Integral Waterproofing and Watertight Concrete

This seminar explains the ways water moves through concrete, compares hydrophobic and crystalline integral admixtures, and shows how mix design, crack control and joint details combine into a watertight structure. It closes with the tests and site controls that prove the concrete achieves what the specification asks.

Learning objectives

1. Explain how water moves through concrete by permeability, capillary absorption and through cracks and joints
2. Compare hydrophobic pore-blocking and crystalline permeability-reducing admixtures for non-hydrostatic and hydrostatic conditions
3. Design watertight concrete by combining mix design, crack control and joint details
4. Specify the tests and site controls that confirm watertight concrete, including water penetration and absorption tests

Modules0 of 5 done

1

How water moves through concretePore structure, transport mechanisms and the weak points that leak · About 8 min · 7 min video

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2

Permeability-reducing admixturesHydrophobic, pore-blocking and crystalline types and where each fits · About 8 min · 5 min video

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3

Designing watertight concreteType B protection, tightness classes, crack control and joint details · About 8 min · 5 min video

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4

Testing watertight concretePenetration, sorptivity and absorption tests and how to read them · About 8 min · 4 min video

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5

Site control and specificationDosing, placing, curing and a worked specification for a water tank · About 13 min · 6 min video

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Assessment10 questions · pass mark 80% · 2 attempts