A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
New developments with cold asphalt concrete binder course mixtures containing binary blended cementitious filler (BBCF)
Highlights The development of a green cold asphalt mix using waste products. A novel CACB mixture established using a new BBCF. HCFA activated by a FC3R improved the properties of the CACB mixture. The mechanical properties and durability of the novel CACB established as comparable to those of the HMA. The formation of hydration products provided an explanation for the improvement in mechanical properties.
Abstract A weakness in early strength and the need for longer curing times in the case of cold bituminous emulsion mixtures (CBEMs) compared to hot mix asphalt have been cited as barriers to the wider utilization of these mixtures. A binary blended filler material produced from high calcium fly ash (HCFA) and a fluid catalytic cracking catalyst (FC3R) was found to be very effective in providing microstructural integrity with a novel fast-curing cold asphalt concrete for the binder course (CACB) mixture. Balanced oxide compositions within the novel filler were identified as responsible for an enhanced hydration reaction, resulting in a very high early strength and a significant improvement in permanent deformation and fatigue resistance. Improved water sensitivity for progressive hydration with the new binary filler was also established while SEM analysis confirmed the formation of hydration products after various curing ages.
New developments with cold asphalt concrete binder course mixtures containing binary blended cementitious filler (BBCF)
Highlights The development of a green cold asphalt mix using waste products. A novel CACB mixture established using a new BBCF. HCFA activated by a FC3R improved the properties of the CACB mixture. The mechanical properties and durability of the novel CACB established as comparable to those of the HMA. The formation of hydration products provided an explanation for the improvement in mechanical properties.
Abstract A weakness in early strength and the need for longer curing times in the case of cold bituminous emulsion mixtures (CBEMs) compared to hot mix asphalt have been cited as barriers to the wider utilization of these mixtures. A binary blended filler material produced from high calcium fly ash (HCFA) and a fluid catalytic cracking catalyst (FC3R) was found to be very effective in providing microstructural integrity with a novel fast-curing cold asphalt concrete for the binder course (CACB) mixture. Balanced oxide compositions within the novel filler were identified as responsible for an enhanced hydration reaction, resulting in a very high early strength and a significant improvement in permanent deformation and fatigue resistance. Improved water sensitivity for progressive hydration with the new binary filler was also established while SEM analysis confirmed the formation of hydration products after various curing ages.
New developments with cold asphalt concrete binder course mixtures containing binary blended cementitious filler (BBCF)
Dulaimi, Anmar (author) / Al Nageim, Hassan (author) / Ruddock, Felicite (author) / Seton, Linda (author)
Construction and Building Materials ; 124 ; 414-423
2016-07-23
10 pages
Article (Journal)
Electronic Resource
English
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