Trr No. 1448 Pavement Design, Management, And Performance, pp. 25-33
Deflection testing and backcalculation have been conducted on all types of concrete highway and airfield pavements for many years. Backcalculation of the in situ slab elastic modulus and the effective k-value or elastic solid subgrade modulus (beneath the slab) from deflection basins was first proposed by Westergaard in 1925 and actually conducted in the 1930s. Over the past decade, backcalcula…
Trr No. 1377 Pavement Design, Management, And Performance
Kttj Ke-4 - Vol. 3 : Perencanaan Dan Pelaksanaan, pp. 275-300