半刚性路面基层环境影响评价研究

采用输人输出模型,通过清单分析和归一化处理对我国典型的路面基层材料水泥稳定粒料与石灰稳定粒料以及几种工业固体废弃物路面基层材料的环境影响进行了研究并和水泥混凝土进行了对比.结果表明,工业固体废弃物路面基层对资源能源消耗量少,生产过程中固体废弃物、温室气体、酸雨气体的排放量小.和我国目前广泛使用的水泥稳定粒料相比,其环境影响较小,而且可以被再循环用作水泥生产的混合材,是一类典型的生态建筑材料.

Environmental impact assessment of semi-rigid road base material

This paper aims to present an output-input model initiated by the authors for evaluating the environmental impact of the typical road base materials on the cement granular soil, lime fly-ash granular soil and the industrial solid waste road base materials. As is known, the construction and the maintenance of the road base materials depleted large amount of natural rocks and cement materials, such as cement or lime, therefore, the road base material has a high impact on the environment, however, so far not enough attention has been paid to such impact. Therefore, the present authors have done a catalogue analysis and unitary analysis so as to assess the strength of the semi-rigid materials that may get contracting with the concrete. The results of our analysis indicate that the industrial solid waste road base materials had lower resource wastage, and their green house gas and acid rain gas and solid waste emission proves lower than concrete and other ordinary road base materials. The environmental impact of such industrial solid waste road base materials proves lower than the typical road base materials, such as cement stabilized granular soils. Such materials could be utilized as cement admixture so as to make them a whole serial of ecological building materials.