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Use of a solidification accelerator for a dry mortar mixture, a process for preparing said solidification accelerator and a dry mortar mixture
Use of a solidification accelerator for a dry mortar mixture, a process for preparing said solidification accelerator and a dry mortar mixture
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机译：固化促进剂在干灰浆混合物中的用途，制备所述固化促进剂和干灰浆混合物的方法
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摘要
The invention relates to a setting accelerator for a dry mortar blend, the setting accelerator being in the form of a powder comprising calcium nitrate and having a water content between 0.1% and 20%. The invention furthermore relates to a process for producing such a setting accelerator, wherein either prills and/or granules comprising calcium nitrate and a different nitrate salt are processed forming a powder comprising calcium nitrate and the different nitrate salt and having a water content of higher than 5% and lower than 20%, either an aqueous solution at least comprising dissolved calcium nitrate is spray dried at a temperature between 150° C. and 250° C., forming a powder comprising at least calcium nitrate and having a water content between 0.1% and 20%, the powder serving as the setting accelerator. The invention also relates to a dry mortar blend comprising at least a cement, sand and a setting accelerator according to the invention and to a mortar paste comprising the dry mortar blend according to the invention which is mixed with water.
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