Open AccessSound Absorption and Friction Properties of Nano-Lotus Leaf Coated Concrete for Rigid Pavement
Author(s) -
Marcelo González,
Md. Safiuddin,
Jingwen Cao,
Susan Tighe
Publication year - 2016
Publication title -
medžiagotyra
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.208
H-Index - 24
eISSN - 2029-7289
pISSN - 1392-1320
DOI - 10.5755/j01.ms.22.3.7638
Subject(s) - materials science , nano , composite material , sound (geography) , lotus , lotus effect , absorption (acoustics) , pervious concrete , geotechnical engineering , structural engineering , engineering , acoustics , cement , physics , chemistry , botany , raw material , organic chemistry , biology
This paper presents the feasibility of superhydrophobic films to create the nano-lotus leaf effect on concrete surface and their influence on sound absorption and friction properties of concrete for application in rigid pavements. The study involved an evaluation of nanomaterials at the laboratory scale to analyze the effects of microtexture modification on the friction and sound absorption of concrete pavement. A number of laboratory specimens were produced by applying different amounts of nano-lotus leaf coating on the top of the textured concrete surface. The British pendulum test was used to measure the friction number, and an impedance tube was used to determine the sound absorption coefficient. Laboratory results indicate that nano-lotus leaf coated concrete can maintain the required friction property for rigid pavement, but may not increase the noise absorption. Further research must be carried out to determine possible benefit of the lotus leaf effect for reducing hydroplaning, particularly during heavy rainfall