CN110963752A - Acid-resistant concrete and preparation method and application thereof - Google Patents
Acid-resistant concrete and preparation method and application thereof Download PDFInfo
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- CN110963752A CN110963752A CN201911372669.2A CN201911372669A CN110963752A CN 110963752 A CN110963752 A CN 110963752A CN 201911372669 A CN201911372669 A CN 201911372669A CN 110963752 A CN110963752 A CN 110963752A
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- acid
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- resistant concrete
- concrete
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- 239000004567 concrete Substances 0.000 title claims abstract description 64
- 239000002253 acid Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000000835 fiber Substances 0.000 claims abstract description 49
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000010902 straw Substances 0.000 claims abstract description 31
- 239000002131 composite material Substances 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 28
- 239000004743 Polypropylene Substances 0.000 claims abstract description 21
- 239000003365 glass fiber Substances 0.000 claims abstract description 21
- -1 polypropylene Polymers 0.000 claims abstract description 21
- 229920001155 polypropylene Polymers 0.000 claims abstract description 21
- 239000004568 cement Substances 0.000 claims abstract description 19
- 239000003822 epoxy resin Substances 0.000 claims abstract description 19
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 239000010881 fly ash Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 7
- 239000002956 ash Substances 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002154 agricultural waste Substances 0.000 abstract description 3
- 239000002440 industrial waste Substances 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 230000010220 ion permeability Effects 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- 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
- C04B2111/23—Acid resistance, e.g. against acid air or rain
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses acid-resistant concrete and a preparation method and application thereof, wherein the acid-resistant concrete comprises the following raw materials in parts by weight: 40-50 parts of cement, 5-8 parts of composite fiber, 8-10 parts of epoxy resin, 5-8 parts of 2-mercaptobenzothiazole, 20-25 parts of desulfurized fly ash, 10-15 parts of straw, 8-10 parts of vitrified micro bubbles and 40-45 parts of water; the composite fiber is obtained by mixing glass fiber and polypropylene fiber, wherein the mass ratio of the glass fiber to the polypropylene fiber is (1-2): 1. the acid-resistant concrete is obtained by mixing the raw materials in batches according to the parts by weight and finally curing. The acid-resistant concrete provided by the invention has a reasonable formula, and all components interact with each other, so that the obtained concrete has good strength and density and simultaneously has a good acid-resistant effect; meanwhile, special equipment is not needed in the preparation process, the process is simple, industrial and agricultural wastes are used as raw materials, so that the environment is protected, the cost is reduced, and the industrial production is facilitated.
Description
Technical Field
The invention relates to the field of concrete, in particular to acid-resistant concrete and a preparation method and application thereof.
Background
Concrete is the most commonly used material in the building industry, the main component of the concrete is cement, the consumption of the concrete is continuously increased along with the continuous development of the society, the requirement on the performance of the concrete is higher and higher, the report that the concrete is corroded by acid to cause the danger of certain buildings is frequent, particularly, the condition is more serious under some acid environments, the acid resistance of the concrete can cause potential safety hazards on one hand, and on the other hand, the sudden reduction of the service life of the concrete can cause great cost problems, and how to provide a concrete material with higher acid resistance is very important.
Desulfurized fly ash is a waste product produced in the production of power plant boilers, and the annual costs of disposing of this waste product are not insignificant. The straws are the residual parts of the harvested crops after seeds are harvested, and farmers generally burn the straws directly, so that on one hand, recyclable resources are wasted, and on the other hand, the straws have certain harm to the environment. How to recycle the desulfurized fly ash and the straws is very significant.
Disclosure of Invention
The invention aims to provide acid-resistant concrete with better acid resistance. The method is realized by the following technical scheme:
the acid-resistant concrete comprises the following raw materials in parts by weight: 40-50 parts of cement, 5-8 parts of composite fiber, 8-10 parts of epoxy resin, 5-8 parts of 2-mercaptobenzothiazole, 20-25 parts of desulfurized fly ash, 10-15 parts of straw, 8-10 parts of vitrified micro bubbles and 40-45 parts of water; the composite fiber is obtained by mixing glass fiber and polypropylene fiber, wherein the mass ratio of the glass fiber to the polypropylene fiber is (1-2): 1.
