Have set up the relation equation of porosity pervious concrete and its average sound absorption coefficient . This equation can evaluate the sound-absorbing ability of different porosity pervious concrete pavement.

• 经过对不同孔隙率透水性混凝土吸声系数的研究,建立了透水性混凝土孔隙率与平均吸声系数的关系方程,该方程可用于评估透水性混凝土铺装吸声降噪能力。