CN108975745A - The concrete and mortar additive of adjustable setting time and cracking resistance - Google Patents
The concrete and mortar additive of adjustable setting time and cracking resistance Download PDFInfo
- Publication number
- CN108975745A CN108975745A CN201810781948.3A CN201810781948A CN108975745A CN 108975745 A CN108975745 A CN 108975745A CN 201810781948 A CN201810781948 A CN 201810781948A CN 108975745 A CN108975745 A CN 108975745A
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- concrete
- micro mist
- setting time
- cracking resistance
- water
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A kind of concrete and mortar additive of adjustable setting time and cracking resistance, it is characterized by: the weight percent of its feed components are as follows: 20~50% parts by weight of zeolite micro mist, perlite tailing powder 25%~40%, calcium hydroxide 10~20%, poly-vinegar hydrochlorate water-reducing agent 1~3%, water 15~25%；Washing slurry 10~15%；Calcium lignosulfonate 2~4%.The present invention will be the zeolite micro mist of porous material together with perlite tailing micro mist compounding, the fluent material with its equivalent can be absorbed in it, calcium hydroxide is saturated using this characteristic zeolite micro mist of the invention and the absorption of perlite tailing micro mist, poly- acetate hydrochloride, water, washing slurry, the mixed solution of calcium lignosulfonate, this a small amount of additive is mixed when a large amount of active mixed material concrete are mixed in preparation, since ingredient of its absorption can achieve long-term sustained release efficiency, calcium lignosulfonate also functions to the effect of sustained release simultaneously, therefore concrete coagulating time not only can effectively be adjusted, improve early strength, and concrete impermeability can be improved, anti-freezing property and anti-crack ability.
Description
Technical field
The present invention relates to portland cement additive technical field, being specifically related to a kind of adjustable setting time (adds
The fast presetting period (2 hours) improves early strength) and cracking resistance concrete and mortar additive.
Background technique
Cement all (has six kinds of cement, only silicate cement mixed with a large amount of active additions at present in general-purpose cement standard
The active addition of mud is less than 5%, and ordinary portland cement is less than 20%, portland slag cement: slag dosage 20~
70%, Portland fly ash cement: flyash dosage 20~40%, portland-pozzolan cement: volcanic ash 20~40%, compound
Portland cement: Portland fly ash cement is largely used in the current civil engineering of active addition 20~50%, is answered
Close portland cement, portland slag cement；When producing cement, to improve cement performance, strength of cement grade is adjusted, and is added
Enter the artificial or natural mineral material into cement, referred to as cement additive.Mixing material is divided into two kinds again: nonactive mixed
Condensation material: not having activity or active very low mixing material is known as nonactive mixing material.Effect: adjusting strength reduces water
Change heat, increases cement output, reduces cost；Active addition: itself it will not harden or harden extremely slowly, only in exciting agent
The lower hydraulic cementing materials that could condense hardening of effect, referred to as active addition.Effect: adjustment strength of cement grade increases
Add cement output, improve certain performances, reduce the heat of hydration and cost etc.), some is even as high as 60% or more；A large amount of activity mixing
The doping of material will lead to that jelling time is too long and early strength is too low, anti-permeability performance, anti-freezing property and anti-crack ability
It is poor.In order to solve the concrete and mortar additive that this phenomenon has invented a kind of adjustable setting time and cracking resistance.
Summary of the invention
The present invention in view of the above shortcomings of the prior art, provide a kind of adjustable setting time and cracking resistance concrete and
Mortar additive is adjustable concrete coagulating time, improves its early strength and can improve concrete impermeability, freeze proof
Performance and anti-crack ability.
In order to solve the above-mentioned technical problem, a kind of the technical solution adopted by the present invention are as follows: adjustable setting time and anti-
The concrete and mortar additive split, the weight percent of feed components are as follows: zeolite micro mist 20~50%, perlite tailing
Powder 25%~40%, calcium hydroxide 10~20%, poly-vinegar hydrochlorate water-reducing agent (polycarboxylic acids (salt) water-reducing agent) 1~3%, water 15~
25%；Washing slurry 10~15%；Calcium lignosulfonate 2~4%.
