In October 2014 Concrete Canvas® (CC) was used to stablize and prevent erosion on a berm that must maintain a specific height due to industry safety protocolls. Due to eriosion, regular and costly maintenence was required to ensure that the berm met regulatory height requirements and maintained structural integrity. Perviously, asphalt had been used in this application, however, annual maintenance cost & the expense of recoating the berm every 5 to 7 years was a much less desirable option than CC’s 25 year life expectancy and virtually non existant maintenance requirements.
In addition to the fact that Concrete Canvas is long lasting and low-maintenance, CC was also ideal for this application due to its properties of being fireproof and environmentally friendly. Further, CC offers the added benefit of vegitation control as vegitation is unable to grow under or though it.
Asphalt was loosing favour in this application due to its unstable nature and characteristics. Asphalt suffers from deterriration to to UV exposure which causes it to dry out and crack. The integrity of asphalt is also compromised by vegetation. This was resulting in the afforementioned neccecity of costly recoating every 5-7 years. Asphalt was also creating site maintenence issues as, during the summer heat, it was leaving residue on equipment and the coveralls and boots of workers which was in-turn being tracked into the facilities and offices.
The installation of more than 55,000 sq. ft. of CC was completed by WRS (Western Refinery Serveces) over a period of seven days. Eight workers (including supervision) participated in the project with the use of a John Deere 135 excavator to hoist bulk rolls of CC as workers pulled, cut, and secured sheets.
The CC was laid progressively across the berm and secured at the edges with bolts. Stainless Steel 1” self-tapping screws placed at 12” -18” on center at the overlap. Sika 1-A Sealant was used at the overlap to seal the seams.12” spiral galvanize framing spikes were used at the base of the berm 3.5 ft. on center. A lock-in trench was use both sides of the berm to anchor the Concrete Cloth and then paved over to seal.
Sand bags were used to increase the height of the berm in certain area as needed.
Obstacles were easily encorporated into the design due to the ease with which CC is cut using a simple box cutter.
The CC was hydrated using a high volume mounted hose which were already on site.
A crew of eight installed 55,000 sq. ft. of CC over a period of seven days. Layers of CC were laid around many obstacles to create a smooth water and fire proof surface coating with a 25 year life expectancy. This project delivered significantly reduced maintenance costs and an environmentaly friendly solution to problems that the company had been experiencing due to the use of other materials in the past.
The project engineer on this case states: “The feedback that I am getting is they are very happy with the outcome.”