abstract: this paper presents the results of pullout tests on uniaxial geogrid embedded in silica sand under monotonic and cyclic pullout forces. the new testing device as a recently developed automated pullout test device for soil-geogrid strength and deformation behavior investigation is capable of applying load/displacement controlled monotonic/cyclic forces at different rates/frequencies an...

seismic retrofit of masonry slabs in existing steel or masonry buildings has found special significance in current codes as failure of unstable jack arch slabs has been reported as a major reason for collapsing structures in middle east deadly earthquakes. in this paper, three retrofit schemes are investigated and compared. the proposed rehabilitation techniques consist of a single x strapping,...

this paper presents the results of a series of monotonic and post-cyclic triaxial tests carried out on a clay specimen and three types of clay-sand mixed specimens. the focus of the paper is on the post-cyclic mechanical behavior of the mixed specimens, as compared to their monotonic behavior. analyses of the tests results show that cyclic loading degrade undrained shear strength and deformatio...

This paper reports on the following: (1) Simple experimental investigations of pultruded fiber-reinforced plastic (PFRP) material behavior and tests of simple epoxied joints to verify and enhance the reported database; (2) cyclic tests of an attempted PFRP rigid beam-column connections; and (3) preliminary observations regarding the seismic-resistance worthiness of PFRP structures. These are si...

In this paper we prove that testing the cyclic level planarity of a cyclic level graph is a polynomial-time solvable problem. This is achieved by introducing and studying a generalization of this problem, which we call cyclic T -level planarity. Moreover, we show a complexity dichotomy for testing the simultaneous level planarity of a set of level graphs, with respect to both the number of leve...

1.0 Introduction 2.0 Experimental details 2.1 CVD process 2.2 Oxidation Testing 2.3 Cyclic Oxidation Testing 2.4 Corrosion Testing 2.5 Tensile Testing 3.0 Results and discussion 3.1 3.2 3.3 3.4 3.5 3.6 Effect of system parameters 3.1.1 System pressure 3.1.2 Input gas velocity 3.1.3 A1/Si molar ratio Structure of mullite coating Oxidation Testing Cyclic Oxidation Hot Corrosion Tensile Strength 4...