Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Thickness Design of PCC/FBC Composites for Secondary/County Roads
Tests were conducted in the laboratory and field to determine the extent to which fluidized bed combustion (FBC) spent bed and pulverized coal combustion (PCC) fly ash, by products of the coal industry, can be used in low-volume county and secondary roads. Various proportions of prehydrated FBC spent bed (as a secondary aggregate and an agent to activate pozzolan oxides), PCC fly ash (as a primary cementitious binder), natural fine aggregate (as a primary filler), and a low dosage of Portland cement (as a secondary cementitious compound) were blended and compacted at their optimum moisture content to ascertain their suitability as base course materials. These tests and experiments were used to assess the performance of the selected PCC/FBC base course composites. On the basis of the results, thickness-design tables of PCC/FBC base courses were developed. Results indicate that the engineering properties of the PCC/FBC composites exceed those of the conventional mixes used in low-volume roads. The field results verified that the engineering characteristics of the laboratory mixtures can be easily duplicated in field.
Thickness Design of PCC/FBC Composites for Secondary/County Roads
Tests were conducted in the laboratory and field to determine the extent to which fluidized bed combustion (FBC) spent bed and pulverized coal combustion (PCC) fly ash, by products of the coal industry, can be used in low-volume county and secondary roads. Various proportions of prehydrated FBC spent bed (as a secondary aggregate and an agent to activate pozzolan oxides), PCC fly ash (as a primary cementitious binder), natural fine aggregate (as a primary filler), and a low dosage of Portland cement (as a secondary cementitious compound) were blended and compacted at their optimum moisture content to ascertain their suitability as base course materials. These tests and experiments were used to assess the performance of the selected PCC/FBC base course composites. On the basis of the results, thickness-design tables of PCC/FBC base courses were developed. Results indicate that the engineering properties of the PCC/FBC composites exceed those of the conventional mixes used in low-volume roads. The field results verified that the engineering characteristics of the laboratory mixtures can be easily duplicated in field.
Thickness Design of PCC/FBC Composites for Secondary/County Roads
Ghafoori, Nader (Autor:in) / Nyknahad, Dara (Autor:in) / Wang, Li (Autor:in)
Journal of Transportation Engineering ; 138 ; 998-1005
10.01.2012
82012-01-01 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Thickness Design of PCC/FBC Composites for Secondary/County Roads
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