Preferably, the concrete and mortar additive of the adjustable setting time and cracking resistance, raw material each group
The weight percent divided are as follows: zeolite micro mist 25~45%, perlite tailing powder 30%~35%, calcium hydroxide 12~17% gather
Acetate hydrochloride 1.5~2%, water 17~22%, washing slurry 11~13%, calcium lignosulfonate 2.5~3.5%.
It is former as the concrete and mortar additive of further preferred, described adjustable setting time and cracking resistance
Expect the weight percent of each component are as follows: zeolite micro mist 25%, perlite tailing powder 30%, calcium hydroxide 12%；Poly- acetate hydrochloride
1.5%, water 17%, washing slurry 12%, calcium lignosulfonate 2.5%.
Preferably, the zeolite micro mist be by it is levigate, to cross 80 μm of square hole screens, tail over must not exceed 8% boiling
Stone micro mist；To meet the technical standard of cement；It is sieved using 80 μm of square hole screen to by levigate zeolite, on sieve
For the residual quantity of material no more than the 8% of total sieving material, screenings is zeolite micro mist.
Preferably, the perlite tailing powder be by perlite tailing by it is levigate, to cross 80 μm of square hole screens, tail over
It must not exceed 8% perlite tailing powder.The fineness can be greater than the standard value of cement；I.e. using 80 μm of square hole screen to process
Levigate perlite tailing is sieved, 8% of residual quantity no more than total sieving weight of material of on-the-sieve material, and screenings is
Perlite tailing powder.
Preferably, the zeolite material is the zeolite that dioxide-containing silica is greater than 70%, which can be improved aquation
Activity reaches best hydration activity.
Preferably, calcium hydroxide, poly-vinegar hydrochlorate water-reducing agent, water, washing slurry, calcium lignosulfonate are uniformly mixed first
It is spare to form mixing liquid.The operating procedure be because are as follows:, can not only containing water-reducing agent but also having alkali-activator in all materials
With playing a role jointly in a sustained manner.
Preferably, the zeolite micro mist and perlite tailing micro mist is immersed in mixing liquid after 15 days, because 15
The amount of solution absorbed after it is kept constant, it is believed that has reached saturation state, then sealing storage.The operating procedure is
Cause are as follows: zeolite micro mist and perlite tailing micro mist absorbent solution can be made to reach saturation shape after being first soaked in mixing liquid 15 days
State provides guarantee for the slow release effect of later use process, this external seal stores the volatilization that can also prevent moisture in solution.
Calcium lignosulfonate of the present invention, plays the role of sustained release, and hydrated reaction of cement can be made gently and long-term,
It can make hydrated product refinement and uniformly, facilitate material densification and strengthen, improve concrete strength, impermeability, anti-freezing property.
The sum of feed components weight percent of the present invention is 100%.
The advantages of the present invention:
The present invention by be porous material zeolite micro mist and perlite tailing micro mist compounding together with, can be absorbed with
The fluent material of its equivalent is saturated hydroxide using this characteristic zeolite micro mist of the invention and the absorption of perlite tailing micro mist
Calcium, poly- acetate hydrochloride, water, washing slurry, calcium lignosulfonate mixed solution, when a large amount of active mixed material concrete are mixed in preparation
Mix this small amount of additive, due to ingredient of its absorption can achieve long-term sustained release efficiency simultaneously calcium lignosulfonate also function to it is slow
The effect released, therefore not only can effectively adjust concrete coagulating time, improve early strength, and concrete permeability resistance can be improved
Energy, anti-freezing property and anti-crack ability.
Specific embodiment
The present invention is described in further detail below by embodiment, but the present invention is not limited solely to following embodiment.
Embodiment 1
The concrete and mortar additive of adjustable setting time and cracking resistance, the weight percent of feed components
Are as follows: 32% parts by weight of zeolite micro mist, perlite tailing powder 30%, calcium hydroxide 10%；Poly- acetate hydrochloride 1%, water 15%, washing
Slurry (is the solid waste that iron and steel enterprise carries out that steel slag hot splashing processing generates, such as uses the water of Baosteel Usiminas Solid state fermentation
Pulp washing) 10%, calcium lignosulfonate 2%.
