FRPs (Fiber Reinforced Polymers) are composite materials made of a polymer reinforced with fibers. The polymer is usually an epoxy, vinylester or polyester thermosetting plastic that is combined with a fiber, such as glass or carbon, in order to make the polymer strong and stiff.
Currently, these polymers are used in almost every kind of advanced engineering, from aircraft to bridges.
GeoTree delivers a range of FRPs under its RenewWrap offering:
The RenewWrap FRP strengthening system comprises a wide range of carbon and glass FRP reinforcements and compatible saturating resins including our ICC-ES certified (ESR-3663) FRP strengthening system.
With hundreds of projects completed, RenewWrap FRP is a proven system in multiple applications including strengthening and seismic upgrade of buildings and structures, bridges, columns, caps, piers, and many other areas of need.
RenewWrap NSM CFRP Bars
RenewWrap pre-cured carbon fiber bars are designed to be used in near surface mounted (NSM) strengthening applications. RenewWrap carbon fiber bars are manufactured with a grit surface to promote adhesion with the bonding resin.
RenewWrap NSM CFRP Bars may be used to strengthen or retrofit a wide range of concrete and masonry structures. They are most commonly used where traditional wet lay-up FRP systems are not suitable or where the FRP reinforcement requires additional protection from abrasion or vehicular traffic.
NSM bars are used for strengthening existing structural members (concrete, wood, stone, or masonry) in flexure and shear. Structures that are deficient due to either a structural flaw, deterioration or a change in use, can often be brought to useful capacity using NSM bars.
RenewWrap Strand Sheet
RenewWrap Strand Sheets are unidirectional reinforcement sheets consisting of an assembly of pre-cured carbon fiber micro bars. Sheets are externally bonded to existing steel, concrete, and masonry structures to enhance their strength and stiffness. Strand Sheets combine the best features of traditional wet lay-up fabric and pre-cured plate FRP system creating a cost effective method for strengthening steel structures.
- Slabs and bridge decks
- Cantilevered bridge decks
- Double tee parking decks
- Shear and flexural upgrades of walls
- Crack stitching
- Precast Bridge Deck Panels
- Concrete Poles & Marine Pilings
- Stay-in-Place Formwork
- Un-bonded Post Tensioning
- Post Tensioning of Precast Members
- King Post Arrangement for Floor Slabs
- Replacement of Corroded Steel Tendons
- Concrete, steel, and masonry structures
- Steel structures caused by corrosion-related deterioration or increased loads
- Loss of tension and compression
- Flanges, bracing, webbing, truss chords, and girder ends
- Repairs stresses in existing steel members
- Steel bridge girders, beams, column repairs
- Precast bridge deck panel repairs
- Concrete poles and marine pilings
- Replacement of corroded steel tendons
How to install GeoTree Solution’ RenewWrap FRP
STRUCTURAL STRENGTHENINGPROJECT OVERVIEWWhen the parking deck of a busy Kentucky hospital was found to have cracks appearing in its slabs and columns the facility’s owners called on design engineers SSE Inc to develop a plan to mitigate the problem. They in turn called on Shield Systems, Inc., a manufacturer’s representative of GeoTree, who had access […]
STRUCTURAL STRENGTHENINGPROJECT OVERVIEW Engineers from the Louisiana Department of Transportation (LADOT) identified a bridge that required flexural strengthening and repair of spalling concrete on the underside. The busy bridge is raised and lowered around 800 times a month so they needed to find a repair solution which would cause the least disruption to the bridge’s […]
STRUCTURAL STRENGTHENINGPROJECT OVERVIEW The Umpqua River Bridge along the Oregon Coast Highway (US 101) is a swing-span bridge flanked by two tied reinforced concrete arches on each side. The bridge was opened in 1936 and was added to the National Register of Historic Places in 2005. Due to the age and deterioration of the bridge, along with increased loading, […]
STRUCTURAL STRENGTHENINGPROJECT OVERVIEW The SCDOT found corrosion-related deterioration of the pier caps and columns supporting the Butler Road bridge over I-385 in Greenville, SC, during a routine inspection. The corrosion was caught early enough and was limited to only one column and a couple of locations on the pier cap to be repaired by the SCDOT maintenance crews. To […]
STRUCTURAL STRENGTHENINGPROJECT OVERVIEW In June of 2016, the South Carolina DOT (SCDOT) was in the midst of building a new interchange at the intersection of I-85/I-385 in Greenville, South Carolina. During construction, severe localized spalling was found on the cover concrete of one column of a two-column pier supporting the I-385 northbound ramp. Upon discovery, the DOT and their […]
STRUCTURAL STRENGTHENINGPROJECT OVERVIEW The North Greene Street Bridge over the Spokane River is a concrete bridge that was designed and built in the 1950s. The arch structure had load restrictions that prevented heavy trucks, including fire trucks, from using the bridge on this major route. The City of Spokane allowed lane closures but required the bridge to remain open […]
STRUCTURAL STRENGTHENINGPROJECT OVERVIEW A cluster of eight grain silos constructed in Central California in 2000 were recently strengthened with the RenewWrap™ carbon fiber strengthening system after one of the walls experienced a localized failure and a subsequent inspection revealed deficiencies in the quantity and detailing of the reinforcing steel. Standing at approximately 150 feet tall […]