CN103171182A - Light powder geosynthetic clay liner - Google Patents
Light powder geosynthetic clay liner Download PDFInfo
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- CN103171182A CN103171182A CN2013100589948A CN201310058994A CN103171182A CN 103171182 A CN103171182 A CN 103171182A CN 2013100589948 A CN2013100589948 A CN 2013100589948A CN 201310058994 A CN201310058994 A CN 201310058994A CN 103171182 A CN103171182 A CN 103171182A
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- bentonite
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- water uptake
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Abstract
The invention relates to a light powder geosynthetic clay liner. The geosynthetic clay liner comprises a face cloth and a bottom cloth, wherein a geosynthetic compound high water absorbing material is arranged between the face cloth and the bottom cloth; and the geosynthetic compound high water absorbing material has the following indexes: the granularity is 80 meshes, the passing rate is more than 90%, the expansion index is greater than or equal to 40mL/2g, the durability is greater than or equal to 20mL/2g, the filter loss is less than or equal to 15mL, and the unit area quality is 2000g/m2. Compared with the common geosynthetic clay liner, the manufactured geosynthetic clay liner provided by the invention can rapidly expand when encountering water in use, the water absorption rate is high, the water absorbing capacity is large, the light powder geosynthetic clay liner has the good water-proofing and seepage-proofing properties, the unit area quality is reduced, the construction is convenient, and the transportation is also convenient.
Description
Technical field
Patent of the present invention relates to a kind of building water-proof material, particularly a kind of lightweight powdery GCL for building, civil engineering.
Background technology
GCL is a kind of novel geosynthetics.Common GCL be through special technology and equipment with the bentonite clay particle layer evenly, be securely fixed between nonwoven layer and base fabric and make, its bottom is woven cloth, the upper strata is nonwoven.And have good self-healing performance and freezing and thawing performance.This waterproof material is widely used, and can be used for the underground waterproofs such as subway, hydraulic engineering, water feature design engineering, refuse landfill, civil buildings, antiseepage field.
Sodium bentonite has dilatancy preferably; good dispersion in aqueous medium; when contacting with water; become the gelinite of 10～20 times of original particle volume, under the effect that is subject to from substrate, protective layer and waterproof blanket internal fiber pulling force, intert between molecule and arrange; internal voids dwindles; form fine and close gel structure layer, hydrone can't see through, thereby plays the waterproof, seepage control effect.Make GCL reach the requirement of waterproof, seepage control, necessarily require in GCL bentonitic mass area ratio at 4500g/m
2Above, GCL just has lower infiltration coefficient, reaches the waterproof, seepage control effect.Because the mass area ratio of common GCL is larger, can cause the increase of cost of transportation like this, make troubles to construction, especially in the construction of Facade design.
Summary of the invention
Common GCL mass area ratio is large in order to solve, the inconvenient problem of transporting, construct, a kind of new thinking is proposed, be characterized in the bentonite clay particle of common GCL is replaced with bentonite composite high-water uptake material powder, a kind of lightweight powdery GCL is provided.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of lightweight powdery GCL, comprise face cloth and base fabric, be provided with the bentonite composite high-water uptake material between described cloth and base fabric, the index of described bentonite composite high-water uptake material is as follows: granularity is that 80 order percent of pass are more than 99%, expansion index 〉=40mL/2g, durability 〉=20mL/2g, filter loss≤15mL, mass area ratio is 2000g/m
2
Further, preferred version of the present invention is: the infiltration coefficient of described waterproof blanket≤5 * 10
-12M/s, thickness≤2cm.
Further, preferred version of the present invention is: described bentonite composite high-water uptake material fixedly secures between face cloth and base fabric by needling process.
Further, preferred version of the present invention is: described cloth is nonwoven.
Further, preferred version of the present invention is: described base fabric is woven cloth.