because the concrete is corroded by acid and mainly the acid enters the concrete through the gaps of the concrete and the subsequent cracking, the acid-resistant concrete is designed mainly by increasing the compactness of the concrete and the anti-cracking performance of the concrete, and therefore the acid-resistant concrete is controlled by adding the composite fiber, the epoxy resin and the 2-mercaptobenzothiazole, the epoxy groups in the composite fiber and the epoxy resin and the benzene ring structure in the 2-mercaptobenzothiazole can enable the concrete to form a net structure with higher strength, molecular chains are not easy to break, the condition that the concrete has microcracks can be effectively controlled, and the acid resistance of the concrete is improved; and the vitrified micro bubbles are used for filling gaps in the network structure, so that the compactness of the concrete is increased, and the density of the concrete is increased; finally, the invention adopts the industrial waste desulfurized ash and the agricultural waste straws as raw materials, thereby reducing the use amount of cement, reducing the cost on one hand, and conforming to the concept of resource recycling on the other hand.
In addition, the straws are rich in microelements such as nitrogen, phosphorus, potassium, calcium, magnesium and the like, and can be complexed with other components of the concrete so as to increase the strength of the concrete and reduce gaps in the concrete; the straw also contains lignin which can be used as a water reducing agent to reduce the water content in the concrete and reduce the fluidity of the concrete, thereby increasing the density of the concrete and further improving the acid resistance of the concrete. The acid-resistant concrete prepared by the invention can be at least applied to the field of construction.
In some preferred embodiments, the acid-resistant concrete comprises the following raw materials in parts by weight: 45 parts of cement, 6 parts of composite fiber, 9 parts of epoxy resin, 7 parts of 2-mercaptobenzothiazole, 23 parts of desulfurized fly ash, 12 parts of straw, 9 parts of vitrified micro bubbles and 43 parts of water; the composite fiber is obtained by mixing glass fiber and polypropylene fiber, wherein the mass ratio of the glass fiber to the polypropylene fiber is 1: 1.
in some preferred embodiments, the acid-resistant concrete comprises the following raw materials in parts by weight: 42 parts of cement, 5 parts of composite fiber, 8 parts of epoxy resin, 6 parts of 2-mercaptobenzothiazole, 25 parts of desulfurized fly ash, 14 parts of straw, 8 parts of vitrified micro bubbles and 41 parts of water; the composite fiber is obtained by mixing glass fiber and polypropylene fiber, wherein the mass ratio of the glass fiber to the polypropylene fiber is 2: 1.
in some preferred embodiments, the acid-resistant concrete comprises the following raw materials in parts by weight: 48 parts of cement, 8 parts of composite fiber, 10 parts of epoxy resin, 8 parts of 2-mercaptobenzothiazole, 20 parts of desulfurized fly ash, 10 parts of straw, 10 parts of vitrified micro bubbles and 45 parts of water; the composite fiber is obtained by mixing glass fiber and polypropylene fiber, wherein the mass ratio of the glass fiber to the polypropylene fiber is 1: 1.
the invention also provides a preparation method of the acid-resistant concrete, which comprises the following steps:
s1: uniformly mixing cement, water, straw powder and desulfurized ash according to the parts by weight to obtain a mixture A; the straw powder is prepared by grinding straws;
s2: adding 2-mercaptobenzothiazole, epoxy resin and composite fiber into the mixture A according to the weight parts, and uniformly mixing to obtain a mixture B;
s3: and adding the vitrified micro bubbles into the mixture B according to the weight part, uniformly mixing, and pouring into a mould for curing to obtain the acid-resistant concrete.
