Closed-Form and Semi-Closed-Form Algorithms for Backcalculation of Concrete Pavement Parameters

Closed-Form and Semi-Closed-Form Algorithms for Backcalculation of Concrete Pavement Parameters Fwa, T. F. Primary Author mixed material bibliography ASTM 2000 id Indonesia pp. 267-280 Nondestructive Testing Of Pavements And Backcalculation Of Moduli Third Volume. Astm Stp 1375 This paper presents the development of a family of closed-form and semiclosed-form backcalculation algorithms for nondestructive evaluation of rigid-pavement layer properties. Using measured surface deflections as input, these closed-form algorithms were developed for a rigid pavement slab supported on one of the following foundations: (i) a Winkler (i.e. liquid) foundation, (ii) an elastic solid foundation, and (iii) a two-layer elastic solid foundation. These closed-form algorithms were next employed to develop semi-closed-form algorithms for nondestructive evaluation of rigid pavements with two slab layers. All the algorithms were developed for execution on personal computers. The formulation of the algorithms and the corresponding methods of solution are presented. It is also highlighted that the closed-form algorithms can be used to evaluate the quality of measured deflections and to single out erroneous deflection sensor readings. CONCRETE PAVEMENTS 625.7(063) Perpustakaan Direktorat Bina Teknik Jalan dan Jembatan Direktorat Jenderal Bina Marga - Kementerian Pekerjaan Umum (NPP: 3273244A00000001) 625.7(063) Fwa c 0000019173 My Library 625.7(063) Fwa c 18502 machine generated