All OBTEGO silicates are free of VOC (volatile, organic substances) and can therefore be used in ecological buildings. Whether you are a grinding company looking for a silicate to harden the floor between diamond grinding steps or you want to apply a surface finish on a power troweled industrial floor, you are at the right place at OBTEGOAG. Silicationof fresh concrete - useful? Based on results of internal studies, regarding the functionality of silicates on concrete it makes more sense to wait. A later application leads to a better hardening, densification and durability of the concrete floor. Application tests showed, which improvements concerning abrasion resistance and capillary water absorption can be expected. Within the study fresh and hardened concrete, were treated with silicate. Even during the silicate application, it becomes clear that the silicate absorption capacity increases with the degree of drying of the concrete. The treated fresh concrete indicates a clear disadvantage when it comes to abrasion resistance. Due to less absorption of silicate the hardening process is not ideal performing and therefore the concrete is weaky. Measurements clearly showa higher abrasion on fresh treated concrete compared to hardened concrete. 48 0 50 100 150 200 250 300 350 400 Sodium silicate Abrasion after 300 cycles [µm] Abrasion of fresh concrete to hardened concrete (14 days) Abort after 100 cycles reference fresh concrete solid concrete 0 100 200 300 400 500 600 700 Sodium silicate Silicate intake [ml/m²] Silicate absorption capacity of fresh concrete to hardened concrete (14 days) fresh concrete solid concrete 127% increase 73% reduction
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