Further, preferred version of the present invention is: described bentonite composite high-water uptake material powder, according to the weight portion meter, comprise sodium bentonite 8-12 part, 40% acrylamide aqueous solution 8-12 part, N, N-methylene-bisacrylamide 0.001-0.003 part, ammonium persulfate 0.03-0.08 part, NaOH 0.3-0.8 part, sodium thiosulfate 0.1-0.2 part.
Further, described sodium bentonite is the high-purity natural sodium bentonite, the preparation method of described high-purity natural sodium bentonite: with natural sodium bentonite raw ore, purifying after crossing 50～100 mesh sieves after the airing fragmentation makes smectite content higher than 80%, then is crushed to 90% through super-dry and crosses 200 mesh standard sieves and get final product.
Further, preferred version of the present invention is: the preparation method of described bentonite composite high-water uptake material powder comprises the following steps:
(1) get 200 order sodium bentonite in powders of 8-12 weight portion, add distilled water according to the part by weight of 1:2, after fully stirring;
(2) add 40% acrylamide aqueous solution of getting the 8-12 weight portion, after fully mixing, then add successively the N of 0.001-0.003 weight portion, the sodium thiosulfate of the NaOH of the ammonium persulfate of N-methylene-bisacrylamide, 0.03-0.08 weight portion, 0.3-0.8 weight portion, 0.10-0.20 weight portion is through fully mixing;
Boring at room temperature the carrying out polymerisation 15-30 minute that (3) will stir, be heated to again 40-60 ℃ and continue reaction, until obtain gelatinous polymer, the gelatinous polymer drying that obtains is pulverized made 80 orders with fine powder, namely get bentonite composite high-water uptake material powder.
Beneficial effect of the present invention:
Compare with common GCL, the main advantage of waterproof blanket of the present invention is as follows:
(1) adopting the bentonite composite high-water uptake material, when composite high-water uptake material is met water, may be expanded to 40～60 times, is 2～3 times of common bentonite inflated index, the waterproof, seepage control performance, from the more common GCL of water retention property, larger improvement is arranged.
(2) lightweight powdery GCL mass area ratio reduces greatly, is convenient to transportation, saves cost of transportation.
(3) construction of lightweight powdery GCL is convenient, can the reduction of erection time, reduce construction cost.
(4) lightweight powdery GCL mass area ratio is low, water resistance is excellent, can broaden application the field, such as roof waterproof engineering.
(5) adopting the high-purity natural sodium bentonite is raw material, and sodium bentonite is carried out montmorillonite pretreatment, has guaranteed that product can realize expanding and antiseepage in any environment.
Description of drawings
In order to be illustrated more clearly in new embodiment of the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structural representation sketch of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
As shown in Figure 1, a kind of lightweight powdery GCL, comprise face cloth and base fabric, be provided with the bentonite composite high-water uptake material between described cloth and base fabric, the index of described bentonite composite high-water uptake material is as follows: granularity is 80 order percent of pass more than 99%, expansion index 〉=40mL/2g, durability 〉=20mL/2g, filter loss≤15mL, mass area ratio is 2000g/m
2
Embodiment 1
As shown in Figure 1, a kind of lightweight powdery GCL comprises face cloth 1 and base fabric 3, between described cloth 1 and base fabric 2 by bentonite composite high-water uptake material powder is firmly arranged by needling process.Face cloth 1 used is for being nonwoven, and base fabric 3 used is woven cloth.
The preparation method of described bentonite composite high-water uptake material powder comprises the following steps:
(1) get 200 order sodium bentonite in powders of 10 weight portions, add distilled water according to the part by weight of 1:2, after fully stirring;
(2) add 40% acrylamide aqueous solution of getting 10 weight portions, after fully mixing, then add successively the N of 0.002 weight portion, the sodium thiosulfate of the NaOH of the ammonium persulfate of N-methylene-bisacrylamide, 0.05 weight portion, 0.5 weight portion, 0.15 weight portion is through fully mixing;
Boring at room temperature the carrying out polymerisation 15-30 minute that (3) will stir, be heated to again 40-60 ℃ and continue reaction, until obtain gelatinous polymer, the gelatinous polymer drying that obtains is pulverized made 80 order powder, namely get the bentonite composite high-water uptake material.
