CN108929078A - A kind of preparation method of concrete water-proof material - Google Patents
A kind of preparation method of concrete water-proof material Download PDFInfo
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- CN108929078A CN108929078A CN201811104161.XA CN201811104161A CN108929078A CN 108929078 A CN108929078 A CN 108929078A CN 201811104161 A CN201811104161 A CN 201811104161A CN 108929078 A CN108929078 A CN 108929078A
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- concrete
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- proof material
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Classifications
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The present invention relates to a kind of preparation methods of concrete water-proof material, belong to technical field of concrete preparation.Concrete water-proof material early period prepared by the present invention modifies concrete surface by silane modifier, make it have hydrophobic surface, to guarantee the waterproof performance of early period, with the extension of time, when hydrophobic surface is unable to satisfy waterproof demand, the active crystal material absorbing moisture of inside concrete, it is grown along concrete crack, moisture is stopped to enter in concrete, with permanently effective waterproof effect, simultaneously because gap tails off in concrete, concrete density is improved, there is reinforcing effect to concrete；Concrete water-proof material feedstock source prepared by the present invention is wide, and cost is less expensive, has long-term excellent waterproof effect.
Description
Technical field
The present invention relates to a kind of preparation methods of concrete water-proof material, belong to concrete preparation field.
Background technique
Concrete is a kind of porous, heterogeneous material, and porosity characteristic makes concrete have high osmosis, in air
Middle CO2、SO2Under equal sour gas, Sulfates hazardous medium and the collective effect of multiple factors such as loaded, concrete material
It can gradually degrade, durability reduces.The factor for influencing concrete durability is more, and failure mechanism is also very complicated, but largely grinds
Study carefully show concrete occur endurance issues degradation mechanism it is mostly related with the presence of moisture and migration, for example, when water and mixed
When solidifying soil surface contact, the hydrophily of concrete makes water electrode easily be adsorbed onto concrete surface layer through capillary action, and with capillary
Pipe is that channel further penetrates into inside concrete；And when concrete is all immersed in aqueous solution, aqueous solution is both with capillary
Absorption, and inside concrete is penetrated into the form permeated, spread, if containing Cl in aqueous solution at this time-、SO4 2, magnesium
The harmful ions such as salt, ion are then transported in inside concrete hole with the migration of moisture, are occurred with concrete hydrating product
A series of physical, chemical reaction reduce rebar surface passivation film thickness, cause steel bar corrosion, reduce concrete structural strength；If
Alkali-silicic acid gel is generated containing compared with polybase, the active constituent in aggregate can also react with the alkali in cement in cement,
In the presence of having moisture, the expansion of reaction product water suction volume causes the destruction of concrete structure；In addition to this, if coagulation
When soil is chronically at wet environment or contacts with aqueous solution, water can be by the Ca(OH in concrete as solvent)2Dissolution, makes other
Hydrated product such as C-S-H etc. decomposes dissolved, destroys concrete structure；A large number of experiments show that enough moisture participations are coagulations
The necessary condition of freeze-thaw damage, sulfate attack, alkali-aggregate reaction occurs for soil.Therefore, concrete surface water absorption character, right is studied
Concrete carries out water repellent treatment, has a very important significance to durability is improved.
