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Alkali-free setting accelerator and preparation process thereof
The invention discloses an alkali-free accelerator and a preparation process thereof, and relates to the field of concrete admixtures. A chelating agent, a stabilizing agent and a reinforcing agent are introduced into a traditional alkali-free setting accelerator, so precipitation and crystallization of early ettringite are promoted, microstructures of set cement and hydration products are regulated and controlled, initial setting and final setting time of cement is shortened, and early and later strength development of concrete is promoted. The alkali-free setting accelerator prepared in theinvention has the characteristics of no corrosion, no pollution, low mixing amount, remarkable enhancement effect and high cost performance, and has good stability.
一种无碱速凝剂及其制备工艺，涉及混凝土外加剂领域。本发明在传统无碱速凝剂中引入螯合剂、稳定剂、增强剂，促进早期钙矾石的沉淀结晶，调控水泥石及水化产物的微结构，缩短水泥的初凝和终凝时间，促进混凝土的早后期强度发展。采用本发明制备的无碱速凝剂具有无腐蚀、无污染、掺量低、增强效果显著、性价比高的特点，而且具有良好的稳定性。
Alkali-free setting accelerator and preparation process thereof
The invention discloses an alkali-free accelerator and a preparation process thereof, and relates to the field of concrete admixtures. A chelating agent, a stabilizing agent and a reinforcing agent are introduced into a traditional alkali-free setting accelerator, so precipitation and crystallization of early ettringite are promoted, microstructures of set cement and hydration products are regulated and controlled, initial setting and final setting time of cement is shortened, and early and later strength development of concrete is promoted. The alkali-free setting accelerator prepared in theinvention has the characteristics of no corrosion, no pollution, low mixing amount, remarkable enhancement effect and high cost performance, and has good stability.
一种无碱速凝剂及其制备工艺，涉及混凝土外加剂领域。本发明在传统无碱速凝剂中引入螯合剂、稳定剂、增强剂，促进早期钙矾石的沉淀结晶，调控水泥石及水化产物的微结构，缩短水泥的初凝和终凝时间，促进混凝土的早后期强度发展。采用本发明制备的无碱速凝剂具有无腐蚀、无污染、掺量低、增强效果显著、性价比高的特点，而且具有良好的稳定性。
Alkali-free setting accelerator and preparation process thereof
一种无碱速凝剂及其制备工艺
LIU HUI (author) / ZHANG BIAO (author) / ZHENG JINDE (author)
2020-09-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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