新型ANS低碱液体速凝剂的研制与应用

摘要

Preparation technology and properties of ANS liquid low alkaline accelerator were introduced in this paper. Synergistic effect of different organic materials on accelerator system and the adaptability with different cements were test-ed. All results show that the adaptability of ANS liquid low alkaline accelerator is good, and it can guarantee the early and late compressive strength of cement mortar. This product has been used in shotcrete of Hafengjing tunnel in Hu-zhang railway, which achieved good effect in engineering.%介绍了ANS低碱液体速凝剂的制备工艺及性能特点，研究了有机辅料对速凝剂体系的协同增效作用，测试了ANS低碱液体速凝剂与不同品牌水泥的适应性。结果表明，ANS低碱液体速凝剂具有良好的水泥适应性，并能保证水泥砂浆的早期和后期抗压强度。该产品已在呼张铁路哈风井隧道喷射混凝土施工中应用并取得了良好的工程技术效果。