Kind that there are many methods for preventing moisture from spreading to inside concrete, including preferred cement, aggregate, the reduction ratio of mud,
Improve construction method etc., but improve there are two ways to concrete water-proof effect is most direct, simple at present, first is that interior mix waterproof material
Material: being added waterproofing agent when preparing concrete, to improve concrete permeability resistance, achievees the purpose that prevent moisture intrusion, but should
Method is only applicable to use in small area concrete, is integrally handled mass concrete, can increase considerably and be processed into
This；Second is that water repellent treatment is carried out to concrete, by being formed in concrete surface in concrete surface coated with water blocking material
The forms such as protective coating, hydrophobic film play the role of preventing moisture from invading.In recent years, due to osmosis type waterproof material (silanes
Material, low polymerization degree siloxanes, boil the products such as Linseed oil) have certain permeability, can be certain in concrete surface
Hydrophobic membrane is formed in depth bounds, is adjusted concrete surface free energy, so that concrete surface is become hydrophobicity from hydrophily, together
When coagulation permeability of air it is unaffected, obtained the concern and application of domestic and international civil engineering field.But certainly by silane
The defects of body limitation, general silane monomer waterproof material is often big there is volatility during application, and with when
Between extension, waterproof effect can gradually decrease.Therefore, in conjunction with concrete own characteristic, by adding silicon in silane material
Colloidal sol makes it form organic-inorganic waterproof material in concrete surface, to concrete water-proof ability is improved, enhances concrete knot
Structure and durability are of great significance.
Summary of the invention
The technical problems to be solved by the invention: for existing silane monomer waterproof material during application often
The defects of big there is volatility, and with the extension of time, the problem of its waterproof effect can gradually decrease, proposes one kind
The preparation method of concrete water-proof material.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
(1) it takes salt affected soil and is put into calcination in Muffle furnace and obtain dry saline-alkali soil；
(2) it takes dry saline-alkali soil, lime stone, flyash, ardealite and fluorgypsum to be stirred, be crushed, grind, obtains mixture
A；
(3) it is crushed after taking slag and silicon ash to mix, merging ball mill is ground, and mixture B is obtained；
(4) crushing grinding again after mixture A and mixture B are mixed, obtains raw material；
(5) raw material are placed in 900 DEG C of high temperature furnaces, preheat 30min, then heats to 1300 DEG C of calcining 1h, then keep the temperature
30min obtains clinker；
(6) clinker is taken out and is cooled down, clinker after cooling is ground, crossed 200 meshes, obtain cement；
(7) cement, sodium citrate, sodium metasilicate, white lime, sodium methyl silicate, river sand, deionized water and water-reducing agent is taken to be stirred
1h obtains mixture C；
(8) it takes tridecafluoro-n-octyltriethoxysilane and mixture C to be stirred 1h and obtains concrete water-proof material.
Step (1) the Muffle furnace calcination temperature is 900 DEG C, calcination time 1h.
Step (2) the dry saline-alkali soil, lime stone, flyash, ardealite and fluorgypsum mass ratio be 2:10:2:1:
1。
Step (3) slag and the mass ratio of silicon ash are 4:1.
The mass ratio of step (4) the mixture A and mixture B is 3:1.
Step (5) heating rate is 10 DEG C/min.
Step (7) cement, sodium citrate, sodium metasilicate, white lime, sodium methyl silicate, river sand, deionized water and diminishing
The mass ratio of agent is 100:2:10:20:4:150:30:5, and affiliated water-reducing agent is polycarboxylic acids dehydragent.
Step (8) tridecafluoro-n-octyltriethoxysilane and the mass ratio of mixture C are 1:150.
The present invention is compared with other methods, and advantageous effects are:
(1) contain a large amount of salt in salt affected soil, by being used as concrete material that can reduce concrete material after high temperature sintering
Cost of manufacture；Sodium citrate, sodium metasilicate isoreactivity crystalline solid are added in cement, so that concrete material solidifies in construction
In the process, the cement granules or free calcium oxide and calcium hydroxide and active crystal of the incomplete aquation in concrete
Substance phase reaction generates insoluble calcium silicates, and the calcium silicates volume expansion of generation is grown in the small gaps of concrete,
And cram these gaps, it prevents moisture from entering in concrete, reaches waterproof, seepage control effect, simultaneously because gap becomes in concrete
It is few, concrete density is improved, there is reinforcing effect to concrete；Ten trifluoro octyls, three second is finally added in concrete material
Oxysilane modifies it to surface of concrete, forms hydrophobic surface, further strengthens the anti-of concrete material
Water effect；
(2) concrete water-proof prepared by the present invention is modified concrete surface by silane modifier material early period, makes
It is with hydrophobic surface, to guarantee the waterproof performance of early period, with the extension of time, when hydrophobic surface is unable to satisfy waterproof
When demand, the active crystal material absorbing moisture of inside concrete is grown along concrete crack, and moisture is stopped to enter concrete
In, there is permanently effective waterproof effect, while also improving the intensity of concrete itself.