Calcium hydroxide, poly- acetate hydrochloride, water, washing slurry, calcium lignosulfonate are uniformly mixed first, in accordance with formula rate
It is spare to form mixing liquid.The zeolite micro mist and perlite tailing micro mist are immersed in above-mentioned mixing liquid (leaching in 15 days
Bubble process also seals), then sealing storage.
Technical performance is specifically shown in Table 1:
Table 1
| Kind | Setting time initial set/final set | 3 days compression strength MPa | Seepage-resistant grade | Freeze proof grade |
| Normal concrete | 6.5 hours/10 hours | 11.5 | P3 | F30 |
| The present invention | 10 points/7 hours 2 hours | 17.8 | P6 | F70 |
Embodiment 2
The concrete and mortar additive of adjustable setting time and cracking resistance, the weight percent of feed components
Are as follows: zeolite micro mist 30%, perlite tailing powder 25%, calcium hydroxide 15%, poly- acetate hydrochloride 2%, water 15%, washing slurry
10%, calcium lignosulfonate 3%.
The preparation method is the same as that of Example 1.
Technical performance is specifically shown in Table 2:
Table 2
| Kind | Setting time initial set/final set | 3 days compression strength MPa | Seepage-resistant grade | Freeze proof grade |
| Normal concrete | 6.5 hours/10 hours | 11.5 | P3 | F30 |
| The present invention | 2 hours/45 hours | 21.0 | P8 | F100 |
Embodiment 3
The concrete and mortar additive of adjustable setting time and cracking resistance, the weight percent of feed components
Are as follows: 25% parts by weight of zeolite micro mist, perlite tailing powder 30%, calcium hydroxide 15%；Poly- acetate hydrochloride 2%, water 15%, washing
Slurry 10%, calcium lignosulfonate 3%.
The preparation method is the same as that of Example 1.
Technical performance is specifically shown in Table 3:
Table 3
| Kind | Setting time initial set/final set | 3 days compression strength MPa | Seepage-resistant grade | Freeze proof grade |
| Normal concrete | 6.5 hours/10 hours | 11.5 | P3 | F30 |
| The present invention | 6.5 hours/10 hours | 23.5 | P7 | F90 |
Through the foregoing embodiment it is found that being compared to common concrete, additive feature of the invention is exactly with energy
Concrete coagulating time is adjusted, early strength is improved, particularly concrete impermeability, anti-freezing property and cracking resistance energy can be improved
Power.
Claims (8)
1. the concrete and mortar additive of a kind of adjustable setting time and cracking resistance, it is characterised in that: its feed components
Weight percent are as follows: zeolite micro mist 20~50%, perlite tailing powder 25%~40%, calcium hydroxide 10~20%, poly-vinegar
Hydrochlorate water-reducing agent 1~3%, water 15~25%；Washing slurry 10~15%；Calcium lignosulfonate 2~4%.
2. the concrete and mortar additive of adjustable setting time according to claim 1 and cracking resistance, feature exist
In: the weight percent of feed components are as follows: zeolite micro mist 25~45%, perlite tailing powder 30%~35%, calcium hydroxide
12~17%, poly- acetate hydrochloride 1.5~2%, water 17~22%, washing slurry 11~13%, calcium lignosulfonate 2.5~3.5%.
3. the concrete and mortar additive of adjustable setting time according to claim 2 and cracking resistance, feature exist
In: the weight percent of feed components are as follows: zeolite micro mist 25%, perlite tailing powder 30%, calcium hydroxide 12%；Poly-vinegar acid
Hydrochloric acid 1.5%, water 17%, washing slurry 12%, calcium lignosulfonate 2.5%.
4. the concrete and mortar additive of adjustable setting time according to claim 1 and cracking resistance, feature exist
In: the zeolite micro mist is levigate to be tailed over to 80 μm of square hole screens and must not exceed 8%.
