| RPC镀铜微丝钢纤维 |
| 添加时间：2018/11/23 13:47:09 浏览次数： |
| RPC镀铜微丝钢纤维是活性粉末混凝土（Reactive Powder Concrete，以下简称RPC）的重要组成部分，RPC具有超高强度、高韧性、高耐久性、体积稳定性良好的新型材料。 RPC copper-plated microwire steel fiber is an important component of reactive powder concrete (RPC), RPC is a new material with super high strength, high toughness, high durability and good volume stability. 2.RPC混凝土的优点 2. Advantages of RPC Concrete 3. 用途及参考 3. uses and references 镀铜微丝钢纤维 Copper-plated microwire steel fibers 它是 DSP ( Densified System Containing Ultra-fine Particles )材料与纤维增强材料相复合的高技术混凝土。根据其组成和热处理方式的不同，这种混凝土的抗压强度可以达到200MPa至800MPa；抗拉强度可以达到20MPa至50MPa；弹性模量为40Gpa至60Gpa；断裂韧性高达40000J/m2，是普通混凝土的250倍，可与金属铝媲美；氯离子渗透性是高强混凝土的1/25，抗渗透能力极强；300次快速冻融循环后，试样未受损，耐久性因子高达100%；预应力活性粉末混凝土梁的抗弯强度与其自重之比接近于钢梁。RPC在工程结构中的应用可以解决目前的高强与高性能混凝土抗拉强度不够高、脆性大、体 积稳定性不良等缺点，同时还可以解决钢结构的投资高、防火性能差、易锈蚀等问题。 It is a high-tech concrete composed of DSP (Densified System Containing Ultra-fine Particles) material and fiber reinforced material. According to its composition and heat treatment method, the compressive strength of the concrete can reach 200 MPa to 800 MPa, the tensile strength can reach 20 MPa to 50 MPa, the modulus of elasticity is 40 Gpa to 60 Gpa, the fracture toughness is as high as 40 000 J/m2, which is 250 times higher than that of ordinary concrete and can be comparable to that of metal aluminium. 1/25, the penetration resistance is very strong; after 300 rapid freeze-thaw cycles, the specimen is not damaged, and the durability factor is as high as 100%. The ratio of flexural strength to self-weight of pre-stressed RPC beams is close to that of steel beams. The application of RPC in engineering structures can solve the shortcomings of high strength and high performance concrete such as low tensile strength, large brittleness, poor volume stability, etc. At the same time, it can also solve the problems of high investment, poor fire resistance and easy corrosion of steel structures. ★从工程应用角度来看，活性粉末混凝土有以下的优点： From the point of view of Engineering application, reactive powder concrete has the following advantages: ⑴ RPC可以有效地减轻结构物的自重。RPC具有很高的抗压强度和抗剪强度，在结构设计中可以采用更薄的截面或具有创新性的截面形状，从而使结构自重比普通混凝土结构轻得多。 _RPC can effectively reduce the weight of the structure. RPC has very high compressive strength and shear strength. Thinner section or innovative section shape can be used in structural design, so that the weight of structure is much lighter than that of ordinary concrete structure. ⑵可以大幅度提高结构物的耐久性。RPC材料减小了界面过渡区的厚度与范围。骨料粒径的减小，其自身存在缺陷的机率减小，整个基体的缺陷也减少。RPC十分密实，孔隙率极低，它不但能够阻止放射性物质从内部泄漏，而且能够抵御外部侵蚀性介质的腐蚀，从整体上提高了体系均匀性、强 度和耐 (2) The durability of structures can be greatly improved. RPC material reduces the thickness and range of interface transition zone. With the decrease of aggregate size, the probability of defects in aggregate decreases, and the defects in the whole matrix decreases. RPC is very compact and has very low porosity. It can not only prevent radioactive material from leaking from the inside, but also resist the corrosion of external corrosive media, and improve the uniformity, strength and resistance of the system as a whole. 久性。 Lasting. ⑶采用RPC设计的构件，可以极大地减少箍筋和受力筋的用量，甚至可以不设置箍筋。 (3) The components designed by RPC can greatly reduce the amount of stirrups and stress bars, even without stirrups. ★用途及参数： ★用途及参数： 宇森RPC镀铜微丝钢纤维主要用于高速铁路、RPC盖板及重要工程构件，其中纤维直径为0.2-0.25mm,长度为13mm,抗拉强度>2850MPA，具有高强、抗拉、抗磨、抗裂、抗弯、抗拆、抗冲击等性能。执行JG/T3064-1999《钢纤维混凝土》YB/T151-1999《混凝土用钢纤维》ASTM A820-90《纤维混凝土用钢纤维》标准。 Yusen RPC copper-plated microwire steel fibers are mainly used in high-speed railway, RPC cover and important engineering components, in which the diameter of fibers is 0.2-0.25 mm, the length is 13 mm, and the tensile strength is more than 2850 MPA. They have high strength, tensile, wear, crack, bending, dismantling and impact resistance. Implement JG/T3064-1999 "Steel Fiber Concrete" YB/T151-1999 "Steel Fiber for Concrete" ASTM A820-90 "Steel Fiber for Fiber Concrete" standard. |
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