Sika

Last updated February 10, 2026

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Surface hydrophobized recycled mineral aggregates: SikaRecent Research Landscape

High porosity in recycled aggregates leads to excessive water absorption and poor workability in concrete. Surface treatment with hydrophobizing agents stabilizes moisture demand to ensure predictable structural performance.

What technical problems is Sika addressing in Surface hydrophobized recycled mineral aggregates?

Unstable volumetric expansion

(20)evidences

High water absorption and irregular particle morphology in recycled powders cause rapid consistency loss. Improving flow characteristics ensures structural integrity and ease of application in cementitious systems.

High water absorption capacity

(13)evidences

Porous recycled concrete aggregates absorb excessive mixing water from fresh cementitious mixtures. Reducing this absorption prevents workability loss and improves the mechanical integrity of the final composite.