Fiberglass mesh is a commonly used thermal insulation reinforcement material for modern building exterior walls. Breaking strength and alkali resistance are important properties of constant fiberglass mesh. The breaking strength of fiberglass cloth is inseparable from the glass count or weight. Domestic product standards require that the weight of fiberglass mesh cloth per square meter must be more than 160g.
In the process of using fiberglass mesh, it is necessary to improve the breaking strength standard. Especially polymer cement plaster mortar with higher cement content and cement strength grade. The damage caused by these things to the fiberglass mesh is not only chemical corrosion, but also the crystallization pressure corrosion of calcium hydroxide and calcium aluminate. At the same time, the high water absorption rate of mineral materials also hurts fiberglass mesh. Experiments have shown that after soaking in distilled water, the strength of fiberglass mesh will lose about 30%.
Since cement-free pure polymer plastering mortar has no alkali corrosion and low water absorption, the fiberglass mesh cloth can function normally in it for a long time, which is undoubtedly very safe for the long-term crack resistance of the protective surface layer.
