WO2018196495A1 - 一种三维水泥基土工复合材料防水垫 - Google Patents

一种三维水泥基土工复合材料防水垫 Download PDF

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WO2018196495A1
WO2018196495A1 PCT/CN2018/078769 CN2018078769W WO2018196495A1 WO 2018196495 A1 WO2018196495 A1 WO 2018196495A1 CN 2018078769 W CN2018078769 W CN 2018078769W WO 2018196495 A1 WO2018196495 A1 WO 2018196495A1
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cement
woven geotextile
dimensional
needle
geocomposite
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PCT/CN2018/078769
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English (en)
French (fr)
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焦剑锋
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梁铃婵
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil

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  • the utility model relates to a three-dimensional cement-based geocomposite composite waterproof pad, belonging to the technical field of geosynthetic materials.
  • Geosynthetics is a kind of new geotechnical material. It was once called “geo-textile” and “geo-textile” in the early days. Due to its excellent performance in various aspects, it has been widely used in roads, railways, water conservancy ports and breakwaters. Landfill, revetment, retaining wall and other fields, mainly for reinforcement, protection, filtration, drainage, isolation, etc. However, in some special projects, traditional geosynthetics can not fully meet the needs of the project. Such as mountain slope protection, river embankment reinforcement, canal slope, underwater pipeline and other construction projects.
  • the technical problem to be solved by the present invention is to provide a three-dimensional cement-based geocomposite composite waterproof pad.
  • the utility model relates to a three-dimensional cement-based geocomposite waterproof material pad, which comprises a flame-retardant needle-punched non-woven geotextile, a woven geotextile, a three-dimensional mesh cloth, a needle-punched non-woven geotextile, a HDPE anti-seepage geomembrane and a cement concrete.
  • Powdered, flame-retardant needle-punched non-woven geotextile has a woven geotextile on the lower side, and a three-dimensional mesh cloth on the lower side of the woven geotextile.
  • the underside of the three-dimensional mesh cloth is provided with a needle-punched non-woven geotextile, and the lower side of the needle-punched non-woven geotextile is laid.
  • the flame-retardant needle-punched non-woven geotextile is produced by using flame-retardant polyester staple fiber
  • the woven geotextile is produced by polypropylene
  • the flame-retardant needle-punched non-woven geotextile and the woven geotextile are pre-composited by means of acupuncture composite.
  • the three-dimensional mesh material is made of glass fiber, polypropylene fiber or polyester fiber.
  • the three-dimensional mesh cloth is a continuous three-dimensional network structure, and has a good skeleton reinforcement effect on the cement-based hardening material, so that the geocomposite material has high compressive strength and flexural strength after hardening.
  • the flexural strength can reach 6.5Mpa and the compressive strength can reach 40Mpa.
  • the three-dimensional cement-based geocomposite waterproof pad has a thickness of 5 mm-15 mm
  • the cement-based composite material is mainly composed of cement and additive powder, and some fine skeleton materials, such as ultra-fine calcium carbonate, may be appropriately added according to engineering needs.
  • silica fume wherein the cement is one or more of Portland cement, refractory high alumina cement, sulphoaluminate cement, iron aluminate cement, and the additive is one of a water reducing agent, an air entraining agent, and a swelling agent.
  • the cement is one or more of Portland cement, refractory high alumina cement, sulphoaluminate cement, iron aluminate cement
  • the additive is one of a water reducing agent, an air entraining agent, and a swelling agent.
  • the additive is one of a water reducing agent, an air entraining agent, and a swelling agent.
  • the utility model has the beneficial effects that the three-dimensional cement-based geocomposite composite waterproof pad creatively combines the traditional cement concrete building material and the geosynthetic material to form a reinforced three-dimensional cement-based geocomposite waterproof pad capable of rapid forming, the composite
  • the material is soft and can adapt to various complex terrain changes. It can be quickly solidified into various shapes of complex building components after contact with water, avoiding mixing and pouring cement concrete on site, and low cost, excellent performance, waterproof and fireproof. Compressive and frost-resistant, it has a wide application space. This material can be directly laid on the mountain, on the canal, on the river bank, or fixed around the underwater pipeline, and it can play a good protection role after solidification with water. Thereby preventing landslides, soil erosion, and effectively protecting underwater pipelines.
  • Figure 1 is a schematic view of the overall structure of the present invention.
  • 1-flame-punched needle-punched non-woven geotextile 2-woven geotextile; 3-3-dimensional mesh cloth; 4-needle-punched non-woven geotextile; 5-HDPE anti-seepage geomembrane; 6-cement concrete powder.
  • the specific embodiment adopts the following technical solutions: it comprises a flame-retardant needle-punched nonwoven geotextile 1, a woven geotextile 2, a three-dimensional mesh cloth 3, a needle-punched non-woven geotextile 4, and an HDPE impervious geotechnical Membrane 5 and cement concrete powder 6, the lower side of the flame-retardant needle-punched non-woven geotextile 1 is provided with a woven geotextile 2, the lower side of the woven geotextile 2 is laid with a three-dimensional mesh cloth 3, and the lower side of the three-dimensional mesh cloth 3 is provided with a needle.
