DRY MIXTURES

[:ru]Мюллер М.[:en]Markus Müller[:] [:ru]компания Sika Services AG, Цюрих, Швейцария[:en]Sika Services AG, Zurich, Switzerland[:]

[:ru]Ланг Г.[:en]Gerhard Lang[:] [:ru]компания Sika Deutschland, Леймен, Германия[:en]Sika Deutschland GmbH, Leimen, Germany[:]

Alitinform №4-5 (40) 2015 г. 86-93 p.

Abstract

Today’s European dry mortar industry is a competitive market characterized by strong price pressure. At the same time, modern dry mortars have to meet the highest quality standards and strict health, safety and environmental regulations. To fulfil this, the targeted selection of suitable raw materials and the knowledge of their performance and desired and undesired interconnections is required. With this in mind various commercially available polycarboxylate ether (PCE) based superplasticizers are evaluated. The evaluation includes three newly developed PCE powders. The selected application systems require excellent flow characteristics: grouts and self-levelling compounds based on cement, gypsum and ternary binder systems. Recommendations are given for the targeted selection of the appropriate additives and formulation adjustments according to their intended purpose.

Key words:

dry-mix additive; superplasticize; cement; anhydrite; self-levelling underlayment; screed; grout; polycarboxylate; melamine; REACH; VOC; formaldehyde