5. the concrete and mortar additive of adjustable setting time according to claim 1 and cracking resistance, feature exist
In: the perlite tailing is levigate to be tailed over to 80 μm of square hole screens and must not exceed 8%.
6. the concrete and mortar additive of adjustable setting time according to claim 1 and cracking resistance, feature exist
In: the zeolite material is the zeolite that dioxide-containing silica is greater than 70%.
7. the concrete and mortar additive of adjustable setting time according to claim 1 and cracking resistance, feature exist
In: the calcium hydroxide of formula rate, poly-vinegar hydrochlorate water-reducing agent, water, washing slurry, calcium lignosulfonate are uniformly mixed and form mixing
Liquid is spare.
8. the concrete and mortar additive of adjustable setting time according to claim 7 and cracking resistance, feature exist
In: the zeolite micro mist and perlite tailing micro mist is immersed in mixing liquid after 15 days, sealing storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810781948.3A CN108975745B (en) | 2018-07-17 | 2018-07-17 | Concrete and mortar admixture capable of adjusting setting time and cracking resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810781948.3A CN108975745B (en) | 2018-07-17 | 2018-07-17 | Concrete and mortar admixture capable of adjusting setting time and cracking resistance |
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| Publication Number | Publication Date |
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| CN108975745A true CN108975745A (en) | 2018-12-11 |
| CN108975745B CN108975745B (en) | 2021-10-15 |
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| CN201810781948.3A Active CN108975745B (en) | 2018-07-17 | 2018-07-17 | Concrete and mortar admixture capable of adjusting setting time and cracking resistance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109896770A (en) * | 2019-04-19 | 2019-06-18 | 武汉源锦建材科技有限公司 | A kind of concrete intensifier |
| CN111606630A (en) * | 2020-06-15 | 2020-09-01 | 陕西金磊混凝土有限公司 | Steam-curing-free high-fluidity concrete and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415571A (en) * | 2002-10-16 | 2003-05-07 | 同济大学 | Admixture of building mortar of lime paste substitution type |
| RU2320602C2 (en) * | 2006-04-27 | 2008-03-27 | Михаил Ефимович Цельнер | Additive for concretes and mortars and method of production of such additive |
| CN102092984A (en) * | 2010-12-13 | 2011-06-15 | 安吉中瑞膨润土化工有限公司 | Energy-saving environmental-protection thickener for mortar preblending and dry-mixing |
| KR20160081182A (en) * | 2014-12-31 | 2016-07-08 | 주식회사 케미콘 | Additive for Water Repellent Plaster Mortar or Remitar |
| CN106316198A (en) * | 2015-07-03 | 2017-01-11 | 刘夕平 | Multifunctional mortar additive |
-
2018
- 2018-07-17 CN CN201810781948.3A patent/CN108975745B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415571A (en) * | 2002-10-16 | 2003-05-07 | 同济大学 | Admixture of building mortar of lime paste substitution type |
| RU2320602C2 (en) * | 2006-04-27 | 2008-03-27 | Михаил Ефимович Цельнер | Additive for concretes and mortars and method of production of such additive |
| CN102092984A (en) * | 2010-12-13 | 2011-06-15 | 安吉中瑞膨润土化工有限公司 | Energy-saving environmental-protection thickener for mortar preblending and dry-mixing |
| KR20160081182A (en) * | 2014-12-31 | 2016-07-08 | 주식회사 케미콘 | Additive for Water Repellent Plaster Mortar or Remitar |
| CN106316198A (en) * | 2015-07-03 | 2017-01-11 | 刘夕平 | Multifunctional mortar additive |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109896770A (en) * | 2019-04-19 | 2019-06-18 | 武汉源锦建材科技有限公司 | A kind of concrete intensifier |
| CN109896770B (en) * | 2019-04-19 | 2021-08-20 | 武汉源锦建材科技有限公司 | Concrete reinforcing agent |
| CN111606630A (en) * | 2020-06-15 | 2020-09-01 | 陕西金磊混凝土有限公司 | Steam-curing-free high-fluidity concrete and preparation method thereof |
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| CN108975745B (en) | 2021-10-15 |
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