Shengmao HZS60 Belt Concrete Batching Plant Powers Inter-Island Bridge Construction in Sri Lanka

Shengmao Machinery has successfully manufactured, delivered, installed, and commissioned a high-efficiency HZS60 Belt-Conveyor Concrete Batching Plant for a landmark inter-island bridge construction project in Sri Lanka.

After conducting comprehensive factory audits and technical evaluations across multiple Chinese equipment manufacturers, the client chose Shengmao Machinery for our superior engineering flexibility, heavy-duty build quality, and customized retrofit capability. To help the client minimize upfront capital expenditure without compromising production standards, Shengmao engineers customized the feeding and control interfaces to seamlessly integrate the customer’s existing legacy cement silo. The plant has passed full-load commissioning under the guidance of Shengmao’s on-site service engineers and is currently producing high-grade structural concrete for the bridge foundations and piers.

1. Project Overview at a Glance

2. Client Background & Project Demands

The client is a leading civil engineering contractor in Sri Lanka responsible for constructing a strategic inter-island bridge designed to enhance regional connectivity and maritime transport.

Bridge engineering in coastal marine environments enforces rigorous concrete performance standards—demanding superior compressive strength (C30–C50), strict slump consistency, and minimal permeability against chloride and sulfate corrosion.

Key Project Requirements & Challenges:

Stringent Concrete Homogeneity: Marine bridge foundations require rapid, uniform mixing without material segregation.

Cost Optimization (Legacy Asset Reuse): The client had functional cement silos from a previous project and wanted to reuse them to reduce capital outlay. Other suppliers refused or lacked the engineering adaptability to guarantee seamless integration.

Continuous High-Intensity Pouring: Massive bridge pier and pile cap casting demanded uninterrupted concrete batching with zero downtime.

Harsh Coastal Climate: High humidity and salt-spray required robust anti-corrosion protection across all structural steelwork and electrical enclosures.

3. Why the Client Chose Shengmao Machinery

After inspecting several major Chinese machinery exporters, the client's engineering delegation awarded the contract to Shengmao Machinery based on four decisive factors:

Customized Retrofit Engineering: Instead of pushing expensive new silo packages, Shengmao’s technical team designed custom screw conveyor angles, flange connections, and electrical interlocking to adapt the client’s existing silos, saving substantial procurement costs.

Heavy-Duty JS1000 Twin-Shaft Mixer: Features high-chromium wear-resistant alloy blades and liner plates (65+ HRC), thick reinforced drum walls, and multi-layer floating shaft-end seals that prevent slurry leakage during continuous heavy-duty mixing.

High Batching Accuracy: Independent high-precision load cells for aggregates, cement, water, and chemical additives ensure formula errors remain within ±1%, fully complying with international bridge building standards.

Responsive Turnkey On-Site Support: Shengmao provided comprehensive on-site engineering supervision in Sri Lanka, from foundation alignment to mechanical erection, electrical wiring, and local operator certification.

4. On-Site Installation, Retrofit & Commissioning

Shengmao Machinery deployed senior mechanical and electrical engineers directly to the jobsite in Sri Lanka:

Civil & Foundation Verification: Guided anchor bolt layout and verified foundation load capacities for both the new mixing tower and the legacy silo footings.

Mechanical & Structural Erection: Supervised the crane hoisting and torque tightening of the mixing tower, aggregate bins, and enclosed belt conveyor.

Retrofitting & System Integration: Inspected, modified, and connected the client’s legacy silos with new screw conveyors and pneumatic safety components.

Calibration & Trial Batching: Calibrated weighing sensors with standard test weights and conducted trial batching using local sand, gravel, and marine cement formulas.

Knowledge Transfer: Provided hands-on training to local machine operators and maintenance crews on daily maintenance schedules and safety procedures.

5. Installation pictures