Specific embodiment
It takes 5 ~ 10kg salt affected soil and is put into Muffle furnace, be warming up to 900 DEG C, 2 ~ 4h of calcination obtains drying saline and alkaline
Soil；Take the dry saline-alkali soil of 2~4kg, 10~20kg lime stone, 2~4kg flyash, 1~2kg ardealite and 1~2kg fluorgypsum
It is stirred, is crushed, grinds, obtain mixture A；Be crushed after taking 4 ~ 8kg slag and 2 ~ 4kg silicon ash to mix, merging ball mill into
Row grinding, obtains mixture B；Crushing grinding again after taking 15 ~ 30kg mixture A and 5 ~ 10kg mixture B to be mixed, obtains
Raw material；Raw material are placed in 900 DEG C of high temperature furnaces, 30min is preheated, high temperature furnace is then warming up to 1300 with the rate of 10 DEG C/min
DEG C calcining 1h, then keep the temperature 30min, obtain clinker；Clinker is taken out and is cooled down, clinker after cooling is ground, crosses 200 meshes,
Obtain cement；Take 10 ~ 20kg cement, 0.2 ~ 0.4kg sodium citrate, 1 ~ 2kg sodium metasilicate, 2 ~ 4kg white lime, 0.4 ~ 0.8kg first
Base sodium metasilicate, 15 ~ 30kg river sand, 3 ~ 6kg deionized water and 0.5 ~ 1.0kg polycarboxylic acids dehydragent are stirred 1h, are mixed
Close object C；Taking 0.2 ~ 0.4kg tridecafluoro-n-octyltriethoxysilane and 30 ~ 60kg mixture C to be stirred 1h, to obtain concrete anti-
Water material.
It takes 5kg salt affected soil and is put into Muffle furnace, be warming up to 900 DEG C, calcination 2h, obtain dry saline-alkali soil；It takes
2kg dries saline-alkali soil, 10kg lime stone, 2kg flyash, 1kg ardealite and 1kg fluorgypsum and is stirred, is crushed, grinds, and obtains
To mixture A；It is crushed after taking 4kg slag and 2kg silicon ash to mix, merging ball mill is ground, and mixture B is obtained；Take 15kg
Crushing grinding again after mixture A and 5kg mixture B is mixed, obtains raw material；Raw material are placed in 900 DEG C of high temperature furnaces, in advance
Then high temperature furnace is warming up to 1300 DEG C of calcining 1h with the rate of 10 DEG C/min, then keeps the temperature 30min, obtain ripe by hot 30min
Material；Clinker is taken out and is cooled down, clinker after cooling is ground, 200 meshes is crossed, obtains cement；Take 10kg cement, 0.2kg lemon
Sour sodium, 1kg sodium metasilicate, 2kg white lime, 0.4kg sodium methyl silicate, 15kg river sand, 3kg deionized water and 0.5kg polycarboxylic acid
Water-reducing agent is stirred 1h, obtains mixture C；0.2kg tridecafluoro-n-octyltriethoxysilane and 30kg mixture C is taken to stir mixed
It closes 1h and obtains concrete water-proof material.
