Development of Traffic Noise Barrier by Recycle Waste with Mortar

Abstract

Objectives: This research aimed to study the efficiency of soundproofing and the compressive strength, flexural strength and tensile strength of the traffic noise barrier by recycle waste with mortar.

Methods: The traffic noise barriers by recycle waste were 1 meter wide, 1 meter long and 15 centimeters thick. Recycled wastes were used in the study that were styrofoam food packaging and paper egg cartons. They were mixed as the each of soundproofing materials at the mixing percentages were 0, 10, 25 and 50 by weight. Tile adhesive cement was the bonding agent in w/c ratio as 0.7.

Results: The higher the amount of recycled waste in the noise barrier, the soundproof performance of the noise barrier plates were also higher. The noise barrier plates were mixed with the recycled waste as styrofoam food packaging. They were more efficiency in the soundproofing than paper egg cartons. In addition, the noise barrier plates mixed with 50% of recycled waste as styrofoam food packaging had higher soundproofing efficiency than the soundproof mortar wall plates. They hadn't the recycled wastes. And the results of the studies on the compressive strength, flexural strength and tensile strength of the noise barrier plates that were mixed with soundproofing materials from recycled wastes. They were the noise barrier plates mixed with 50% by weight of recycled waste as styrofoam food packaging would have the minimum compressive strength, the minimum flexural strength and the minimum tensile strength were 27.267 kg/cm², 11.410 kg/cm² and 2.526 kg/cm², respectively. That the compressive strength, the flexural strength and the tensile strength of the traffic noise barrier by recycle wastes with mortar were higher than the highway department standards. But there must also be reinforcement of the bending steel and the tensile steel in the soundproof mortar walls. In order to prevent accident cases that they were cause of the mortar wall plate to break and fall. And they have made to damage and danger with the road users.