Recycled plastic is being used to form piles that support do

Recycled plastic is being used to form piles that support docks in saltwater, as shown in the figure. Name one property in each category and why the property is important in this case.

a. One physical property

b. One mechanical property

c. One chemical property   

Solution

Physical property: One most important physical property in the case of plastic piles in the docks is it\'s melting point. The recycled plastics often tend to have low melting points due to their weak structure, So, the temperature of the water around it may cause them to soften. Hence the melting point f the plastic should be preferred above the hottest temperature than the surrounding waters

Mechanical property: One most important mechanical property in the case of plastic piles in the docks is its elastic modulus. the elastic modulus f the plastic is the direct measurement of the strength of the plastic and it should be high enough to resist the loads coming from the pile cap.

Chemical property: The most important chemical property is the resistance to react with salts. the plastic material should be preferably inert when in contact with the salts as the surrounding sea waters may corrode it.