30 | 2015-07-30 | Summer high-temperature plastering mortar additive taking natural sand as aggregate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510458034.XA CN105110692A (en) | 2015-07-30 | 2015-07-30 | Summer high-temperature plastering mortar additive taking natural sand as aggregate |
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| CN105110692A true CN105110692A (en) | 2015-12-02 |
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| CN201510458034.XA Pending CN105110692A (en) | 2015-07-30 | 2015-07-30 | Summer high-temperature plastering mortar additive taking natural sand as aggregate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746891A (en) * | 2016-12-23 | 2017-05-31 | 广东龙湖科技股份有限公司 | A kind of wet mixing mortar additive and preparation method thereof |
| CN110002785A (en) * | 2019-04-10 | 2019-07-12 | 北京博润佳科技有限公司 | It is a kind of to use natural sand for the summer high temperature mortar additive of aggregate |
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Patent Citations (10)
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| CN101466811A (en) * | 2006-06-13 | 2009-06-24 | 塞拉尼斯国际公司 | Fluid loss additive with improved rheological properties |
| CN101500958A (en) * | 2006-08-01 | 2009-08-05 | 电气化学工业株式会社 | Cement admixture and cement composition making use of the same |
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| WO2014089815A1 (en) * | 2012-12-14 | 2014-06-19 | Dow Global Technologies Llc | Composition of cellulose ether and gluconate salts for use in cement containing skim coats |
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| CN103864338A (en) * | 2014-03-05 | 2014-06-18 | 济南大学 | Oxydative degradation starch grafted polycarboxylate superplasticizer and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746891A (en) * | 2016-12-23 | 2017-05-31 | 广东龙湖科技股份有限公司 | A kind of wet mixing mortar additive and preparation method thereof |
| CN110002785A (en) * | 2019-04-10 | 2019-07-12 | 北京博润佳科技有限公司 | It is a kind of to use natural sand for the summer high temperature mortar additive of aggregate |
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Application publication date: 20151202 |