01622789

Component

https://doi.org/10.3141/2629-13

The use of nondestructive testing (NDT) techniques to estimate concrete in-place strength has been broadly studied, with proof of their usefulness in complementing destructive testing (DT). However, the use of DT techniques still dominates. The main objective of this investigation was to compare the performance of three NDT techniques—the rebound hammer, Nitto hammer, and pullout tests—to determine in-place strength. NDT-versus-strength correlation curves were fit to data measured from thick concrete slabs. Strength was measured from cast-in-place cylinders. Analyses of NDT sensitivity, uncertainty, and variability are presented. A new parameter to quantify the performance of the NDT techniques is proposed. This parameter is the limit error between the measured and estimated strengths, which combine uncertainty and variability analyses. The analysis shows that the least limit error for predicting in-place strength was achieved by the rebound hammer test when one testing location was considered or by the pullout test for two or more testing locations.

01632439

17-04576

English

pp 104–111

2017

Transportation Research Record: Journal of the Transportation Research Board

9780309441827

Digital/other

Figures (6) ; Photos; References (7) ; Tables (3)

Alternatives analysis; Cast in place concrete; Compressive strength; Cylinders (Geometry); Metrics (Quantitative assessment); Nondestructive tests; Random sampling; Uncertainty

Bridges and other structures; Construction; Highways; Materials; Pavements

PRP, TRIS, TRB, ATRI

Dec 8 2016 11:45AM

• Development of a Specification for Low-Cracking Bridge Deck Concrete in Virginia
• Effect of Specimen Size and Curing Condition on the Compressive Strength of Alkali-Activated Concrete
• Evaluation of Self-Healing Efficiency of Reinforced Concrete Beams with Calcium Nitrate Microcapsules
• Investigation of Properties of High-Performance Fiber-Reinforced Concrete: Very Early Strength, Toughness, Permeability, and Fiber Distribution
• Laboratory Evaluation of Sound Absorption Characteristics of Pervious Concrete Pavement Materials
• Mitigation of Alkali–Silica Reaction by Hydrated Alumina
• Relationships Between Structural, Functional, and X-Ray Microcomputed Tomography Parameters of Pervious Concrete for Pavement Applications
• Risk of Thermal Cracking from Use of Lightweight Aggregate in Mass Concrete
• Role of Ground Glass Fiber as a Pozzolan in Portland Cement Concrete
• Should Minimum Cementitious Contents for Concrete Be Specified?
• Use of Fly Ash to Minimize Deicing Salt Damage in Concrete Pavements