Question

Q1. “Road maintenance is widely recognized, but not done accordingly”. Justify this statement with probable reasons concisely. (8 marks) Draw a five (5) layer flexible pavement section showing: formation level, including materials for each layer, bound pavement layers, unbound pavement layers, location of prime coat, tack coat, and label the five layers, tentative California bearing ratio (CBR), Marshall density. (7 marks)

Answer 1

FLEXIBLE PAVEMENT SECTION Seal coat Tack coat Prime coat 1 Il-zin Surface Course & Bindercourse AXA Base Cowrsek SubBase Course + Pool Hoteles Subgrader TAS (2-4 in 4-12 in DEO (42 in Ginch CS Scanned with CamScanner

is done ads road transport is the largest ways of Kavel and cheapest , its imprlance is recognised globally, yet maintenance is not being accordingly - One of Lue main reasons is the expansion of deaffie volume where repair and maintenance pauses due to the discomfort foder of passengers. At places where no allesna soal is awailable, the mainknance of sood is challenge because, the repair or maintenance shereld toe done without hindering the traffic Maintenance can take number of forms but the main aim is to keep it close to its Original condilión as possible. Cells ielea is to prevent månos defects' from transforming into Unpaved roads maintenance include glass cutting, grade mountenance, unraveling pothole, supoirs, propee drianage and runoff "fealities ebe. One of the drawbacke maintenance major is caused older roads where different provisions for free maintenance like underground pige lines for checking the condition of roads are not available The constructed roads being well planned with widerr lanes, better drianage facilitzes usage of chemical coats to reduce wear and rütting of roads hequire less maintence efforts. major ones. of by archaic or culverts or newly CS Scanned with CamScanner