Geosynthetic cementitious composite mats (GCCM’s) were originally developed in 2005 and are a relatively new material technology in the world of geosynthetics. GCCM’s consist of a flexible 3-dimensional fibre matrix filled with a high-early strength dry concrete mix with a polymeric membrane laminated onto one side. In this way they combine geotextile, geomembrane and concrete technology en-abling geosynthetics to be used in completely new markets and applications.
GCCM’s have continually been advanced over the last 12 years, improving performance, quality and scope of application. This paper is an overview of the latest developments to characterize the properties of this new class of material. Specifically, it will focus on the essential characteristics of GCCMs which are being integrated into an EAD (European Assessment Document) for GCCMs:
Thickness & density
Flexural strength
Abrasion Resistance
Puncture Resistance
Durability
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Concrete Canvas® geosynthetic composite cementitious mat (GCCM) is a flexible, concrete impregnated fabric that hardens when hydrated to form a thin, durable, water proof and fire resistant concrete layer.
It is used for a wide range of erosion control and weed suppression applications, and allows concrete construction with minimal plant and specialist training.
Typically ten-times faster to install than conventional solutions, essentially its Concrete on a Roll™: simply unroll and just add water.
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Installation of Concrete Canvas is easy as it allows concrete construction without the need for plant or mixing equipment. Simply unroll and position Concrete Canvas and add water (any type of water, including sea water).
To ensure long-term performance of a GCCM and prevent premature failure, a new standard known as ASTM D8364 has been published which requires minimum performance values to be met for a product to be considered a GCCM.
Concrete Canvas is the world’s first patented GCCM that meets ASTM D8364 – Standard Specification for GCCM Materials and exceeds the requirements for Type I, Type II and Type III applications.
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