(1) Condensation hardening is fast.
(2) The volume is slightly expanded during hardening. The cementitious materials such as lime and cement tend to shrink when hardened, while the architectural gypsum is slightly expanded (expansion rate is about 1%), which makes the surface of the gypsum product smooth and full, with sharp edges and corners, and does not crack when dry.
(3) After hardening, the porosity is large, and the apparent density and strength are low.
(4) The sound insulation performance is good.
(5) Good fire resistance. In the case of flint, the crystal water in the dihydrate gypsum, which is the main component of the gypsum hardening, evaporates and absorbs heat. The surface of the product forms a vapor curtain, which can effectively prevent the spread of fire.
(6) has a certain temperature regulation and humidity control
(7) Poor water resistance and frost resistance.
(8) Good processing performance. Gypsum products can be sawed, planed, nailed and eye-catching.
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