Abstract:
Maintenance highway rigid pavement can cause a significant impact on
traffic congestion due to the lack of the traffic lane. Typically, the general maintenance
plans are arranged from midnight to early morning before the morning peak
traffic periods to mitigate the possibility of traffic congestion. As a result, to open
to traffic, the maintenance highway rigid pavement usually requires the concrete
to meet a compressive strength requirement of 210 kgf/cm2 after 4–6 h. The high
early strength mix design (S-mix design) is examined and published by the Taiwan
Freeway Bureau,MOTC. However, this research shows that the S-mix design’s early
compressive strength is significantly affected by the exterior temperature. Therefore,
it is practically important to control the temperature at the early ages of the concrete.
In addition, the maturity method and rebound hammer test results can be used to
evaluate high early compressive strength of the construction site. Due to the rigid
pavement requires high early compressive strength in a short period of time, taking the
specimen to the laboratory to conducting the compressive strength test is challenging.
Thus, using the rebound hammer result to simulate the hydraulic compressive testing
value is one of the suitable method for evaluating high early compressive strength