The invention has the beneficial effects that: the acid-resistant concrete provided by the invention has a reasonable formula, and all components interact with each other, so that the obtained concrete has good strength and density and simultaneously has a good acid-resistant effect; meanwhile, special equipment is not needed in the preparation process, the process is simple, industrial and agricultural wastes are used as raw materials, so that the environment is protected, the cost is reduced, and the industrial production is facilitated.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described in the following embodiments to fully understand the objects, aspects and effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example 1:
the acid-resistant concrete comprises the following raw materials in parts by weight: 45 parts of cement, 6 parts of composite fiber (obtained by mixing glass fiber and polypropylene fiber in a mass ratio of 1: 1), 9 parts of epoxy resin, 7 parts of 2-mercaptobenzothiazole, 23 parts of desulfurized fly ash, 12 parts of straw, 9 parts of vitrified micro bubbles and 43 parts of water. The preparation process comprises the following steps:
s1: uniformly mixing cement, water, straw powder (prepared by grinding straws) and desulfurized ash according to the parts by weight to obtain a mixture A;
s2: adding 2-mercaptobenzothiazole, epoxy resin and composite fiber into the mixture A according to the weight parts, and uniformly mixing to obtain a mixture B;
s3: and adding the vitrified micro bubbles into the mixture B according to the weight part, uniformly mixing, and pouring into a mould for curing to obtain the acid-resistant concrete.
Example 2:
the acid-resistant concrete comprises the following raw materials in parts by weight: 42 parts of cement, 5 parts of composite fiber (obtained by mixing glass fiber and polypropylene fiber in a mass ratio of 2: 1), 8 parts of epoxy resin, 6 parts of 2-mercaptobenzothiazole, 25 parts of desulfurized fly ash, 14 parts of straw, 8 parts of vitrified micro bubbles and 41 parts of water. The preparation process comprises the following steps:
s1: uniformly mixing cement, water, straw powder (prepared by grinding straws) and desulfurized ash according to the parts by weight to obtain a mixture A;
s2: adding 2-mercaptobenzothiazole, epoxy resin and composite fiber into the mixture A according to the weight parts, and uniformly mixing to obtain a mixture B;
s3: and adding the vitrified micro bubbles into the mixture B according to the weight part, uniformly mixing, and pouring into a mould for curing to obtain the acid-resistant concrete.
Example 3:
the acid-resistant concrete comprises the following raw materials in parts by weight: 48 parts of cement, 8 parts of composite fiber (obtained by mixing glass fiber and polypropylene fiber in a mass ratio of 1: 1), 10 parts of epoxy resin, 8 parts of 2-mercaptobenzothiazole, 20 parts of desulfurized fly ash, 10 parts of straw, 10 parts of vitrified micro bubbles and 45 parts of water. The preparation process comprises the following steps:
s1: uniformly mixing cement, water, straw powder (prepared by grinding straws) and desulfurized ash according to the parts by weight to obtain a mixture A;
s2: adding 2-mercaptobenzothiazole, epoxy resin and composite fiber into the mixture A according to the weight parts, and uniformly mixing to obtain a mixture B;
s3: and adding the vitrified micro bubbles into the mixture B according to the weight part, uniformly mixing, and pouring into a mould for curing to obtain the acid-resistant concrete.
Example 4:
according to the test methods of chloride ion permeability resistance and sulfate corrosion resistance in GB/T50082-2009 test method Standard for Long-term Performance and durability of ordinary concrete, the acid-resistant concrete prepared in examples 1-3 is tested, and the results are shown in tables 1 and 2, and it can be known from tables 1 and 2 that the acid-resistant concrete prepared by the invention has good acid resistance.
TABLE 1 concrete impermeability chloride ion test results
TABLE 2 concrete impervious sulfate test results
| Number of attacks | Compressive strength/MP | Corrosion resistance coefficient (K)f) | |
| Example 1 | 120 | 78.4 | 97.2％ |
| Example 2 | 120 | 72.3 | 96.9％ |
| Example 3 | 120 | 73.9 | 96.8％ |
Claims (6)
1. The acid-resistant concrete is characterized by comprising the following raw materials in parts by weight: 40-50 parts of cement, 5-8 parts of composite fiber, 8-10 parts of epoxy resin, 5-8 parts of 2-mercaptobenzothiazole, 20-25 parts of desulfurized fly ash, 10-15 parts of straw, 8-10 parts of vitrified micro bubbles and 40-45 parts of water; the composite fiber is obtained by mixing glass fiber and polypropylene fiber, wherein the mass ratio of the glass fiber to the polypropylene fiber is (1-2): 1.
