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73

CONSTRUCTION WORLD

SEPTEMBER

2015

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PRODUCTS AND SERVICES

Realising the restrictive work environment on this project,

Delf Consulting Engineers had no hesitation in specifying

Sika’s Sikadur-Combiflex SG system. With its international

approval for drinking water suitability, the Sikadur-Combiflex SG

system was used to seal all construction and expansion joints

within the water retaining structures, including all water tanks

and clarifiers.

Sikadur-Combiflex SG is a high performance joint sealing system

consisting of amodified, flexible Polyolefin (FPO) waterproofing tape

and Sikadur-31 CF Normal, an advanced thixotropic, moisture-tol-

erant, structural two-part adhesive based on a combination of epoxy

resins and special fillers. When fixed to a joint, the Sikadur-Combiflex

SG system allows for irregular and high movement in more than

one direction whilst still maintaining a high quality seal.

Working under extremely difficult conditions that included

confined spaces and rigid safety requirements; contractor Liviero

Civils installed 2 000 metres of the Sikadur-Combiflex SG system.

Since it is extremely flexible, easy to install, and provides excellent

adhesion on either dry or damp concrete surfaces, it was the ideal

product for this challenging situation.

For highly effective chemical protection of the pump stations,

chemical dosing areas and clarifier launders at the plant, Sika’s

Sikagard-63 N (2 000m

2

) was specified. This 100% solids, two-part

epoxy resin coating, designed for normal to aggressive chemical

environments, is simple to apply, liquid-proof and solvent-free.

Since the application of these Sika products was a high priority

project that could not afford any delays, a restrictive time schedule

was imposed. Unfortunately, severe weather conditions prevailed

which caused major delays.

With increased emphasis on protection of the environment,

Aveng Water, who constructed this plant, is playing an important

role in combating the problem of acid mine drainage (AMD), while

the use of Sika’s products ensures the durability of the plant and

thereby the provision of millions of litres of potable water.

Johannesburg-based Fedglass successfully completed its scope

of the project by drilling 12 000 holes, each 22 mm in size, using

equipment supplied by Diamond Products – a leading specialist in

the manufacture, assembly and sale of diamond tools and equipment for

industrial applications.

Fedglass managing member Jürgen Ewert notes that the company

did not encounter any major challenges, thanks to the quality of the 120

Diamond Products RC35 core barrels and three Shibuya 1011 core drills

being used throughout the duration of the project.

“The team of 15 Fedglass experts were able to successfully drill all the

holes problem-free, thanks to the reliability of the equipment. The Shibuya

core drills were highly-impressive, and proved to have an extended oper-

ational lifespan, compared to similar products in the market,” he states.

The Shibuya range of core drilling machines are distributed exclusively

in Southern Africa by Diamond Products. Director Brian Clark points out

that the Shibuya core drill is lightweight and easy to handle. “It is also high-

ly-durable, making it ideally-suited to numerous applications.”

Shibuya core drills also come standard with a water collection ring to

contain any water that may be spilled while drilling. This excess water can

be collected by a vacuum cleaner. Another user-friendly aspect of the drill is

that there are no gears, and the user simply has to turn the drill on and off.

Clark adds that the RC35 core barrels are used in drilling to make clean

holes quickly and precisely in concrete, masonry, asphalt and stone. “They

are highly cost-efficient, and require little clean-up or patching compared to

other methods of making openings in floors, walls, ceilings or pavements.”

Given the success of this project, Ewert is confident of the future outlook

for Fedglass. “Our high-quality work and competitive pricing have enabled

us to grow from strength-to-strength across Southern Africa. With reliable,

value-adding partners such as Diamond Products, I believe we can increase

market share, particularly in frameless glass applications,” he concludes.

MINE WATER

RECLAMATION

Sika recently supplied its world renowned

products to seal and protect a huge, newly

constructed Mine Water Reclamation Plant

(MWRP) in Middleburg, Mpumalanga.

Although not the first such plant in this coal

mining area, it is the largest of its kind and

will purify millions of litres of toxic mine

water that will be safely returned to local

municipal waterways.

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GETTING TO THE CORE

Glass and stainless steel products specialist

Fedglass has successfully installed 2 500 m of

balustrading and 200 privacy screens at a high

rise building in Mozambique, which consists of

commercial offices and residential apartments.

RC35 bits.

The Shibuya range of core drilling machines are distributed exclusively in

Southern Africa by Diamond Products.

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