CALCIUM CARBONATE

Standard filler used in the preparation of polyester mortars in order to fill moulds by casting . It is used to thicken and reduce the cost. Its low Mohs hardness: 3 guarantees a low abrasion on the machinery and equipment used in the preparation of mortar. Comes completely dry so that moisture does not affect the hardening of polyester. Its density is 2.7 g/cm3. In spite of its appearance of white powder, mixed with resin gives rise to mortars of beige. To obtain white mortar it is necessary to add concentrated white at a rate of 5-8% of the weight of the resin.