本发明涉及结构材料的多组分混合物用于制备砂浆用于填充含有硫酸钙无水石膏建立相邻的空腔中，用于产生一个相应的砂浆，砂浆这样及其使用的方法。 由于硫酸钙硬石膏的膨胀，已知的建筑材料混合物不适合含有硫酸钙硬石膏的地面。 本发明的多组分的建筑材料混合物，其包含与至少一种碱和/或用于激活潜在水硬性粘合剂sulphatic活化剂的潜在水硬性粘结剂和至少一种添加剂，活化剂组分（AK）水泥熟料中的游离碱组分（GK），和 至少一种其阴离子与钙阳离子形成小于10-8的溶解度产物的盐的组分（SK）。 由于钙/阴离子化合物的低溶解度，底土的硫酸钙无水石膏是在不是在溶液中的建筑材料混合物的基础上，用研钵接触和不膨胀，一较大的源压力的结果可以有效地避免。

The invention relates to a multi-component mixture of construction materials for preparing a mortar for filling a containing a calcium sulfate anhydrite building adjacent the cavity, a method for producing a corresponding mortar, the mortar as such and its use. Known building material mixtures are not suitable for calcium sulphate anhydrite-containing building grounds due to the swelling of the calcium sulfate anhydrite. The inventive multi-component building material mixture comprising a cement clinker free base component (GK) with a latent hydraulic binder and at least one additive, an activator component (AK) with at least one alkaline and / or sulphatic activator for activating the latent hydraulic binder, and a salt component (SK) at least one salt whose anions form with calcium cations a solubility which is less than 10 ^-8. Due to the low solubility of the calcium / anion compound, the calcium sulphate anhydrite of the subsoil is in contact with a mortar on the base of the building material mixture not in solution and does not swell, the result of a larger source pressure can be effectively avoided.