Quantification of Effective Flow Resistivity for Parametric Assessment of Pervious Concrete by Using Ultrasonic Pulse Velocity Method

The use of nondestructive ultrasonic pulse velocity (UPV) testing to assess the hardened properties of pervious concrete (PC) mixtures is an emerging research area. Further, UPV has been successfully used to determine the effective flow resistivity (EFR) of asphalt concrete and cement concrete pavements. However, no research studies have...

Relationships Between Non-Destructive Measurements and Mechanical Properties of Tropical Hardwoods

There are more than 1000 wood species worldwide available that have the potential to be used in structural applications. Many of these species are tropical hardwood species. In this paper, the mechanical and physical properties of a large number of tropical hardwoods are presented. They are investigated for relationships that are valid for all...

Species independent strength modeling of structural timber for machine grading

The current methods for the determination of the strength properties for wood species for grading purposes require extensive testing. Species independent grading might be a solution for this problem, in particular for tropical hardwoods. The strength reducing characteristics such as knots and slope of grain...

Basic research on the self-healing functions of concrete mixed with fly ash

In recent studies, it has been recognized that concrete deterioration is accelerated by the growth of fine cracks of a few micron meters in width induced by dry shrinkage and/or freezing damage. There have been great expectations for research on concrete that self-heals these fine cracks. Recent research (for example, Taniguchi et al. in the 3rd...