English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

High early-strength concrete are commonly used for reinforced bulk/mass concrete foundations of structures. Based on the temperature measurements for an actual project, it was found out that even after implementing the necessary countermeasures, the recorded temperatures exceeded the threshold values recommended by the American Concrete Institute specifications. Thus, these mass concrete are usually subjected to isothermal curing. The study aims to evaluate high-early strength concrete subjected isothermal curing using linear and nonlinear ultrasonics. These ultrasonic evaluation techniques include ultrasonic pulse velocity test, scaling subtraction method, and harmonic generation method. Ultrasonic tests were conducted to concrete specimens before and after subjecting them to compression loading using the universal testing machine. Comparison between the results of normally cured specimens and isothermally cured specimens were made. Test results showed that the damages in the isothermally cured specimens were more apparent than that in the normally cured specimens. Therefore, it was proven that control measures are required to prevent or reduce the progression of damage due to isothermal curing.

Ultrasonic Evaluation of High-Early Strength Concrete Subjected to Isothermal Curing