Download e-book for iPad: ACI 318-11: Building Code Requirements for Structural by ACI 318 Committee

By ACI 318 Committee

ISBN-10: 087031744X

ISBN-13: 9780870317446

The "Building Code specifications for Structural Concrete" ("Code") covers the fabrics, layout, and development of structural concrete utilized in constructions and the place acceptable in nonbuilding constructions. The Code additionally covers the energy overview of current concrete structures.

Among the themes coated are: agreement files; inspection; fabrics; longevity requisites; concrete caliber, blending, and putting; formwork; embedded pipes; building joints; reinforcement info; research and layout; power and serviceability; flexural and axial so much; shear and torsion; improvement and splices of reinforcement; slab structures; partitions; footings; precast concrete; composite flexural individuals; prestressed concrete; shells and folded plate contributors; energy review of latest buildings; provisions for seismic layout; structural undeniable concrete; strut-and- tie modeling in Appendix A; substitute layout provisions in Appendix B; substitute load and energy aid elements in Appendix C; and anchoring to concrete in Appendix D.

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I wonder whether you are studying the same sort of wear with transfer that Dr, Archard, Dr. Lancaster and others studied twenty to thirty years ago and called severe wear? Moreover, the model's emphasis on plastic work during sliding is supported by many experimental observations. The comment on strain energy to rupture seems to refer to results from simple tensile tests for which the plastic strains are much lower than those achieved during sliding. Therefores the result cited is not surprising.

Above) Effect of type of resin incorporated into fabric L (Fig. 0 GPa) 100 of 150 wear 200 (μπι) ιομ Fig. 14. (top right) Initial vs steady-state wear for all the PTFE/ fabric/resin liner materials examined: reciprocating line contact, load = 450 Ν X Ο + Θ four-shaft, satin-weave fabrics, PTFE warp fibres various PTFE fibre/glass fibre weaves various resins impregnating PTFE fibre/glass fibre cloth I Commercial interwoven PTFE fibre dispersed PTFE particles | materials 6μ Fig. 15. (right) (a) Variation of elastic modulus of the surface layer with depth of wear from ball indentation measurements.

A selection of the wear depth-time relationships is shown in Fig. 11 from which it can be seen that the type of reinforcing fibre also influences the depth of initial wear. Since the structure of all these liners is similar, with essentially the same PTFE and resin content, the type of fibre is most likely to influence composite strength or stiffness, and, in turn, wear through the strength of the interfacial bonding between the fibres and the phenolic resin. There is, in fact, a tenuous inverse correlation between the initial wear of this whole group of materials and their elastic moduli at about the Λ0°/ο level of significance.

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ACI 318-11: Building Code Requirements for Structural Concrete and Commentary (318-11) by ACI 318 Committee

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