Study on the Cement Asphalt Emulsion Stabilization Material Using Concrete Waste

In recent years, many concrete waste materials have been generated every year in Japan. The total amount is ten million tons per year and the amount is to be remained at the same level. These concrete wastes are reused as recycled underlying base course material (RC-40) in the paving construction process. However, most part of the pavement maintenance repair has been done for the surface base layer and underlying base has not been reconstructed. Concrete waste has not been recycled and it tends to be surplus recently. Therefore, the authors focused on the recycling of concrete waste as a material for the cement asphalt emulsion stabilization (CAE). In this way, concrete waste turns into a material that is more value-added. Various laboratory experiments for the CAE material using concrete waste have been performed. In the results, this material shows almost same properties as general CAE by in-place base course recycling. Furthermore, the plant for manufacturing the CAE was built in order to verify practicality. Results of the field test, this material showed good performance. The Great East Japan Earthquake occurred in March 2011 caused road cracking, splitting level of road and liquefaction. Field investigation shows that CAE base course road had less damage compared to granular material or cement stabilization base course road. In the laboratory, the results of shaking experiment simulating earthquake indicated that CAE material have cracking resistance and reduce the damage caused by liquefaction. Additionally, the CAE material was used in pavement for disaster recovery. The temporary plant was built to manufacture the CAE in the place which has damage by earthquake. The recycled materials that generated from quake hit area have been used for the CAE. The recovery pavement indicated that the CAE material have great performance and heavy traffic resistance for surface layer pavement.

Language

  • English

Media Info

  • Media Type: Web
  • Features: Figures; Photos; References; Tables;
  • Pagination: 13p
  • Monograph Title: Proceedings of the 25th World Road Congress - Seoul 2015: Roads and Mobility - Creating New Value from Transport

Subject/Index Terms

Filing Info

  • Accession Number: 01689026
  • Record Type: Publication
  • ISBN: 9782840604235
  • Files: TRIS
  • Created Date: Dec 12 2018 2:35PM