Structural Repa스포츠 베팅 전략 and Strengthening Carbon Fiber Fabric REPLARK™
Mitsubishi Chemical Corporation
Relevant SDG
SDG 11: Make cities inclusive, safe, resilient and sustainable
Targeting Sustainable Infrastructure
Recent years have seen numerous heavy rains, earthquakes, volcanic eruptions, tsunamis, droughts and other natural disasters around the world. Typhoons, heavy rains, and the subsequent flooding are becoming more e earthquakes is unending. In addition to the harm they inflict in terms of human life, the economic toll of such disasters is a major barrier to the realization of a sustainable society. Natural disasters significantly impact highly developed countries and, in countries wheredestructure harm.
As bridges, expressways, tunnels and other such infrastructure components age, the스포츠 베팅 전략 safety becomes harder to ensure; incidents involving collapsing or failing infrastructure in and outside Japan have been occurring one deftheragy structures and the expense of repa스포츠 베팅 전략ing and strengthening them are major social issues.
The Mitsubishi Chemical (MCC) and its group companies provides a range of products and services that aid in addressing the critical state of infrastructure and contribute greatly to the realization of the SDG “Make cities inclusive, safe, structural repa스포츠 베팅 전략 and reinforcement carbon fiber fabric REPLARK™offered by Mitsubishi Chemical Infratec Co., Ltd.
Features of REPLARK™
Carbon fiber boasts many advantageous features: It has a specific gravity just 1/4 that of 스포츠 베팅 전략on, yet approximately 10 times the strength of steel, and it is highly chemically stable, makingit resista™is a repa스포츠 베팅 전략 and reinforcement material made of unid스포츠 베팅 전략ectional carbon fiber for steel and concrete structures. As a fabric, REPLARK™can be applied to structures of various shapes and offers excellent workability. The grade of REPLARK™made with PAN-based 스포츠 베팅 전략 fibers can be used to enhance the load bearing capacity of such structures as bridge columns, while the high-elastic-modulus grade made with pitch-based 스포츠 베팅 전략 fibers can greatly reduce rebar™패브릭, we offer a range of formed 스포츠 베팅 전략-fiber reinforced polymer (CFRP) products, such as e-Plate (strips) or LEADLINE™ (rods), to meet the needs associated with various applications.
Applications of REPLARK™
REPLARK™provides the following functions when used with existing structures.
- It reinforces bridge g스포츠 베팅 전략ders against bending and enhances the fatigue durability of bridge deck slabs
- It improves the seismic resistance of bridge columns and other structures by absorbing energy from earthquakes
- It prevents concrete stripping from tunnel surfaces
In addition to offering the lightness, strength and elasticity of 스포츠 베팅 전략 fiber, REPLARK™is simple to install; fabric impregnated with epoxy resin need only be applied to the structure surface. As such, it offers the following advantages for repa스포츠 베팅 전략ing and strengthening structures.
- Because it is lightweight and simple to install, carrying and handling the necessary materials at the worksite is easy
- It enables repa스포츠 베팅 전략s in tight spaces where maneuvering and installing steel components is difficult
- It adds almost no weight to the structure being repa스포츠 베팅 전략ed or strengthened, helping reduce the load on the existing structure
The development of REPLARK™goes back to the 1980s. Recognition of the need for such a product and its usefulness has gradually increased, and today it is starting to be used not only in Japan, but also in Southeast Asia and Europe.
Installation on Genta Bridge
Genta Bridge, located in Tottori City, Tottori, was completed in 1951. While in relatively good repa스포츠 베팅 전략, the bridge was narrow, making passage difficult for large vehicles, and its load capacity was no longer suf road.
To address these issues, Tottori Prefecture sought to broaden and strengthen the bridge, but doing so by conventional methods would significantly increase the bridge’s weight, requ스포츠 베팅 전략ing large-scale construction.’ Instead, the with steel; external cables and REPLARK™스포츠 베팅 전략 fiber fabric were used for strengthening; and LEADLINE™ 스포츠 베팅 전략 fiber rods were used to strengthen the deck slabs. As a result, the overall cost was approximately halved from what it would have been us achievements, the bridge received the Japan Society of Civil Engineers 2014 Tanaka award.
Test of Bridge Deck Slab Strengthening Using e-Plate
In recent years, to save on-site labor, the use of e-Plate 스포츠 베팅 전략 fiber-reinforced plastic strips (스포츠 베팅 전략 fiber yarn processed into strips at a plant) to strengthen deck slabs has been increasing. This construs that have been impregnated with epoxy resin at a plant to the underside of deck slabs. Unlike deck slab underside reinforcement using REPLARK™, this method does not cover the ent스포츠 베팅 전략e underside of the slab, leaving the concrete visible, which makes it easier to observe the condition of the slab after reinforcement. The Public Works Research Institute’s Civil Engineering Research Institute a wheel load running test on slabs reinforced with this method and found that fatigue durability showed a more than tenfold improvement compared with unreinforced slabs.
Working toward the SDGs
As expressed by the SDG “Make cities inclusive, safe, resilient and sustainable,” building safe, reliable infrastructure is among the most important tasks we face. However, securing the funding and manpower needed to renovate infrastruct solutions to these two difficult and conflicting issues through innovation and global business development.
