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Table 6 Influence of pumping on compressive strength of the field applied FRC.

From: Evaluation on Protection Performance and On-Site Applicability of Hybrid Fiber-Reinforced Concrete

Experimental conditionsa Compressive strength (MPa)
7-day age 28-day age
The first test
 Before pumping 20.9 30.9
 After pumping 23.8 32.7
The second test
 Before pumping 21.8 31.0
 After pumping 24.2 33.1
  1. aThe fresh state concrete tests were conducted with the concrete mixture obtained from the randomly chosen agitator trucks: the first and fifth trucks arrived in the field were chosen.