The index of the bentonite composite high-water uptake material that obtains is as follows: granularity is 80 order percent of pass 99.6%, expansion index 60mL/2g, durability 30mL/2g, filter loss 8mL.
The infiltration coefficient 3 * 10 of the waterproof blanket that obtains
-12M/s, thickness 2cm, mass area ratio is 2000g/m
2
This lightweight GCL construction technology is the same with common GCL; at first basal plane is processed smooth, cleaning; open fire and ponding, obvious stone sharp object etc. must not be arranged; then directly lay; adopt the nature splicing processes, the bentonite sealing powder need spread in lap-joint, and fixes in overlapping the slot place; construct complete after, the above need carry out the protective layer compacting.
As shown in Figure 1, a kind of lightweight powdery GCL comprises face cloth 1 and base fabric 3, the bentonite composite high-water uptake material powder by firmly having by needling process between described cloth 1 and base fabric 2.Face cloth 1 used is for being nonwoven, and base fabric 3 used is woven cloth.
The preparation method of described bentonite composite high-water uptake material powder comprises the following steps:
(1) get 200 height of eye pure natural sodium bentonites of 8 weight portions, part by weight according to 1:2 adds distilled water, after fully stirring, the preparation method of described high-purity natural sodium bentonite: with natural sodium bentonite raw ore, purifying after crossing 50～100 mesh sieves after the airing fragmentation makes smectite content higher than 80%, then is crushed to 90% through super-dry and crosses 200 mesh standard sieves and get final product;
(2) add 40% acrylamide aqueous solution of getting 8 weight portions, after fully mixing, then add successively the N of 0.001 weight portion, the sodium thiosulfate of the NaOH of the ammonium persulfate of N-methylene-bisacrylamide, 0.03 weight portion, 0.3 weight portion, 0.1 weight portion is through fully mixing;
Boring at room temperature the carrying out polymerisation 15-30 minute that (3) will stir, be heated to again 40-60 ℃ and continue reaction, until obtain gelatinous polymer, the gelatinous polymer drying that obtains is pulverized made 80 order powder, namely get the bentonite composite high-water uptake material.
The index of the bentonite composite high-water uptake material that obtains is as follows: granularity is 80 order percent of pass 99.5%, expansion index 62mL/2g, durability 40mL/2g, filter loss 10mL.
The infiltration coefficient 4 * 10 of the waterproof blanket that obtains
-12M/s, thickness 1.5cm, mass area ratio is 2020g/m
2
This lightweight GCL construction technology is the same with common GCL; at first basal plane is processed smooth, cleaning; open fire and ponding, obvious stone sharp object etc. must not be arranged; then directly lay; adopt the nature splicing processes, the bentonite sealing powder need spread in lap-joint, and fixes in overlapping the slot place; construct complete after, the above need carry out the protective layer compacting.
Embodiment 3
As shown in Figure 1, a kind of lightweight powdery GCL comprises face cloth 1 and base fabric 3, between described cloth 1 and base fabric 2 by bentonite composite high-water uptake material powder is firmly arranged by needling process.Face cloth 1 used is for being nonwoven, and base fabric 3 used is woven cloth.
The preparation method of described bentonite composite high-water uptake material powder comprises the following steps:
(1) get 200 height of eye pure natural sodium bentonites of 12 weight portions, part by weight according to 1:2 adds distilled water, after fully stirring, the preparation method of described high-purity natural sodium bentonite: with natural sodium bentonite raw ore, purifying after crossing 50～100 mesh sieves after the airing fragmentation makes smectite content higher than 80%, then is crushed to 90% through super-dry and crosses 200 mesh standard sieves and get final product;
(2) add 40% acrylamide aqueous solution of getting 12 weight portions, after fully mixing, then add successively the N of 0.003 weight portion, the sodium thiosulfate of the NaOH of the ammonium persulfate of N-methylene-bisacrylamide, 0.08 weight portion, 0.8 weight portion, 0.2 weight portion is through fully mixing;
Boring at room temperature the carrying out polymerisation 15-30 minute that (3) will stir, be heated to again 40-60 ℃ and continue reaction, until obtain gelatinous polymer, the gelatinous polymer drying that obtains is pulverized made 80 order powder, namely get the bentonite composite high-water uptake material.
