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Concrete water reducing agent as well as preparation method and application thereof
The invention discloses a concrete water reducing agent as well as a preparation method and application thereof. The preparation method of the concrete water reducing agent comprises the following steps: adding 20-30 parts by weight of lignosulfonate, 10-20 parts by weight of water and 0.8-2 parts by weight of a catalyst into a reaction kettle, heating the reaction kettle to 45-55 DEG C, stirringfor 15-18 minutes; adding 5-10 parts by weight of an acetate solution with a mass concentration of 30-45% into the reaction kettle, stirring for 8-12 minutes at a temperature of 60-70 DEG C; adding 10-15 parts of sodium sulfate, keeping the temperature of the reaction kettle at 80-100 DEG C for 3-4 hours; and reducing the temperature of the reaction kettle to the room temperature to obtain the concrete water reducing agent. The lignosulfonate is modified, so that the comprehensive performance of the concrete water reducing agent is enhanced, and the performance of concrete is improved.
本发明公开了一种混凝土减水剂及其制备方法和应用，混凝土减水剂制备时包括以下步骤：在反应釜中加入木质素磺酸盐、水以及催化剂，以重量份数计，所述木质素磺酸盐为20～30份、水为10～20份以及催化剂为0.8～2份，反应釜升温至45～55℃，并搅拌15～18分钟；向反应釜中加入重量份数为5～10份且质量浓度为30～45％的乙酸盐溶液，反应釜温度为60～70℃，搅拌8～12分钟；加入10～15份硫酸钠，反应釜温度为80～100℃，保持3～4小时；将反应釜温度降低至室温，得到所述混凝土减水剂。本发明通过对木质素磺酸盐进行改性，增强了混凝土减水剂的综合性能，使得混凝土的性能得到提升。
Concrete water reducing agent as well as preparation method and application thereof
The invention discloses a concrete water reducing agent as well as a preparation method and application thereof. The preparation method of the concrete water reducing agent comprises the following steps: adding 20-30 parts by weight of lignosulfonate, 10-20 parts by weight of water and 0.8-2 parts by weight of a catalyst into a reaction kettle, heating the reaction kettle to 45-55 DEG C, stirringfor 15-18 minutes; adding 5-10 parts by weight of an acetate solution with a mass concentration of 30-45% into the reaction kettle, stirring for 8-12 minutes at a temperature of 60-70 DEG C; adding 10-15 parts of sodium sulfate, keeping the temperature of the reaction kettle at 80-100 DEG C for 3-4 hours; and reducing the temperature of the reaction kettle to the room temperature to obtain the concrete water reducing agent. The lignosulfonate is modified, so that the comprehensive performance of the concrete water reducing agent is enhanced, and the performance of concrete is improved.
本发明公开了一种混凝土减水剂及其制备方法和应用，混凝土减水剂制备时包括以下步骤：在反应釜中加入木质素磺酸盐、水以及催化剂，以重量份数计，所述木质素磺酸盐为20～30份、水为10～20份以及催化剂为0.8～2份，反应釜升温至45～55℃，并搅拌15～18分钟；向反应釜中加入重量份数为5～10份且质量浓度为30～45％的乙酸盐溶液，反应釜温度为60～70℃，搅拌8～12分钟；加入10～15份硫酸钠，反应釜温度为80～100℃，保持3～4小时；将反应釜温度降低至室温，得到所述混凝土减水剂。本发明通过对木质素磺酸盐进行改性，增强了混凝土减水剂的综合性能，使得混凝土的性能得到提升。
Concrete water reducing agent as well as preparation method and application thereof
一种混凝土减水剂及其制备方法和应用
SHEN WEIFENG (author) / JIA YONGHONG (author) / SHEN BAOLIAN (author)
2020-07-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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