Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Concrete strengthening auxiliary
The invention discloses a novel concrete strengthening auxiliary. A preparation method of the concrete strengthening auxiliary comprises the steps that polyether macromonomers and sulfonate are added to water, the temperature is increased to 60 DEG C, and sulfonation is conducted for half an hour; an initiating agent is added, an acrylic monomer is dropwise added during stirring, the time of dropping is controlled to range from 0.5 h to 1 h, and after dropping addition is completed, the temperature is kept constant for one hour; the temperature is decreased to 45 DEG C, alkylol amine is dropwise added, the time of dropping is controlled to range from 0.5 h to 1 h, after dropping addition is completed, the temperature is kept constant for one hour, and a finished product is obtained. The mass ratio of the sulfonate to the polyether macromonomers is 1 to 3-3.5, and the mass ratio of the initiating agent to the polyether macromonomers is 1 to 2.5-3. The whole concrete performance is improved, and meanwhile it is found that a specific formula has an extremely significant and unexpected effect of excellently improving the shrinkage resistance performance of concrete.
Concrete strengthening auxiliary
The invention discloses a novel concrete strengthening auxiliary. A preparation method of the concrete strengthening auxiliary comprises the steps that polyether macromonomers and sulfonate are added to water, the temperature is increased to 60 DEG C, and sulfonation is conducted for half an hour; an initiating agent is added, an acrylic monomer is dropwise added during stirring, the time of dropping is controlled to range from 0.5 h to 1 h, and after dropping addition is completed, the temperature is kept constant for one hour; the temperature is decreased to 45 DEG C, alkylol amine is dropwise added, the time of dropping is controlled to range from 0.5 h to 1 h, after dropping addition is completed, the temperature is kept constant for one hour, and a finished product is obtained. The mass ratio of the sulfonate to the polyether macromonomers is 1 to 3-3.5, and the mass ratio of the initiating agent to the polyether macromonomers is 1 to 2.5-3. The whole concrete performance is improved, and meanwhile it is found that a specific formula has an extremely significant and unexpected effect of excellently improving the shrinkage resistance performance of concrete.
Concrete strengthening auxiliary
ZHANG HAITANG (Autor:in) / ZHU SHIRONG (Autor:in) / ZHU WEILIANG (Autor:in) / BIAN SHUNFA (Autor:in)
03.02.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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