Author name: Wiljee Blom

Wiljee Blom holds a National Diploma in Civil Engineering, is a Stage 3 Concrete Technologist, and has a postgraduate qualification in Business Management. He serves as Technical Manager at Penetron Africa, where he specialises in crystalline waterproofing technology and concrete durability solutions.

Construction workers placing reinforced concrete on a high-rise structure, illustrating concrete service life and whole-life carbon reduction.

Concrete Durability / Sustainability

Extending Service Life: The Most Effective Strategy for Reducing the Carbon Footprint of Concrete

Wiljee Blom / 5 August 2026

By Wiljee Blom, NDip (Civil Eng.), Stage 3 Concrete Technologist, Technical Manager, Penetron Africa Introduction Following discussions with Mota-Engil regarding […]

Concrete surface showing permeability and chemical exposure effects

Concrete Durability, Concrete Durability / Sustainability, Concrete Performance, Reactive Repair

Chemical Resistance in Concrete: Permeability, Penetration and Controlled Deterioration

Wiljee Blom / 31 March 2026

By Wiljee Blom, N-Dip (Civ. Eng.), Stage 3 Concrete Technologist, Technical Manager, Penetron Africa Chemical resistance in concrete is often

Concrete Performance

Concrete Performance: Why Real-World Testing Matters More Than Raw Lab Metrics

Wiljee Blom / 1 October 2025

By Wiljee Blom, N-Dip (Civ. Eng.), Stage 3 Concrete Technologist, Technical Manager, Penetron Africa In recent months, I’ve noticed increased