CN107324682A - Crack resistence concrete additive and preparation method thereof - Google Patents
Crack resistence concrete additive and preparation method thereof Download PDFInfo
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- CN107324682A CN107324682A CN201710443785.3A CN201710443785A CN107324682A CN 107324682 A CN107324682 A CN 107324682A CN 201710443785 A CN201710443785 A CN 201710443785A CN 107324682 A CN107324682 A CN 107324682A
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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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- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1029—Macromolecular compounds
- C04B20/1048—Polysaccharides, e.g. cellulose, or derivatives thereof
Abstract
The invention discloses a kind of crack resistence concrete additive and preparation method thereof, the preparation method includes：1）Butyl titanate and ethylene glycol are mixed to form solution A；2）Rare earth acetate salt, nano diatomite, water-soluble vanadic salts, graphene, 3 (2,3 the third oxygen of epoxy) propyl trimethoxy silicanes, citric acid, second alcohol and water are mixed to form solution B；3）Solution B is added dropwise in solution A, while ammoniacal liquor stirring is added dropwise, then Chen Hua, drying, calcining are with obtained presoma；4）Cyclodextrin, water and presoma are subjected to haptoreaction crack resistence concrete additive is made.The crack resistence concrete additive has the performance of excellent freeze proof and crack resistence, while the preparation method has the advantages that process is simple and raw material is easy to get.
Description
Technical field
The present invention relates to concrete additive, in particular it relates to a kind of crack resistence concrete additive and preparation method thereof.
Background technology
Concrete, referred to as " concrete ", typically refers to make binder materials with cement, sand, masonry gather materials, with water by a certain percentage
Coordinate, agitated gained.Concrete has abundant raw material, cheap, the characteristics of simple production process, it is used scope ten
Divide extensive, not only used in various civil engineerings, be exactly shipbuilding industry, mechanical industry, the exploitation of ocean, geothermal engineering etc., mix
Solidifying soil is also important material.But concrete material is due to the characteristic of self structure, in use especially for those
Seepage often occurs in underground and aouatic structure engineering, and this has a strong impact on and constrained the application of concrete material.
Therefore, constantly it is suggested about improving and improving the various additives of concrete material impermeability, such as early stage
Some expand the inorganic water-proof agents such as calcium chloride, the iron chloride to improve concrete anticracking impermeability by generation, in addition with
Some organics, such as organosilicon, aliphatic acid；But these waterproofing agent one side waterproof abilities are limited, especially in cold day
In gas, concrete easily ftractures.
The content of the invention
It is an object of the invention to provide a kind of crack resistence concrete additive and preparation method thereof, the crack resistence concrete adds
Plus agent has the performance of excellent freeze proof and crack resistence, while the preparation method has the advantages that process is simple and raw material is easy to get.
To achieve these goals, the invention provides a kind of preparation method of crack resistence concrete additive, including：
1）Butyl titanate and ethylene glycol are mixed to form solution A；
2）By rare earth acetate salt, nano diatomite, water-soluble vanadic salts, graphene, 3- (oxygen of 2,3- epoxies third) propyl trimethoxy
Silane, citric acid, second alcohol and water are mixed to form solution B；
3）Solution B is added dropwise in solution A, while ammoniacal liquor stirring is added dropwise, then Chen Hua, drying, calcining are with obtained presoma；
4）Cyclodextrin, water and presoma are subjected to haptoreaction crack resistence concrete additive is made.
Present invention also offers a kind of crack resistence concrete additive, the crack resistence concrete additive passes through above-mentioned system
Preparation Method is prepared.
