Natural sodium bentonite waterproof blanket lap joint structure

Abstract

The utility model relates to the technical field of waterproof blanket lap joint structure discloses natural sodium base bentonite waterproof blanket lap joint structure, including two adjacent lap joint natural sodium base bentonite waterproof blanket, one natural sodium base bentonite has the flat section, and another natural sodium base bentonite has the covering section, the covering section is lap joint above the flat section, and the covering section has the lap joint interval with the flat section, and the lap joint interval is filled with dry powder layer, the end of covering section has the outside opening with the flat section, and the outside opening is communicated with the outside of lap joint interval, and the outside opening covers the daub layer, through the dry powder layer filling in the lap joint interval, can make the contact between covering section and flat section more close, effectively promotes the compactness of lap joint place, thereby successfully conquers the natural sodium base bentonite waterproof blanket, and the poor impermeability problem caused by the poor compactness after lap joint in the past, and the impermeability of lap joint part is greatly enhanced.

Description

Technical Field

[0001] This utility model patent relates to the technical field of waterproof blanket overlapping structures, specifically to the overlapping structure of natural sodium-based bentonite waterproof blankets. Background Technology

[0002] Natural sodium bentonite waterproofing blanket is a waterproofing material made by combining sodium bentonite particles with geotextile. It utilizes the water absorption and expansion and water loss and shrinkage properties of bentonite to achieve waterproofing and seepage prevention.

[0003] However, the insufficient seepage prevention performance of natural sodium bentonite waterproof blankets after overlapping has always been a problem that the industry urgently needs to solve.

[0004] In the existing technology, the overlap width of natural sodium bentonite waterproof blankets is insufficient or uneven, which will lead to uneven distribution of bentonite particles. Under the action of external force or water pressure, the bentonite particles at the overlap are easily dispersed or displaced, forming leakage channels. If the overlap is not fully compacted during the overlap process, the density at the overlap is insufficient, and water can easily seep in from the gaps, reducing the seepage prevention performance.

[0005] Furthermore, in existing technologies, the overlap of natural sodium bentonite waterproof blankets is usually a simple layering without effective sealing measures. The overlap is prone to becoming a weak point and leakage occurs. Moreover, since there is no special sealing treatment at the overlap, the entire waterproof blanket cannot form a continuous waterproof layer, and water can penetrate through the gaps, resulting in a reduction in its seepage prevention performance. Utility Model Content

[0006] The purpose of this invention is to provide an overlapping structure for natural sodium bentonite waterproof blankets, aiming to solve the problem of insufficient seepage prevention performance of natural sodium bentonite waterproof blankets after overlapping in the prior art.

[0007] This invention is implemented as follows: a natural sodium bentonite waterproof blanket overlapping structure includes two adjacent overlapping natural sodium bentonite waterproof blankets, one of which has a flat section and the other has a covering section; the covering section overlaps above the flat section, and there is an overlap gap between the covering section and the flat section, the overlap gap being filled with a dry powder layer; the end of the covering section has an outer opening between it and the flat section, the outer opening communicating with the outer side of the overlap gap, and the outer opening being covered with a putty layer.

[0008] Furthermore, the dry powder layer is made of natural sodium-based bentonite.

[0009] Furthermore, the putty layer is formed by mixing natural sodium-based bentonite with colloids.

[0010] Furthermore, the middle part of the covering section arches upwards, the inner end of the covering section is fixedly arranged, and the outer end of the covering section is suspended and wrapped by the putty layer.

[0011] Furthermore, the end of the flat section has an inner opening between it and the covering section, the inner opening is connected to the inner side of the overlap interval, and the inner opening is sealed with an adhesive block.

[0012] Furthermore, the end of the flat section is embedded in the adhesive block and is wrapped by the adhesive block.

[0013] Furthermore, the putty layer has an extension extending beyond the outer opening, and the top of the extension is arc-shaped.

[0014] Furthermore, one end of the extension abuts against the end of the covering section, and the other end of the extension abuts against the tiling section.