The index of the bentonite composite high-water uptake material that obtains is as follows: granularity is 80 order percent of pass 99.5%, expansion index 58mL/2g, durability 38mL/2g, filter loss 8mL.
The infiltration coefficient 3.6 * 10 of the waterproof blanket that obtains
-12M/s, thickness 1.0cm, mass area ratio is 2015g/m
2
This lightweight GCL construction technology is the same with common GCL; at first basal plane is processed smooth, cleaning; open fire and ponding, obvious stone sharp object etc. must not be arranged; then directly lay; adopt the nature splicing processes, the bentonite sealing powder need spread in lap-joint, and fixes in overlapping the slot place; construct complete after, the above need carry out the protective layer compacting.
The above is only preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. lightweight powdery GCL, comprise face cloth and base fabric, it is characterized in that: be provided with bentonite composite high-water uptake material powder between described cloth and base fabric, the index of described bentonite composite high-water uptake material powder is as follows: granularity is that 80 order percent of pass are more than 99%, expansion index 〉=40mL/2g, durability 〉=20mL/2g, filter loss≤15mL, mass area ratio is 2000g/m
2
2. a kind of lightweight powdery GCL according to claim 1, is characterized in that: the infiltration coefficient of described waterproof blanket≤5 * 10
-12M/s, thickness≤2cm.
3. a kind of lightweight powdery GCL according to claim 1, it is characterized in that: described bentonite composite high-water uptake material powder fixedly secures between face cloth and base fabric by needling process.
4. a kind of lightweight powdery GCL according to claim 1, it is characterized in that: described cloth is nonwoven, described base fabric is woven cloth.
5. the described a kind of lightweight powdery GCL of according to claim 1 ~ 4 any one, it is characterized in that: described bentonite composite high-water uptake material powder, according to the weight portion meter, comprise sodium bentonite 8-12 part, 40% acrylamide aqueous solution 8-12 part, N, N-methylene-bisacrylamide 0.001-0.003 part, ammonium persulfate 0.03-0.08 part, NaOH 0.3-0.8 part, sodium thiosulfate 0.1-0.2 part.
6. a kind of lightweight powdery GCL according to claim 5, it is characterized in that: described sodium bentonite is the high-purity natural sodium bentonite, the preparation method of described high-purity natural sodium bentonite: with natural sodium bentonite raw ore, purifying after crossing 50～100 mesh sieves after the airing fragmentation makes smectite content higher than 80%, then is crushed to 90% through super-dry and crosses 200 mesh standard sieves and get final product.
7. a kind of lightweight powdery GCL according to claim 5, it is characterized in that: the preparation method of described bentonite composite high-water uptake material powder comprises the following steps:
(1) get 200 order sodium bentonite in powders of 8-12 weight portion, add distilled water according to the part by weight of 1:2, after fully stirring;
(2) add 40% acrylamide aqueous solution of getting the 8-12 weight portion, after fully mixing, then add successively the N of 0.001-0.003 weight portion, the sodium thiosulfate of the NaOH of the ammonium persulfate of N-methylene-bisacrylamide, 0.03-0.08 weight portion, 0.3-0.8 weight portion, 0.10-0.20 weight portion is through fully mixing;
Boring at room temperature the carrying out polymerisation 15-30 minute that (3) will stir, be heated to again 40-60 ℃ and continue reaction, until obtain gelatinous polymer, the gelatinous polymer drying that obtains is pulverized made 80 order powder, namely get the bentonite composite high-water uptake material.
