Algae Growth

algae growth on walls

Algae proliferate in the presence of nutrients, sunlight and temperature, as well as moisture on surface and humidity. Nutrients from the soil of landscapes contribute to the growth of algae, while  concrete properties such as porous surface is a suitable platform for algae growth³². Pollutants from the vehicles may be blown off by the wind onto the column surface as a source of nutrients^33,34, such situation may be worsened for level one columns situated beside congested roads. Location of concrete columns near the road and landscape, together with Singapore’s relatively humid and sunny weather, provides all the elements for algae growth.