Nonmetal sound absorption plate for railway and preparation method for nonmetal sound absorption plate

Abstract

The invention discloses a nonmetal sound absorption plate for railway. The nonmetal sound absorption plate comprises a concrete plate, steel bar mesh pieces, sound absorption cotton and foam plates, wherein the concrete plate is formed by mixed pouring of concrete, coal ash and an early strength agent; each steel bar mesh piece adopts a cuboid integral type connection structure and is arranged in the concrete plate; the sound absorption cotton and the foam plates are arranged in a hollow part of the concrete plate; and the sound absorption cotton is connected to the inner wall of a panel layer through a hydrophobic black felt layer. The nonmetal sound absorption plate has the following advantages: the coal ash and the early strength agent are added into the concrete, so that the concrete strength is enhanced, the honey-comb and blasted surfaces are reduced, and the appearance quality is improved; the hydrophobic black felt layer is added between the sound absorption cotton and the panel layer of the concrete plate to achieve a waterproof effect, so that the sound absorption cotton is not damped on a rainy day; each steel bar adopts the cuboid integral type connection structure, so that the compressive strength of the sound absorption plate is improved; the foam plates are added, so that the requirement of surface density can be met under the condition of meeting the strength; and a trapezoidal bulge and a trapezoidal groove are arranged, so that the superposition of sound absorption plates is facilitated.

Description

technical field [0001] The invention relates to a railway non-metallic sound-absorbing board and a preparation method thereof. Background technique [0002] With the rapid development of my country's railway, highway construction and urban traffic, it has brought people convenient travel and at the same time brought a lot of traffic noise pollution to people. People have been using various measures to reduce traffic noise. Sound barrier technology is a A very simple and effective noise reduction method. Due to its low cost and good noise reduction effect, non-metallic sound barriers gradually increase their market share; the existing non-metallic sound barriers on the market mainly include GRC concrete sound barriers, cement wood particle board sound barriers, and perlite sound barriers. etc., the sound absorption coefficient, product compressive strength and appearance quality are not satisfactory, and the surface of the existing sound barrier is prone to honeycomb pitting ...

AI Technical Summary

Problems solved by technology

Due to its low cost and good noise reduction effect, non-metallic sound barriers gradually increase their share in the market; the existing non-metallic sound barriers on the market mainly include GRC concrete sound barriers, cement wood particle board sound barriers, and perlite sound barriers. etc., the sound absorption coefficient, product compressive strength and appearance quality are not satisfactory, and the surface of the existing sound barrier is prone to honeycomb pockmarks after forming, the internal steel skeleton is not a whole during the forming process, and the product strength is affected after layered pouring

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