University of Aveiro, Civil Engineering Department/CICECO, 3810-193 Aveiro, Portugal.
Waste Manag. 2010 Apr;30(4):685-96. doi: 10.1016/j.wasman.2009.11.005. Epub 2009 Dec 5.
Nowadays, the increasing amount of wastes is a concerning reality and the environmental aspects has become a major priority. Following this worry, the purpose of this experimental study was to investigate the possibility of using pulp and paper inorganic wastes, named dregs and grits, in bituminous mixtures as aggregate replacement to reduce environmental effects of these wastes disposal. First, the wastes were chemically and physically characterized and also tested primarily taking into account the requirements for aggregates in bituminous mixtures. Then, formulations were prepared replacing aggregates with wastes in different amounts. The mechanical properties of these mixtures containing wastes were compared with reference samples based on standard methods. According to the results it was possible to verify that grits had a good performance and it might be directly tested industrially as an aggregate in road construction. On the other hand, dregs need to be treated before incorporation to guarantee stable mixes in terms of water sensitivity.
如今，废物的数量不断增加，这是一个令人担忧的现实，环境方面已成为当务之急。基于这种担忧，本实验研究的目的是探讨将纸浆和造纸无机废物（称为渣和砂粒）用作沥青混合物中的集料替代物以减少这些废物处置对环境的影响的可能性。首先，对废物进行了化学和物理特性分析，并主要根据沥青混合物中集料的要求进行了测试。然后，以不同的量用废物替代集料来制备配方。根据标准方法，比较了这些含有废物的混合物的力学性能与参考样品。根据结果，可以验证砂粒具有良好的性能，并且可以直接在工业上作为道路建设中的集料进行测试。另一方面，在掺入之前需要对渣进行处理，以保证在水敏性方面具有稳定的混合物。
