The influence of water-repellent admixtures on the water resistance of hardened gypsum-cement-puzzolan paste based on low-grade gypsum
This article examines the influence of a variety of water-repellent admixtures on the water resistance of hardened gypsum-cement-puzzolan paste based on low-grade gypsum and studies special aspects of their application in combination with plasticizers. The required content of the admixtures investigated as a percentage of the binder is measured by experimental mathematical design techniques.
1 Introduction
The widespread use of gypsum-cement-puzzolan binder (GCPB) is a result of its low cost, environmental friendliness and the high performance properties of the products based on it. GCPB is also used during the production of partition panels, floors, three-dimensional utility blocks, finishing materials and other products [1, 2]. It is noted that widespread use of products based on gypsum, which includes GCPB, is limited because of their low water resistance. P.P. Budnikov and V.N. Yung consider that the main reason for the low water resistance is the high solubility of gypsum...
