Fibertex geosynthetic solutions for road maintenance

Fibertex geosynthec soluons for road maintenance, include Fibertex AM-2, which is a flexible needle punched nonwoven paving fabric. This robust product, was specifically developed by Fibertex, for African road engineering condions.

“The funcons of Fibertex AM-2 are twofold: To avoid reflecve cracking of new asphalt. This material is used to prevent the propagaon of cracking from an old pavement surface being transferred into a new re-sealed surface - stress relief,” says Lionel Kistan, export sales manager, Fibertex South Africa –manufacturers of geosynthec products.

“The second funcon of Fibertex AM-2 is to protect the subsoil from water intrusion and thereby loss of bearing capacity. In this case it is used to create an impermeable membrane layer – a seal - to prevent the ingress of surface water into road layer works through exisng cracks in the pavement.

“When water saturates the load bearing layers under a road surface, the bearing capacity of such layers reduce and crack formaons could eventually propagate and lead to pothole formaon under the dynamic loads of heavy traffic.

“This membrane also act as a Stress

Absorbing Membrane Interlayer (SAMI) to prevent surface stress cracking by absorbing stresses imposed by differenal loads.”

The Fibertex AM-2 system can be applied mechanically for large volume installaons, as well as manually in cases where narrow width installaons are required. By using Fibertex AM-2 paving fabric in road maintenance projects, future maintenance cycles can be reduced; full road rehabilitaon projects can be postponed and pavement life can be extended, which means substanal cost savings.

Addionally, when using Fibertex F-grade geotexles in a basal separaon applicaon below the road prism, the road design can be adjusted to decrease the thickness of load bearing layers, while sll maintaining or even increasing its load bearing capacity. This results in a more cost effecve design. Alternavely, without the use of a separaon fabric in weak subgrade condions, punching of engineered aggregate into the weak subgrade could occur, as well as ingress of the below subgrade into the engineered fill material. As a result, the bearing capacity of the base course could be reduced over me, which could lead to basal failure of the road. Virgin PP geotexles have a high level of chemical stability over a wide pH range and are thus suitable for applicaon in most civil engineering environmental condions. This characterisc ensures its durability, where product failure might not only impact on project cost, but could have a long term environmental impact.

Fibertex UV stabilised virgin PP geotexles are the only nonwoven geotexles produced in Africa with cerficaon for durability of over 100 years, in accordance with the latest EN standards.

This range of environmentally-friendly geosynthec materials encompasses nonwoven and woven geotexles, gabions and maresses, drainage pipes and fings and erosion control and cellular confinement soluons. The company also supplies soil reinforcement and stabilisaon products, including geogrids and geocells, as well as geosynthec clay liners (GCL) and geomembranes (GMB) that can be used as part of composite lining systems in waste containment soluons.

Fibertex South Africa's team of experts from branches in KwaZulu-Natal, Gauteng and the Western Cape offers a technical advisory and support service, to ensure correct specificaon of durable and safe materials for every project.

Specialized in Slurry Pumping!

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