Pre-assembled Carbon Fiber Micro Bars

unidirectional CFRP reinforcement sheet-CTech-LLC

Product Documents

CMB™ - Technical Data Sheet Safety Data Sheet

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CMB™ is unidirectional reinforcement sheet consisting of an assembly of pre-cured carbon fiber micro bars. The product is available in various stiffnesses and may be used to strengthen existing concrete or steel structures by external bonding.

Key Features

  • Pre-cured and no onsite impregnation product.
  • Open construction of strand sheet facilitates bond to substrate allowing paste adhesive to encapsulate each micro bar.
  • Unlike solid carbon fiber plates, adhesive bond line can be visually inspected for consistency
  • Unlike solid carbon fiber plates, can be spliced by overlapping
  • Easy to slit to desired width
  • Can be used to retrofit steel structures where welding is dangerous or not allowed.


  • The CTech-LLC® CMB™ product can be used to retrofit and strengthening concrete, steel and masonry structures.

Storage Conditions

Store flat, in a cool, dry place at 5-35 °C and  away from flame or other hazards.

Shelf Life

No shelf life if stored in unopened packaging


Product Code Unit CMB™300S CMB™300I CMB™300H CMB™900H
Areal Weight gsm 300 300 300 900
Nominal Thickness mm 0.333 0.333 0.286 0.429

Codes and Standards

ACI, 2017, Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures, ACI 440.2R-17, American Concrete Institute, Farmington Hills, MI.

Fib Bulletin No. 14, Externally bonded FRP reinforcement for RC structures, 2001, 138 pp, ISBN 2-88394-054-1.

Fib Bulletin No. 35, Retrofitting of concrete structures by externally bonded FRPs, with emphasis on seismic applications, 2006, 220 pp, ISBN 978-2-88394-075-8.


CTech-LLC® warrants its products to be free from manufacturing defects. Buyer determines suitability of product for use and assumes all risks. Buyer’s sole remedy shall be limited to replacement of product. Any claim for breach of this warranty must be brought within one month of the date of purchase. CTech-LLC® shall not be liable for any consequential or special damages of any kind, resulting from any claim or breach of warranty, breach of contract, negligence or any legal theory. The Buyer, by accepting the products described herein, agrees to be responsible for thoroughly testing any application to determine its suitability before utilizing.