In the above-mentioned technical solutions, the present invention causes butyl titanate, rare earth acetate salt by sol-gel process first, received
Rice diatomite, water-soluble vanadic salts, graphene, 3- (2,3- the third oxygen of epoxy) propyl trimethoxy silicane carry out sol gel reaction,
Then presoma is obtained by way of Chen Hua, drying, calcining, coats presoma finally by cyclodextrin and then addition is made
Agent, the crack resistence has the performance of excellent freeze proof and crack resistence for concrete, while the preparation method has process simple
The advantage being easy to get with raw material.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Embodiment
The embodiment to the present invention is described in detail below.It should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The invention provides a kind of preparation method of crack resistence concrete additive, including：
1）Butyl titanate and ethylene glycol are mixed to form solution A；
2）By rare earth acetate salt, nano diatomite, water-soluble vanadic salts, graphene, 3- (oxygen of 2,3- epoxies third) propyl trimethoxy
Silane, citric acid, second alcohol and water are mixed to form solution B；
3）Solution B is added dropwise in solution A, while ammoniacal liquor stirring is added dropwise, then Chen Hua, drying, calcining are with obtained presoma；
4）Cyclodextrin, water and presoma are subjected to haptoreaction crack resistence concrete additive is made.
In the step 1 of the present invention）In, the actual conditions of mixing can be selected in wide scope, but in order that be made
Additive for concrete have more excellent freeze proof and cracking resistance performance, it is preferable that in step 1）In, relative to
1mmol butyl titanates, the consumption of ethylene glycol is 8-10mL.
In the step 1 of the present invention）In, the actual conditions of mixing can be selected in wide scope, but in order that be made
Additive for concrete have more excellent freeze proof and cracking resistance performance, it is preferable that in step 1）In, mix at least full
It is enough lower condition：Mixed using agitating mode, whipping temp is 15-35 DEG C, and mixing time is 40-60min.
In the step 2 of the present invention）In, the consumption of each material can be selected in wide scope, but in order that obtained
Additive has the performance of more excellent freeze proof and cracking resistance for concrete, it is preferable that in step 2）In, relative to 1mmol
Rare earth acetate salt, the consumption of nano diatomite is 0.05-0.15mmol, and the consumption of water-soluble vanadic salts is 0.02-0.06mmol, stone
The consumption of black alkene is 0.03-0.1mmol, and the consumption of 3- (2,3- the third oxygen of epoxy) propyl trimethoxy silicane is 0.1-0.4mmol,
The consumption of citric acid is 0.2-0.4mmol, and the consumption of ethanol is 4-10mL, and the consumption of water is 10-20mL.
In the step 2 of the present invention）In, the actual conditions of mixing can be selected in wide scope, but in order that be made
Additive for concrete have more excellent freeze proof and cracking resistance performance, it is preferable that in step 2）In, mix at least full
It is enough lower condition：Mixed using agitating mode, whipping temp is 15-35 DEG C, and mixing time is 40-60min.
In the step 2 of the present invention）In, the specific species and size of raw material can be selected in wide scope, but be
Make obtained additive that there is the performance of more excellent freeze proof and cracking resistance for concrete, it is preferable that in step 2）In, vinegar
Acid rare earth salt is selected from least one of cerous acetate, gadolinium acetate, acetic acid dysprosium and acetic acid ytterbium, and the average grain diameter of nano diatomite is 5-
10nm, water-soluble vanadic salts is in potassium metavanadate, sodium metavanadate, sodium vanadate, vanadyl oxalate, vanadic sulfate and dichloro vanadyl
At least one.
In the step 3 of the present invention）In, the consumption of each material can be selected in wide scope, but in order that obtained
Additive has the performance of more excellent freeze proof and cracking resistance for concrete, it is preferable that in step 3）In, solution A and solution B
Volume ratio be 1：1.5-3；Also, ammoniacal liquor, which is added dropwise, causes the pH of reaction system to be 6.5-7.
In the step 3 of the present invention）In, Chen Hua actual conditions can be selected in wide scope, but in order that be made
Additive for concrete have more excellent freeze proof and cracking resistance performance, it is preferable that in step 3）In, Chen Hua is at least full
It is enough lower condition：Chen Hua temperature is 30-45 DEG C, and the Chen Hua times are 40-50h.