  • the non-woven geotextile 4 is provided with a HDPE anti-seepage geomembrane 5 on the lower side of the needle-punched non-woven geotextile 4, and the three-dimensional grid cloth 3 is filled with cement concrete powder 6.
  • the flame-retardant needle-punched nonwoven geotextile 1 is produced by flame-retardant polyester staple fiber
  • the woven geotextile 2 is produced by polypropylene
  • the flame-retardant needle-punched nonwoven geotextile 1 and the woven geotextile 2 are needle-punched composite.
  • the method is pre-combined together;
  • the three-dimensional mesh cloth 3 material is made of glass fiber, polypropylene fiber or polyester fiber;
  • the three-dimensional mesh cloth 3 is a continuous three-dimensional network structure, and has good good for cement-based hardening material.
  • the reinforcing effect of the skeleton reinforcement makes the geocomposite composite have high compressive strength and flexural strength, the flexural strength can reach 6.5Mpa, and the compressive strength can reach 40Mpa; the cement-based geocomposite composite material is waterproof.
  • the thickness of the pad is 5mm-15mm, and the cement-based composite material is mainly composed of cement and additive powder.
  • Some fine skeleton materials such as ultra-fine calcium carbonate and silica fume can be added according to engineering needs, wherein the cement is Portland cement and high in fire resistance.
  • One or more of aluminum cement, sulphoaluminate cement, and iron aluminate cement, and the additive is one or more of a water reducing agent, an air entraining agent, and a swelling agent.
  • the manufacturing process of the specific embodiment a.
  • the flame-retardant needle-punched non-woven geotextile 1 and the woven geotextile 2 are needle-punched, and the composite material is used as a base fabric of the cement waterproof pad to prevent and prevent the cement powder from being
  • the base fabric penetrates, and on the other hand, the water can be quickly passed through from above, so that the cement mixture can rapidly solidify and solidify;
  • the three-dimensional mesh cloth 3 is laid on the base cloth through the discharge machine while passing through the paving
  • the hydraulic cement inorganic powder material is laid on the base fabric and the middle of the three-dimensional mesh, and the cement mixture powder is compacted by applying appropriate pressure during the laying.
  • the three-dimensional mesh cloth 3 in the middle mainly plays the role of reinforcing the skeleton of the cement concrete. It can well overcome the shortcomings of the cement-based hardening material being easily broken, and improve the uniformity of the intermediate cement laying. After hardening, the compressive and bending strength of the overall composite material is due to the skeleton reinforcement of the three-dimensional mesh cloth.
  • the non-woven geotextile can prevent cement powder penetration, short fiber and cement have very Compatibility, after the cement mixture is hardened, can form a hard whole with the non-woven geotextile; d, the five materials of the above ac material are composited into a whole by a non-woven needle punching process, and the intermediate short fibers are not from the upper layer of polypropylene.
  • the spinning geotextile is directly penetrated into the base fabric by needle punching and is held by the base fabric to form a complete three-dimensional reinforced structural material; e. the hot melt adhesive is sprayed on the needle-punched nonwoven geotextile 4 by a hot melt process.
  • the hot melt adhesive needs to cover the surface of the non-woven geotextile, and then the HDPE anti-seepage geomembrane 5 is attached to the needle-punched non-woven geotextile 4.
  • the thickness of the geomembrane can be added or subtracted according to the engineering needs, and then packaged in rolls and used. Pallet transportation to prevent damage to the outer packaging during transportation; f.
  • the waterproof geomembrane is at the bottom, the flame-retardant needle-punched non-woven geotextile 1 will be at the top, and then the flame-retardant needle-punched non-woven geotextile 1 Sprinkle water above, the water directly penetrates into the cement mixture powder 6 through the non-woven geotextile and the woven cloth, and the powder rapidly solidifies and hardens with water to form a special three-dimensional cement-based waterproof pad geotechnical material.
  • the composite material in the specific embodiment adopts the production of flame-retardant fiber, and has good fireproof function after hardening, wherein the HDPE anti-seepage geomembrane is composited by hot melt adhesive, and has good waterproof and anti-penetration performance, and the composite material is pre-treated.
  • the cement-based concrete powder material is encapsulated in geotextiles. It is usually soft and cloth-like. It can be stored in rolls. It is laid on the surface of the construction object during use. It is directly hardened after watering, eliminating the construction process of laying geotextile, mixing and pouring concrete. .
  • the cement powder material of the composite material can be formulated according to construction requirements and climatic conditions, and the hydration time can also be controlled.
  • the specific embodiment combines five different materials organically by a non-woven needle punching method, and has the dual advantages of the traditional geosynthetic material and the traditional cement concrete material, and has high tensile strength, high compressive strength and high It has good flexural strength, durability, waterproof, fireproof and anti-penetration. It is soft and easy to deform before contact with water. It can be solidified into various shapes after contact with water. It can be applied to traditional mixing methods and traditional geosynthetic materials. The field is especially suitable for special engineering needs, such as mountain slope protection, river embankment reinforcement, canal and underwater pipeline protection.