[0015] Furthermore, the extension portion presses against the end of the covering section and bends downward so that the end of the covering section is inclined toward the tiling section.

[0016] Furthermore, the width of the overlap interval is greater than 250mm.

[0017] Compared with the prior art, the natural sodium bentonite waterproof blanket overlapping structure provided by this utility model, through the filling of the overlapping gap with a dry powder layer, can make the contact between the covered section and the flat section tighter, effectively improving the density of the overlapping area. In this way, it is difficult for water to penetrate through the overlapping gap, successfully overcoming the problem of poor seepage prevention performance of natural sodium bentonite waterproof blankets due to poor density after overlapping, and greatly enhancing the seepage prevention ability of the overlapping area.

[0018] Furthermore, the mortar layer covering the outer opening can reliably prevent external moisture and impurities from entering the overlapping area through the outer opening, which further improves the sealing performance of the overlapping area and greatly enhances its anti-seepage function against external environmental interference. Attached Figure Description

[0019] Figure 1 This is a partial plan view of the overlapping structure of the natural sodium-based bentonite waterproof blanket provided by this utility model;

[0020] Figure 2 This is a simplified schematic diagram of the adhesive block provided by this utility model;

[0021] In the diagram: 100 Natural sodium bentonite waterproof blanket, 101 Flat section, 102 Covering section, 103 Dry powder layer, 104 Outer opening, 105 Mortar layer, 106 Inner opening, 107 Adhesive block, 108 Outer extension. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0024] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0025] Reference Figure 1-2 The image shown is a preferred embodiment of the present invention.

[0026] The natural sodium bentonite waterproofing blanket overlap structure includes two adjacent overlapping natural sodium bentonite waterproofing blankets 100, one of which has a flat section 101 and the other has a covering section 102; the covering section 102 overlaps above the flat section 101, and there is an overlap gap between the covering section 102 and the flat section 101, which is filled with a dry powder layer 103; the end of the covering section 102 has an outer opening 104 between it and the flat section 101, the outer opening 104 communicates with the outside of the overlap gap, and the outer opening 104 is covered with a putty layer 105.

[0027] The aforementioned overlap structure of the natural sodium bentonite waterproof blanket 100, through the filling of the overlap gap with the dry powder layer 103, can make the contact between the covering section 102 and the flat section 101 more compact, effectively improving the density of the overlap. In this way, water is difficult to penetrate through the overlap gap, successfully overcoming the problem of poor seepage prevention performance of the natural sodium bentonite waterproof blanket 100 in the past due to poor density after overlap, and greatly enhancing the seepage prevention ability of the overlap part.

[0028] Furthermore, the mortar layer 105 covering the outer opening 104 can reliably prevent external moisture and impurities from entering the overlapping area through the outer opening 104, which further improves the sealing performance of the overlapping area and greatly enhances its anti-seepage function against external environmental interference.

[0029] In this embodiment, the dry powder layer 103 is made of natural sodium-based bentonite.

[0030] In this way, the dry powder layer 103 has the same bentonite composition as the waterproof blanket. When it comes into contact with water, the dry powder layer 103 can quickly absorb water and expand, forming a tight whole with the flat section 101 and the covering section 102, further improving the sealing of the overlap. At the same time, the natural sodium-based bentonite has strong stability and can maintain its seepage prevention performance for a long time, extending the service life of the waterproof blanket.

[0031] In this embodiment, the putty layer 105 is formed by mixing natural sodium-based bentonite with colloid.

[0032] In this way, the water absorption and expansion properties of bentonite can be utilized, and the adhesive properties of the colloid can be used to enhance the bonding force between the end of the covering section 102 and the flat section 101, preventing water from seeping in from the outer opening 104. This combination not only ensures the sealing effect, but also improves the toughness and crack resistance of the mortar layer 105, making it better able to adapt to temperature changes and slight structural deformation, thereby reducing the risk of leakage caused by cracking of the mortar layer 105 and improving the overall seepage prevention performance of the waterproof blanket.

