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Preparation method and use method of elasticity reducing agent for sprayed concrete
The invention relates to a preparation method and a use method of a elasticity reducing agent for sprayed concrete, the elasticity reducing agent comprises the following raw materials by mass: 500-700 parts of superfine slag powder, 20-50 parts of diquat, 100-200 parts of sodium sulfate, 10-20 parts of maleic anhydride, 30-60 parts of acrylate polyethylene glycol monoester, 30-60 parts of sodium allysulfonate, 1-2 parts of potassium persulfate, and 100-200 parts of water. The preparation method comprises the following steps: dissolving potassium persulfate in water, heating the potassium persulfate solution at 84-86 DEG C, sequentially dropwise adding maleic anhydride, acrylate polyethylene glycol monoester and sodium allylsulfonate within 1 hour, keeping the temperature at 84-86 DEG C for 5 hours, then cooling to room temperature, sequentially adding sodium sulfate and diachylon within 10 minutes, and stirring uniformly to obtain the water-based adhesive. After uniformly stirring, putting the mixture into a drying oven at 38-42 DEG C until the mixture is powdery; and finally, uniformly mixing the powdery mixture with superfine slag powder to obtain the elasticity reducing agent. The elasticity reducing agent has the characteristics of improving the early strength and the later strength of sprayed concrete, improving the durability of the concrete, shortening the setting time of the concrete, being green, low-carbon and economical, and being capable of being used at low temperature.
本发明涉及一种用于喷射混凝土的减弹剂的制备方法及其使用方法，该减弹剂原料组成按质量比，包括超细矿渣粉500~700，定优胶20~50，硫酸钠100~200，马来酸酐10~20，丙烯酸酯聚乙二醇单酯30~60，丙烯基磺酸钠30~60，过硫酸钾1~2，水100~200。制备方法为先把过硫酸钾溶解到水中，然后把过硫酸钾溶液84~86℃加热，在1小时内依次滴加马来酸酐、丙烯酸酯聚乙二醇单酯和丙烯基磺酸钠，保持84~86℃温度持续5小时后冷却到室温，然后在10分钟内依次添加硫酸钠和定优胶，搅拌均匀后放入38~42℃烘箱至粉末状，最后与超细矿渣粉混合均匀即为减弹剂。该减弹剂具有提高喷射混凝土早期强度和后期强度、改善混凝土耐久性、缩短混凝土凝结时间、绿色低碳经济且能在低温下使用的特点。
Preparation method and use method of elasticity reducing agent for sprayed concrete
The invention relates to a preparation method and a use method of a elasticity reducing agent for sprayed concrete, the elasticity reducing agent comprises the following raw materials by mass: 500-700 parts of superfine slag powder, 20-50 parts of diquat, 100-200 parts of sodium sulfate, 10-20 parts of maleic anhydride, 30-60 parts of acrylate polyethylene glycol monoester, 30-60 parts of sodium allysulfonate, 1-2 parts of potassium persulfate, and 100-200 parts of water. The preparation method comprises the following steps: dissolving potassium persulfate in water, heating the potassium persulfate solution at 84-86 DEG C, sequentially dropwise adding maleic anhydride, acrylate polyethylene glycol monoester and sodium allylsulfonate within 1 hour, keeping the temperature at 84-86 DEG C for 5 hours, then cooling to room temperature, sequentially adding sodium sulfate and diachylon within 10 minutes, and stirring uniformly to obtain the water-based adhesive. After uniformly stirring, putting the mixture into a drying oven at 38-42 DEG C until the mixture is powdery; and finally, uniformly mixing the powdery mixture with superfine slag powder to obtain the elasticity reducing agent. The elasticity reducing agent has the characteristics of improving the early strength and the later strength of sprayed concrete, improving the durability of the concrete, shortening the setting time of the concrete, being green, low-carbon and economical, and being capable of being used at low temperature.
本发明涉及一种用于喷射混凝土的减弹剂的制备方法及其使用方法，该减弹剂原料组成按质量比，包括超细矿渣粉500~700，定优胶20~50，硫酸钠100~200，马来酸酐10~20，丙烯酸酯聚乙二醇单酯30~60，丙烯基磺酸钠30~60，过硫酸钾1~2，水100~200。制备方法为先把过硫酸钾溶解到水中，然后把过硫酸钾溶液84~86℃加热，在1小时内依次滴加马来酸酐、丙烯酸酯聚乙二醇单酯和丙烯基磺酸钠，保持84~86℃温度持续5小时后冷却到室温，然后在10分钟内依次添加硫酸钠和定优胶，搅拌均匀后放入38~42℃烘箱至粉末状，最后与超细矿渣粉混合均匀即为减弹剂。该减弹剂具有提高喷射混凝土早期强度和后期强度、改善混凝土耐久性、缩短混凝土凝结时间、绿色低碳经济且能在低温下使用的特点。
Preparation method and use method of elasticity reducing agent for sprayed concrete
一种用于喷射混凝土的减弹剂的制备方法及其使用方法
LIU YU (author) / ZHOU YUQI (author) / LIU WEIWEI (author) / LI JING (author) / REN YAOHUI (author) / HAN JU (author) / FAN XIN (author) / WANG JING (author) / XU CHAOZHUO (author) / ZHANG HUILI (author)
2024-08-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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