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Abstract

一种三维水泥基土工复合材料防水垫，包括阻燃针刺无纺土工布（1）、编织土工布（2）、三维网格布（3）、针刺无纺土工布（4）、HDPE防渗土工膜（5）和水泥混凝土粉末（6），阻燃针刺无纺土工布（1）下侧铺设有编织土工布（2），编织土工布（2）下侧铺设有三维网格布（3），三维网格布（3）下侧铺设有针刺无纺土工布（4），针刺无纺土工布（4）下侧铺设有HDPE防渗土工膜（5），三维网格布（3）中填满了水泥混凝土粉末（6）。

Description

一种三维水泥基土工复合材料防水垫 技术领域
本实用新型涉及一种三维水泥基土工复合材料防水垫，属于土工合成材料技术领域。
背景技术
土工合成材料是一种极具生命力的新型土工材料，早期曾被称作为“土工织物”、“土工布”等，由于其各方面性能优异，已经被广泛应用于道路、铁路、水利港口、防波堤、垃圾填埋、护岸、挡土墙等各个领域，主要起加筋、防护、过滤、排水、隔离等作用，但是，在一些特殊的工程中，传统的土工合成材料已经不能完全满足工程的需要，比如山体护坡，河堤加固，水渠斜坡，水下管道等建筑工程。这些工程中，单纯的传统土工合成材料只能置于岩土中，或者铺设在土壤的表面，起防护过滤加筋作用，但是这还远远不够，工程上还需要进一步浇筑混凝土加固表面，保持水土。然而，这些工程在现场浇筑混凝土的施工方式又是很难操作的，尤其是山体护坡，水渠斜坡等。
实用新型内容
针对上述问题，本实用新型要解决的技术问题是提供一种三维水泥基土工复合材料防水垫。
本实用新型的一种三维水泥基土工复合材料防水垫，它包含阻燃针刺无纺土工布、编织土工布、三维网格布、针刺无纺土工布、HDPE防渗土工膜和水泥混凝土粉末，阻燃针刺无纺土工布下侧铺设有编织土工布，编织土工布下侧铺设有三维网格布，三维网格布下侧铺设有针刺无纺土工布，针刺无纺土工布下侧铺设有HDPE防渗土工膜，三维网格布中填满了水泥混凝土粉末。
作为优选，所述的阻燃针刺无纺土工布采用阻燃涤纶短纤维生产，编织土工布采用聚丙烯生产，阻燃针刺无纺土工布和编织土工布采用针刺复合的方式预先复合在一起。
作为优选，所述的三维网格布材料采用玻璃纤维、聚丙烯纤维或涤纶纤维。
作为优选，所述的三维网格布为连续的立体网络结构，对水泥基硬化材料有着很好的骨架加筋增强作用，使该土工复合材料硬化后有着很高的抗压强度和抗折强度，抗折强度 可以达6.5Mpa,抗压强度可达到40Mpa。
作为优选，所述的该三维水泥基土工复合材料防水垫厚度为5mm-15mm，且水泥基复合材料主要由水泥和添加剂粉末组成，可以根据工程需要适当添加部分细骨架材料，比如超细碳酸钙和硅灰，其中水泥是硅酸盐水泥、耐火高铝水泥、硫铝酸盐水泥、铁铝酸盐水泥的一种或者几种，添加剂是减水剂、引气剂、膨胀剂中的一种或几种。
本实用新型的有益效果：该三维水泥基土工复合材料防水垫创造性的将传统水泥混凝土建筑材料和土工合成材料复合而成，形成可以快速成型的加筋三维水泥基土工复合材料防水垫，该复合材料比较柔软，能适应贴合各种复杂地形变化，与水接触后可快速凝固成各种形状的复杂的建筑构件，避免现场搅拌和浇筑水泥混凝土，并且成本低廉，性能优异，防水，防火，抗压，耐冻，有着广阔的应用空间，将这种材料直接铺设于山体上，水渠上，河堤上，或者围绕水下管道固定，与水凝固后就可以起到很好的保护作用，从而预防山体滑坡，水土流失，有效保护水下管道。
附图说明
为了易于说明，本实用新型由下述的具体实施及附图作以详细描述。
图1为本实用新型的整体结构示意图。
1-阻燃针刺无纺土工布；2-编织土工布；3-三维网格布；4-针刺无纺土工布；5-HDPE防渗土工膜；6-水泥混凝土粉末。
具体实施方式
