RU 2 551176 C1

Method of preparation of gypsum cement pozzolan mix

(22) 14.04.2014

(45) 20.05.2015

(57) Method of obtaining of gypsum cement-puzzolan mix includes hydroactivation of portland cement with surfactants for 1 min. with the subsequent adding of gypsum and puzzolan component and repeated hydroactivation within 2 min., in the rotor and pulsation device with a shaft speed of rotation no less than 5000 rpm, the surfactant is a mix of polymeric polycarboxylated ether “Glenium® 115”, the setting and cuing time regulator “BEST-TB” and the organic silicon compound “N-octyl sulfosuccinate” in the ratio 1:0.3:0.07, the puzzolan component is a metakaolin with the ­hydraulic activity no less than 1000 mg/g, at the following ratio of components, by weight%: semiwater gypsum 55.8-56.5, portland cement 14.3-15.4, the named surface-active substance 1.1-1.9, metakaolin 2.5-3.3, water - the rest. Effect: increase of frost resistance, increase of time of mix curing, getting self-sealing ability, increase of flexural and compression strength, increase of water resistance and decrease of water absorption.

(73) Federal’noe gosudarstvennoe bjudzhetnoe obrazovatel’noe uchrezhdenie vysshego professional’nogo obrazovanija “Kazanskij gosudarstvennyj arkhitekturno-stroitel’nyj universitet” KGASU, Vladimir Sergeevich Izotov, Rustem Khinifovich Mukhametrakhimov, Kazan (RU)

x

Related articles:

Issue 5/2021 MENDELEEV UNIVERSITY OF CHEMICAL TECHNOLOGY | BAUHAUS-UNIVERSITÄT WEIMAR

Composite gypsum binders with improved water resistance

1 Introduction In recent years the domestic industry has been in need of environmentally friendly and safe construction materials that can be produced at minimum energy consumption. These materials...

more
Issue 11/2018 KAZAN STATE UNIVERSITY OF ARCHITECTURE AND ENGINEERING

Set-retarding plasticizers for improving the effectiveness of gypsum-cement-pozzolan binders

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...

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
Issue 11-12/2020 KAZAN STATE UNIVERSITY OF ARCHITECTURE AND ENGINEERING

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

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...

more
Issue 12/2018 KAZAN STATE UNIVERSITY | TON DUC THANG UNIVERSITY

Effect of calcined clays on the physical-mechanical properties of hardened Portland cement pastes

1 Introduction Seven to eight thousand years ago, calcined clays in the form of flour from ceramic bricks and tiles were the first variety of reactive mineral additives for lime, gypsum and materials...

more