[0033] In this embodiment, the middle part of the covering section 102 is arched upwards, the inner end of the covering section 102 is fixedly arranged, the outer end of the covering section 102 is suspended and wrapped by the putty layer 105.

[0034] The arch in the middle of the covering section 102 can guide the direction of water flow, making it more likely to flow away from both sides of the covering section 102, reducing the accumulation of water at the joint and reducing the possibility of leakage. The inner end is fixed to ensure that the covering section 102 is firmly connected to the flat section 101, while the outer end is suspended and wrapped by the mortar layer 105, which can effectively prevent water from flowing back into the joint from the outer end. This multi-faceted approach ensures the anti-seepage effect at the joint.

[0035] In this embodiment, there is an inner opening 106 between the end of the flat section 101 and the covering section 102. The inner opening 106 communicates with the inner side of the overlap interval, and the inner opening 106 is covered with a rubber block 107.

[0036] The presence of the inner opening 106 provides a channel for the dry powder layer 103 within the overlap interval to contact the end of the flat section 101. The sealing block 107 prevents moisture from entering the overlap interval through the inner opening 106, and the block 107 itself also plays a certain sealing role. This structure allows the dry powder layer 103 to better exert its water absorption and expansion characteristics, enhances the bonding force between the overlap and the flat section 101, improves the anti-seepage effect, and avoids leakage problems caused by the inner opening 106 not being sealed.

[0037] In this embodiment, the end of the flat section 101 is embedded in the adhesive block 107 and is wrapped by the adhesive block 107.

[0038] In this way, not only is the relative position of the flat section 101 and the covering section 102 fixed, but a local sealed area is also formed to prevent moisture from seeping in from the gap between the end of the flat section 101 and the covering section 102, thereby strengthening the tightness of the connection between the flat section 101 and the adhesive block 107, and between the flat section 101 and the covering section 102.

[0039] In this embodiment, the putty layer 105 has an extension 108 extending beyond the outer opening 104, and the top of the extension 108 is arc-shaped.

[0040] The curved top design helps guide water flow along the curved surface, reducing the impact of water flow on the sealant layer 105 and the overlap. It also prevents water from accumulating on the top of the sealant layer 105, reducing the risk of leakage and further improving the overall seepage prevention performance of the waterproof blanket.

[0041] In this embodiment, one end of the extension portion 108 presses against the end of the covering section 102, and the other end of the extension portion 108 presses against the tiling section 101.

[0042] The pressing action at both ends of the extension 108 ensures a tight bond between the covering section 102 and the flat section 101, eliminating gaps between them and preventing moisture from seeping through. Furthermore, it increases the friction between the covering section 102 and the flat section 101, improving the stability of the overlapping structure and making it less prone to displacement when subjected to external forces, thereby ensuring the long-term effectiveness of the seepage prevention performance.

[0043] In this embodiment, the extension 108 presses against the end of the covering section 102 and bends downward so that the end of the covering section 102 is inclined toward the tiling section 101.

[0044] This makes the contact between the covering section 102 and the flat section 101 closer, further reducing the gap between them, enhancing the sealing of the overlap, and also guiding the water flow towards the flat section 101 to prevent moisture from accumulating at the end of the covering section 102.

[0045] In this embodiment, the width of the overlap interval is greater than 250mm.

[0046] The wider overlap provides sufficient space for the dry powder layer 103, allowing it to fully fill and utilize its water absorption and expansion properties, thereby enhancing the density and impermeability of the overlap. At the same time, the wide overlap can also accommodate more bentonite that expands in volume due to water absorption, preventing the bentonite from overflowing from the overlap after expansion, thus ensuring the integrity and stability of the entire overlap area.

