UHP.RTYF.Geo-Crete: Eco-Innovation: Development of Sustainable and Affordable Ultra High Performance Geopolymer Concrete for Industrial Floor Applicat

特大火灾中混凝土的干燥收缩和剥落会导致混凝土的使用性能和结构失效，特别是对超高性能混凝土（UHPC）而言。UHPC是一种新型的多用途混凝土，但材料成本高，对环境影响大，阻碍了其广泛应用。拟议项目的主要目标是开发新颖，创新，抗裂，耐火，低成本，用户和环保，低能源，低碳足迹，可持续和耐用的超高性能地聚合物混凝土（UHPGPC），使用从废轮胎（RTSF）和再生骨料（RA）中提取的回收钢纤维。这将导致“UHP.RTYF”。geocrete”可以用作大型工业楼板和隧道等其他应用的平地板。本项目将通过FTIR、SEM-EDS、TGA-DTA、XRD、MIP和X射线CT扫描等多学科研究手段，研究其收缩开裂和火灾剥落机理、纤维基质相容性、耐久性、热、物理、机械和微观结构性能。此外，它将应对目前UHPC的挑战，即更高的材料成本；二氧化碳排放;有限的自然综合资源耗竭；对环境、土壤、地表水和地下水的污染，以及与废弃轮胎、工业废物和建筑与拆除废物（CDW）的无系统处置有关的健康危害。英国谢菲尔德大学在纤维增强混凝土（FRC）设计和混凝土废物再利用方面处于世界领先地位。它还将为研究员提供广泛和全面的培训，以使她成为一名独立的研究人员。

The drying shrinkage and the concrete spalling during the catastrophic fire can lead to serviceability and the structural failures, in particular, for ultra-high performance concrete (UHPC). UHPC is a new and versatile concrete, yet, its extensive application is hindered by high materials cost and high adverse impact on environments. The key objectives of the proposed project are to develop novel, innovative, crack-resistant, fire-resistant, low-cost, user and eco-friendly, lower energy, low carbon footprint, sustainable and durable Ultra High Performance GeoPolymer Concrete (UHPGPC) using Recycled Steel Fibres derived from waste Tyres (RTSF) and Recycled Aggregates (RA). This will lead to "UHP.RTYF.Geo-Crete" which can be used as slabs on grade for the large industrial floors and tunnels amongst other applications. This project will investigate the shrinkage cracking and the fire-induced spalling mechanisms, the fibre-matrix compatibility, durability, thermal, physical, mechanical, and the micro-structural properties through the multidisciplinary investigations including, FTIR, SEM-EDS, TGA-DTA, XRD, MIP and X ray CT scanning. Also, it will deal with the present challenges of UHPC viz., higher materials cost; CO2 emissions; depletion of restricted natural aggregate resources; pollution of environment, soil, surface and sub-surface water as well as health hazards associated with the unsystematic disposal of discarded tyres, industrial wastes and Construction & Demolition Wastes (CDW). The University of Sheffield, U.K. is world leading in Fibre Reinforced Concrete (FRC) design and re-using wastes in concrete. It will also offer a broad and comprehensive training to the fellow in order to establish her as an independent researcher.