KAZAN STATE UNIVERSITY OF ARCHITECTURE AND ENGINEERING

Properties of building gypsum treated using the vortex layer apparatus

This article describes the influence of activation of building gypsum in the vortex layer apparatus on the specific surface, setting time, heat release, change in mineralogical composition and strength of the hardened gypsum paste. A way of evaluating the efficiency of the physical effects and of defining the mechanical activation effect is proposed.

1 Introduction

It is acknowledged that the physical processing of substances is often accompanied by increased intensity of the physico-chemical processes at the interphase boundary. This is known as mechanoactivation [1].

The influence of mechanoactivation on the physico-chemical properties of mineral binders and the performance properties of the artificial hardened products obviously depends on the type of binder. Mineral binders in which the initial structure formation is attributed to the flow of both topochemical and crystallization processes (e.g. Portland cement) feature the onset of...

Related articles:

Issue 5/2018 KAZAN STATE UNIVERSITY OF ARCHITECTURE AND ENGINEERING

Structural parameters and properties of fine-grained concrete on Portland cement, activated with plasticizers in vortex layer apparatuses

1 Introduction At present, the specific fuel costs per ton of cement clinker produced in the Russian Federation count among the highest in the world (about 120 kW/h). The fuel costs are determinative...

more
Issue 3/2022 WO 2022/036923 A1

Technological process for changing physical and chemical properties of new phosphogypsum by using calcium hydroxide

(22) 02.12.2020 (43) 24.02.2022 (57) A technological process for changing physical and chemical properties of new phosphogypsum by using calcium hydroxide, relating to the technical field of new...

more
Issue 11/2017 DMITRY MENDELEEV UNIVERSITY OF CHEMICAL TECHNOLOGY OF RUSSIA

Effect of fibers on the properties of gypsum-cement-pozzolanic binder

1 Introduction Products and structures made with binding materials are in widespread use nowadays. Meanwhile, modern applications call for the introduction of new structural and composite materials in...

more
Issue 5/2017 KAZAN STATE UNIVERSITY OF ARCHITECTURE AND ENGINEERING

The influence of thermally activated clay additives on the properties of composite gypsum binder

Finding affordable and locally accessible effective pozzolanic additives is a current problem. Solving this problem would enable an increase in the economic and environmental attractiveness of the...

more
Issue 5/2019 KAZAN STATE UNIVERSITY OF ARCHITECTURE AND ENGINEERING

The influence of water-repellent admixtures on the water resistance of hardened gypsum-cement-puzzolan paste based on low-grade gypsum

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...

more