Life Cycle Analysis of High Quality Recycled Aggregate with Use of Byproduct Powder as Soil Stabilizer
By Hirokazu Shima, Hisashi Tateyashiki, Ryuji Matsuhashi and Yoshikuni Yoshida
Concrete Research and Technology
Vol.15, No.1, Jan 2004 (Issue 34)
- Synopsis:
- The life cycle analysis of high quality recycled aggregate made from demolished concrete by heating and rubbing was carried out. In order to evaluate the applicability of the fine powder produced during the recycled aggregate production as a soil stabilizer, the uniaxial compressive strength of some soil was examined when the cement soil stabilizer and the classified fine powder are added to the soil. As a result, the life cycle CO2 is a negative value because the evaluated deduction of CO2 emission of cement soil stabilizer manufacturing by the powder is larger than that of the recycled aggregate production. This technology is proved to be very effective to reduce CO2.
- Keywords:
- life cycle analysis, recycled aggregate, fine powder, soil stabilizer, concrete, recycle, heating and rubbing
