Experimental Evaluation of Cement Replacement Fillers on the Performance of Slurry Seal

World Multidisciplinary Earth Sciences Symposium 2016

Fakhri, Mansour^1 ; Alrezaei, Hossein Ali^2 ; Almasi, Soroush Naji^2

Faculty Member of Civil Engineering, K.N Toosi University of Technology, Iran^1

Masters of Road and Transportation, K.N Toosi University of Technology, Iran^2

关键词: Cement replacement;    Economic approach;    Environmental pollutions;    Experimental evaluation;    Manufacturing process;    Pollutant gas;    Slurry seals;    Stone powders;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/44/5/052032/pdf
DOI  :  10.1088/1755-1315/44/5/052032

来源: IOP

【 摘 要 】

Reducing the level of roads service is a process that starts from the first day of the operation of road and the slope of deterioration curve of road sustainability becomes faster with the passage of time. After building the road, adopting an economic approach in order to maintain the road is very important. Slurry seal as one type of protective asphalts that works by sealing inactive cracks of the road and increasing skid resistance is the most effective types of restoration with environmentally friendly behaviour. Fillers are responsible for adjusting set time in slurry seal. Cement is the most common filler used in slurry seal. Cements having suitable properties as a filler, has a very energy demanding manufacturing process and a notable amount of energy is used for manufacturing cement in the country annually. On the other hand, manufacturing process and application of cement have increased levels of pollutant gases, followed by significant environmental pollution. So in this study other options as a filler such as hydrated lime, stone powder and the slag from iron melting furnace were compared with two common types of cement (Portland and type-v cement) in the mixtures of slurry seal by wet abrasion and cohesion tests. Results indicated that, in both tests, lime and slag fillers had behaviours close to the cement filler.