[0047] In the above embodiments, the bentonite component of the natural sodium-based bentonite waterproof blanket must be strictly selected from natural sodium-based bentonite, and artificial sodium-modified bentonite must never be used as a substitute. Specifically, the following analysis is provided:

[0048] Since the main mineral component of natural sodium-based bentonite is montmorillonite, the sodium ions between its layers are naturally and stably fixed in the crystal structure over a long geological period. These naturally occurring hydrated sodium ions are the core factors that give montmorillonite its key properties such as swelling and gelling.

[0049] In contrast, artificial sodium-modified bentonite is forcibly sodium-modified by adding soda ash. This method results in sodium ions that do not bind firmly into the montmorillonite interlayer. Many sodium ions remain only on the surface of the bentonite particles and do not actually penetrate into the interlayer structure. At the same time, calcium ions that are replaced by soda ash during artificial sodium-modification remain in the bentonite as calcium hydroxide, and this calcium hydroxide has a certain degree of activity.

[0050] In actual use environments, when carbon dioxide is present or the pH value is below 7.8, these calcium ions carrying a large amount of charge will gradually become active. They will slowly re-enter the montmorillonite interlayer and replace the originally unstable sodium ions. In this way, the sodium treatment will fail, and the bentonite will turn back into calcium-based bentonite.

[0051] Calcium-based bentonite has a relatively weak expansion capacity, with its expansion coefficient typically only about 3 to 5 times its own volume. In contrast, natural sodium-based bentonite can have an expansion coefficient of about 13 to 15 times its own volume when it expands. This means that once the sodium-based properties of bentonite fail and it reverts to calcium-based bentonite, its expansion and colloidal properties will decrease significantly. This reduction in properties will directly lead to the gradual loss of the waterproofing performance of the waterproof blanket, which may eventually cause serious quality problems such as leakage.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A natural sodium-based bentonite waterproof blanket overlapping structure, characterized in that, The device comprises two adjacent overlapping natural sodium bentonite waterproofing blankets, one of which has a flat section and the other has a covering section; the covering section overlaps the flat section, and there is an overlap gap between the covering section and the flat section, the overlap gap being filled with a dry powder layer; the end of the covering section has an outer opening between it and the flat section, the outer opening communicating with the outer side of the overlap gap, and the outer opening being covered with a putty layer.

2. The overlap structure of the natural sodium-based bentonite waterproof blanket as described in claim 1, characterized in that, The dry powder layer is made of natural sodium-based bentonite.

3. The overlapping structure of the natural sodium-based bentonite waterproof blanket as described in claim 1, characterized in that, The putty layer is formed by mixing natural sodium-based bentonite with colloids.

4. The overlapping structure of the natural sodium-based bentonite waterproof blanket as described in claim 1, characterized in that, The middle part of the covering section arches upwards, the inner end of the covering section is fixedly arranged, and the outer end of the covering section is suspended and wrapped by the putty layer.

5. The overlap structure of the natural sodium-based bentonite waterproof blanket as described in claim 1, characterized in that, The end of the flat section has an inner opening between it and the covering section. The inner opening communicates with the inner side of the overlap interval and is covered with a rubber block.

6. The overlapping structure of the natural sodium-based bentonite waterproof blanket as described in any one of claims 1-5, characterized in that, The end of the flat section is embedded in the rubber block and is wrapped by the rubber block.

7. The overlapping structure of the natural sodium-based bentonite waterproof blanket as described in any one of claims 1-5, characterized in that, The putty layer has an extension that extends beyond the outer opening, and the top of the extension is arc-shaped.

8. The overlap structure of the natural sodium-based bentonite waterproof blanket as described in claim 7, characterized in that, One end of the extension abuts against the end of the covering section, and the other end of the extension abuts against the tiling section.

9. The overlapping structure of the natural sodium-based bentonite waterproof blanket as described in claim 8, characterized in that, The extension portion presses against the end of the covering section and bends downward so that the end of the covering section is inclined toward the tiling section.

10. The overlapping structure of the natural sodium-based bentonite waterproof blanket as described in any one of claims 1-5, characterized in that, The width of the overlap interval is greater than 250mm.

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