It takes 7kg salt affected soil and is put into Muffle furnace, be warming up to 900 DEG C, calcination 3h, obtain dry saline-alkali soil；It takes
3kg dries saline-alkali soil, 15kg lime stone, 3kg flyash, 1.5kg ardealite and 1.5kg fluorgypsum and is stirred, is crushed, grinds
Mill, obtains mixture A；It is crushed after taking 6kg slag and 3kg silicon ash to mix, merging ball mill is ground, and mixture B is obtained；It takes
Crushing grinding again after 23kg mixture A and 7kg mixture B is mixed, obtains raw material；Raw material are placed in 900 DEG C of high temperature furnaces
It is interior, 30min is preheated, high temperature furnace is then warming up to 1300 DEG C of calcining 1h with the rate of 10 DEG C/min, 30min is then kept the temperature, obtains
To clinker；Clinker is taken out and is cooled down, clinker after cooling is ground, 200 meshes is crossed, obtains cement；Take 15kg cement, 0.3kg
Sodium citrate, 1.5kg sodium metasilicate, 3kg white lime, 0.6kg sodium methyl silicate, 23kg river sand, 5kg deionized water and 0.7kg are poly-
Carboxylic acid type water reducing agent is stirred 1h, obtains mixture C；Take 0.3kg tridecafluoro-n-octyltriethoxysilane and 45kg mixture C
It is stirred 1h and obtains concrete water-proof material.
It takes 10kg salt affected soil and is put into Muffle furnace, be warming up to 900 DEG C, calcination 4h, obtain dry saline-alkali soil；It takes
4kg dries saline-alkali soil, 20kg lime stone, 4kg flyash, 2kg ardealite and 2kg fluorgypsum and is stirred, is crushed, grinds, and obtains
To mixture A；It is crushed after taking 8kg slag and 4kg silicon ash to mix, merging ball mill is ground, and mixture B is obtained；Take 30kg
Crushing grinding again after mixture A and 10kg mixture B is mixed, obtains raw material；Raw material are placed in 900 DEG C of high temperature furnaces,
30min is preheated, high temperature furnace is then warming up to 1300 DEG C of calcining 1h with the rate of 10 DEG C/min, 30min is then kept the temperature, obtains ripe
Material；Clinker is taken out and is cooled down, clinker after cooling is ground, 200 meshes is crossed, obtains cement；Take 20kg cement, 0.4kg lemon
Sour sodium, 2kg sodium metasilicate, 4kg white lime, 0.8kg sodium methyl silicate, 30kg river sand, 6kg deionized water and 1kg polycarboxylic acid subtract
Aqua is stirred 1h, obtains mixture C；0.2kg tridecafluoro-n-octyltriethoxysilane is taken to be stirred with 30kg mixture C
1h obtains concrete water-proof material.
Concrete water-proof material and commercial concrete waterproof material prepared by the present invention is taken to be detected, specific testing result
Such as following table table 1:
Detection method:
It is provided according to national standard GB/18445-2012 standard, the concrete water-proof material of embodiment 1-3 and comparative example 1 is prevented
Water performance test, as a result as shown in table 1 below.
1 concrete material waterproof performance of table characterization
| Performance characterization | Example 1 | Example 2 | Example 3 | Comparative example |
| 28d impermeability pressure (MPa) | 1.2 | 1.2 | 1.2 | 1.1 |
| 28d impermeability pressure ratio (%) | 400 | 397 | 398 | 333 |
Concrete water-proof material prepared by the present invention has excellent waterproof, seepage control performance as shown in Table 1, and the present invention has extremely
Wide market application value.
Claims (8)
1. a kind of preparation method of concrete water-proof material, which is characterized in that specific production step are as follows:
(1) it takes salt affected soil and is put into calcination in Muffle furnace and obtain dry saline-alkali soil；
(2) it takes dry saline-alkali soil, lime stone, flyash, ardealite and fluorgypsum to be stirred, be crushed, grind, obtains mixture
A；
(3) it is crushed after taking slag and silicon ash to mix, merging ball mill is ground, and mixture B is obtained；
(4) crushing grinding again after mixture A and mixture B are mixed, obtains raw material；
(5) raw material are placed in 900 DEG C of high temperature furnaces, preheat 30min, then heats to 1300 DEG C of calcining 1h, then keep the temperature
30min obtains clinker；
(6) clinker is taken out and is cooled down, clinker after cooling is ground, crossed 200 meshes, obtain cement；
(7) cement, sodium citrate, sodium metasilicate, white lime, sodium methyl silicate, river sand, deionized water and water-reducing agent is taken to be stirred
1h obtains mixture C；
(8) it takes tridecafluoro-n-octyltriethoxysilane and mixture C to be stirred 1h and obtains concrete water-proof material.
