Deteriorated concrete cover, e.g., spalling or delamination, especially when it occurs at the web of a reinforced (RC) beam within shear span, can reduce capacity beam. Patching this deteriorated area may be best option to recover affected. For purpose, unsaturated polyester resin mortar (UPR mortar) has been formulated. This research aims investigate efficacy UPR in limiting cracking and so re...

Fiber reinforced composites plays major role in improving the strength of various applications current trends. Based on these trends combination natural jute/coir fiber hybrid composite different size length was examined this study. The fabricated by compression moulding technique impregnating jute and coir with unsaturated polyester resin, Cobalt octoate methyl-ethyl-ketone peroxide as acceler...

Fumaric and maleic acid esters are functionalised with propargylamine. A subsequent Pd/Cu-catalysed oxidative homo-coupling of two alkyne moieties yields the corresponding dimers. Hence, a model of an unsaturated polyester chain is cross-linked in a welldefined, metal-mediated reaction in a very high yield.

A new type of unsaturated poly ester-amide was prepared by melt polycondensation and characterized completely. Influence of heat treatment conditions and cross-linking content on mechanical and degradation properties of unsaturated polyester-amide were studied. Results suggested that the newly synthesized unsaturated poly(ester-amide) possessed good heat stabilization properties. Mechanical...

This work describes the study to investigate and compare the mechanical and thermal properties of raw jute and glass fiber reinforced polyester hybrid composites. To improve the mechanical properties, jute fiber was hybridized with glass fiber. Polyester resin, jute and glass fibers were laminated in three weight ratios(77/23/0, 68/25/7 and 56/21/23) respectively to form composites. The tensile...