Canal Lining | M31 Highway, Hungary

CCX-M^® used to line newly constructed water run-off channel

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Before

After

Project Overview

The M31 and Kis-rakos river basin district has a catchment area of over 800 hectares. Rainwater within the area was previously collected and discharged to nearby areas via natural gulley’s and riprap lined channels. Over time and together with intensive rain in recent years, the system had suffered from significant erosion and damage in adjacent areas, resulting in residential properties, agricultural land and even the neighbouring airport being affected.

CCX-M^® Installation: Transverse Laying, Manual Cutting, Overlapping and Jointing, Pegging within Anchor Trenches

16000m²

of CCX-M^® used for erosion control

4 Months

to install

665m²

installed per day on average

Solution

To mitigate the issues, a trapezoidal outfall channel was designed to collect runoff and drain it to the Kis-rakos river.

The channel lining was specified as CCT2^® (a Type II GCCM in accordance with GCCM Specification Standard ASTM D8364) a few years prior to execution of the project. However, at the time of ordering, CCX^®, a new Type II GCCM invented by Concrete Canvas Ltd could be proposed that met all the performance requirements of the design and tender specification. These benefits were enhanced by the wider width of CCX^® compared with CCT^® resulting in a greater rate of productivity and corresponding cost savings.

CCX-M^® insulated from cold weather conditions using plastic sheeting

CCX-M^® fully cured

Design & Installation

CCX-M^® Bulk Rolls specified
Channel substrate excavated and compacted
Transverse layup
Perimeter edges secured in anchor trenches with J-pegs, then backfilled with excavated material
Overlaps screwed and sealed
Intermediate anchoring with J-pegs
Hydration completed using a 2m³ bowser and protected with plastic sheeting in cold curing conditions

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Baffles covered in CCX-M^®

Channel Completion: Profile Adjustment, Offcut Use and Termination onto Culvert Headwall

Summary

In total, the installation was completed over a period of approximately 4 months. Due to the construction programme and earthworks required, CCX-M^® installation only took place 2 days per week and 8 hours per day. An average of 7 rolls (665m²) of CCX-M^® was laid per day.

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