concrete delamination Topic The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, certification programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete
Detecting Delamination in Concrete Bridge Decks Infrared thermography has been found capable of detecting delamination because there is a difference in the surface temperature of sound and delaminated concrete under certain atmospheric conditions The paper describes the equipment and the factors affecting the infrared imagery when used at ground level and from the air
Bridge Deck Evaluation with Non-Destructive Testing 3 Delamination of deck concrete Independent appraisal The delamination ratio of λ = 40% was, then, applied to the GPR map of another bridge (F-20-BQ) on the interstate highway I-70 The patch-repaired area was 1067 ft2 (99 m2) The area of deterioration (delamination) was quantified to be 2898 ft2 (269 m2) and 498 ft2 (46 m2) by GPR
Air Entrainment and Delaminations - American Concrete Institute Recently, the construction industry has given considerable attention to distress of concrete slab surfaces—namely blistering and delamination In the analyses of slab delaminations to date, most view air entrainment as one of many variables that can affect the entrapment of bleed water
topicdetail - American Concrete Institute The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, certification programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete
Concrete Q A air content attributed to delamination And the risk jumps with each percent increase, such that at 6% air content is very risky, and at air contents above 8%, it’s nearly impossible to avoid creating blisters and or delaminations I’ve seen concrete with 12 and 13% air—the finishers didn’t have a chance to finish it safely
ndt testing for aci j donnelly - American Concrete Institute delamination FINDINGS Chain Drag Sounding • Identified cracks, delaminations, and other surface defects in combination with visual survey • When compared to findings from 29 core locations, delamination identification was 93% accurate (Two false negatives ) Chain Drag Sounding • Requires lane closures