外文翻譯---廢棄混凝土再生新技術探索(文件)
【正文】 elopment resources prehensive utilization of waste materials, strengthen recycling, accelerate the industrialization, promote waste disposal of waste into usable resources. Protect the environment and save energy, reducing waste, with continuous way, using renewable resource is the important content of strategy of sustainable development. The building materials industry is typical of basic raw materials industry in the national economy development, plays an important role. The building materials industry is typical resources, energy consumption industries in its rapid development, at the same time, facing the excessive consumption of resources, energy and environmental pollution. Construction and building materials industry is the fundamental way to walk the path of sustainable development [1]. At first, the use of concrete in the crushing only a simple as recycled coarse aggregate, the production of natural regeneration aggregate performance and the performance of coarse aggregate, main show there is some difference in density low, bibulous rate is high, crush index is big, show the gap regeneration aggregate rate high, low intensity, and it is mainly because the surface adhesion has large cement mortar and crushing process in certain micro cracks of introducing the sake [2] and generated concrete performance low, durability, freezingthawing resisting, corrosion resistance is poor. The researchers based on renewable aggregate reuse the problems existing in the process of recycled aggregate, carried on the physical and chemical modification and plastic modification. As such ZhuChong performance by plastic to remove the mortar, renewable aggregate surface water that particles, smooth, prepared by reducing shrinkage of concrete lower, but still higher than the natural aggregate concrete [3]. Not solve the regeneration aggregate micro cracks in the malpractices. Currently have researchers of the waste prehensive utilization of concrete research, through the screening get bonding mortar or progress screening production of renewable cement hydration activity with. If SunRongGuang etc [4] to the old cement. after high temperature treatment of slurry rehydration characteristics study gel, it is concluded that renewable cement with a rehydration ability, while generating C S H gel, Aft and CH that hydration products such material, but same structure dehydrated phases because of the existence of hydration speed to. YuRui etc [5] for water mud through the research that fly ash and position modifier gypsum slurry can extend the initial setting activation time and strengthen the pressive strength, however does not reduce activation of standard slurry water viscosity. Due to easy hydration of cement stone dehydration need time, so calcining time
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