Texturing of Concrete Pavements (2009) / Chapter Skim
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From page 27... ...
Details of the subject project and the construction of the various test sections are provided in the following sections. Project Overview The PCC paving project selected for constructing and testing the selected surface textures was the South Extension of the I-355 North-South Tollway between I-55 and I-80 near Joliet, Illinois.
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Pre-Texture/ Secondary Texture None None Turf Drag Turf Drag Turf Drag Burlap Drag Turf Drag Burlap Drag Burlap Drag Texture Tining Diamond Grinding Tining Tining Tining Grooving Grooving Tining Tining Direction Longitudinal Longitudinal Longitudinal Meander Longitudinal Longitudinal Longitudinal Longitudinal Transverse Transversec Spacing, in.
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. Sand patch tests were conducted on heavy turf drag sections within 2 days after placement to check the mean texture depth (MTD)
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349+67 (Rt 7/159 th ) 5/15/07 -- PCC Paving w/ Burlap Drag & Random Tran Tine Tx #10 -- Burlap Drag + Random Tran Tine 321+25 322+92 300+03 5/21/07 -- PCC Paving w/ Burlap Drag & Tran Tine Tx #11 -- Burlap Drag + 1-in Tran Tine 5/22/07 -- PCC Paving w/ Burlap Drag & Tran Tine Tx #2 -- No Pretexture + 0.75-in Long Tine 272+92 241+97 5/23/07 -- PCC Paving w/ Heavy Turf Drag & Long Tine Tx #5b -- Heavy Turf Drag + 0.75-in Long Tine 256+00 5/23/07 -- PCC Paving w/ Turf Drag & Long Tine Tx #5a -- Std Turf Drag + 0.75-in Long Tine TOLL PLA ZA 5/23/07 -- PCC Paving w/ Heavy Turf Drag Tx #1b -- Heavy Turf Drag (mod)
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Turf drag pretexture and longitudinal tining created using (a) 24-ft wide by 4-ft long polyethylene turf mat (unweighted)
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Turf drag pretexture and transverse tining created using (a) 24-ft wide by 4-ft long polyethylene turf mat (unweighted)
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Figure 4-7. Heavy turf drag finish (Section 1b)
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Longitudinal tine with heavy turf drag pretexture (Section 5b)
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Multiple test runs were made with each setup on two different test sections. The overall average difference in SI measurements was insignificant (0.1 dB(A)
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(276+32 to 279+92 OSL) Texture 5b Heavy Turf Drag + 0.75-in Long Tine (272+50 to 267+50 CL)
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229+42 Em ba nk Texture 7 Burlap Drag + Long Groove (227+11 to 232+39 CL) Texture 8 Std Turf Drag + Long Groove ( 201+96 to 207+24 OS L )
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Table 4-4 lists the mean texture values for each test section, based on measurements from both the right wheelpath and the lane center, the mean micro-texture and friction values measured for each section, and the mean noise levels, as measured at the pavement–tire interface, in the vehicle interior, and at the side of the road. (Detailed results are presented in Appendix D.)
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From page 39... ...
4 Sand patch tests conducted on heavy turf drag textures (after hardening of the PCC) yielded average MTD values of 0.023 in.
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