CN114315263A - Epoxy resin-based permeable filling material and preparation method and application thereof - Google Patents
Epoxy resin-based permeable filling material and preparation method and application thereof Download PDFInfo
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- CN114315263A CN114315263A CN202111474302.9A CN202111474302A CN114315263A CN 114315263 A CN114315263 A CN 114315263A CN 202111474302 A CN202111474302 A CN 202111474302A CN 114315263 A CN114315263 A CN 114315263A
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- epoxy resin
- ceramsite
- filling material
- water
- curing agent
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- 239000003822 epoxy resin Substances 0.000 title claims abstract description 77
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 77
- 239000000463 material Substances 0.000 title claims abstract description 68
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000004568 cement Substances 0.000 claims abstract description 26
- 239000006004 Quartz sand Substances 0.000 claims abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000002156 mixing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000035699 permeability Effects 0.000 abstract description 18
- 239000002002 slurry Substances 0.000 abstract description 4
- 230000002745 absorbent Effects 0.000 abstract description 2
- 239000002250 absorbent Substances 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 16
- 238000005303 weighing Methods 0.000 description 15
- 235000019994 cava Nutrition 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Epoxy Resins (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an epoxy resin-based permeable filling material and a preparation method and application thereof, wherein the epoxy resin-based permeable filling material comprises the following components in parts by weight: 1 part of ceramsite, 0-0.3 part of quartz sand, 0-0.3 part of cement, 0.05-0.1 part of epoxy resin, 0.025-0.05 part of curing agent and 0-0.3 part of water. Ceramsite, quartz sand, epoxy resin, a curing agent, cement and water are selected as components, wherein the ceramsite is used as a coarse aggregate, and is mainly used for providing a supporting framework of the material and assisting in adjusting the water permeability and the pressure resistance of the material; the epoxy resin and the curing agent are used as main cementing agents to mainly adjust the permeability of the material and assist in adjusting the compressive strength of the material, and the cement slurry is used as an auxiliary cementing agent to mainly adjust the compressive strength of the material under the condition of high requirement on the compressive strength of the permeable filling material. The quartz sand is fine aggregate, assists in adjusting the compressive strength and the permeability of the material, and is used as a heat absorbent for the curing reaction of the epoxy resin.
Description
Technical Field
The invention belongs to the field of water-filled karst caves in water-rich strata and permeable filling treatment of goafs, and particularly relates to an epoxy resin-based permeable filling material as well as a preparation method and application thereof, in particular to application in permeable filling of the karst caves or the goafs in a karst development stratum of a spring area.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With the increase of traffic engineering and urban subway construction, more and more situations are encountered in construction of water-filled karst caves and water-rich goafs, the filling treatment of the water-filled karst caves and the water-rich goafs is more and more urgent, and the following common filling materials are adopted at present: 1. gel filling material, 2 paste filling material, 3 sandstone-cement base filling material. The inventor finds that the filling materials only consider the strength of the filling body and do not consider the water permeability of the filling body when the filling materials are used for filling and treating the karst cave or the goaf, so that the strength of the filling materials is surplus, the water permeability is insufficient, and the materials are not suitable for the stratum with strong karst development in the spring region due to the requirement of protecting the mobility of underground water.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an epoxy resin-based permeable filling material and a preparation method and application thereof.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, the invention provides an epoxy resin-based water-permeable filling material, which comprises the following components in parts by weight: 1 part of ceramsite, 0-0.3 part of quartz sand, 0-0.3 part of cement, 0.05-0.1 part of epoxy resin, 0.025-0.05 part of curing agent and 0-0.3 part of water.
