Performance of Bituminous Mixes Containing Emulsion-Treated Recycled Concrete Aggregates

Mechanical Performance of Gilsonite Modified Asphalt Mixture Containing Recycled Concrete Aggregate

“…For these reasons, several studies have been carried throughout the world to evaluate the use of RCAs as a substitute for NAs. Some factors that limit the use of RCAs are (i) the need for using large spaces for their storage; (ii) experience in residue recycling operations, supervisors, and trained personnel are all required; (iii) it requires knowledge about waste material markets; and (iv) it requires a high degree of awareness regarding environmental and safety regulations [43].…”

“…To reduce asphalt consumption and improve the properties of RCAs, some studies have conducted pre-treatment for these materials. For example, some studies have covered RCA particles with a slag cement paste [66], bitumen emulsion [43,67], silane-based water repellent agents [68], or a carbonation technique [69]. Others have applied combined coating techniques with additives such as Tite-BE and heating [46], while others have attempted to mechanically eliminate the adhered mortar [70].…”

Industrial Wastes as Filler in Bituminous Materials for Construction Industry: Toward Circular Economy

“…Bituminous materials such as asphalt make a large part of materials used in construction, and there are already many published results related to the utilization of industrial waste as filler in bituminous materials. − Also, there are several research articles which point out that some industrial wastes and byproducts could be utilized in the production of stone mastic asphalt. − Some research reports have presented the investigation results of potential waste materials as substitute for the filler from the asphalt mixtures including fly ash and slag, recycled concrete powder, cement kiln dust, waste glass, brick powder, rice husk ash, coal waste powder, oil shale, waste bleaching clay, paper industry wastes, recycled waste lime, phosphate waste filler, municipal solid waste incineration ash, baghouse fines, oil shale fly ash, waste ceramic materials, waste marble materials, − and waste tires. , …”

“…Besides the large amount in which it is produced, a major problem is in handling stone dust as it poses a major health hazard upon inhalation. A few studies have been done so far regarding its incorporation in construction materials, such as asphalt concrete, − geopolymers, or cement. , …”