如图1所示，本具体实施方式采用以下技术方案：它包含阻燃针刺无纺土工布1、编织土工布2、三维网格布3、针刺无纺土工布4、HDPE防渗土工膜5和水泥混凝土粉末6，阻燃针刺无纺土工布1下侧铺设有编织土工布2，编织土工布2下侧铺设有三维网格布3，三维网格布3下侧铺设有针刺无纺土工布4，针刺无纺土工布4下侧铺设有HDPE防渗土工膜5，三维网格布3中填满了水泥混凝土粉末6。
其中，所述的阻燃针刺无纺土工布1采用阻燃涤纶短纤维生产，编织土工布2采用聚丙烯生产，阻燃针刺无纺土工布1和编织土工布2采用针刺复合的方式预先复合在一起； 所述的三维网格布3材料采用玻璃纤维、聚丙烯纤维或涤纶纤维；所述的三维网格布3为连续的立体网络结构，对水泥基硬化材料有着很好的骨架加筋增强作用，使该土工复合材料硬化后有着很高的抗压强度和抗折强度，抗折强度可以达6.5Mpa,抗压强度可达到40Mpa；所述的该水泥基土工复合材料防水垫厚度为5mm-15mm，且水泥基复合材料主要由水泥和添加剂粉末组成，可以根据工程需要适当添加部分细骨架材料，比如超细碳酸钙和硅灰，其中水泥是硅酸盐水泥、耐火高铝水泥、硫铝酸盐水泥、铁铝酸盐水泥的一种或者几种，添加剂是减水剂、引气剂、膨胀剂中的一种或几种。
本具体实施方式的制作流程：a、将阻燃针刺无纺土工布1和编织土工布2进行针刺复合，此复合材料用作水泥防水垫的基布，一方面阻止和防止水泥粉末从基布穿透，另外一方面又可以让水从上面快速通过，使水泥混合物快速发生水化反应而凝固；b、将三维网格布3通过放料机铺设在基布上，同时通过铺料机将水硬性水泥无机粉末材料铺设到基布上面和三维立体网布中间，在铺设中施加适当的压力使水泥混合物粉末密实，这里中间的三维网格布3主要对水泥混凝土起骨架加筋作用，可以很好的克服水泥基硬化材料易被折断的缺点，提高了中间水泥铺设的均匀度，硬化后，整体复合材料的抗压抗折强度由于三维立体网格布的骨架加筋作用而被大大提高；c、采用针刺无纺土工布4覆盖住水泥混合物，该无纺土工布能防止水泥粉末穿透，短纤维和水泥有非常好的相容性，待水泥混合物硬化后能和无纺土工布形成坚硬的整体；d、将上述a-c的材料的5种材料通过非织造针刺工艺复合成整体，中间短纤维从上层聚丙烯无纺土工布通过针刺直接穿入基布而被基布握持住，从而形成完整的三维加筋结构材料；e、在针刺无纺土工布4上方通过热熔工艺喷入热熔胶，热熔胶需将无纺土工布表面覆盖住，然后再在针刺无纺土工布4上面贴合HDPE防渗土工膜5，土工膜的厚度可以根据工程需要加减，然后成卷包装，并用托盘运输，以预防运输过程中外包装破损；f、最后，施工铺设时，防水土工膜在最下方，阻燃针刺无纺土工布1将位于最上方，然后在阻燃针刺无纺土工布1上面洒水，水通过无纺土工布和编织布直接渗透到水泥混合物粉末6中，粉末遇水快速凝固硬化就构成了特种的三维水泥基防水垫土工材料。
本具体实施方式中的复合材料采用了阻燃纤维生产，硬化后有很好的防火功能，其中通过热熔胶复合了HDPE防渗土工膜，有着很好的防水抗渗透性能，复合材料预先将水泥基混凝土粉末材料封装在土工织物中，平时柔软如布，可成卷包装储存，使用时铺设于施工对象表面，浇水后直接硬化，省去了铺设土工布、搅拌和浇筑混凝土的施工过程。
本具体实施方式中复合材料的水泥粉末材料可以根据施工要求和气候条件来调配，水化时间也可以控制。
本具体实施方式通过非织造针刺法将五种不同的材料有机的结合在一起，具备了传统的土工合成材料和传统的水泥混凝土材料的双重优点，具有高抗拉强度、高抗压和高抗折强度、耐久性好、防水防火、抗渗透，和水接触前，柔软、易变形，和水接触后可以凝固成各种形状，可应用于传统搅拌方式混凝土和传统土工合成材料不能应用的领域，尤其适合一些特殊的工程需要，比如山体护坡，河堤加固，水渠和水下管道保护。
以上显示和描述了本实用新型的基本原理和主要特征和本实用新型的优点。本行业的技术人员应该了解，本实用新型不受上述实施例的限制，上述实施例和说明书中描述的只是说明本实用新型的原理，在不脱离本实用新型精神和范围的前提下，本实用新型还会有各种变化和改进，这些变化和改进都落入要求保护的本实用新型范围内。本实用新型要求保护范围由所附的权利要求书及其等效物界定。

