Structural lining rapidly repairs irrigation collection structure in Colorado
The North Poudre Irrigation Co. in Wellington, Colo., has installed and maintained irrigation water collection and distribution structures for nearly 100 years. These structures are quite common in the west and serve to collect irrigation water inflows and then redirect them into local irrigation ditches for distribution. Frequently, weirs are also a part of or are installed very near these distribution structures, and water volumes are measured and recorded.
The company estimates they have as many as 200 such structures in its network, and many are in need of repair. The aged concrete has cracked and is leaking, and in many cases, the cost of replacement is quite high. As a result, the company is interested in a more cost-effective means to repair the structures.
Concrete Cloth geosynthetic cementitious composite mat (GCCM) was chosen because of its unique attributes, including the ability to custom-shape the material to the configuration of each individual basin, which were all handcrafted originally. Also, the product is easy to install, allowing the company to use its own labor rather than an external contractor. The portability of Concrete Cloth GCCM is an advantage, as many of these structures are not easily accessible. Finally, the product is fire-resistant, which allows debris to be burned in these channels in the spring.
Day 1: The first step was to clean the area of debris. Then the layout was determined based on geometry and the dimensions of the basin. In this case, the irregular shape led to a design where the bottom would be lined first, and then separate panels would be installed on the walls of the structure.
Concrete Cloth GCCM was cut to fit the bottom, laid in place and fastened. The panels on the walls were glued and fastened using a nail gun. The entrance opening was then affixed using a hold down bar fastened into the walls of the opening. Concrete Cloth GCCM was screwed together at many overlaps. Finally, the completed installation was hydrated using a water truck and water hose. Watering was completed late the same day.
Day 2: The site was revisited for inspection of the final product.
This company was pleased with the installation and will likely use Concrete Cloth GCCM again in the near future, as it proved easy to handle, can be installed with company labor and is more cost-effective than the alternative of replacement.