Feasibility of Using Unbound Mixed Recycled Aggregates from CDW over Expansive Clay Subgrade in Unpaved Rural Roads.

摘要: Social awareness aims to increase practical skills, such as sustainable development, which seeks the use of different types waste in construction activities. Although insufficient attention is sometimes given these actions, it essential spread information regarding new studies field recycling, encourages and promotes use. Reusing recycling creation buildings infrastructure are fundamental strategies achieving sustainability engineering sectors. In this context, concept would no longer exist, become a material resource. Therefore, study analyses behaviours two unbound mixed recycled aggregates (MRA) structural layers an unpaved rural road with low traffic (category T43). The sections were built on inappropriate soil (A-7-6) high degree free swelling. experimental consisted three sections: first was made natural (NA) that used control, second composed MRA subbase NA base, third section completely MRA. materials characterised laboratory. determined by controlling compaction (“in situ” density moisture) measuring deflections load capacity (deflectometer) during 18 months after construction. results show meet technical specifications required General Technical Specifications for Road Bridge Works (PG-3). water-soluble sulphate content Los Angeles abrasion coefficient limits can be increased without compromising quality type traffic. To best our knowledge, from demolition (CDW) expansive clay subgrade.