CN111976229A - Quick-setting concrete prefabricated hollow composite board and application method thereof in flood fighting and emergency rescue - Google Patents
Quick-setting concrete prefabricated hollow composite board and application method thereof in flood fighting and emergency rescue Download PDFInfo
- Publication number
- CN111976229A CN111976229A CN202010907488.1A CN202010907488A CN111976229A CN 111976229 A CN111976229 A CN 111976229A CN 202010907488 A CN202010907488 A CN 202010907488A CN 111976229 A CN111976229 A CN 111976229A
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- layer
- concrete
- hollow composite
- sodium silicate
- composite board
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/06—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
- E02B3/106—Temporary dykes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a rapid-hardening concrete prefabricated hollow composite board and an application method thereof in flood fighting and emergency rescue. The sodium silicate layer and the calcium oxide layer enable concrete to be rapidly solidified in the steel bar framework layer, so that the concrete is enabled to be solidified and formed in a few minutes under a water environment, a certain strength is achieved, a firm concrete protective layer is formed on the water surface of the dam, extrusion and scouring of flood to the dam are resisted, collapse and collapse of the dam are prevented, a traditional flood fighting mode is changed, the dam is reinforced under the water environment more safely and efficiently, water pollution is avoided, and life and property safety of people is protected.
Description
Technical Field
The invention belongs to a novel practical material, and particularly relates to a rapid-hardening concrete prefabricated hollow composite board and an application method thereof in flood fighting and emergency rescue.
Background
Along with global warming, glaciers melt rapidly, flood disasters often occur in the middle and lower reaches of the Yangtze river of China, and huge losses are brought to the life and property safety of people. At present, the traditional mode of water and soil covering is still adopted in flood fighting, and people adopt sand bags, grass bags and wooden piles to block flood. People must cooperate with water in gear or heavy equipment such as vehicles is thrown into water to prevent flood impact. Although the traditional method plays a role in blocking flood, the traditional method always feels half the result and cannot be permanently fixed. And the construction difficulty is large, the danger is strong, and the firmness of the dam is not optimistic.
Disclosure of Invention
The invention aims to provide a rapid-hardening concrete prefabricated hollow composite board and an application method thereof in flood fighting and emergency rescue.
The technical scheme adopted by the invention is as follows: the quick-setting concrete prefabricated hollow composite board is composed of a water-resistant degradation paper layer, a sodium silicate layer, a calcium oxide layer and a steel bar framework layer, wherein the steel bar framework layer is located in the center of the center, the calcium oxide layer wraps the periphery of the steel bar framework layer, the sodium silicate layer wraps the periphery of the calcium oxide layer, and the water-resistant degradation paper layer wraps the periphery of the sodium silicate layer.
The steel bar framework layer is a three-dimensional framework composed of steel bars and iron wires.
The sodium silicate layer is an instant sodium silicate layer.
The thickness of the steel bar framework layer is 15-40 cm.
The sodium silicate layer is an instant sodium silicate layer.
The thickness of the sodium silicate layer is 0.3-3 cm.
The thickness of the calcium oxide layer is 0.3-3 cm.
The invention discloses a quick-setting concrete prefabricated hollow composite board and an application method thereof in flood fighting and emergency rescue, comprising the following steps:
1) inserting a plurality of steel pipes into the water inclined plane at equal intervals along the dam;
2) sleeving a steel bar framework layer of the rapid-hardening concrete prefabricated hollow composite plate into the steel pipe;
3) controlling the rapid-hardening concrete prefabricated hollow composite board by using a hoisting device, and pumping concrete into the rapid-hardening concrete prefabricated hollow composite board before entering water;
4) after several minutes, the concrete composite board is sunk to the water bottom along the steel pipe;
5) repeating the steps 2) to 4) to increase the height of the concrete protective layer;
6) repeating the steps 1) to 4) to increase the width of the concrete protective layer.
