A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Concrete retarder and preparation method thereof
The invention discloses a concrete retarder and a preparation method thereof, relates to the field of concrete retarders, and aims to solve the problems that the existing preparation mode and steps are complicated, the raw materials are numerous, the error-tolerant rate is low, the retarder is not suitable for on-site preparation on site, and the retarder needs proper temperature and avoids illumination during transportation, so that the preparation cost is low. In order to solve the problem that the retarder is often damaged due to transportation, the invention provides the following scheme that the retarder comprises a mixed solution and semi-hydrated gypsum, the mixed solution is prepared from the following raw materials in percentage by weight: 60-70% of water, 20-30% of phosphoric acid and 5-10% of sulfuric acid, the concentration of the phosphoric acid is 25%, the concentration of the sulfuric acid is 8%, and the concentration of the semi-hydrated gypsum is 5-10%. The weighing ratio of the mixed solution to the semi-hydrated gypsum is 1: 1.4. The concrete retarder and the preparation method thereof have the advantages of simple steps, fewer raw materials and low error rate, are suitable for preparation on a construction site, and avoid the phenomenon that the retarder is damaged in the transportation process.
本发明公开了一种混凝土缓凝剂及其制备方法，涉及混凝土缓凝剂领域，针对目前缓凝剂制备时，现有的制备方式，步骤繁杂，且原料众多，容错率低，不适合在场地进行现场制备，同时缓凝剂在运输时需要适宜的温度并且避免光照，因此经常出现由于运输导致缓凝剂损坏的问题，现提出如下方案，其包括混合液与半水石膏，所述混合液由以下重量百分比的原料组成：水60％‑70％、磷酸20％‑30％以及硫酸5％‑10％，且所述磷酸的浓度为25％，所述硫酸的浓度为8％，所述混合液与半水石膏的称重比例为1:1.4。该混凝土缓凝剂及其制备方法步骤简单，原料较少，错误率低，适合在施工现场进行制备，避免了运输过程中导致缓凝剂损坏的现象。
Concrete retarder and preparation method thereof
The invention discloses a concrete retarder and a preparation method thereof, relates to the field of concrete retarders, and aims to solve the problems that the existing preparation mode and steps are complicated, the raw materials are numerous, the error-tolerant rate is low, the retarder is not suitable for on-site preparation on site, and the retarder needs proper temperature and avoids illumination during transportation, so that the preparation cost is low. In order to solve the problem that the retarder is often damaged due to transportation, the invention provides the following scheme that the retarder comprises a mixed solution and semi-hydrated gypsum, the mixed solution is prepared from the following raw materials in percentage by weight: 60-70% of water, 20-30% of phosphoric acid and 5-10% of sulfuric acid, the concentration of the phosphoric acid is 25%, the concentration of the sulfuric acid is 8%, and the concentration of the semi-hydrated gypsum is 5-10%. The weighing ratio of the mixed solution to the semi-hydrated gypsum is 1: 1.4. The concrete retarder and the preparation method thereof have the advantages of simple steps, fewer raw materials and low error rate, are suitable for preparation on a construction site, and avoid the phenomenon that the retarder is damaged in the transportation process.
本发明公开了一种混凝土缓凝剂及其制备方法，涉及混凝土缓凝剂领域，针对目前缓凝剂制备时，现有的制备方式，步骤繁杂，且原料众多，容错率低，不适合在场地进行现场制备，同时缓凝剂在运输时需要适宜的温度并且避免光照，因此经常出现由于运输导致缓凝剂损坏的问题，现提出如下方案，其包括混合液与半水石膏，所述混合液由以下重量百分比的原料组成：水60％‑70％、磷酸20％‑30％以及硫酸5％‑10％，且所述磷酸的浓度为25％，所述硫酸的浓度为8％，所述混合液与半水石膏的称重比例为1:1.4。该混凝土缓凝剂及其制备方法步骤简单，原料较少，错误率低，适合在施工现场进行制备，避免了运输过程中导致缓凝剂损坏的现象。
Concrete retarder and preparation method thereof
一种混凝土缓凝剂及其制备方法
CHEN GUANBIN (author) / FAN LONGFEI (author) / TAN YONG (author) / LIN JINHUI (author) / LIU YANCHUAN (author)
2023-12-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME