基于轮胎下落法的聚合物改性混凝土路面噪声特性

Noise Characteristics of Polymer Concrete Pavement Based on Tire Falling Method

为研究聚合物改性水泥混凝土路面噪声特性,分析不同路面表面纹理的噪声大小,采用室内轮胎下落法对不同聚合物改性水泥混凝土(PCC)路面噪声进行测试,结果表明,集料粒径越大,路面降噪效果越明显;PCC路面构造深度与路面噪声值呈良好的线性关系,且构造深度越大,噪声值越小;通过对不同类型路面噪声进行测试,PCC路面具有丰富的路面表面纹理,与普通刻槽水泥混凝土路面相比较,PCC路面可降低噪声2.7 d B(A),降噪效果明显.

In order to study the noise characteristics of the polymer modified concrete pavement （PCC） with dif-ferent pavement texture,tire falling method was used to test PCC pavement noise in the paper. The results show that the larger particle aggregates,the lower road noise. PCC pavement structure depth shows a good linear rela-tionship with road noise value,the larger texture depth,the smaller the noise value. Through the tests of different kinds of noise pavement,it turns out the PCC pavement has rich surface texture, the noise of PCC pavement is 2.7dB （A） lower than the ordinary concrete pavement. Noise reduction of PCC pavement is obvious.