The waterproof paper is used for ensuring enough construction time; the N value of the sodium silicate layer is determined by the heat emitted by the reaction of the moisture of the concrete and the calcium oxide layer, and the sodium silicate layer is kept in a solid state at normal temperature. The concrete is heated and then melted into a gel substance, the gel substance enables the concrete pumped into the hollow steel bar framework layer to be quickly solidified within a few minutes, a certain strength is achieved after 15 minutes, the strength is gradually increased along with the time, and finally the bending resistance is 10 MPa and the compression resistance is more than 60 MPa; the calcium oxide layer is mainly used for reacting with the moisture of the concrete to dissipate heat so as to dissolve the sodium silicate layer; the hollow steel bar framework layer is provided with steel bars which are uniformly distributed to support two surfaces of the sodium silicate composite board, so that a space for pumping concrete is reserved, and the stress strength of the formed concrete slab is increased.
The invention reasonably utilizes the chemical principles that water and calcium oxide react to release heat, sodium silicate is heated and dissolved into gel-like sodium silicate to react with calcium aluminate in concrete, so that the concrete is rapidly solidified, and the like, through field construction, the concrete can be solidified and formed in a few minutes under a water environment, a certain strength is reached, the strength is increased along with the prolonging of time, a firm concrete protective layer is formed on the water surface of the dam, the extrusion and the scouring of flood to the dam are resisted, and the collapse of the dam are prevented. The traditional flood fighting mode is changed, the dam is reinforced in the water environment more safely and efficiently, water pollution is avoided, and the life and property safety of people is protected.
Drawings
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
Fig. 1 is a structural diagram of a rapid hardening concrete prefabricated hollow composite board special for flood fighting and disaster relief.
In the figure: 1 is a steel bar framework layer, 2 is a calcium oxide layer, 3 is a sodium silicate layer, and 4 is a water-resistant degradable paper layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
The invention relates to a quick-setting concrete prefabricated hollow composite board which comprises a waterproof degradable paper layer, a sodium silicate layer, a calcium oxide layer and a steel bar framework layer, wherein the steel bar framework layer is positioned in the center, the calcium oxide layer is wrapped around the steel bar framework layer, the sodium silicate layer is wrapped around the calcium oxide layer, and the waterproof degradable paper layer is wrapped around the sodium silicate layer.
The steel bar framework layer is a three-dimensional framework consisting of steel bars and iron wires, supports two surfaces of the sodium silicate composite board, reserves a space for pumping concrete, and increases the stress strength of the formed concrete slab. The thickness of the steel reinforcement framework layer is determined according to the strength required to be reinforced, the thickness is generally controlled to be 15-40 cm, construction operation is facilitated, and the steel reinforcement framework layer generally adopts 14 mm-diameter deformed steel bars.
The foamed alkali layer is an instant foamed alkali layer, and the thickness of the foamed alkali layer is determined according to the thickness of the reinforcement framework layer and is generally 0.3-3 cm. The instant sodium silicate is prepared from Shandong Jinan first-pass chemical engineering Co., Ltd, wherein N is 3.0, and the instant sodium silicate is solid at normal temperature, or can be prepared from other companies. The gel sodium silicate substance can quickly solidify concrete pumped into the hollow steel bar framework layer within a few minutes, and after 15 minutes, the concrete reaches a certain strength, the strength gradually increases along with time, and finally the concrete reaches the bending resistance of 10 MPa and the compression resistance of more than 60 MPa.
The thickness of the calcium oxide layer is determined according to the thickness of the steel bar framework layer, and is generally 0.3-3 cm.
The water-resistant degradable paper layer is made of disposable barrier film biodegradable paper of the warp portion of common cedar seed plastic raw material of Dongguan city, the thickness of the paper layer is 1-2 mm, and degradation and melting can not be guaranteed within 3-5 minutes in a hydration environment.
