详情

Energy Efficient and Environmental Friendly Cement Free Concrete (CFC) for Pavement and Bridge Deck Application

项目名称：	Energy Efficient and Environmental Friendly Cement Free Concrete (CFC) for Pavement and Bridge Deck Application
摘要：	Cement manufacturing process accounts for approximately 5-7% of global carbon dioxide (CO2) emission and has significant adverse impact on a wide range of sustainability issues including climate change, pollution and resources depletion. Increased awareness in this decade on the significance of developing sustainable and environmentally efficient infrastructure materials renewed the interest in exploring Cement Free Concrete (CFC) (also known as Alkali Activated Concrete or Geopolymer Concrete). This low energy, sustainable concretes are developed by activating fly ash or ground granulated blast furnace slag using commercially available alkali such as sodium hydroxide or sodium silicate hydrate (waterglass). However, the lack of studies and experimental data on optimum mixture proportioning of alkali activated concretes, especially for pavement application, is a serious limitation in designing and developing concretes of appropriate specifications in the field. In the proposed study, an experimental characterization to evaluate the viability of alkali activated CFC for pavement and bridge deck applications, by activating Class C fly ash or slag is recommended. The major focus of the proposed study is to identify the optimal proportion of an activator or a combination of activators that can provide adequate strength without requiring any thermal curing, making the CFCs even more energy efficient and user friendly. In addition to the optimum mixture proportion, the fresh properties (workability, setting time and heat of hydration), hardened properties (compressive, tensile, flexural strengths, modulus of elasticity and stress strain behavior), and durability performance (resistance to drying shrinkage, chloride ion penetration, alkali silica reaction) will be evaluated in comparison to the performance of a typical concrete mixture proportion that New York/New Jersey Department of Transportation (DOT) use for the pavement and bridge deck construction. Intellectual Merits of the proposed study is that it will provide deeper insight into the behavior and performance of alkali activated concrete, especially for pavement and bridge deck construction applications. The experimental data obtained through this research may contribute to develop standards and guidelines that may promote the usage of this greener concrete by the DOTs, especially in Region 2.
状态：	Completed
资金：	103940.00
资助组织：	University Transportation Research Center<==>Research and Innovative Technology Administration
项目负责人：	Eickemeyer, Penny；Mooney, Deborah
执行机构：	Clarkson University
开始时间：	20120915
实际结束时间：	20131231
主题领域：	Bridges and other structures；Highways；Pavements；I15: Environment