Study of Preparation and Performance of Gypsum-based Light Thermal Insulation Material

The gypsum product was prepared using FGD product by means of physical foaming method and chemical foaming method.Compressive strength,thermal conductivity and bulk density were tested to evaluate the performance of gypsum product.The result shows that when using physical foaming method,among the dosage of foam,W/C and dosage of HPMC,dosage of foam is the most important aspect to the performance,dosage of HPMC influences little.Performance of gypsum product such as the bulk density,strength can be influenced by dosage of foam while using chemical foaming method,the water cement ratio should be 0.7and the best dosage of foam is 6%.