The use of reclaimed asphalt pavement (RAP) in freshly hot mixed asphalt (HMA) can save on material costs, preserve energy, and protect the environment. Employing limited amount of RAP in the production of asphalt mixes can result in similar performance as normal mixtures. However, adding more RAP can reduce the HMA’s mixing efficiency and could make the asphalt mixture more susceptible to fatigue and low-temperature cracking. Vegetable oil can act as a rejuvenator and reduce the HMA deficiencies with a high RAP percentage. This study investigated the potential effect of two vegetable oils; namely soybean oil (SOY) and sunflower oil (SnF), as rejuvenators on the properties of asphalt binders that contain 40% of RAP binder. To determine the optimum dosage of the rejuvenators (SOY and SnF), the properties of the rejuvenated RAP binders were carried out by conducting the penetration, softening point, viscosity, dynamic shear rheometer (DSR), and bending beam rheometer (BBR) tests. The test results indicated that vegetable oils could provide better fatigue and low-temperature cracking resistance with acceptable rutting performance. Furthermore, it is observed that, for the abovementioned properties, the addition of the 6%SOY and 3%SnF were more feasible in restoring the 40RAP binder to its original properties.

This work is an attempt to understand the effect of climate in an environment, therefore the effect of driving rain on buildings and on monuments is considered a case study. The study area is Port Harcourt Metropolis, a subequatorial climate environment, located in southern part of Nigeria. The study made use of questionnaire, and response were analyse using a descriptive statistical tool (simple percentage and pie chart). The study observed among other things that driving rain defaces buildings and monuments. Furthermore majority of those interviewed are of the opinion that driving rain has made them spend more money in building and monument maintenance as the case may be. It was also observed that driving rain contributes to rill erosion within and around buildings and monuments. The study also finds out that driving rain affects the strength of buildings negatively, and that electrical appliance can also be affected. This work suggests among other things, that water resistance paints and material should be used on buildings and monuments. The windward side of buildings should be designed in a way that the effect of driving rain should be minimal on the wall or windows. Furthermore, materials like books, cloths and other weather sensitive materials should be kept away from the damp windward side of the rooms. This implies that wardrobes should not be fixed or constructed in the windward side of the building. The study suggested that strong materials and standard specification of concrete mixture and standard original materials should be used in building construction especially in a humid environment like Port Harcourt metropolis. Finally, geographical factors need to be considered before building construction and professionals should be engaged in the business of building of houses and monuments construction to avoid collapse and damages.

The purpose of this study is (1) to analyze how the type of thinking style of UNILA new students in 2021. (2) to analyze how the type of emotional response of UNILA freshmen in 2021. (3) to analyze the types of communication patterns of UNILA new students in 2021. Research this was carried out simultaneously with the moment of orientation for new students at the University of Lampung in 2021. Descriptive quantitative research methods were used in this study. The subjects in this study were 5,065 new UNILA students in 2021. The survey method was used in this study. The data were analyzed using descriptive qualitative analysis using the SPSS version 22 application tool. The researcher found that (1) the majority of new students (43.3%) had a reflection type of thinking style. (2) the majority of new students (38.7%) had emotional response pattern with empathic type. (3) the majority of new students (43.4%) have a patterned communication pattern.