In the step 3 of the present invention）In, dry actual conditions can be selected in wide scope, but in order that be made
Additive for concrete have more excellent freeze proof and cracking resistance performance, it is preferable that dry at least meet following condition：
Drying temperature is 80-100 DEG C, and drying time is 20-30h.
In the step 3 of the present invention）In, the actual conditions of calcining can be selected in wide scope, but in order that be made
Additive for concrete have more excellent freeze proof and cracking resistance performance, it is preferable that calcine at least meet following condition：
450-500 DEG C is warming up to 5-8 DEG C/min from 15-35 DEG C and is incubated 8-10h, be then warming up to 700-750 DEG C with 2-3 DEG C/min
And it is incubated 3-5h, last natural cooling.
In the step 4 of the present invention）In, the consumption of each material can be selected in wide scope, but in order that obtained
Additive has the performance of more excellent freeze proof and cracking resistance for concrete, it is preferable that in step 4）In, relative to 1mmol
Presoma, the consumption of cyclodextrin is 1.2-2mmol, and the consumption of water is 20-30mL.
In the step 4 of the present invention）In, catalytic actual conditions can be selected in wide scope, but in order that
Obtained additive has the performance of more excellent freeze proof and cracking resistance for concrete, it is preferable that haptoreaction is at least met
Following condition：Reaction temperature is 60-80 DEG C, and the reaction time is 6-10h.
Present invention also offers a kind of crack resistence concrete additive, the crack resistence concrete additive passes through above-mentioned system
Preparation Method is prepared.
The present invention will be described in detail by way of examples below.
Embodiment 1
1）By butyl titanate and ethylene glycol according to 1mmol：9mL amount ratio is in mixing 50min formation solution As at 25 DEG C；
2）By rare earth acetate salt（Cerous acetate）, nano diatomite（Average grain diameter is 5-10nm）, water-soluble vanadic salts（Potassium metavanadate）、
Graphene, 3- (oxygen of 2,3- epoxies third) propyl trimethoxy silicane, citric acid, second alcohol and water are according to 1mmol：0.09mmol：
0.04mmol：0.08mmol：0.3mmol：0.3mmol：8mL：15mL amount ratio is in mixing 50min formation solution Bs at 25 DEG C；
3）Solution B is added dropwise to solution A（The volume ratio of solution A and solution B is 1：2）In, cause instead while ammoniacal liquor is added dropwise and stirs
The pH for answering system is 6.5-7, then in Chen Hua 45h at 35 DEG C, in drying 25h, calcining at 90 DEG C（From 25 DEG C with 6 DEG C/min liters
Temperature is to 480 DEG C and is incubated 9h, is then warming up to 720 DEG C with 2.5 DEG C/min and is incubated 4h, last natural cooling）So that forerunner is made
Body；
4）By presoma, cyclodextrin and water according to 1mmol：1.6mmol：25mL amount ratio is made in haptoreaction 8h at 70 DEG C
Crack resistence concrete additive A1.
Embodiment 2
1）By butyl titanate and ethylene glycol according to 1mmol：8mL amount ratio is in mixing 40min formation solution As at 15 DEG C；
2）By rare earth acetate salt（Acetic acid dysprosium）, nano diatomite（Average grain diameter is 5-10nm）, water-soluble vanadic salts（Sodium vanadate）、
Graphene, 3- (oxygen of 2,3- epoxies third) propyl trimethoxy silicane, citric acid, second alcohol and water are according to 1mmol：0.05mmol：
0.02mmol：0.03mmol：0.1mmol：0.2mmol：4mL：10mL amount ratio is in mixing 40min formation solution Bs at 15 DEG C；
3）Solution B is added dropwise to solution A（The volume ratio of solution A and solution B is 1：1.5）In, cause while ammoniacal liquor is added dropwise and stirs
The pH of reaction system is 6.5-7, then in Chen Hua 40h at 30 DEG C, in drying 20h, calcining at 80 DEG C（From 15 DEG C with 5 DEG C/min
It is warming up to 450 DEG C and is incubated 8h, is then warming up to 700 DEG C with 2 DEG C/min and is incubated 3h, last natural cooling）So that forerunner is made
Body；
4）By presoma, cyclodextrin and water according to 1mmol：1.2mmol：20mL amount ratio is made in haptoreaction 6h at 60 DEG C
Crack resistence concrete additive A2.
