WO 2015/062749 A1

Water-resistant binder based on beta-calcium sulphate hemihydrate

(22) 03.07.2014

(43) 07.05.2015

(57) The invention relates to a binder composition comprising (a) beta-calcium sulphate hemihydrates (b-CaSO₄ ∙ 0.5 H₂O), (b) Portland cement and (c) zeolite, and to construction chemicals which contain the binder composition.

(71) Henkel AG & Co. KGAA, Henkelstr. 67, 40589 Duesseldorf (DE)

(84) ARIPO (BW GH GM KE LR MW MZ NA RW SD SL SZ TZ UG ZM ZW), Eurasian (AM AZ BY KG KZ RU TJ TM), European (AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR), OAPI (BF BJ CF CG CI CM GA GN GQ GW KM ML NE SN TD TG)

Issue 2015-7-8 EP 2 876 094 A1

Cement and calcium sulphate based binder composition

(22) 03.04.2014 (43) 27.05.2015 (57) The invention concerns a composition containing a) 2 to 80 weight % of Ordinary Portland Cement with respect to the total weight of the composition b) 2 to 80...

Issue 2020-10 UNIVERSITY OF SIEGEN

Investigation of hydration mechanisms of alpha and beta hemihydrate

1 Introduction Calcium sulfate hemihydrate [CaCO4???0.5H2O(s)] can be found naturally in very dry climate regions in Egypt, Australia, Death valley and Kuwait as bassanite, but in the presence of...

Issue 2018-3 UNIVERSITY OF SIEGEN

Hydration investigation of α-calcium sulphate hemihydrates is influenced by waste water from the foundry sand regeneration process

1 Introduction Foundries use sands to make moulds and cores for metal casting. In this process, new sands are mixed with a diversity of inorganic and organic binding agents such as clay or organic...

Issue 2020-11-12 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...

Issue 2022-8 WO 2022/194499 A1

A process for the continuous preparation of alpha-calcium sulphate hemihydrate and a particulate gypsum

(22) 22.02.2022 (43) 22.09.2022 (57) The present application describes a process for the continuous production of alpha-calcium sulphate hemihydrate, the process comprising the steps of: providing...

ZKG 7-8/2015