Tg

Thin Repair Mortar: Balancing HPMC Dosage & RDP Tg

By |2026-08-18T06:08:30+00:00August 18th, 2026|Industry knowledge|

Thin repair mortar is typically applied at a thickness of just 3 to 10 millimeters. This narrow range imposes extreme demands. It must bond firmly to the old substrate to prevent debonding, yet stay flexible enough to absorb shrinkage stress and temperature movement without cracking. One property often comes at the expense of the other.

RDP Tg: The Key to Cement Mortar Flexibility

By |2026-06-17T06:07:02+00:00June 17th, 2026|Industry knowledge|

rittleness and cracking have long been major concerns in cement‑based mortars. Adding redispersible polymer powder (RDP) greatly improves flexibility, yet the actual performance can vary widely. The root cause is often the glass transition temperature (Tg) of the RDP. Tg is not just a technical number. It directly determines whether the polymer film stays soft

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