USE OF MATURITY SENSORS TO PREDICT CONCRETE COMPRESSIVE STRENGTH IN DIFFERENT CURING AND COMPACTION REGIMES

Yasir Badawi, Amani Shamselfalah, Ali Elbadri, Doaa Badawi, M. Abdelazim, Rabab A. Wahid, Ali M. Ali, Yousif Ahmed

Abstract


Maturity method is a technique to account for the combined effects of time and temperature on the strength development of concrete. The method provides a relatively simple approach to estimate in-placed concrete strength. The purpose of this paper is to review basic concept of maturity, calculation methods & theories, focusing on using sensors at different
regimes (curing and compaction). Three groups of specimens were prepared, the first group was the controlled curing & compaction, the second was prepared with standard compaction but the curing was like curing in site (poor curing), the last group both compaction and curing were not standard. The results obtained from sensor compared with those from cube crushing test were acceptable in controlled group, but in the two other groups the results were inaccurate. Hence it was concluded that the maturity sensors will give results only in controlled conditions.


Keywords


Maturity; Strength; Poor Curing; Poor Compaction; Heat of hydration;Temperature Sensor;Hot weather concreting

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References


Samuel A. Wade, Anton K. Schindler, Robert

W. Barnes, Jeffery M. Nixon, “EVALUATION

OF THE MATURITY METHOD TO

ESTIMATE CONCRETE STRENGTH,”

Alabama Department of Transportation, 2006.

A. M. Neville, Properties of concrete, London:

Pearson Education Limited, 2011.

C. C. a. A. Australia, “Compaction of concrete,”

CCAA , Sydney, 2006.

W. H. PRICE, “Factors influencing concrete

strength,” Journal of American Concrete

Institute, vol. 32, no. 47, p. 417, 1951.

A. Gaffar, M. Kromer, M. A. Aljaki, “HOTWEATHER CONCRETING,” University of

Khartoum, Khartoum, 2012.

Saul, A.G.A.,, “Principles underlying the steam

curing of concrete at atmospheric pressure,”

Magazine of Concrete Research, vol. 2, no. 6, p.

, 1951.

J. McIntosh, “Electrical curing of concrete,”

Magazine of Concrete Reasearch, vol. 1, no. 1,

p. 21, 1949.

R. Nurse, “Steam curing of concrete,” Magazine

of Concrete Research, vol. 2, no. 1, p. 79, 1949.

J. Plowman, “Maturity and the strength of

concrete,” Magazine of Concrete Research, vol.

, no. 22, p. 13, 1956.

V.M. MALHOTRA, N.J. CARINO,

NONDESTRUCTIVE TESTING OF

CONCRETE, 2nd edition, Lodon: CRC press,

L.E. Copeland, D.L. Kantro, and G.Verbeck,,

“Chemistry of hydration of portland cement,” in

Fourth International Symposium on Chemistry

of Cement, Washington, D.C, 1962.

P. Freiesleben Hansen, E.J. Pedersen, Maturity

computer for controlled curing and hardening,

Nord: Betong, 1977.

J. Byfors, “Plain concrete at early ages,”

Swedish Cement and Concrete Research

Institute , 1980, 1980.

T. Naik, “Temperature Effects on Concrete,” in

Maturity functions for concrete cured during

winter conditions, ASTM STP 858, 1985, p.


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