Embodiment 3
1）By butyl titanate and ethylene glycol according to 1mmol：10mL amount ratio is in mixing 60min formation solution As at 35 DEG C；
2）By rare earth acetate salt（Acetic acid ytterbium）, nano diatomite（Average grain diameter is 5-10nm）, water-soluble vanadic salts（Dichloro vanadyl）、
Graphene, 3- (oxygen of 2,3- epoxies third) propyl trimethoxy silicane, citric acid, second alcohol and water are according to 1mmol：0.15mmol：
0.06mmol：0.1mmol：0.4mmol：0.4mmol：10mL：20mL amount ratio is in mixing 60min formation solution Bs at 35 DEG C；
3）Solution B is added dropwise to solution A（The volume ratio of solution A and solution B is 1：3）In, cause instead while ammoniacal liquor is added dropwise and stirs
The pH for answering system is 6.5-7, then in Chen Hua 50h at 45 DEG C, in drying 30h, calcining at 100 DEG C（From 35 DEG C with 8 DEG C/min liters
Temperature is to 500 DEG C and is incubated 10h, is then warming up to 750 DEG C with 3 DEG C/min and is incubated 5h, last natural cooling）So that forerunner is made
Body；
4）By presoma, cyclodextrin and water according to 1mmol：2mmol：30mL amount ratio is made in haptoreaction 10h at 80 DEG C
Crack resistence concrete additive A3.
Comparative example 1
Method according to embodiment 1 carries out that concrete additive B1 is made, unlike, nano diatomite is not used.
Comparative example 2
Method according to embodiment 1 carries out that concrete additive B2 is made, unlike, water solubility vanadic salts is not used.
Comparative example 3
Method according to embodiment 1 carries out that concrete additive B3 is made, unlike, graphene is not used.
Comparative example 4
Method according to embodiment 1 carries out that concrete additive B4 is made, unlike, 3- (2,3- the third oxygen of epoxy) third is not used
Base trimethoxy silane.
Comparative example 5
Method according to embodiment 1 carries out that concrete additive B5 is made, unlike, cyclodextrin is not used.
Comparative example 6
Method according to embodiment 1 carries out that concrete additive B6 is made, unlike, nano diatomite is not used and water-soluble
Vanadic salts.
Comparative example 7
Method according to embodiment 1 carries out that concrete additive B7 is made, unlike, graphene and water-soluble vanadium is not used
Salt.
Comparative example 8
Method according to embodiment 1 carries out that concrete additive B8 is made, unlike, 3- (2,3- the third oxygen of epoxy) third is not used
Base trimethoxy silane and water-soluble vanadic salts.
Comparative example 9
Method according to embodiment 1 carries out that concrete additive B9 is made, unlike, cyclodextrin and water-soluble vanadium is not used
Salt.
Detect example 1
By cement, sand, stone, concrete additive and water according to 100：120：40：2：200 weight is than carrying out mixing 2h, so
Conserved 28 days at 25 DEG C and -20 DEG C respectively afterwards, then according to standard《Normal concrete long-term behaviour and endurance quality experiment side
Method standard》Detection seepage-resistant grade, cracking resistance grade are carried out, concrete outcome is shown in Table 1.
Table 1
By above-described embodiment, comparative example and detection example, the concrete additive that the present invention is provided enables to concrete
With excellent freeze proof, cracking resistance and impervious effect.
