An investigation on the recycling of hydrated cement from concrete demolition waste
作者： D. Gastaldi , F. Canonico , L. Capelli , L. Buzzi , E. Boccaleri
DOI: 10.1016/J.CEMCONCOMP.2015.04.010
关键词: Clinker (waste) 、 Materials science 、 Natural materials 、 Fraction (chemistry) 、 Demolition waste 、 Waste management 、 Cement 、 Aggregate (composite)
摘要: Abstract Construction and demolition waste (CDW) recycling is generally limited to the use of coarser fraction as aggregate for new concrete. The recovery fine aggregates requires a cleaning by removing hydrated cement (HCW). In this paper, possibility HCW extracted from CDW alternative component production clinker explored. A pure sample was prepared used in partial replacement natural materials raw admixtures production. At degree 30%, Portland containing almost 50% C3S could be produced with huge spare release CO2 (about 1/3 less). higher dosage non-Portland 80% C2S has been obtained: its supplementary cementing material blended cements revealed satisfying long term performances.
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