This paper summarizes the results of experimental and analytical studies on the¯exural strengthening of reinforced concrete beams by the external bonding of high-strength, light-weight carbon ®ber reinforced polymer composite (CFRPC) laminates to the tension face of the beam. Four sets of beams, three with different amounts of CFRPC reinforcement by changing the width of CFRPC laminate, and one without CFRPC were tested in four-point bending over a span of 900 mm. The tests were carried out under displacement control. At least one beam in a set was extensively instrumented to monitor strains and de¯ections over the entire range of loading till the failure of the beam. The increase in strength and stiffness provided by the bonded laminate was assessed by varying the width of laminate. The results indicate that the¯exural strength of beams was signi®cantly increased as the width of laminate increased. Theoretical analysis using a computer program based on strain compatibility is presented to predict the ultimate strength and moment±de¯ection behavior of the beams. The comparison of the experimental results with theoretical values is also presented, along with an investigation of the beam failure modes. q

Solid waste management is one of the major problems of any developing country due to the rapid growth in urbanization and industrialization. In solid waste one of the main components is plastics. Some of the plastics used in household and industrial applications are polypropylene (PP), polyethylene (PE), polystyrene (PS), polyethylene terephthalate (PET) and this kind of plastics can be recyclable but these plastics are simply dumped in landfills and water bodies and then plays a vital role in the causes for environmental pollution and other threats. Degradation rate of plastics also very slow, hence disposal of these plastic wastes without any cautions are not only affecting our surroundings but also affecting humans and other living beings. In addition to plastic waste another one main element is construction waste. Most of these waste plastics and construction wastes such as ceramic waste, metal scraps and quarry dust can be recycled by proper processes and can be reused. These waste plastics can be used to manufacture plastic blocks that may be used in construction works. This paper mainly focuses on the review of researches done on Improving mechanical properties of paver blocks using various waste materials as reinforcement. These plastic paver blocks with reinforcement can be used in nontraffic roads such as walkways, footpaths, pedestrian plazas, landscapes, monument premises and in waterlog areas due to their low water absorption property.