This paper reports a laboratory implementation of a prototype sensor for the measurement of in situ concrete static modulus of elasticity. Sensor measurements for a trial concrete mixture were generated, post-processed, and calibrated to best match companion ASTM C469 modulus of elasticity testing performed on the same mixture for concrete ages up to 28 days. The sensor prototype measurements demonstrated close agreement with ASTM C469 testing with approximately 90% of calibrated sensor prototype measurements within ±5% of companion testing. The initial sensor prototype implementation reported in this study affirms the feasibility of in situ concrete modulus of elasticity measurement and justifies further sensor development and implementation efforts.
A. M. Neville, Properties of Concrete (Dorling Kindersley, New Delhi, India, 2013).
ASTM C39, Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens (ASTM International, West Conshohocken, PA, 2020).
ASTM C469, Standard Test Method for Static Modulus of Elasticity and Poisson’s Ratio of Concrete in Compression (ASTM International, West Conshohocken, PA, 2014).
D. M. Mante, Measuring Concrete Modulus of Elasticity. Concrete International (American Concrete Institute, Farmington Hills, MI, 2019), Vol. 41: Issue 8.
ACI Committee 228, Report on Nondestructive Test Methods for Evaluation of Concrete in Structures (ACI 228.2R-13) (American Concrete Institute, Farmington Hills, MI, 2013).
A. E. Naaman, Prestressed Concrete Analysis and Design: Fundamentals, 2nd ed. (Techno Press 3000, Ann Arbor, MI, 2004).
Geokon, Model 4200 Series Vibrating Wire Strain Gauges Instruction Manual. Document Revisions: DD (Geokon, Lebanon, New Hampshire, 2019).
ACI Committee 209, Prediction of Creep, Shrinkage, and Temperature Effects in Concrete Structures (ACI 209R-92) (American Concrete Institute, Farmington Hills, MI, 2008).
A. F. Siegel, Practical Business Statistics, 6th ed. (Elsevier Inc, Burlington, MA, 2012), p. 317.
ACI Committee 209, Guide for Modeling and Calculating Shrinkage and Creep of Concrete (ACI 209.2R-08) (American Concrete Institute, Farmington Hills, MI, 2008).
19 Page Views
0 PDF Downloads
0 Facebook Shares