Set-retarding plasticizers for improving the effectiveness of gypsum-cement-pozzolan binders
The studies that were undertaken have made it possible to establish the influence of plasticizers and their complexes on the rheological, physical and mechanical properties of gypsum-cement-pozzolan binders based on low-grade gypsum and to measure the content required in the mixes.
1 Introduction
Materials and products based on gypsum-cement-pozzolan binders (GCPB) have not become widely used in the construction industry at present because it is necessary to use expensive input products with high contents of Portland cement (PC) and active mineral admixtures (AMA) to provide the required performance properties. The use of GCPB based on calcium sulfate hemihydrate with reduced contents of PC and AMA helps to increase competitiveness but there is a need for studies that are oriented towards improving its effectiveness by modifying the composition with chemical admixtures.
A...