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of preparation method of crack resistence concrete additive, it is characterised in that including：
1）Butyl titanate and ethylene glycol are mixed to form solution A；
2）By rare earth acetate salt, nano diatomite, water-soluble vanadic salts, graphene, 3- (oxygen of 2,3- epoxies third) propyl trimethoxy
Silane, citric acid, second alcohol and water are mixed to form solution B；
3）The solution B is added dropwise in the solution A, while ammoniacal liquor stirring is added dropwise, then Chen Hua, drying, calcining are with obtained
Presoma；
4）The crack resistence concrete additive is made in cyclodextrin, water and the presoma progress haptoreaction.
2. preparation method according to claim 1, wherein, in step 1）In, relative to butyl titanate described in 1mmol, institute
The consumption for stating ethylene glycol is 8-10mL.
3. preparation method according to claim 1, wherein, in step 1）In, the mixing at least meets following condition：Adopt
Mixed with agitating mode, whipping temp is 15-35 DEG C, and mixing time is 40-60min.
4. the preparation method according to any one in claim 1-3, wherein, in step 2）In, relative to described in 1mmol
Rare earth acetate salt, the consumption of the nano diatomite is 0.05-0.15mmol, and the consumption of the water-soluble vanadic salts is 0.02-
0.06mmol, the consumption of the graphene is 0.03-0.1mmol, 3- (2,3- the third oxygen of the epoxy) propyl trimethoxy silicane
Consumption be 0.1-0.4mmol, the consumption of the citric acid is 0.2-0.4mmol, and the consumption of the ethanol is 4-10mL, described
The consumption of water is 10-20mL.
5. preparation method according to claim 4, wherein, in step 2）In, the mixing at least meets following condition：Adopt
Mixed with agitating mode, whipping temp is 15-35 DEG C, and mixing time is 40-60min.
6. preparation method according to claim 4, wherein, in step 2）In, the rare earth acetate salt is selected from cerous acetate, vinegar
At least one of sour gadolinium, acetic acid dysprosium and acetic acid ytterbium, the average grain diameter of the nano diatomite is 5-10nm, the water-soluble vanadium
Salt is selected from least one of potassium metavanadate, sodium metavanadate, sodium vanadate, vanadyl oxalate, vanadic sulfate and dichloro vanadyl.
7. the preparation method according to any one in claim 4-6, wherein, in step 3）In, the solution A with
The volume ratio of solution B is 1：1.5-3；Also, ammoniacal liquor, which is added dropwise, causes the pH of reaction system to be 6.5-7.
8. preparation method according to claim 7, wherein, the Chen Hua at least meets following condition：Chen Hua temperature is 30-
45 DEG C, the Chen Hua times are 40-50h；
Preferably, the drying at least meets following condition：Drying temperature is 80-100 DEG C, and drying time is 20-30h；
It is highly preferred that the calcining at least meets following condition：450-500 DEG C is warming up to 5-8 DEG C/min and protect from 15-35 DEG C
Warm 8-10h, is then warming up to 700-750 DEG C with 2-3 DEG C/min and is incubated 3-5h, last natural cooling.
9. preparation method according to claim 8, wherein, in step 4）In, the presoma relative to 1mmol, institute
The consumption for stating cyclodextrin is 1.2-2mmol, and the consumption of the water is 20-30mL；
Preferably, the haptoreaction at least meets following condition：Reaction temperature is 60-80 DEG C, and the reaction time is 6-10h.
10. a kind of crack resistence concrete additive, it is characterised in that the crack resistence concrete additive passes through claim 1-
Preparation method in 9 described in any one is prepared.
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| CN110963743A (en) * | 2019-12-14 | 2020-04-07 | 淮北旭日建材有限公司 | Concrete additive capable of preventing cracking and preparation method thereof |
| CN111139931A (en) * | 2020-01-11 | 2020-05-12 | 中交一公局桥隧工程有限公司 | High-crack-resistance concrete structure, construction method and application |
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Application publication date: 20171107 |