8. a kind of lightweight powdery GCL according to claim 7, it is characterized in that: described sodium bentonite is the high-purity natural sodium bentonite, the preparation method of described high-purity natural sodium bentonite: with natural sodium bentonite raw ore, purifying after crossing 50～100 mesh sieves after the airing fragmentation makes smectite content higher than 80%, then is crushed to 90% through super-dry and crosses 200 mesh standard sieves and get final product.
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| CN201310058994.8A CN103171182B (en) | 2013-02-25 | 2013-02-25 | Light powder geosynthetic clay liner |
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| CN201310058994.8A CN103171182B (en) | 2013-02-25 | 2013-02-25 | Light powder geosynthetic clay liner |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108755778A (en) * | 2018-05-25 | 2018-11-06 | 句容康泰膨润土有限公司 | A kind of sodium-based bentonite waterproof carpet and its construction method |
| CN108976686A (en) * | 2018-07-03 | 2018-12-11 | 辽宁本特耐科技发展有限公司 | A kind of composite hydrogel, waterproof roll liner and preparation method thereof and its application |
| CN109263171A (en) * | 2018-09-21 | 2019-01-25 | 佛山市禅城区诺高环保科技有限公司 | A kind of preparation method of bentonite water-proofing coiled material |
| CN109849443A (en) * | 2019-02-25 | 2019-06-07 | 刘小红 | A kind of waterproof blanket and preparation method thereof of bentonite ethanol system pre-treatment |
| CN110357558A (en) * | 2019-07-18 | 2019-10-22 | 深圳工建科技有限公司 | A kind of ceramic tile bond and preparation method thereof |
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| US6537676B1 (en) * | 1992-08-26 | 2003-03-25 | Rawell Group Holdings Limited | Waterproofing material and method of fabrication therefor |
| CN101514559A (en) * | 2009-03-20 | 2009-08-26 | 捷高科技（苏州）有限公司 | Bentonite waterproof carpet and manufacturing method thereof |
| CN102922813A (en) * | 2012-11-27 | 2013-02-13 | 中国非金属矿工业有限公司 | Prehydration-type geosynthetic clay liner and preparation method thereof |
-
2013
- 2013-02-25 CN CN201310058994.8A patent/CN103171182B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6537676B1 (en) * | 1992-08-26 | 2003-03-25 | Rawell Group Holdings Limited | Waterproofing material and method of fabrication therefor |
| CN101514559A (en) * | 2009-03-20 | 2009-08-26 | 捷高科技（苏州）有限公司 | Bentonite waterproof carpet and manufacturing method thereof |
| CN102922813A (en) * | 2012-11-27 | 2013-02-13 | 中国非金属矿工业有限公司 | Prehydration-type geosynthetic clay liner and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108755778A (en) * | 2018-05-25 | 2018-11-06 | 句容康泰膨润土有限公司 | A kind of sodium-based bentonite waterproof carpet and its construction method |
| CN108976686A (en) * | 2018-07-03 | 2018-12-11 | 辽宁本特耐科技发展有限公司 | A kind of composite hydrogel, waterproof roll liner and preparation method thereof and its application |
| CN109263171A (en) * | 2018-09-21 | 2019-01-25 | 佛山市禅城区诺高环保科技有限公司 | A kind of preparation method of bentonite water-proofing coiled material |
| CN109849443A (en) * | 2019-02-25 | 2019-06-07 | 刘小红 | A kind of waterproof blanket and preparation method thereof of bentonite ethanol system pre-treatment |
| CN110357558A (en) * | 2019-07-18 | 2019-10-22 | 深圳工建科技有限公司 | A kind of ceramic tile bond and preparation method thereof |
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| CN103171182B (en) | 2015-01-14 |
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Effective date of registration: 20220216 Address after: No.11, Beishuncheng street, Xizhimen, Xicheng District, Beijing Patentee after: CHINA NATIONAL NONMETALLIC MINERALS INDUSTRIAL Corp. Address before: 100000 floor 17, block 4, Yuhui building, building 37, No. 73 Fucheng Road, Haidian District, Beijing Patentee before: BEIJING BOKE BUILDING CHEMICAL MATERIAL Co.,Ltd. |