KST Holland

THE OPTIONS
Various methods have been used and tried in the past, these include :
• Overdesign of Sewerage Systems, including greater wall thickness in pipes and tunnels and the provision of ventilation shafts and machine ducted air to reduce and remove the Hydrogen Sulphide gas.
These methods are very expensive and are only partially effective.
• Bacteriocides : These are added into concrete, using a special process of Octration with the express aim of preventing bacteria forming on the concrete surface. The effect is strictly limited and is practically ineffective, being, at best, a palliative measure.
• Provide special concretes : [Calcareous aggregates, Type 5 Seawater cement, Hi Alumina cement such as Ciment Fondue.] These can sometimes delay the onset of serious Hydrogen sulphide corrosion [in case of calcareous aggregate] but they are purely palliatives, in the medium term.
• Liquid applied coatings : Such as Bitumens, Coal-Tar epoxies and even expensive urethane elastomers.
These all eventually fail owing to the phenomenon of ‘pin-holing’ that occurs when coatings are sprayed onto a surface. These small asperities in the body of the applied film provide an easy route to the concrete substrate for the small Hydrogen Sulphide molecule. Also concrete provides a difficult and uneven substrate to paint or coat, with unviable surface tension effects..

The complete brochure can be downloaded here

KST CPL Holland

KST Concrete Protective Linings

With the growing demand for reliable and hygienic drinking and sewage water infrastructures, policy makers- such as Governments, Municipalities, United Nations, World health Associations, Worldbank, etc.- increasingly decide to opt for the application of concrete pipes provided with protective linings inside, because of the sustainability and lifespan of such pipes (> 100 years.)
KST CPL Holland has over 35 years experience with linings. Our clients are Concrete Pipe Manufacturers, who apply Protective Lining in open trench pipes and jacking pipes as requested by their clients and as prescribed by the involved Consultants in the specifications.
KST CPL Holland has been delivering HDPE and PVC Linings worldwide since 1976, in almost any quantity and with the option of different shapes and thickness. Visit our website for more details: www.kstholland.com..

The complete brochure can be downloaded here