Development of Composite Binders’ Compositions for Additive Technologies in Low-Rise Building Construction

One of the new advanced technologies in low-rise buildings construction is 3D–printing technology, for development of which creating efficient materials with the required adjustable properties on the basis of hydration composite with micro-, ultra- and nanodispersed mineral admixtures and extenders in combination with hyper- and superplasticizers is necessary. The paper considers the opportunity of obtaining composite binders and quick-setting composite gypsum binders for this purpose. As an active mineral admixture in the binders the opoka marl was used, which demonstrates hydraulic activity at its interaction with Ca(OH)₂ with forming low-basic hydrous calcium silicates and other formations. In the process of binders’ structurization with mineral admixtures Ca(OH)₂ is fixed and excluded from the reaction. Hydrolysis of clinker minerals is catalyzed; simultaneously the amount of low-basic hydrous calcium silicates like CSH(B) is increased, which positively influences the properties of hardened binders. The findings of the carried-out research confirm the possibility and feasibility of using the OM as an active mineral admixture in compositions of CB and CGB, which would improve their performance characteristics in general, provide quick strength gain of binders at the initial setting time, except for the subsequent self-destruction of the structure due to crystallization pressure.