Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation of Air-Void System in PCCP (Portland Cement Concrete Pavement) with Different Nominal Sizes of Coarse Aggregate
Air-void system characteristics were determined for six sections of PCCP. Each section had a different concrete mix design, including those recently adopted for areas of the state with D-cracking problems. Maximum size of coarse aggregate and percentage of sand were major variables. Average air-void spacing factors were greater than ACI recommendations of less than 0.008 inches in all test sections. Low air content of fresh concrete and consolidation problems with mixes having fineness modulus of combined aggregate below 5.0 were main reasons for high spacing factors.
Evaluation of Air-Void System in PCCP (Portland Cement Concrete Pavement) with Different Nominal Sizes of Coarse Aggregate
Air-void system characteristics were determined for six sections of PCCP. Each section had a different concrete mix design, including those recently adopted for areas of the state with D-cracking problems. Maximum size of coarse aggregate and percentage of sand were major variables. Average air-void spacing factors were greater than ACI recommendations of less than 0.008 inches in all test sections. Low air content of fresh concrete and consolidation problems with mixes having fineness modulus of combined aggregate below 5.0 were main reasons for high spacing factors.
Evaluation of Air-Void System in PCCP (Portland Cement Concrete Pavement) with Different Nominal Sizes of Coarse Aggregate
1987
24 pages
Report
Keine Angabe
Englisch