Ceramsite, quartz sand, epoxy resin, a curing agent, cement and water are selected as components, wherein the ceramsite is used as a coarse aggregate, and is mainly used for providing a supporting framework of the material and assisting in adjusting the water permeability and the pressure resistance of the material; the epoxy resin and the curing agent are used as main cementing agents to mainly adjust the permeability of the material and assist in adjusting the compressive strength of the material, and the cement slurry is used as an auxiliary cementing agent to mainly adjust the compressive strength of the material under the condition of high requirement on the compressive strength of the permeable filling material. The quartz sand is fine aggregate, assists in adjusting the compressive strength and the permeability of the material, and is used as a heat absorbent for epoxy resin curing reaction to absorb heat emitted in the epoxy curing process, so that the temperature of a reaction system is reduced, the reaction speed is slowed down, the thermal stress is reduced, and the curing shrinkage is reduced.
In some embodiments, the epoxy resin-based water permeable filling material is composed of the following components in parts by weight: 1 part of ceramsite, 0-0.3 part of quartz sand, 0.05-0.1 part of epoxy resin, 0.025-0.05 part of curing agent and 0-0.3 part of water.
Further, the epoxy resin-based permeable filling material comprises the following components in parts by weight: 1 part of ceramsite, 0-0.3 part of quartz sand, 0.05-0.1 part of epoxy resin and 0.025-0.05 part of curing agent.
Further, the epoxy resin is epoxy resin E51. The curing agent is an epoxy resin E51 matched curing agent.
Furthermore, the mass ratio of the epoxy resin E51 to the curing agent is 2: 1. The mass ratio is the highest in the bond strength.
Furthermore, the ceramsite is light solid ceramsite.
Furthermore, the grain diameter of the ceramsite is 2-6 mm.
Further, the cement is ordinary portland cement with grade p.o42.5.
Furthermore, the particle size of the quartz sand is less than 0.5 mm.
In a second aspect, the invention provides a preparation method of the epoxy resin-based permeable filling material, which comprises the following steps:
mixing the ceramsite with epoxy resin, quartz sand and a curing agent in sequence to obtain a mixed material;
mixing cement and water to form cement paste;
and adding the cement paste into the mixed material, and uniformly mixing to obtain the cement paste.
The ceramsite has larger grain diameter and more usage amount, and when the components are directly mixed, the ceramsite is difficult to be fully fused with the epoxy resin under the blocking action of quartz sand, so that part of the ceramsite is difficult to have enough bonding strength, and the quality of the permeable filling material is further seriously influenced.
When the epoxy resin-based permeable filling material is mixed according to the method, the ceramsite is firstly mixed with the epoxy resin, so that the epoxy resin can be uniformly coated on the ceramsite, then the ceramsite is uniformly mixed with the quartz sand, so that solid phases in the filling material can be fully contacted with the epoxy resin, and finally the ceramsite is mixed with the curing agent, so that the surfaces of the ceramsite and the quartz sand are more easily and uniformly coated with the curing agent, further, the full contact between the solid phases and the cementing agent is ensured, the prepared epoxy resin-based permeable filling material is uniform in texture, the cementing agent is fully fused with the ceramsite, and the bonding strength is high.
In a third aspect, the invention provides application of the epoxy resin-based permeable filling material in permeable filling of a karst cave or a goaf in a karst development stratum of a spring area.
The beneficial effects of the invention are as follows:
1. the material introduces light solid ceramsite as aggregate, and still has high permeability under the condition of realizing that the material has high uniaxial compressive strength.
2. Epoxy resin is introduced into the material as a cementing agent, the uniaxial compressive strength and permeability of the material are adjusted by adjusting the content of the epoxy resin in the material, and the material still has high permeability under the condition of realizing high strength.
3. The main parameters of the material, namely the uniaxial compressive strength and the permeability coefficient, have large adjustable ranges, the variation range of the uniaxial compressive strength is 0.5-12MPa, and the variation range of the permeability coefficient is 0.1-8cm/s, so that the material can meet the filling treatment requirements of different strength and water passing performance requirements.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Example 1
Preparing an epoxy resin-based permeable filling material:
the raw materials comprise: 1 part of ceramsite, 0 part of quartz sand, 0 part of cement, 0.05 part of epoxy resin, 0.025 part of epoxy resin E51 matched curing agent and 0 part of water.
