Case Study

Procedure & Observations:
CERATECH personnel arrived on site to perform an application of Pavemend SLQ™ (5.0) and Pavemend VR™ (Vertimend) as an introduction to our family of products. The underlying principle for this application is to exhibit the ability to utilize Pavemend as a repair element focused on high traffic areas subjected to varying loads with quick return to service.

The first site consisted of an exterior suspended slab on an elevated bridge deck with varying degrees of degradation and spalling. The repair section (~4.5’ x 5’ x 2.5”) was prepared by the maintenance crews upon our arrival on site. The site consisted of a silica fume overlayment. The site was taken down to remove the majority of the spalled concrete adjacent to the failed area. After inspection and removal of residual elements of the failed host, the area was blown clean to remove any contaminants

The application conditions included ambient and surface temperatures of ~52.5°F, material temperatures of 51°F and a starting water temperature of 80F. The water was heated to allow for better productivity and to exhibit product versatility in colder temperatures. An average mixing time of 3:00 was encountered when utilizing the Pavemend SLQ™ (5.0) All materials were mixed to their respective critical mix temperature (92°F for Pavemend SLQ™ (5.0)) before placement. The parameter of the repair site was utilized to bring the application to grade.

Figure 1: Preparation of the first site and site repair completed.

The second site consisted of an impacted curb section with varying degrees of degradation and spalling of the existing adjacent concrete. The curb section (~4’ x 6” x 6”) was prepared by the maintenance crews upon our arrival on site. The site was taken down to stable concrete to allow a complete and reliable bond. After inspection and removal of residual elements of the failed host, the area was blown clean to remove any contaminants.

The application conditions included ambient and surface temperatures of ~70°F, material temperatures of 70°F and a water temperature of 79°F. An average mixing time of 4:15 was encountered when utilizing the Pavemend VR™ (Vertimend). Multiple units (3) were mixed as batches to increase productivity. All materials were mixed to their respective critical mix temperature (90°F for VR) before placement.

The products were mixed by CERATECH representatives to demonstrate proper technique. CERATECH personnel placed the products to display ease of use and the engineered properties of the product.

Figure 2: Preparation of the second site and site repair completed.