Peculiarity of low noise pavement design under Lithuanian conditions/Triuksma mazinanciu dangu kurimas Lietuvos salygoms/Zema troksna segumu projektesanas ipatnibas Lietuvas apstaklos/Madala muratasemega katete projekteerimise eripara Leedu tingimustes

The paper gives a detailed overview and analysis of road transport noise propagation, noise composition and impacts on the living conditions. Road transport noise has been rapidly growing and the traditional noise abatement solutions, such as noise barriers, are not always suitable and cost-effective for particular road infrastructure. One of the most promising and effective solutions is the use of low noise pavements. Presently, low noise pavements are not being used in Lithuania but expected to have a good environmental noise reduction potential. However, the most effective low noise pavement solutions according to other European countries' experience are not always applicable for Lithuanian road conditions. For these reasons, few low noise asphalt pavement mixtures were developed to achieve a relatively high noise reduction effect and maintain sufficient mechanical and operational characteristics under Lithuanian conditions. Laboratory testing results (including mechanical and physical, noise reduction and durability characteristics) and comparison with traditional asphalt mixtures are provided in the paper as well as recommendations for the use of the developed low noise asphalt mixtures. Keywords: tyre/road noise, low noise asphalt, asphalt noise tests, pavement noise emission. Straipsnyje analizuojamas keliu transporto triuksmo susidarymas ir sklaida, triuksmo sudetis ir poveikis gyvenimo salygoms. Nuolat didejancio keliu transporto triuksmo kontekste tokios tradicines triuksmo mazinimo priemones, kaip triuksmo sienutes, ne visada ekonomiskai atsiperka ir yra pritaikomos. Vienas perspektyviausiu keliu transporto triuksmo problemos sprendimo budu--triuksma mazinancios keliu dangos. Nors sio tipo dangos Lietuvoje dar nera klojamos, taciau tikimasi, kad jos galetu gerokai sumazinti aplinkos triuksmo lygi. Efektyviausios triuksma mazinancios keliu dangos, klojamos Europos salyse, nera visada tinkamos Lietuvos keliu salygoms, todel buvo sukurtos specialiai Lietuvos salygoms pritaikytos triuksma mazinancios keliu dangos, kurios ne tik leistu sumazinti triuksma, bet ir pasizymetu mechaninemis ir eksploatacinemis savybemis. Straipsnyje pateikiami laboratoriniu bandymu rezultatai (iskaitant mechanines ir fizikines, triuksmo mazinimo ir ilgaamziskumo charakteristikas), kurie palyginti su tradiciniu asfalto misiniu savybemis. Taip pat pateikiamos sukurtu triuksma mazinanciu asfaltiniu dangu taikymo rekomendacijos. Reiksminiai zodziai: padangos/dangos triuksmas,