In this study, lime-gypsum-cement composite materials were produced in which fixed cement amount was used (40%) and gypsum and lime materials were used in varying proportions. Produced composite materials were exposed to sulphate solutions and investigated how they were affected by these environments. In the mixtures prepared for the production of the samples; CL 80-S calcium lime, satin plaster and CEM II/B-M (P-LL) 32.5 R type cement were used. Samples placed in the moulds were kept in laboratory for 2 days, and then samples taken from the moulds. After that, these samples were exposed to water curing for 7 days. 2.5% and 5% MgSO4 and Na2SO4 solutions were used for aggressive media tests of the produced composite materials. Samples which were cured in 7 days water were kept in the related solutions until 90 days of age. As a result, the composite materials were less affected by the Na2SO4 effect, however, the compressive strength of the samples exposed to Na2SO4 solution was 8.8-12.2 MPa and It was determined that the compressive strength of the samples exposed to MgSO4 solution varied between 4.1 and 9.1 MPa. In the case of composite materials which have been exposed to MgSO4 effect, a better compressive strength value is obtained from the samples according to the reference samples when 30% lime is used.