2. a kind of preparation method of concrete water-proof material as described in claim 1, which is characterized in that step (1) described horse
Not furnace calcination temperature is 900 DEG C, calcination time 1h.
3. a kind of preparation method of concrete water-proof material as described in claim 1, which is characterized in that step (2) is described dry
Dry saline-alkali soil, lime stone, flyash, ardealite and fluorgypsum mass ratio be 2:10:2:1:1.
4. a kind of preparation method of concrete water-proof material as described in claim 1, which is characterized in that step (3) described mine
Slag and the mass ratio of silicon ash are 4:1.
5. a kind of preparation method of concrete water-proof material as described in claim 1, which is characterized in that step (4) is described mixed
The mass ratio for closing object A and mixture B is 3:1.
6. a kind of preparation method of concrete water-proof material as described in claim 1, which is characterized in that step (5) described liter
Warm rate is 10 DEG C/min.
7. a kind of preparation method of concrete water-proof material as described in claim 1, which is characterized in that step (7) described water
Mud, sodium citrate, sodium metasilicate, white lime, sodium methyl silicate, river sand, deionized water and water-reducing agent mass ratio be 100:2:10:
20:4:150:30:5, affiliated water-reducing agent are polycarboxylic acids dehydragent.
8. a kind of preparation method of concrete water-proof material as described in claim 1, which is characterized in that step (8) described ten
The mass ratio of trifluoro octyltri-ethoxysilane and mixture C is 1:150.
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| CN201811104161.XA CN108929078A (en) | 2018-09-21 | 2018-09-21 | A kind of preparation method of concrete water-proof material |
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| CN201811104161.XA CN108929078A (en) | 2018-09-21 | 2018-09-21 | A kind of preparation method of concrete water-proof material |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1472258A (en) * | 2003-05-08 | 2004-02-04 | 同济大学 | Cement based penetrative crystallized waterproof material and its preparation |
| CN101037313A (en) * | 2007-02-08 | 2007-09-19 | 朱安庆 | Polymer concrete dry-powder water-proof sticking mortar additive for construction |
| CN102584159A (en) * | 2012-01-13 | 2012-07-18 | 唐秋生 | Invisible waterproofing agent and preparation process thereof |
| CN103964892A (en) * | 2014-04-29 | 2014-08-06 | 青岛理工大学 | Silica sol-organosilicone monomer capillary crystalline waterproof material and preparation method thereof |
| CN108191296A (en) * | 2018-03-23 | 2018-06-22 | 常德市万福达环保节能建材有限公司 | A kind of concrete waterproofer |
-
2018
- 2018-09-21 CN CN201811104161.XA patent/CN108929078A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1472258A (en) * | 2003-05-08 | 2004-02-04 | 同济大学 | Cement based penetrative crystallized waterproof material and its preparation |
| CN101037313A (en) * | 2007-02-08 | 2007-09-19 | 朱安庆 | Polymer concrete dry-powder water-proof sticking mortar additive for construction |
| CN102584159A (en) * | 2012-01-13 | 2012-07-18 | 唐秋生 | Invisible waterproofing agent and preparation process thereof |
| CN103964892A (en) * | 2014-04-29 | 2014-08-06 | 青岛理工大学 | Silica sol-organosilicone monomer capillary crystalline waterproof material and preparation method thereof |
| CN108191296A (en) * | 2018-03-23 | 2018-06-22 | 常德市万福达环保节能建材有限公司 | A kind of concrete waterproofer |
Non-Patent Citations (1)
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| 万建华等: "滨海盐碱土资源化利用的新探索与研究", 《国土与自然资源研究》 * |
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