Polymer-Modified Bio-Asphalt: A Sustainable Panacea to Greenhouse Gas Emissions

The asphalt industry has been perpetually challenged with its health hazardous emissions and global warming issues, especially when produced with or from derivatives of fossil fuels and together with the need for higher strength to meet the heavy truck axle loads on highways. In view of the steady increase in high traffic intensity of heavily loaded trucks and the increase in the overloading of truck axles together with the significant variation in daily and seasonal temperature due to climate change effects, it is essential to modify the conventional asphalt cement using a combination of modifiers to improve the engineering properties of mixes to meet the complexity of the factors for higher strength and the environment. Global warming has consequently contributed immensely to adverse climate change effects, environmental degradation and attendant human health problems. The challenges posed by global pollution and depletion of fossil fuels leading to high cost of bituminous binder derivatives such as bitumen have motivated the search for and development and utilization of alternative binders, amongst which are polymer-modified bitumen and bio-oils. Research in this direction is hoping to find a permanent replacement for bitumen, thereby reducing greenhouse gas emissions and attendant climate change effects

Modelling the Effect of Income and Car Ownership on Recreational Trip in Akure ,Nigeria

The effect of income and car ownership on recreational trip pattern in the study area was analysed, focusing on the frequency of trips, modal choice and the land use pattern. It is an attempts to extend research on travel characteristics and behaviour to cities of the developing world with focus on Akure metropoli

Modelling the Effect of Income and Car Ownership on Recreational Trip in Akure ,Nigeria

The effect of income and car ownership on recreational trip pattern in the study area was analysed, focusing on the frequency of trips, modal choice and the land use pattern. It is an attempts to extend research on travel characteristics and behaviour to cities of the developing world with focus on Akure metropolis

Trip pattern of low density residential area in semi urban industrial cluster: predictive modeling

This research elucidates the trip pattern of the low-density residential zone in a semi-urban industrial cluster of southwestern Nigeria. These sets of dwellers are often times neglected in the transportation planning process. To achieve the aim of this research, domiciliary information gathering procedure was employed with 0.82 return rates. It was backed up with the focus group discussion method. Data on frequency of trips, per capita trip, modal choice, and socioeconomic and demographic data were collected, collated, and analysed. Accordingly, a predictive model was formulated for the trip pattern of the low-density area. This was achieved with the aid of statistical software SPSS version 21.Consequently, the results of the multiple regression models showed that both monthly income and car ownership had a significant positive influence on the work trip while only car ownership positively influences non-work trip. R2 values of 0.729 and 0.739 were obtained for the descriptive model at 95% confidence level. This established the robustness of the model, the analysis showed that monthly income and car ownership had a significant positive influence on the work trip with an Rsquare value of 0.729 and 0.739 for work and non-work trip respectively. This indicated that household will embark on more trips with an increase in car ownership and monthly income. However, effective transportation planning and traffic infrastructural development were recommended to meet the demands of the increased number of trips daily

PERVIOUS PAVEMENTS FOR STORM WATER CONTROL

and to recharge underground aquifer. It could also be used to trap solids and keep pollutants from contaminating the water stream. This review of literature examines existing studies methodologies, technologies, advantages and drawbacks on the use of pervious pavement for stormwater control and aquifer recharge. The result of the review revealed that cement content, water-cement ratio and compaction level affect the mechanical strength of pervious concrete in rigid pavement construction. Due to the complex nature pervious properties of this concrete. Pervious concrete requires stricter quality control of the concrete mixture proportioning as compared with the conventional concrete as there are no standard specification for testing. Surface sweeping method of pore-clogging removal was ineffective in the improvement of the hydraulic conductivity of pervious pavements, as it can only help in the removal of surface debris and not sediments removal from deep voids. The development of this pavement is a positive way forward for stormwater management and aquifer recharge. It is a viable technology in the reduction of stormwater runoff and the concentration of pollutants

Assessment of the Engineering Properties of Modified Asphalt Using Aluminium Dross as a Filler.

Aluminum dross waste creates environmental burden for manufacturers and hence the need for its re-use. This experimental research assessed the engineering properties of modified asphalt using aluminium dross as a filer material. The aluminium dross used was obtained from a steel manufacturing industry. Elemental composition of the oxides was done using XRF equipment. Sieve analysis of the aluminium dross and the coarse aggregate was also assessed. Additionally, ductility, penetration, ball and ring and Marshall stability test were used in achieving the aim of this research. The outcome of the research revealed that 10-20% addition of the aluminium dross improved the stability of the modified asphalt. Physical observation revealed that the utilization of the waste stiffened the modified asphalt. The result showed that the addition of aluminium dross reduced the VMA. This will also increase the asphalt mix flushing. Additionally, at higher percentage addition of the waste the stiffness of the asphalt mix increases especially at a higher temperature. The use of this material will help in the reduction of solid waste and reduce the cost of management while reducing the cost of pavement construction in track with the trash to treasure drive

Dataset of mechanical, marshall and rheological properties of crumb rubber – Bio-oil modified hot mix asphalt for sustainable pavement works

This data article presents information on the modification of bitumen with bio-oil pyrolyzed from cassava peels, and upgraded with a non-degradable polymer i.e. crumb rubber. Performance tests were carried out on the bio-oil crumb rubber modified bitumen. The main objective of bitumen modification is to produce new binders with improved mechanical, marshall and rheological properties [1]. The percentage of bio-oil by volume used for modification of bitumen was 5%, 10%, 15% and 20% respectively. Marshall Stability and flow tests were also carried out on the crumb rubber bio-asphalt produced