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Additive for improving early strength of white cement and preparation method and application of additive
The invention discloses an additive for improving early strength of white cement, a preparation method and application thereof, and belongs to the technical field of additives. The additive is mainlycomposed of phosphonoglycolic acid, Hydroxyethylidene-1,1-diphosphonic acid, ethylenediamine tetramethylene phosphonic acid, disodium hydroxyethylidene diphosphonate, tetrasodium aminotrimethylene phosphonate, sodium thiocyanate and water; through the chelating effect of organic phosphonate ions with an extremely strong chelating effect in the additive and calcium ions, the concentration of soluble calcium ions of white cement in hydrated slurry is increased, and then the dissolution and hydration rates of mineral components of the white cement are promoted, and the effect of improving the early strength of the white cement is achieved; the addition amount of the additive is 0.03%-0.2% of the weight of the white cement, and the 1-day strength and the 3-day strength can be improved by 5-15%.
本发明公开了一种提高白水泥早期强度的外加剂、制备方法及其应用，属于外加剂技术领域，所述外加剂主要是由膦酰基羟基乙酸、羟基亚乙基二膦酸、乙二胺四甲叉膦酸、羟基乙叉二膦酸二钠、氨基三甲叉膦酸四钠、硫氰酸钠和水组成；所述外加剂中具有极强螯合作用的有机膦酸根离子通过与钙离子的鳌合作用，提高白水泥在水化浆体中的可溶性钙离子浓度，从而促进白水泥矿物组分的溶解和水化速率，达到提高白水泥早期强度的作用；所述外加剂在掺加量为白水泥重量的0.03％‑0.2％，1天强度与3天强度能提高5％‑15％。
Additive for improving early strength of white cement and preparation method and application of additive
The invention discloses an additive for improving early strength of white cement, a preparation method and application thereof, and belongs to the technical field of additives. The additive is mainlycomposed of phosphonoglycolic acid, Hydroxyethylidene-1,1-diphosphonic acid, ethylenediamine tetramethylene phosphonic acid, disodium hydroxyethylidene diphosphonate, tetrasodium aminotrimethylene phosphonate, sodium thiocyanate and water; through the chelating effect of organic phosphonate ions with an extremely strong chelating effect in the additive and calcium ions, the concentration of soluble calcium ions of white cement in hydrated slurry is increased, and then the dissolution and hydration rates of mineral components of the white cement are promoted, and the effect of improving the early strength of the white cement is achieved; the addition amount of the additive is 0.03%-0.2% of the weight of the white cement, and the 1-day strength and the 3-day strength can be improved by 5-15%.
本发明公开了一种提高白水泥早期强度的外加剂、制备方法及其应用，属于外加剂技术领域，所述外加剂主要是由膦酰基羟基乙酸、羟基亚乙基二膦酸、乙二胺四甲叉膦酸、羟基乙叉二膦酸二钠、氨基三甲叉膦酸四钠、硫氰酸钠和水组成；所述外加剂中具有极强螯合作用的有机膦酸根离子通过与钙离子的鳌合作用，提高白水泥在水化浆体中的可溶性钙离子浓度，从而促进白水泥矿物组分的溶解和水化速率，达到提高白水泥早期强度的作用；所述外加剂在掺加量为白水泥重量的0.03％‑0.2％，1天强度与3天强度能提高5％‑15％。
Additive for improving early strength of white cement and preparation method and application of additive
一种提高白水泥早期强度的外加剂、制备方法及其应用
XIAO XUEDANG (author) / MENG XUYAN (author) / TANG GUANBAO (author) / XIAO MENGCHEN (author) / ZHU JUNTUAN (author) / WU TONGYAO (author) / YE CHAO (author)
2020-10-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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