本文讨论了多种物质对混凝土养护的强度、保水性的影响 ,优化筛选出ND -2 1型混凝土养护剂和喷养护剂的最佳时间 ,并与传统养护方法的实验室保水性、现场混凝土强度、设计强度等进行对比试验。由于ND -2 1型混凝土养护剂含有憎水性强的蜡及与混凝土亲合性好的助剂 ,因此使用ND -2 1型混凝土养护剂养护具有用量少、混凝土强度高、省时、省水、省工、无污染等特点 ,可完全替代传统养护方法 ,并具有良好养护效果和显著的经济效益及社会效益 This article discusses the effect of multiple substances on the strength of concrete curing, water retention, optimization of screening out the best time for ND -2 1 concrete curing agent and spray curing agent, and with traditional conservation methods of laboratory water retention, on-site concrete Strength, design strength and other comparative tests. As ND -2 1 type concrete curing agent contains a strong hydrophobic wax and good affinity with concrete additives, so the use of ND -2 1 type concrete curing agent curing with less dosage, high strength concrete, time-saving, provincial Water, labor, pollution-free and so on, can completely replace the traditional conservation methods, and has good conservation and significant economic and social benefits