Title:
Slab-on-Ground Thickness Measurement
Author(s):
Lingfeng (Leo) Zhang, James Klinger, and Bruce A. Suprenant
Publication:
Concrete International
Volume:
44
Issue:
7
Appears on pages(s):
37-49
Keywords:
average, tolerance, accuracy, calibration
DOI:
10.14359/51735988
Date:
7/1/2022
Abstract:
ACI 117-10(15) provides tolerances for core test and impact-echo thickness measurements. These measurement techniques as well as laser scanning and ground-penetrating radar were used to collect thickness data from a slab-on-ground test panel. The data was then analyzed to determine appropriate average and individual thickness tolerances for all these test methods.
Related References:
1. Zhang, L.; Klinger, J.; and Suprenant, B.A., “F-numbers and Textured Concrete Surface Finishes,” Concrete International, V. 44, No. 5, May 2022, pp. 33-41.
2. Joint ACI-ASCC Committee 117, “Specification for Tolerances for Concrete Construction and Materials (ACI 117-10) and Commentary (ACI 117R-10) (Reapproved 2015),” American Concrete Institute, Farmington Hills, MI, 2010, 76 pp.
3. Rister, B.; Creech, J.; and Ashurst Jr., K.H., “Determination of Constructed Pavement Layer Thickness Using Nondestructive Testing,” Research Report KTC-19-05/SPR17-359-1F, Kentucky Transportation Center, Lexington, KY, Apr. 2019, 20 pp.
4. “2021 International Building Code®,” International Code Council, Inc., Washington, DC, 2020, 832 pp.
5. Irwin, L.H.; Yang, W.S.; and Stubstad, R.N., “Deflection Reading Accuracy and Layer Thickness Accuracy in Backcalculation of Pavement Layer Moduli,” ASTM STP 1026, ASTM International, West Conshohocken, PA, 1989, pp. 229-244.
6. Willett, D.A., and Rister, B., “Ground Penetrating Radar ‘Pavement Layer Thickness Evaluation’,” Research Report KTC-02-29/FR101-00-1F, Kentucky Transportation Center, Lexington, KY, Dec. 2002, 30 pp.
7. Al-Qadi, I.L.; Lahouar, S.; and Loulizi, A., “Successful Application of Ground-Penetrating Radar for Quality Assurance-Quality Control of New Pavements,” Transportation Research Record, V. 1861, No. 1, Jan. 2003, pp. 86-97.
8. Al-Qadi, I.L.; Lahouar, S.; Jiang, K., “Analysis Tool for Determining Flexible Pavement Layer Thickness at Highway Speeds,” Transportation Research Board 85th Annual Meeting Compendium of Papers CD-ROM, Washington, DC, 2006, 15 pp.
9. Holzschuher, C.; Lee, H.S.; and Greene, J., “Accuracy and Repeatability of Ground Penetrating Radar for Surface Layer Thickness Estimation of Florida Roadways,” Research Report FL/DOT/SMO/07-505, Florida Department of Transportation, Tallahassee, FL, Apr. 2007, 26 pp.
10. Sansalone, M.J., and Streett, W.B., Impact-Echo: Nondestructive Evaluation of Concrete and Masonry, Bullbrier Press, Ithaca, NY, and Jersey Shore, PA, 1997, 339 pp.
11. Azari, H., “Precision Estimates of AASHTO T148: Measuring Length of Drilled Concrete Cores,” NCHRP Web-Only Document 165, 2010, 21 pp., http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_w165.pdf. (last accessed June 10, 2022)