Effect of Partial Replacement of Cement by Rice Husk Ash using Nylon Fiber in Concrete Paver Blocks

Pre-cast cement concrete paver blocks is solid and unreinforced these material is a versatile, aesthetically attractive, functional, cost effective; if correctly manufactured and laid it requires little maintenance. Paver blocks can be used for different traffic categories i.e. Non-traffic, Light-traffic, Medium-traffic, Heavy-traffic and Very heavy traffic. In present study work paver blocks of M-35 grade of 60mm thickness for light traffic with varying percentage of nylon fiber (0.1%, 0.2%, 0.3%, 0.4% & 0.5%) is used to improve the compressive strength is casted. After finding optimum percentage of nylon fiber, the same is used as constant and Rice Husk Ash (RHA) in varying percentage (10%, 20% & 30%) is added (as cement replacement) to examine the changes in compressive strength of paver block. It has been found that using Nylon Fiber increases the compressive strength up to 18.86% when we use Nylon fiber upto 0.3%, as compared to conventional mixture; and Nylon Fiber makes the blocks more opaque as compare to other paver blocks and The optimum dose of 20 % of Rice Husk Ash (RHA) gives maximum strength of paver block.