01025042

Component

https://doi.org/10.3141/1976-14

http://scholar.google.com...nkey&publication_year=2006

This paper presents the findings from a research study that evaluated nondestructive test (NDT) methods that may be useful for quality assurance purposes during construction of soil nail retaining walls. More specifically, the new NDT procedure will be used to evaluate the integrity of the grout column surrounding the steel tendon and to measure the grouted length of the installed soil nail. A preliminary evaluation of the existing NDT methodologies was undertaken to identify candidate NDT methods. The selected NDT methods, sonic echo and impact echo, were subjected to a detailed evaluation through three series of full-scale field NDT testing. The findings from the sonic echo tests are presented in this paper. The field studies demonstrated that the sonic echo method can be used successfully to detect major defects in installed soil nails. The nail condition predictions from sonic echo tests were confirmed by actual nail conditions observed after all the soil nails were exhumed.

01039139

English

pp 104-113

2006

Transportation Research Record: Journal of the Transportation Research Board

0309099862

Print

Figures (7) ; Photos (10) ; References (15) ; Tables (1)

Crash tests; Defects; Field tests; Nondestructive tests; Quality assurance; Retaining walls; Soil nailing

Grout columns; Sonic echo tests

Bridges and other structures; Design; Geotechnology; Highways; Research; I24: Design of Bridges and Retaining Walls

TRIS, TRB, ATRI

Mar 3 2006 10:40AM

• Analysis and Instrumentation of a Steel Bridge for Investigation of Superload Effects
• Analysis of Masonry Bridges: Discrete Finite Element Method
• Changes in Hydraulic Roughness Coefficients for Circumferentially Strained M294 Pipe
• Comparison of Measured and Computed Stiffness of High-Density Polyethylene Pipe
• Cost-Effective, Structural Stay-in-Place Formwork System of Fiber-Reinforced Polymer for Accelerated and Durable Bridge Deck Construction
• Cyclic Performance of Precast Concrete Segmental Bridge Columns: Simplified Analytical and Finite Element Studies
• Design of Hammerhead Bent Cap to AASHTO Load and Resistance Factor Design Specifications
• Field and Laboratory Testing of Precast Concrete Channel Bridges
• Field Testing Serviceability Performance of Missouri’s First High-Performance Steel Bridge
• Field-Measured Natural Frequencies of Delaware Memorial Bridge
• Flexural Resistance Models for Concrete Decks Reinforced with Fiber-Reinforced Polymer Bars
• Influence of Residual Damage on Fatigue Performance of Heat-Straightened Steel Bridge Girders
• Integration of Information and Automation Technologies in Bridge Engineering and Management: Extending the State of the Art
• Limiting Slurry Pressures to Control Hydraulic Fracturing in Directional Drilling Operations in Purely Cohesive Soil
• New Inspection and Risk Assessment Methods for Metal Highway Culverts in Ohio
• Optimized Load and Resistance Factor Design of Prestressed I-Girder Bridge Superstructures with High-Strength Concrete
• Parametric Study of Influence of Profile Geometry on Structural Performance of Buried Profile-Wall Pipe
• Rapid Replacement of a Movable Steel Railway Bridge
• Seismic Performance of Reinforced Concrete Bridge Substructure Encased in Fiber Composite Tubes
• Seismic Vulnerability of Highway Bridge Embankments
• Static and Dynamic Testing of a Concrete T-Beam Bridge Before and After Carbon Fiber–Reinforced Polymer Retrofit