废弃混凝土的开发利用

混凝土仍将是21世纪一种应用最广泛的建筑材料，但越来越多的拆除建筑物会产生大量的废弃混凝土块，既带来环境污染，又造成资源浪费。搞好废旧混凝土的开发利用，具有明显的环境效益和经济效益。

On the exploitation and use of discarded concrete

The concrete will still be a kind of the most wildly used building materials in the 21st century. But more and more put-down buildings will cause a great deal of discarded concrete pieces. That will not only pollute the environment, but also will bring about the waste of resources. So the good exploitation and use of discarded concrete as well as its recycling measures mean obvious interests environmentally and economically.