Table 46: Summary of projects evaluated (continued). Overlay HMA thickness- Bond State Roadway thickness, Observed distress panel size strength (psi) (in) (in:ftxft) Corner cracks in 3 % of the panels; Diagonal cracks in 2 % of the panels; Mainline of US-36, near Tuscola 3 to 4.25 N/A:5.5x5 N/A Long. cracks in 1 % of the panels; 1 % of cracks are reflective; Patching: 1 %. Highway-2, Cumberland County 3.5 5.75:5.5x6 N/A Reflection cracks in 1% of panels. Illinois 5:5.5x5.5 <1 % of slabs cracked in the 5.5-ft x Highway-4, County 4 and N/A 5.5-ft jt. layout;1 % of slabs cracked 5:11x11 in 11-ft x 11-ft jt. layout. WB: 2.5 2.5:2.95x3.85 US-36 and Country Club Road, Cracks in 70 % of panels. 50% cracks and and N/A Decatur developed in the first year. EB: 3.5 3.5:3.85x4.5 Min.: N/A 2:2x2, Max.: N/A 4:4x4, Ave.: 128 and IA-21 from US-6 to IA-212, south of Iowa 3 6:6x6, 165 for 3and 5 Localized failure. the City of Belle Plaine, Iowa County and respectively 8:12x12 St. dev.: N/A n = N/A Patterson Avenue, from 44th Street to Michigan 4.75 4:4x4 N/A Localized failure. 36th Street 5:6x6 US-69, North of Stringtown, Atoka N/A and N/A No distress. County 5:6 x 7 Oklahoma No distress in N.B. approach; Hairline 6:6x6 US-69, of McAlester, NB and SB long. cracks developed within a few 5 to 6 and N/A Lanes, McAlester, Pittsburg County weeks after construction in S.B.ound 7:6x7 approach.
Table 46: Summary of projects evaluated (continued). State Roadway HMA thickness, (in) Overlay thickness- panel size (in:ftxft) Bond strength (psi) Observed distress Illinois Mainline of US-36, near Tuscola 3 to 4.25 N/A:5.5x5 N/A Corner cracks in 3 % of the panels; Diagonal cracks in 2 % of the panels; Long. cracks in 1 % of the panels; 1 % of cracks are reflective; Patching: 1 %. Highway-2, Cumberland County 3.5 5.75:5.5x6 N/A Reflection cracks in 1% of panels. Highway-4, County 4 5:5.5x5.5 and 5:11x11 N/A <1 % of slabs cracked in the 5.5-ft x 5.5-ft jt. layout;1 % of slabs cracked in 11-ft x 11-ft jt. layout. US-36 and Country Club Road, Decatur WB: 2.5 and EB: 3.5 2.5:2.95x3.85 and 3.5:3.85x4.5 N/A Cracks in 70 % of panels. 50% cracks developed in the first year. Iowa IA-21 from US-6 to IA-212, south of the City of Belle Plaine, Iowa County 3 2:2x2, 4:4x4, 6:6x6, and 8:12x12 Min.: N/A Max.: N/A Ave.: 128 and 165 for 3and 5 respectively St. dev.: N/A n = N/A Localized failure. Michigan Patterson Avenue, from 44th Street to 36th Street 4.75 4:4x4 N/A Localized failure. Oklahoma US-69, North of Stringtown, Atoka County N/A 5:6x6 and 5:6 x 7 N/A No distress. US-69, of McAlester, NB and SB Lanes, McAlester, Pittsburg County 5 to 6 6:6x6 and 7:6x7 N/A No distress in N.B. approach; Hairline long. cracks developed within a few weeks after construction in S.B.ound approach.