Solid unreinforced pre-cast cement concrete paver blocks is a versatile, aesthetically attractive, functional, cost effective and requires little or no maintenance if correctly manufactured and laid. 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-40 grade of 80mm thickness for medium 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, it has now become very important to look as for the alternative source for natural materials used in concrete i.e. gravels and natural sand. Waste foundry sand (WFS) is a propitious material that can be used as an alternative for the naturals and i.e.(fine aggregates )in concrete. The thesis demonstrates the potential of re-use for waste foundry sand i.e. industrial by-product as a substitute of a fine aggregate in concrete. The fine aggregates i.e. (natural sand) are replaced with WFS in Three different substitution rates i.e. (2.5%, 5%, 10 %,). Several tests were performed to examine the mechanical properties i.e. (compressive strength, and flexural strength)as well as the durability of concrete.
Waste foundry sand, materials, concrete, natural sand, compressive strength, flexural strength
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