Claims (7)

  1. 一种三维水泥基土工复合材料防水垫，其特征在于：它包含阻燃针刺无纺土工布(1)、编织土工布(2)、三维网格布(3)、针刺无纺土工布(4)、HDPE防渗土工膜(5)和水泥混凝土粉末(6)，阻燃针刺无纺土工布(1)下侧铺设有编织土工布(2)，编织土工布(2)下侧铺设有三维网格布(3)，三维网格布(3)下侧铺设有针刺无纺土工布(4)，针刺无纺土工布(4)下侧铺设有HDPE防渗土工膜(5)，三维网格布(3)中填满了水泥混凝土粉末(6)。
  2. 根据权利要求1所述的一种三维水泥基土工复合材料防水垫，其特征在于：所述的阻燃针刺无纺土工布(1)采用阻燃涤纶短纤维生产，编织土工布(2)采用聚丙烯生产，阻燃针刺无纺土工布(1)和编织土工布(2)采用针刺复合的方式预先复合在一起。
  3. 根据权利要求1所述的一种三维水泥基土工复合材料防水垫，其特征在于：所述的三维网格布(3)材料采用玻璃纤维。
  4. 根据权利要求1所述的一种三维水泥基土工复合材料防水垫，其特征在于：所述的三维网格布(3)材料采用聚丙烯纤维。
  5. 根据权利要求1所述的一种三维水泥基土工复合材料防水垫，其特征在于：所述的三维网格布(3)材料采用涤纶纤维。
  6. 根据权利要求1所述的一种三维水泥基土工复合材料防水垫，其特征在于：所述的三维网格布(3)为连续的立体网络结构。
  7. 根据权利要求1所述的一种三维水泥基土工复合材料防水垫，其特征在于：所述的该三维水泥基土工复合材料防水垫厚度为5mm-15mm，且水泥基复合材料主要由水泥和添加剂粉末组成，其中水泥采用硅酸盐水泥，添加剂采用减水剂。
PCT/CN2018/078769 2017-04-26 2018-03-13 一种三维水泥基土工复合材料防水垫 WO2018196495A1 (zh)

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