Environmental Accounting on Treatment and Reutilization of Construction Sludges in Geotechnical Engineering Fields

Life Cycle Assessment on Recycling of Construction Sludges in Geotechnical Engineering Fields

“…Therefore, when recycled material from construction sludge that can contain environmentally hazardous substances is used, it must be confirmed that such hazardous substances are not eluted from the recycled material, or that the elution level of the hazardous substances are within an environmentally acceptable range [7]. For your information, previous study by Inazumi et al [8] has showed the usefulness of recycling decreased quantitatively by considering a process delay in processing for recycling owing to unstable supply of construction sludge as well as a variance in the period required for processing for recycling.…”

“…Therefore, for mining mineral resources, environmental cost is defined as shown in Eq. (8). (8) Meanwhile, as for mining soil and stone resources, although they cannot be regarded as unlimited, because various legal regulations related to natural conservation restrict the available amount, it is difficult to consider in terms of stock reduction of resources, because these resources are usually used for additional soil, backfilling and land formation.…”