The invention discloses a rapid-hardening concrete prefabricated hollow composite board and an application method thereof in flood fighting and emergency rescue, wherein the application method comprises the following steps:
1) inserting a plurality of steel pipes into the water inclined plane at equal intervals along the dam;
2) penetrating the composite plate sleeve into the steel pipe;
3) controlling the composite board by using a hoisting device, and pumping concrete into the composite board before the composite board enters water;
4) after several minutes, the concrete composite board is sunk to the water bottom along the steel pipe;
5) repeating the steps 2) to 4) to increase the height of the concrete protective layer;
6) repeating the steps 1) to 4) to increase the width of the concrete protective layer.
The water-resistant degradable paper layer ensures that construction operation under an aqueous environment is not influenced within 3-5 minutes, and a dam can be reinforced under the aqueous environment. The calcium oxide layer and the sodium silicate layer can quickly solidify and form the concrete, and reach certain flexural and compressive strength, and the strength can be gradually increased along with the time.
The concrete protective layer reaches the strength of 6 MPa and 29 MPa after 15-30 minutes, reaches the strength of 10 MPa and 60 MPa after 48 hours, and can build a firm cement concrete protective layer on the water surface of the dam to prevent the dam from collapsing and collapsing.
The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.
Claims (7)
1. The utility model provides a precast hollow composite sheet of rapid hardening concrete which characterized in that: the steel bar framework layer is located in the center, the calcium oxide layer wraps the periphery of the steel bar framework layer, the sodium silicate layer wraps the periphery of the calcium oxide layer, and the water-resistant degradation paper layer wraps the periphery of the sodium silicate layer.
2. The precast concrete hollow composite panel as recited in claim 1, wherein: the steel bar framework layer is a three-dimensional framework composed of steel bars and iron wires.
3. The precast concrete hollow composite panel as recited in claim 1, wherein: the thickness of the steel bar framework layer is 15-40 cm.
4. The precast concrete hollow composite panel as recited in claim 1, wherein: the sodium silicate layer is an instant sodium silicate layer.
5. The precast concrete hollow composite panel as recited in claim 1, wherein: the thickness of the sodium silicate layer is 0.3-3 cm.
6. The precast concrete hollow composite panel as recited in claim 1, wherein: the thickness of the calcium oxide layer is 0.3-3 cm.
7. The method for applying the rapid-hardening concrete prefabricated hollow composite board in flood fighting and emergency rescue according to any one of claims 1 to 6, comprising the following steps:
1) inserting a plurality of steel pipes into the water inclined plane at equal intervals along the dam;
2) sleeving a steel bar framework layer of the rapid-hardening concrete prefabricated hollow composite plate into the steel pipe;
3) controlling the rapid-hardening concrete prefabricated hollow composite board by using a hoisting device, and pumping concrete into the rapid-hardening concrete prefabricated hollow composite board before entering water;
4) after several minutes, the concrete composite board is sunk to the water bottom along the steel pipe;
5) repeating the steps 2) to 4) to increase the height of the concrete protective layer;
6) repeating the steps 1) to 4) to increase the width of the concrete protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010907488.1A CN111976229A (en) | 2020-09-02 | 2020-09-02 | Quick-setting concrete prefabricated hollow composite board and application method thereof in flood fighting and emergency rescue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010907488.1A CN111976229A (en) | 2020-09-02 | 2020-09-02 | Quick-setting concrete prefabricated hollow composite board and application method thereof in flood fighting and emergency rescue |
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| Publication Number | Publication Date |
|---|---|
| CN111976229A true CN111976229A (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010907488.1A Pending CN111976229A (en) | 2020-09-02 | 2020-09-02 | Quick-setting concrete prefabricated hollow composite board and application method thereof in flood fighting and emergency rescue |
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| CN (1) | CN111976229A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115538376A (en) * | 2022-05-30 | 2022-12-30 | 深圳市斯昱林建筑工程有限公司 | Dyke blocking device and method for dike breach |
-
2020
- 2020-09-02 CN CN202010907488.1A patent/CN111976229A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115538376A (en) * | 2022-05-30 | 2022-12-30 | 深圳市斯昱林建筑工程有限公司 | Dyke blocking device and method for dike breach |
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