Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Special polycarboxylate superplasticizer for annular concrete pole and preparation method of special polycarboxylate superplasticizer
The invention provides a polycarboxylate superplasticizer for an annular concrete pole and a preparation method of the polycarboxylate superplasticizer, and belongs to the field of concrete admixtures. The water reducing agent is prepared from a polycarboxylic acid water reducing agent mother solution and a compound auxiliary agent through two processes of mother solution polymerization and auxiliary agent compounding, the polycarboxylic acid water reducer mother liquor is a polycarboxylic acid copolymer formed by copolymerizing an unsaturated alcohol-based polyethylene glycol ether macromonomer and beta-(acryloyloxy) propionic acid, the molecular weight distribution index Mw/Mn of the polycarboxylic acid water reducer mother liquor is less than 1.7, and the average molecular weight is 20000-80000; the molar ratio of the unsaturated alcohol-based polyethylene glycol ether macromonomer to the beta-(acryloyloxy) propionic acid is 1: (1-6). The compound auxiliary agent contains iron element sulfate, carbonate or bicarbonate and a compound air entraining agent. The water reducer is used for preparing the concrete for the dry and hard annular electric pole, the effect is better, construction and material distribution are easy, the hardening strength is high, the demolding time is short, the prepared dry and hard concrete hardly generates residual concrete slurry in the centrifugal technological process, and the water reducer is economical and environmentally friendly.
本发明提供一种环形混凝土电杆用聚羧酸减水剂及其制备方法，属于混凝土外加剂领域。所述减水剂由聚羧酸减水剂母液和复配助剂经过母液聚合和助剂复配两个过程制备得到；聚羧酸减水剂母液是由不饱和醇基聚乙二醇醚大单体和β‑(丙烯酰氧)丙酸共聚的聚羧酸共聚物，其分子量分布指数Mw/Mn＜1.7，平均分子量在20000～80000；不饱和醇基聚乙二醇醚大单体和β‑(丙烯酰氧)丙酸的摩尔比为1:1～6。所述的复配助剂含有铁系元素硫酸盐、碳酸盐或碳酸氢盐、复合引气剂。该减水剂用于配制干硬性环形电杆用混凝土效果更好，易于施工布料，硬化强度高，脱模时间短，配制的干硬性混凝土在离心工艺过程中几乎不产生混凝土余浆，经济环保。
Special polycarboxylate superplasticizer for annular concrete pole and preparation method of special polycarboxylate superplasticizer
The invention provides a polycarboxylate superplasticizer for an annular concrete pole and a preparation method of the polycarboxylate superplasticizer, and belongs to the field of concrete admixtures. The water reducing agent is prepared from a polycarboxylic acid water reducing agent mother solution and a compound auxiliary agent through two processes of mother solution polymerization and auxiliary agent compounding, the polycarboxylic acid water reducer mother liquor is a polycarboxylic acid copolymer formed by copolymerizing an unsaturated alcohol-based polyethylene glycol ether macromonomer and beta-(acryloyloxy) propionic acid, the molecular weight distribution index Mw/Mn of the polycarboxylic acid water reducer mother liquor is less than 1.7, and the average molecular weight is 20000-80000; the molar ratio of the unsaturated alcohol-based polyethylene glycol ether macromonomer to the beta-(acryloyloxy) propionic acid is 1: (1-6). The compound auxiliary agent contains iron element sulfate, carbonate or bicarbonate and a compound air entraining agent. The water reducer is used for preparing the concrete for the dry and hard annular electric pole, the effect is better, construction and material distribution are easy, the hardening strength is high, the demolding time is short, the prepared dry and hard concrete hardly generates residual concrete slurry in the centrifugal technological process, and the water reducer is economical and environmentally friendly.
本发明提供一种环形混凝土电杆用聚羧酸减水剂及其制备方法，属于混凝土外加剂领域。所述减水剂由聚羧酸减水剂母液和复配助剂经过母液聚合和助剂复配两个过程制备得到；聚羧酸减水剂母液是由不饱和醇基聚乙二醇醚大单体和β‑(丙烯酰氧)丙酸共聚的聚羧酸共聚物，其分子量分布指数Mw/Mn＜1.7，平均分子量在20000～80000；不饱和醇基聚乙二醇醚大单体和β‑(丙烯酰氧)丙酸的摩尔比为1:1～6。所述的复配助剂含有铁系元素硫酸盐、碳酸盐或碳酸氢盐、复合引气剂。该减水剂用于配制干硬性环形电杆用混凝土效果更好，易于施工布料，硬化强度高，脱模时间短，配制的干硬性混凝土在离心工艺过程中几乎不产生混凝土余浆，经济环保。
Special polycarboxylate superplasticizer for annular concrete pole and preparation method of special polycarboxylate superplasticizer
一种环形混凝土电杆专用的聚羧酸减水剂及其制备方法
PEI JIKAI (Autor:in) / WANG XIANFENG (Autor:in) / CHEN GUANGMING (Autor:in) / WANG YUE (Autor:in) / LIU XUEMING (Autor:in) / LI XIANJUN (Autor:in)
07.07.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2023