A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Enhanced magnesium oxysulfate cement retarder
The invention discloses an enhanced magnesium oxysulfate cement retarder. The magnesium oxysulfate cement retarder is prepared from the following components in parts by weight: 0.1 to 3 parts of gluconic acid, 0.1 to 0.5 part of sodium gluconate, 0.1 to 0.5 part of malonic acid and 0.1 to 0.5 part of succinic acid. The retarder can be used for improving the performance of the magnesium oxysulfatecement, improving the strength of the magnesium oxysulfate cement and prolonging the setting time of the magnesium oxysulfate cement. Through measurement, under the condition of 25-40 DEG C, the initial setting time of the magnesium oxysulfate cement added with the enhanced retarder is prolonged by 296% or above, the final setting time is prolonged by 256% or above, the 28 breaking strength can reach 30.5 MPa or above, the softening coefficient is increased to 0.9, and the early strength is remarkably improved. The enhanced retarder is cheap, easy to obtain, weak in acidity and convenient to store, and meets the requirements of retarders for magnesium oxysulfate products in summer.
本发明公开了一种增强型硫氧镁水泥缓凝剂，所述硫氧镁水泥缓凝剂包括以下组分及其重量份：葡萄糖酸0.1～3份，葡萄糖酸钠0.1～0.5份，丙二酸类0.1～0.5份，丁二酸0.1～0.5份。其能用于改善硫氧镁水泥性能，提高硫氧镁水泥强度并延长硫氧镁水泥的凝结时间。经测定，在25～40℃的条件下，添加增强型缓凝剂后硫氧镁水泥的初凝时间延长了296％以上，终凝时间延长了256％以上，28抗折强度可达30.5MPa以上，增加了软化系数高至0.9，早期强度均得到显著提高。且本发明的增强型缓凝剂廉价易得，酸性较弱，便于储存，满足夏季硫氧镁制品所用缓凝剂要求。
Enhanced magnesium oxysulfate cement retarder
The invention discloses an enhanced magnesium oxysulfate cement retarder. The magnesium oxysulfate cement retarder is prepared from the following components in parts by weight: 0.1 to 3 parts of gluconic acid, 0.1 to 0.5 part of sodium gluconate, 0.1 to 0.5 part of malonic acid and 0.1 to 0.5 part of succinic acid. The retarder can be used for improving the performance of the magnesium oxysulfatecement, improving the strength of the magnesium oxysulfate cement and prolonging the setting time of the magnesium oxysulfate cement. Through measurement, under the condition of 25-40 DEG C, the initial setting time of the magnesium oxysulfate cement added with the enhanced retarder is prolonged by 296% or above, the final setting time is prolonged by 256% or above, the 28 breaking strength can reach 30.5 MPa or above, the softening coefficient is increased to 0.9, and the early strength is remarkably improved. The enhanced retarder is cheap, easy to obtain, weak in acidity and convenient to store, and meets the requirements of retarders for magnesium oxysulfate products in summer.
本发明公开了一种增强型硫氧镁水泥缓凝剂，所述硫氧镁水泥缓凝剂包括以下组分及其重量份：葡萄糖酸0.1～3份，葡萄糖酸钠0.1～0.5份，丙二酸类0.1～0.5份，丁二酸0.1～0.5份。其能用于改善硫氧镁水泥性能，提高硫氧镁水泥强度并延长硫氧镁水泥的凝结时间。经测定，在25～40℃的条件下，添加增强型缓凝剂后硫氧镁水泥的初凝时间延长了296％以上，终凝时间延长了256％以上，28抗折强度可达30.5MPa以上，增加了软化系数高至0.9，早期强度均得到显著提高。且本发明的增强型缓凝剂廉价易得，酸性较弱，便于储存，满足夏季硫氧镁制品所用缓凝剂要求。
Enhanced magnesium oxysulfate cement retarder
一种增强型硫氧镁水泥缓凝剂
LIU XIAOLI (author) / WU XIAOXIAO (author) / QI SHANSHAN (author) / YANG YUFEI (author) / YANG HONGJIAN (author)
2020-10-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| British Library Online Contents | 2017
| British Library Online Contents | 2017
| British Library Online Contents | 2017