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    Home»JMI/EDU»Jamia, IIT-R researchers show way for future earthquake-resistant buildings
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    Jamia, IIT-R researchers show way for future earthquake-resistant buildings

    theokhlatimesBy theokhlatimesSeptember 7, 2021No Comments3 Mins Read
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    Future earthquake- resistant buildings here

    Researchers of Jamia Millia Islamia (JMI) and IIT Roorkee have found that Thermocol or Expanded Polystyrene (EPS) if used as a composite material in the core of reinforced concrete sandwich, can resist earthquake forces on up to four storey buildings. Thermocol can be the material of the future for construction of earthquake resistant buildings, with thermal insulation and could also save energy required to develop construction materials.

    The researchers tested a full scale building and a number of wall elements constructed with thermocol sandwiched between two layers of concrete at the National Seismic Test Facility (NSTF) of the Department of Earthquake Engineering, IIT Roorkee developed under Fund for Improvement of S&T Infrastructure (FIST) programme of Department of Science & Technology (DST), Government of India.

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    Adil Ahmad, the research Scholar (IITR) and Associate Professor, Faculty of Architecture & Ekistics, JMI, who conducted the tests, evaluated the behaviour of the constructions under lateral forces, as earthquakes cause a force predominantly in lateral direction. The investigation was supplemented with detailed computer simulation of a realistic 4-storey building.

    Prof Yogendra Singh, (ex-faculty member, Department of Civil Engineering, JMI and presently Professor at Department of Earthquake Engineering, IIT Roorkee) supervising the research informed that the analysis shows that a four storey building constructed with this technique is capable of resisting earthquake forces, even in the most seismic zone (V) of the country, without any additional structural support.

    They have attributed this earthquake resistance capability to the fact that the EPS layer is sandwiched between two layers of concrete having reinforcement in the form of welded wire mesh. The researchers said that the force being applied on a building during an earthquake arises due to the inertia effect and hence depends on the mass of the building.

    Thermocol resists earthquakes by reducing the mass of the building.

    In this technique, the EPS core and the wire mesh reinforcement is produced in a factory. The building skeleton is first erected from the factory-made core and reinforcement panels and then concrete is sprayed on the skeleton core. This technique does not require any shuttering and hence can be constructed very fast.

    Besides resisting earthquakes, the use of expanded polystyrene core in concrete walls of a building can result in thermal comfort. The core provides the necessary insulation against the heat transfer between building interior and exterior environment. This can help in keeping the building interiors cool in hot environments and warm during the cold conditions. India suffers a large variation of temperature not only in different parts of the country, but also during different seasons of the year. Therefore, thermal comfort is a crucial consideration along with structural safety.

    The technology also has the potential of saving construction material and energy, with an overall reduction in the carbon footprint of buildings. It replaces a large portion of concrete volume from the walls and floor/roof. This replacement of concrete with the extremely lightweight EPS not only reduces mass, thereby decreasing the earthquake force acting on a building, but also diminishes the burden on the natural resources and energy required to produce the cement concrete.

    EARTHQUAKE IIT Roorkee jamia millia islamia resistance buildings
    theokhlatimes

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