The hottest smart composite seismic wallpaper

Smart composite seismic "wallpaper"

the earthquake that occurred in central Italy in the spring of 2009 killed about 300 people and destroyed 15000 houses. After the disaster, construction engineers evaluated the state of the remaining buildings and determined the reinforcement method. The engineers selected glass fiber or carbon fiber fabric as reinforcement material

R & D project

in Venice, 500 kilometers away from the epicenter, a research center has accepted the task of designing future textiles, that is, to design materials that can protect buildings vulnerable to natural disasters such as earthquakes and landslides, and even further, to design materials that can self detect damage

an engineer from the center explained that the reason is very simple. We must strive to build buildings more like human bodies. We should build a cortex for them. Using the information obtained from sensors, we can monitor the state of buildings for a long time and establish a structural model

one of the various products designed along this line is a composite seismic "wallpaper". This product won the 2010 JEC Innovation Award in architecture and construction. The winner is Italian D'Appolonia company, and 27 manufacturers and institutions from Italy, Germany, Sweden, Israel and India are also partners in this project, including Italian s multi axial technology company in the environment free of corrosive gases, German Marimo textile machinery company

composite seismic wallpaper

composite seismic wallpaper is composed of the following items: optical fiber sensor Glass fiber and polymer fiber multi axial warp knitted fabric, nano particle modified coating (for coating fabric), nano particle modified mortar (for pasting fabric to building structure) and inquiry system for obtaining information from sensors. The project configures large warp knitting equipment to weave optical fiber cables into multi axial fabrics. The type, orientation and density of fibers used are optimized to meet the complex material requirements of buildings to resist seismic forces. In this respect, the multi axial fabric structure is superior

then the fabric is coated to improve its durability and the bonding interface between it and mortar. The nano particles used in the improved polymer coating with the rapid development of global high technology are produced by members of the cooperative team. Later, the coated fabric was pasted onto the building structure with mortar. The mortar is also improved by nano particle polymer additives. Then put the embedded sensor in place to form a query point. Permanent or portable interrogators can be used to collect and store data for engineering analysis

salient features

this composite seismic wallpaper can be used for full coverage or large-scale reinforcement of unreinforced masonry building structures. The method is simple, low cost and easy to construct. When used as full coverage, tests in large laboratories show that this solution improves the environmental requirements of the experiment: the structural strength is more than 200% and the structural toughness is more than 200%. Walls prone to embrittlement and collapse can be protected by this wallpaper even if cracks appear

reinforcement is only half of the function of this anti-seismic wallpaper. Because of the embedded sensor, it can detect before, during and after the earthquake, either statically or dynamically (high frequency). Engineers use these measurement data to evaluate and quantify the benefits of the restoration project, control the new project and help the building survive its service life safely

the initial application goal of this innovative achievement is housing and other construction projects. However, this skin principle with sensors can also be applied to any composite structure, such as boats, wind turbines, various vehicles and aircraft

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