The preparation method comprises the following steps:
1) weighing ceramsite with each grain size according to a collection ratio, and uniformly stirring;
2) weighing epoxy resin, adding the ceramsite obtained in the step 1), and uniformly stirring to ensure that the epoxy resin is uniformly coated on the surface of the ceramsite;
3) weighing the curing agent, and uniformly stirring to obtain the curing agent.
The prepared epoxy resin-based permeable filling material has the following relevant parameters: density 1.05g/cm3The uniaxial compressive strength is 0.52MPa, and the permeability coefficient is 7.93 cm/s.
Example 2
Preparing an epoxy resin-based permeable filling material:
the raw materials comprise: 1 part of ceramsite, 0 part of quartz sand, 0 part of cement, 0.1 part of epoxy resin, 0.05 part of epoxy resin E51 matched curing agent and 0 part of water.
The preparation method comprises the following steps:
1) weighing ceramsite with each grain size according to a collection ratio, and uniformly stirring;
2) weighing epoxy resin, adding the ceramsite obtained in the step 1), and uniformly stirring to ensure that the epoxy resin is uniformly coated on the surface of the ceramsite;
3) weighing the curing agent, and uniformly stirring to obtain the curing agent.
The prepared epoxy resin-based permeable filling material has the following relevant parameters: density 1.112g/cm3The uniaxial compressive strength is 5.39MPa, and the permeability coefficient is 6.41 cm/s.
Example 3
Preparing an epoxy resin-based permeable filling material:
the raw materials comprise: 1 part of ceramsite, 0.2 part of quartz sand, 0 part of cement, 0.06 part of epoxy resin, 0.03 part of epoxy resin E51 matched curing agent and 0 part of water.
The preparation method comprises the following steps:
1) weighing ceramsite with each grain size according to a collection ratio, and uniformly stirring;
2) weighing epoxy resin, adding the ceramsite obtained in the step 1), and uniformly stirring to ensure that the epoxy resin is uniformly coated on the surface of the ceramsite;
3) weighing quartz sand, adding the ceramsite obtained in the step 2), and uniformly stirring;
4) weighing the curing agent, and uniformly stirring to obtain the curing agent.
The prepared epoxy resin-based permeable filling material has the following relevant parameters: density 1.117g/cm3The uniaxial compressive strength is 4.66MPa, and the permeability coefficient is 6.03 cm/s.
Example 4
Preparing an epoxy resin-based permeable filling material:
the raw materials comprise: 1 part of ceramsite, 0.2 part of quartz sand, 0.1 part of cement, 0.04 part of epoxy resin, 0.02 part of epoxy resin E51 matched curing agent and 0.1 part of water.
The preparation method comprises the following steps:
1) weighing ceramsite with each grain size according to a collection ratio, and uniformly stirring;
2) weighing epoxy resin, adding the ceramsite obtained in the step 1), and uniformly stirring to ensure that the epoxy resin is uniformly coated on the surface of the ceramsite;
3) weighing quartz sand, adding the ceramsite obtained in the step 2), and uniformly stirring;
4) weighing the curing agent and uniformly stirring;
5) weighing cement and water, and independently and uniformly stirring to form cement paste;
6) adding the cement slurry obtained in the step 5) into the mixed material obtained in the step 4), and uniformly stirring to obtain the cement slurry.
The relevant parameters of the mixture ratio are as follows: density 1.238g/cm3The uniaxial compressive strength is 4.24MPa, and the permeability coefficient is 1.32 cm/s.
Comparative example 1
The difference from the example 2 lies in: 0.1 part of epoxy resin, 0.02 part of curing agent matched with the epoxy resin E51, and the rest are the same as the embodiment 2.
