KAZAN STATE UNIVERSITY OF ARCHITECTURE AND ENGINEERING

Structure and formation properties of a water-resistant compound binder based on calcium sulfate β-hemihydrate

All authors

1 High-power (A – x500, B – x800) electron micrographs of the original hardened GCPP

All authors

2 High-power
(A – x500, B – x800) electron micrographs of the modified hardened GCPP

3 Thermogram of the original hardened GCPP

4 Thermogram of the modified hardened GCPP

This article discusses some special aspects of the hydration and structural formation of water-resistant gypsum-cement-pozzolan composite binders based on calcium sulfate β-hemihydrate modified by a group of mineral and chemical admixtures. The pore structure factors of the products based on these binders were measured and the phase compositions of the new hydration growths were studied.

1 Introduction

The main problem when mixing gypsum binder (GB) and Portland cement (PC) lies in enabling a stable structure to form during their co-hardening. Another important aspect is the problem of obtaining the required water resistance value without an appreciable increase in PC content in the mix or its dilution by means of excessive addition of active mineral admixture (AMA). It is impossible to produce competitive and durable materials based on these binders without solving these major problems.

A large body of research in this field [1-6] carried out by Volzhenskij A.V., Fischer...

TEXT Galautdinov Albert¹, Mukhametrakhimov Rustem², Shebanova Svetlana³
¹Ph.D. in Engineering Science, Senior Lecturer of “Building Technologies” Department, Kazan State University of Architecture and Engineering, Kazan/Russia
²Ph.D. in Engineering Science, Associate Professor of “Building Technologies” Department, Kazan State University of Architecture and Engineering, Kazan/Russia
³Master of Engineering and Technology, Chief Specialist of Central Territorial Division of State Public Institution “Main Investment and Construction Administration of the Republic of Tatarstan”

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