Colossal Concrete Products' rail precast concrete expertise flows into water infrastructure upgrades

As South Africa begins to rehabilitate and repair ageing water infrastructure, Colossal Concrete Products (CCP), Africa's largest concrete railway sleeper manufacturer, says its comprehensive range of precast concrete products can provide meaningful solutions.

"Drawing on decades of experience in high-load, high-durability concrete manufacturing for the rail sector, CCP has the technical expertise, manufacturing precision and quality assurance to support the creation, maintenance and rehabilitation of urgently needed water systems," says CCP Chief Operating Officer, Mmapitso Kiewiet, who welcomed commitments made during the 2026 State of the Nation Address (SONA), and allocations for water infrastructure in the 2026 Budget.

The renewed focus on water infrastructure ties in with World Water Day on March 22. This underscores the universal right to safe water and sanitation.

CCP has produced prestressed concrete railway sleepers and related products for freight rail and the Gautrain. The company has already supplied large water projects in Mpumalanga and Gauteng, and recently provided 1,300 metres of its 2,250mm diameter pipes to divert grey water at one of South Africa's newest power stations.

An example of cross-sector application is the SATS railway culvert, originally designed for the South African railways to channel water beneath railway lines, while accommodating substantial fill heights and axle loads.

CCP Technical Sales and Service Manager, Werner Booyens says that these were engineered to withstand dynamic rail loading and severe environmental conditions. "A culvert system, commonly referred to in industry as an S-Class culvert, has subsequently been developed to meet modern design requirements in accordance with SANS 986. These systems are widely used in the mining and private sectors - as well as on national roads, where their enhanced structural capacity and durability make them well suited for storm water management, mine water control and municipal drainage applications," Booyens adds.

"Culverts manage and reduce flooding by safely conveying excess water away from roads, railways, developments and natural water courses. When properly designed, installed and maintained, they minimise flood-related damage. Without them, those structures act like dams, leading to upstream flooding, increasing the risk of buildings, foundations and infrastructure being submerged.

In addition, these culverts control flow direction, guiding water along a planned route, preventing random overland flow which can erode roads and embankments and undermine foundations. They also decrease damage to services and pavements by reducing erosion and scour," he explains.

CCP has identified several products to assist with water sector upgrades:

According to Booyens, these products are manufactured in a controlled factory environment using advanced technology and purpose-built equipment. Precision moulds ensure consistent dimensions.

"High-quality raw materials are carefully selected, batched and mixed to strict specifications to ensure consistent strength, durability and performance. The concrete is compacted using modern vibration techniques which eliminate voids and achieve a dense, impermeable concrete product.

Steel reinforcement, where required, is accurately positioned to provide structural integrity and resistance to external loads and ground pressures. Throughout the production process, dimensional tolerances, wall thickness and surface finish are continuously monitored. The pipes are then steam cured under controlled conditions to achieve early optimal strength and long-term durability," he advises, adding that these tightly controlled manufacturing processes produce pipes with high load-bearing capacity, low permeability and strong resistance to abrasion, chemical attack and weathering.