The prepared epoxy resin-based permeable filling material has the following relevant parameters: density 1.105g/cm3The uniaxial compressive strength is 1.38MPa, and the permeability coefficient is 7.41 cm/s.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An epoxy resin-based permeable filling material is characterized in that: the composition comprises the following components in parts by weight: 1 part of ceramsite, 0-0.3 part of quartz sand, 0-0.3 part of cement, 0.05-0.1 part of epoxy resin, 0.025-0.05 part of curing agent and 0-0.3 part of water.
2. The epoxy resin-based permeable filling material according to claim 1, wherein: the composition comprises the following components in parts by weight: 1 part of ceramsite, 0-0.3 part of quartz sand, 0.05-0.1 part of epoxy resin, 0.025-0.05 part of curing agent and 0-0.3 part of water.
3. The epoxy resin-based permeable filling material according to claim 2, wherein: the composition comprises the following components in parts by weight: 1 part of ceramsite, 0-0.3 part of quartz sand, 0.05-0.1 part of epoxy resin and 0.025-0.05 part of curing agent.
4. The epoxy resin-based water-permeable filling material according to any one of claims 1 to 3, wherein: the epoxy resin is epoxy resin E51.
5. The epoxy resin-based permeable filling material according to claim 4, wherein: the mass ratio of the epoxy resin E51 to the curing agent is 2: 1.
6. The epoxy resin-based water-permeable filling material according to any one of claims 1 to 3, wherein: the ceramsite is light solid ceramsite.
7. The epoxy resin-based permeable filling material according to claim 6, wherein: the grain diameter of the ceramsite is 2-6 mm.
8. The epoxy resin-based water-permeable filling material according to any one of claims 1 to 3, wherein: the cement is ordinary portland cement.
Furthermore, the particle size of the quartz sand is less than 0.5 mm.
9. The method for preparing the epoxy resin-based permeable filling material of any one of claims 1 to 8, wherein: the method comprises the following steps:
mixing the ceramsite with epoxy resin, quartz sand and a curing agent in sequence to obtain a mixed material;
mixing cement and water to form cement paste;
and adding the cement paste into the mixed material, and uniformly mixing to obtain the cement paste.
10. Use of the epoxy resin based water permeable packing material of any one of claims 1 to 8 in water permeable packing of caverns or goafs in a karst developing formation of a spring zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111474302.9A CN114315263A (en) | 2021-12-03 | 2021-12-03 | Epoxy resin-based permeable filling material and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111474302.9A CN114315263A (en) | 2021-12-03 | 2021-12-03 | Epoxy resin-based permeable filling material and preparation method and application thereof |
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| CN114315263A true CN114315263A (en) | 2022-04-12 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160111076A1 (en) * | 2014-07-22 | 2016-04-21 | Sichuan Zisen Acoustics Technical Co., Ltd. | Particulate Sound Absorption Board and Preparation Method Thereof |
| CN111943613A (en) * | 2020-08-15 | 2020-11-17 | 中德新亚建筑材料有限公司 | Low-toxicity epoxy resin grouting material for building and preparation method thereof |
| CN112142368A (en) * | 2020-10-22 | 2020-12-29 | 中国海洋石油集团有限公司 | Low-temperature consolidation type material for offshore oilfield water injection well |
-
2021
- 2021-12-03 CN CN202111474302.9A patent/CN114315263A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160111076A1 (en) * | 2014-07-22 | 2016-04-21 | Sichuan Zisen Acoustics Technical Co., Ltd. | Particulate Sound Absorption Board and Preparation Method Thereof |
| CN111943613A (en) * | 2020-08-15 | 2020-11-17 | 中德新亚建筑材料有限公司 | Low-toxicity epoxy resin grouting material for building and preparation method thereof |
| CN112142368A (en) * | 2020-10-22 | 2020-12-29 | 中国海洋石油集团有限公司 | Low-temperature consolidation type material for offshore oilfield water injection well |
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Application publication date: 20220412 |
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