| 聚丙烯纤维商品混凝土性能特点 |
| 添加时间：2019/2/26 14:12:25 浏览次数： |
| 聚丙烯纤维商品混凝土性能特点 Performance Characteristics of Polypropylene Fiber Commercial Concrete 1.提高商品混凝土抗裂性能。商品混凝土裂缝主要发生在商品混凝土硬化前，此阶段由于水分的蒸发转移，因而引起商品混凝土内部塑性裂缝的产生。掺入聚丙烯工程纤维后，在商品混凝土内部形成一种均匀三维不定向分布的支撑体系，延缓和阻止早期商品混凝土塑性裂缝的发生和发展，因此起到更为有效的。 1. Improve the crack resistance of commercial concrete. Cracks in commercial concrete mainly occur before hardening of commercial concrete. At this stage, the internal plastic cracks in commercial concrete are caused by evaporation of water. After adding polypropylene engineering fibers, a uniform www.bdwjmc.com www.yimilange.com www.aoerjiamenchuang.com www.bdfscl.cn www.zkzscl.com www.keshun0312.comthree-dimensional non-directional distribution of support system is formed in commercial concrete, which delays and prevents the occurrence and development of plastic cracks in early commercial concrete, thus playing a more effective role. 2.提高商品混凝土的抗渗性能。商品混凝土掺入少量纤维后，抑制了早期干缩裂缝及离析裂缝的产生和发展。使商品混凝土孔隙率大大降低，从而使商品混凝土抗渗能力大幅度提高，因此可用于抗渗要求高的商品混凝土工程，如大坝、商品混凝土防渗面板、引水隧洞、工民建的地下室、贮水池、屋面防水等工程。 2. Improving the impermeability of commercial concrete. The production and development of early shrinkage cracks and segregation cracks are restrained by adding a small amount of fibers to commercial concrete. The porosities of commercial concrete are greatly reduced, and the impermeability of commercial concrete is greatly improved. Therefore, it can be used in commercial concrete projects with high impermeability requirements, such as dams, impermeable concrete face slabs, diversion tunnels, industrial and civil basements, storage tanks, roof waterproofing, etc. 3.提高商品混凝土抗冲击性能。纤维与水泥基料有极强的结合力，纤维能迅速和商品混凝土均匀混合，形成三维不定向支撑体系，当商品混凝土承受拉力和冲击时，均匀分布且数量众多的纤维起到了吸收能量和分担应力的加强筋作用。这一特性对易受到疲劳冲击的商品混凝土结构，如道路、桥梁、机场跑道等工程非常有用。 3. Improving the impact resistance of commercial concrete. Fiber and cement base material have strong bonding force. Fiber can mix with commercial concrete quickly and evenly to form a three-dimensional non-directional support system. When commercial concrete bears tension and impact, uniformly distributed and numerous fibers play the role of reinforcing bars to absorb energy and distribute stress. This characteristic is very useful for commercial concrete structures which are vulnerable to fatigue impact, such as roads, bridges, Airport runways, etc. |
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