Chester Tang's Blog

The article “Porous Asphalt Is King of the Road” (PaveGreen, n.d.) presents the benefits of porous asphalt surfaces and explains its utility in improving stormwater management and road safety. Rainfall naturally sinks into the soil and is filtered through it. However, in cities, rainfall or “runoff” causes flooding on roads and parking lots, along with contaminants, such as oils and minerals. It then flows straight into drains without being filtered naturally. The article states that porous asphalt is a natural material consisting of rocks combined with asphalt cement. However, there are fewer fine aggregates to provide space for water to pass through open spaces between large aggregates, as compared to conventional roads. Underneath, a “recharge bed” composed of spaced-out stones with 40% voids retains rainwater until it is filtered into the soil. Hence, the rainwater is cleaned. Hence, porous asphalt is extremely beneficial as it reduces stormwater drainage costs and increases road s

  Introduction This proposal is written in response to an email calling for proposals for sustainable economic growth. It aims to provide LTA with a comprehensive overview of how electric excavators would benefit the country in the long run.  1.1 Background The Four Brothers team’s focus is on sustainability and environmental protection. The team started off with the idea of changing common day garbage trucks to electric vehicles (EVs). However, through initial research, the team found out that this concept has already been implemented by Sembcorp Pte Ltd, one of the main companies in the waste management sector in Singapore. They have converted 20% of their garbage truck fleet to EVs and are planning to do more by 2030. Hence, as civil engineering students, the team has changed its field of focus to its area of speciality, the construction sector. The team has narrowed it down to excavators in road works specifically since excavators are one of the more prominent and heavily used vehi

The article “Porous Asphalt Is King of the Road” (PaveGreen, n.d.) presents the benefits of porous asphalt surfaces and explains its utility in improving stormwater management and road safety. Rainfall naturally sinks into the soil and is filtered through it. However, in cities, rainfall or “runoff” causes flooding on roads and parking lots, along with contaminants, such as oils and minerals. It then flows straight into drains without being filtered naturally. The article states that porous asphalt is a natural material consisting of rocks combined with asphalt cement. However, there are fewer fine aggregates to provide space for water to pass through open spaces between large aggregates, as compared to conventional roads. Underneath, a “recharge bed” composed of spaced-out stones with 40% voids retains rainwater until it is filtered into the soil. Hence, the rainwater is cleaned. Porous asphalt is extremely beneficial as it reduces stormwater drainage costs and increases road safety w

The article “Porous Asphalt Is King of the Road” (PaveGreen, n.d.) presents the benefits of porous asphalt surfaces and explains its utility in improving stormwater management and road safety. Rainfall naturally sinks into the soil and is filtered through it. However, in cities, rainfall or “runoff” causes flooding on roads and parking lots, along with contaminants, such as oils and minerals. It then flows straight into drains without being filtered naturally. The article states that porous asphalt is a natural material consisting of rocks combined with asphalt cement. However, there are fewer fine aggregates to provide space for water to pass through open spaces between large aggregates, as compared to conventional roads. Underneath, a “recharge bed” composed of spaced-out stones with 40% voids retains rainwater until it is filtered into the soil. Hence, the rainwater is cleaned. Porous asphalt is extremely beneficial as it reduces stormwater drainage costs and increases road safety w

The article “Porous Asphalt Is King of the Road” (PaveGreen, n.d.) presents the benefits of porous asphalt surfaces and explains its utility in improving stormwater management and road safety. Rainfall naturally sinks into the soil and is filtered through it. However, in cities, rainfall or “runoff” causes flooding on roads and parking lots, along with contaminants, such as oils and minerals. It then flows straight into drains without being filtered naturally. The article states that porous asphalt is a natural material consisting of rocks combined with asphalt cement, except that there are fewer fine aggregates to provide space for water to pass through open spaces between large aggregates, as compared to conventional roads. Underneath, a “recharge bed” composed of spaced-out stones with 40% voids retains rainwater until it is filtered into the soil, hence cleaning it. Porous asphalt is extremely beneficial as it reduces stormwater drainage costs and increases road safety while decrea

The article “Porous Asphalt Is King of the Road” (PaveGreen, n.d.) presents the benefits of porous asphalt surfaces and explains its utility in improving stormwater management and road safety. Rainfall naturally sinks into the soil and is filtered through it. However, in cities, rainfall or “runoff” causes flooding on roads and parking lots, along with contaminants, such as oils and minerals. It then flows straight into drains without being filtered naturally. The article states that porous asphalt is a natural material consisting of rocks combined with asphalt cement, except that there are fewer fine aggregates to provide space for water to pass through open spaces between large aggregates, as compared to conventional roads. Underneath, a “recharge bed” composed of spaced-out stones with 40% voids retains rainwater until it is filtered into the soil, hence cleaning it. The article also mentions that during storms, porous asphalt greatly reduces accidents as less road splashes lead to