PaintSquare.com


The First Word in Protective & Marine Coatings

A Product of Technology Publishing / PaintSquare
JPCL | PaintSquare News | Durability + Design | Paint BidTracker

Get Paint BidTracker's Bridge Painting Opportunities of 2015

Problem Solving Forum

| More

May 21 - May 27, 2012

What tests should be run to determine if an existing concrete bridge pier needs rehabilitation or repair before cleaning and coating?


Selected Answers

From Jeremi Day of Allphaz Inspection Services on May 22, 2012:
     There are several non-destructive tests (NDT) that can be used to evaluate the strength of hardened concrete. Two of the most common NDT methods are the Schmidt rebound hammer and the Windsor probe, both of which measure the surface hardness of concrete as a quick indicator of relative compressive strength. The rebound hammer test (ASTM C 805) measures the rebound of a spring-loaded plunger pressed against a concrete surface. The harder the surface, the greater the extent of the rebound, which correlates to relatively greater strength. In the Windsor probe test (ASTM C 803), a powder-actuated gun drives hardened alloy probes into the concrete. The exposed length of the probe is measured, then related by a calibration table to the concrete's compressive strength. The results of these tests can be influenced by a variety of factors, including surface smoothness, type and hardness of aggregates, age and moisture condition of the concrete, and the degree of carbonation at the surface. Therefore, it's important that results be compared with those from cored or cast specimens, and interpreted by NDT specialists who understand the limitations of the tests.

From Otto Drozd of J. Mori Painting, Inc on May 23, 2012:
     Conduct a visual inspection of the surface to be coated to determine if any of the following are present: voids, bugholes, pop-outs, cracks, joints, spalls, fins/slivers, levelness , efflorescence, soundness, oil, grease,wetness/dryness, carbonation, chemical, ASR/AAR, transition areas below/above grade, age of concrete, blisters/other.  Evaluate  the severity of the damage detected and determine if it is critical that rehabilitation work be done.

Please sign in to submit your answer this question    

Tagged categories: Bridges; Concrete; Concrete repair; Site/field testing


Current PSF Question | Submit a PSF Question | Full PSF Archive

SAFE Systems, Inc.
SAFE Systems'
Blast Lights &
Deadman Switches

Halogen or LED blast lights available with our NEW urethane bumper. Switches available in many colors for color coding your hoses.


Corrosion Probe, Inc.
From Detection to Correction

Corrosion Probe, Inc. has the Most Concrete Coatings Experience and Expertise. Contact us today at
860-767-4402, www.cpiengineering.com


Minerals Research & Recovery

HIGH PERFORMANCE ABRASIVES


“Made in the USA!”

Why recycle waste from other countries? Go FASTER, CLEANER, at 1/3 THE COST with MR&R “All-American” Sharpshot®HP!!

WATCH THE VIDEO


Atlantic Design, Inc.
POWER ON WITH ADI!

The most air flow possible… In the smallest package imaginable… For a price you won’t believe! 866.Call.ADI


Simpson Strong-Tie
Repair, Protect & Strengthen

Need a coating? Turn to Fox. We have solutions to repair, protect and strengthen concrete, steel and wood substrates. Call 888-760-0369 or email info@foxind.com


Spider, a Division of SafeWorks, LLC
Spider Solutions Catalog

The industry’s only 280-page catalog resource includes:
• in-depth product info
• 21 case studies
• safety & inspection
  checklists
• codes & regulations
Click to request a copy!


Absolute Equipment/Grand Rental Station
Portable Power from Absolute Equipment

•Compressors
•Lighting Systems
•Generators
•Light Compaction
Sales • Rental • Service
Call 1-866-931-6655
Over a century of
providing excellence.

 
 
 
Technology Publishing

The Technology Publishing Network

The Journal of Protective Coatings & Linings (JPCL) PaintSquare
Durability + Design Paint BidTracker JPCL Europe

 
EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About PaintSquare.com   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us
 

© Copyright 2000-2014, Technology Publishing / PaintSquare, All rights reserved
2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail webmaster@paintsquare.com