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http://dx.doi.org/10.14190/JRCR.2019.7.4.358

Estimation of Setting Time of Concrete Using Rubber Hardness Meter  

Han, Min-Cheol (Department of Architectural Engineering, Cheongju University)
Han, In-Deok (Department of Architectural Engineering, Jeju National University)
Shin, Yong-Sub (Department of Architectural Engineering, Cheongju University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.7, no.4, 2019 , pp. 358-366 More about this Journal
Abstract
The purpose of this study is to explore the possibility of estimating optimum surface finishing work time of the fresh concrete placed at the job site by applying a surface hardness test meter(Durometer). Tests are carried out by measuring and comparing the Proctor penetration resistance test and hardness test by Durometer. Correlations between Procter penetration test and hardness test by Durometer were obtained. Two different types Durometer were applied to estimate setting time. Test results indicate that the measurement of the Durometer and the test of the Proctor penetration resistance are highly correlated. When measuring the initial setting time with Durometer, initial setting time is reached when the hardness value by the type C Durometer is reached around 42HD, and when final setting is measured with the type D Durometer, the surface finishing work time limit and curing time can be estimated with 10HD of Durometer.
Keywords
Initial set; Final set; Setting time; Durometer; Proctor penetration resistance tester;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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