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Home > Publications > International Concrete Abstracts Portal
Showing 1-2 of 2 Abstracts search results
Document:
109-S23
Date:
March 1, 2012
Author(s):
Levent Selcuk, H. Suleyman Gokce, Kamil Kayabali, and Osman Simsek
Publication:
Structural Journal
Volume:
109
Issue:
2
Abstract:
This study presents a practical nondestructive testing (NDT) method: the nail penetration test (NPT). The major tools of the test technique are a gas nailer with 130 J (95.88 ft-lbf) power, concrete nails, and a gas nailer cell. The study covers three different limestone aggregate types. Six concrete mixtures were prepared from each aggregate type. Five nail shots were performed on each concrete mixture (or grade) and the average value was obtained. The average nail penetration depths were correlated with the compressive strength of concrete. Other NDT techniques, such as the Schmidt rebound hammer (SRH), ultrasonic pulse velocity (UPV), and Windsor probe (WP), were also applied to concrete samples. The measured compressive strength values were compared with those obtained from the empirical relationships using the data from the NPT, SRH, UPV, and WP. It was found that the reliability of the NPT to estimate the compressive strength of concrete is very high. The tool employed in the investigation covers a relatively wide range of compressive strength of concrete. This testing tool is proposed to estimate the compressive strength of in-place concrete.
DOI:
10.14359/51683635
96-M55
July 1, 1999
Akthem A. Al-Manaseer and Emma B. Aquino
Materials Journal
96
4
The objective of this study is to evaluate the use of the Windsor probe test (ASTM C 803) to nondestructively determine the in situ compressive strength of normal and high-strength concrete. Tests were performed on 11 mixes with strength varying between 2240 and 18,820 psi (15 and 130 MPa). Two types of probes were utilized. The probes were made of a special high-strength alloy steel and had similar dimensions. For stress relief purposes, one probe type was baked for 3-1/2 hr while the other type was baked for 7 hr. The Windsor probe test was found successful in predicting the in situ compressive strength of normal and high-strength concrete up to 17,080 psi (120 MPa).
10.14359/644
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