2. the acid-resistant concrete according to claim 1, which comprises the following raw materials in parts by weight: 45 parts of cement, 6 parts of composite fiber, 9 parts of epoxy resin, 7 parts of 2-mercaptobenzothiazole, 23 parts of desulfurized fly ash, 12 parts of straw, 9 parts of vitrified micro bubbles and 43 parts of water; the composite fiber is obtained by mixing glass fiber and polypropylene fiber, wherein the mass ratio of the glass fiber to the polypropylene fiber is 1: 1.
3. the acid-resistant concrete according to claim 1, which comprises the following raw materials in parts by weight: 42 parts of cement, 5 parts of composite fiber, 8 parts of epoxy resin, 6 parts of 2-mercaptobenzothiazole, 25 parts of desulfurized fly ash, 14 parts of straw, 8 parts of vitrified micro bubbles and 41 parts of water; the composite fiber is obtained by mixing glass fiber and polypropylene fiber, wherein the mass ratio of the glass fiber to the polypropylene fiber is 2: 1.
4. the acid-resistant concrete according to claim 1, which comprises the following raw materials in parts by weight: 48 parts of cement, 8 parts of composite fiber, 10 parts of epoxy resin, 8 parts of 2-mercaptobenzothiazole, 20 parts of desulfurized fly ash, 10 parts of straw, 10 parts of vitrified micro bubbles and 45 parts of water; the composite fiber is obtained by mixing glass fiber and polypropylene fiber, wherein the mass ratio of the glass fiber to the polypropylene fiber is 1: 1.
5. a method for preparing acid-resistant concrete according to any one of claims 1 to 4, comprising the steps of:
s1: uniformly mixing cement, water, straw powder and desulfurized ash according to the parts by weight to obtain a mixture A; the straw powder is prepared by grinding straws;
s2: adding 2-mercaptobenzothiazole, epoxy resin and composite fiber into the mixture A according to the weight parts, and uniformly mixing to obtain a mixture B;
s3: and adding the vitrified micro bubbles into the mixture B according to the weight part, uniformly mixing, and pouring into a mould for curing to obtain the acid-resistant concrete.
6. Use of the acid-resistant concrete according to any one of claims 1 to 4 in the field of construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911372669.2A CN110963752A (en) | 2019-12-27 | 2019-12-27 | Acid-resistant concrete and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911372669.2A CN110963752A (en) | 2019-12-27 | 2019-12-27 | Acid-resistant concrete and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110963752A true CN110963752A (en) | 2020-04-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911372669.2A Pending CN110963752A (en) | 2019-12-27 | 2019-12-27 | Acid-resistant concrete and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110963752A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007070153A (en) * | 2005-09-06 | 2007-03-22 | Japan Sewage Works Agency | Highly acid-resistant mortar composition having improved troweling operability |
| CN104891888A (en) * | 2015-06-19 | 2015-09-09 | 爱尔建材(天津)有限公司 | Imitated stone environment-friendly concrete road brick and making method thereof |
| CN106045390A (en) * | 2016-05-27 | 2016-10-26 | 宜兴市太湖地基工程有限公司 | Acid-resistant and alkali-resistant concrete and method for preparing same |
| CN106186864A (en) * | 2016-07-08 | 2016-12-07 | 华北水利水电大学 | A kind of Novel polypropylene fiber concrete and preparation method thereof |
| CN108640576A (en) * | 2018-05-18 | 2018-10-12 | 陆伟 | A kind of super dense form lightweight concrete for building |
-
2019
- 2019-12-27 CN CN201911372669.2A patent/CN110963752A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007070153A (en) * | 2005-09-06 | 2007-03-22 | Japan Sewage Works Agency | Highly acid-resistant mortar composition having improved troweling operability |
| CN104891888A (en) * | 2015-06-19 | 2015-09-09 | 爱尔建材(天津)有限公司 | Imitated stone environment-friendly concrete road brick and making method thereof |
| CN106045390A (en) * | 2016-05-27 | 2016-10-26 | 宜兴市太湖地基工程有限公司 | Acid-resistant and alkali-resistant concrete and method for preparing same |
| CN106186864A (en) * | 2016-07-08 | 2016-12-07 | 华北水利水电大学 | A kind of Novel polypropylene fiber concrete and preparation method thereof |
| CN108640576A (en) * | 2018-05-18 | 2018-10-12 | 陆伟 | A kind of super dense form lightweight concrete for building |
Non-Patent Citations (3)
| Title |
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