| 聚丙烯纤维分类 |
| 添加时间：2020/9/7 15:07:46 浏览次数： |
| 单丝聚丙烯纤维 Monofilament polypropylene fiber 是一种高强聚丙烯束状单丝纤维，经特殊的表面处理技术，确保了纤维在混凝土中具有极佳的分散性及与水泥机体的握裹力。一般使用于细石混凝土。 混凝土纤维（混凝土建议用12-19mm 混凝土专用纤维强度大抗裂效果好。） 抗拉强度为500mpa以上 断裂伸长15－25% 弹性模量>3800mp It is a kind of high-strength polypropylene bundle monofilament fiber. After special surface treatment technology, it ensures that the fiber has excellent dispersion in concrete and the holding force with cement body. Generally used in fine aggregate concrete. Concrete fiber (12-19mm concrete special fiber is recommended for concrete with high strength and good crack resistance.) The tensile strength is more than 500MPa, the elongation at break is 15-25%, and the elastic modulus is more than 3800mp 1、有效提高砂浆、混凝土的抗裂能力。实验证明：同普通砂浆/混凝土相比，如加入体积掺量0.1%（约0.9Kg/m3）的单丝纤维，砂浆/混凝土的抗裂能力提高70%。 1. Effectively improve the crack resistance of mortar and concrete. The results show that: compared with ordinary mortar / concrete, the crack resistance of mortar / concrete can be improved by 70% if the monofilament fiber with volume fraction of 0.1% (about 0.9kg / m3) is added. 2、大大提高混凝土的抗渗性能。0.9Kg/m3掺量的聚丙烯束状单丝纤维混凝土比普通混凝土的抗渗能力提高了60%～70%。 2. The impermeability of concrete is greatly improved. The impermeability of 0.9kg/m3 polypropylene bundle monofilament concrete is 60% - 70% higher than that of ordinary concrete. 3、显著提高混凝土的抗冲击性能和耐磨性能。聚丙烯纤维虽然刚度较低，传递荷载的能力差，但能吸收冲击能量，有效减小裂隙，增强介质材料连续性，减小了冲击波被阻断引起的局部应力集中现象，因而能大大提高混凝土抗冲击性能和韧性。 3. The impact resistance and wear resistance of concrete are significantly improved. Although the stiffness of polypropylene fiber is low and the ability to transfer load is poor, it can absorb the impact energy, effectively reduce the cracks, enhance the continuity of medium materials, and reduce the local stress concentration phenomenon caused by the blocking of shock wave, so it can greatly improve the impact resistance and toughness of concrete. 4、提高混凝土的抗冻性能。在混凝土中加入聚丙烯纤维，可以缓解温度变化而引起的混凝土内部应力的作用，阻止温度裂缝的扩展；同时，混凝土抗渗能力的提高也有利于其抗冻能力的提高。实践及研究都表明，在混凝土中加入聚丙烯纤维可作为一种有效的混凝土温差补偿抗裂手段。 4. Improve the frost resistance of concrete. Adding polypropylene fiber into concrete can alleviate the effect of internal stress caused by temperature change and prevent the expansion of temperature cracks; at the same time, the improvement of concrete impermeability is also conducive to the improvement of its frost resistance. Practice and research show that adding polypropylene fiber into concrete can be used as an effective means of temperature difference compensation and crack resistance of concrete. 5、提高混凝土制品的质量，有效保持制品边、角、表面的完整性，使制品内的钢筋不受腐蚀。砂浆纤维（砂 浆建议用3-12mm 砂 浆专用纤维分散性能好韧性好可有效防止起球砂浆纤维的性能比：砂浆中加入纤维主要是，赋予砂浆一定的韧性，改善砂浆的抗裂性能，抑制砂浆早期裂缝的产生，主要有以下作用：（1）阻裂,阻止砂浆基体中原有缺陷的扩展并有效延缓裂缝的出现。（2）防渗:提高砂浆基体的密实性，阻止外界水份侵入。（3）耐久，改善砂浆基体抗冻，抗疲劳等性能，提高其耐久性。（4）抗冲击：提高砂浆基体耐受变形能力，从而改善其韧性和抗冲击性。（5）抗拉：使用纤维可以起到提高基体的抗拉强度的作用。（6）韧性高：砂浆纤维具有较高的韧性和强度，在砂浆搅拌中不易打弯成球,网状聚丙烯纤维 其外观为多根纤维单丝相互交连而成网状结构。当聚丙烯网状纤维投入到混凝土后，在混凝土搅拌过程中，纤维单丝间的横向连结经混凝土自身的揉搓和摩擦作用而破坏，形成纤维单丝或网状结构充分张开，从而实现数量众多聚丙烯纤维均匀掺入混凝土中的效果。 5. Improve the quality of concrete products, effectively maintain the integrity of the edges, corners and surfaces of the products, so that the reinforcement in the products is not corroded. Mortar fiber (it is recommended to use 3-12mm special fiber for mortar, which has good dispersing performance and good toughness, which can effectively prevent pilling. The fiber performance ratio of mortar: adding fiber into mortar mainly gives mortar certain toughness, improves mortar crack resistance, and restrains mortar early cracks, which mainly has the following functions: (1) crack resistance, It can prevent the expansion of original defects in mortar matrix and effectively delay the appearance of cracks. (2) Anti seepage: improve the compactness of mortar matrix and prevent the invasion of external water. (3) Durability, improve the frost resistance and fatigue resistance of mortar matrix, and improve its durability. (4) Impact resistance: improve the deformation resistance of mortar matrix, so as to improve its toughness and impact resistance. (5) Tensile strength: the use of fibers can improve the tensile strength of the matrix. (6) High toughness: mortar fiber has high toughness and strength, and it is not easy to bend into balls during mortar mixing. The appearance of reticular polypropylene fiber is a network structure formed by multiple fiber monofilaments. When the single fiber is mixed into the concrete, the fiber is mixed into the concrete to form a mesh structure, and the fiber is mixed into the concrete to form a mesh structure. 工程聚丙烯纤维 Engineering polypropylene fiber 是一种新型的混凝土增强纤维，被称为混凝土的“次要加强筋”。掺入聚丙烯纤维的混凝土品质得到改善，综合使用性能得到提高。具有掺加工艺简单、价格低廉、性能优异等特点。作为一种新型的混凝土增强纤维，聚丙烯网状纤维正成为继玻璃纤维、钢纤维、不锈钢纤维后纤维混凝土科学研究和应用领域的新热点. It is a new type of concrete reinforced fiber, known as the "secondary reinforcement" of concrete. The quality of concrete mixed with polypropylene fiber is improved and the comprehensive performance is improved. It has the advantages of simple process, low price and excellent performance. As a new type of concrete reinforced fiber, polypropylene mesh fiber is becoming a new hotspot in the scientific research and application of fiber reinforced concrete after glass fiber, steel fiber and stainless steel fiber |
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