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Human activities significantly contribution to the yearly generated plastic wastes. Moreover, the enormous increase in face masks and face shields caused by the emergence of the COVID-19 pandemic has doubled the generated plastic wastes. Although there is an added benefit of using plastic waste in construction, the cost associated with their application, specifically the face mask, has not been addressed. This paper presents a simplified and rapid estimation of the cost associated with the collection, processing, and application of face masks in hot-mix asphalt (HMA) pavements. Two scenarios, mask modified asphalt pavement and conventional asphalt pavement, are considered. The total cost is based on market price and prices from waste management facilities and plastic processing companies. Life Cycle Cost Analysis (LCCA) is used to evaluate the long-term costs of mask modified asphalt pavement and conventional asphalt pavement. Results show that no significant difference in initial total cost between the two scenarios for pavement sections with lengths less than 500m and the number of lanes less than 6. The difference in total cost begins with lengths greater than 500 m for 5 and 6 Lanes. Despite the higher initial costs for the mask modified asphalt pavement, the LCCA shows that there is a 29% maintenance cost reduction over the 40 years life cycle of the asphalt pavement. The use of LCCA shows the benefit of the selection of the most cost-effective strategy and how the use of mask modified asphalt pavement over the conventional asphalt pavement can save money over the life cycle of the asphalt and improve rutting and stiffens.

Heritage management is important to conserve the identity of history and culture, which can generate economic activity, enhance aesthetics, increase surrounding land value, and transfer knowledge from generation to generation. Bangladesh is a land that belongs to various forms of heritage, and Rajshahi city is not an exception with different cultural and natural heritage. Overpopulation growth, unplanned urbanization, poor infrastructure, and weak urban management are imposing risks on deteriorating heritage in current days. This study was conducted to rummage the involvement of community people in imperishability and management of heritage in the Rajshahi City Corporation of Bangladesh. To fulfill the objectives, 205 individual surveys, 3 Focus Group Discussions, and 10 Key Informant Interviews were conducted to ascertain public engagement and their visualization in respect to predicament of heritage, conservation, and the way for the future. Findings reveal that 95% of respondents thought that all the heritages express the identity of Rajshahi, where around 30% of people identified some heritages as directly or indirectly related to their family. Besides, 56.67% of people strongly expressed their views that they want to conserve their heritage through the development process, while 34.17% usually accept this argument. This research also shows a Strength, Weakness, Opportunity, and Threat (SWOT) matrix regarding heritage management, where a priority and decision matrix have been carried out to a certain internal and external factors for heritage conservation. This research thus expected to help different people from government, non-government and local people take action regarding different forms of heritage conservation in Bangladesh.