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High-early-strength alkali-free liquid accelerator and preparation method thereof
The invention discloses a high-early-strength alkali-free liquid accelerator and a preparation method thereof, belongs to the technical field of building materials, and solves the problem that sprayed concrete using a liquid accelerator in the prior art is generally low in early strength. The high-early-strength alkali-free liquid accelerator provided by the invention comprises the following raw materials in percentage by mass: 50-70% of aluminum sulfate; 3-7% of a stabilizer; 0.5-3% of an early strength component; 0-6% of inorganic acid; and the balance of water. After 6-9% of the prepared early-strength alkali-free liquid accelerator is added into sprayed concrete, the initial setting time of the sprayed concrete is less than 5 minutes, the final setting time of the sprayed concrete is less than 10 minutes, the compressive strength of the sprayed concrete in one day is greater than 9 MPa, and the compressive strength of the sprayed concrete in 28 days is not lost. Compared with other accelerators, the product has the advantage that the early strength is greatly improved on the premise of meeting other indexes of the GB35159 standard. The liquid accelerator is suitable for improving the early strength of the sprayed concrete.
本发明公开了一种高早强无碱液体速凝剂及其制备方法，属于建筑材料技术领域，解决了现有技术中使用液体速凝剂的喷射混凝土普遍存在早期强度偏低的问题。本发明提供的高早强无碱液体速凝剂原料组成及其质量百分数如下：硫酸铝：50‑70％；稳定剂：3‑7％；早强组分：0.5‑3％；无机酸：0‑6％；余量为水。向喷射混凝土中添加6‑9％本发明制备的早强无碱液体速凝剂后，喷射混凝土的初凝时间小于5分钟，终凝时间小于10分钟，1天抗压强度大于9MPa，28天抗压强度不损失，相较于其他速凝剂，在满足GB35159标准的其他指标前提下，早期强度有大幅度的增加。本发明适用于提高喷射混凝土的早期强度。
High-early-strength alkali-free liquid accelerator and preparation method thereof
The invention discloses a high-early-strength alkali-free liquid accelerator and a preparation method thereof, belongs to the technical field of building materials, and solves the problem that sprayed concrete using a liquid accelerator in the prior art is generally low in early strength. The high-early-strength alkali-free liquid accelerator provided by the invention comprises the following raw materials in percentage by mass: 50-70% of aluminum sulfate; 3-7% of a stabilizer; 0.5-3% of an early strength component; 0-6% of inorganic acid; and the balance of water. After 6-9% of the prepared early-strength alkali-free liquid accelerator is added into sprayed concrete, the initial setting time of the sprayed concrete is less than 5 minutes, the final setting time of the sprayed concrete is less than 10 minutes, the compressive strength of the sprayed concrete in one day is greater than 9 MPa, and the compressive strength of the sprayed concrete in 28 days is not lost. Compared with other accelerators, the product has the advantage that the early strength is greatly improved on the premise of meeting other indexes of the GB35159 standard. The liquid accelerator is suitable for improving the early strength of the sprayed concrete.
本发明公开了一种高早强无碱液体速凝剂及其制备方法，属于建筑材料技术领域，解决了现有技术中使用液体速凝剂的喷射混凝土普遍存在早期强度偏低的问题。本发明提供的高早强无碱液体速凝剂原料组成及其质量百分数如下：硫酸铝：50‑70％；稳定剂：3‑7％；早强组分：0.5‑3％；无机酸：0‑6％；余量为水。向喷射混凝土中添加6‑9％本发明制备的早强无碱液体速凝剂后，喷射混凝土的初凝时间小于5分钟，终凝时间小于10分钟，1天抗压强度大于9MPa，28天抗压强度不损失，相较于其他速凝剂，在满足GB35159标准的其他指标前提下，早期强度有大幅度的增加。本发明适用于提高喷射混凝土的早期强度。
High-early-strength alkali-free liquid accelerator and preparation method thereof
一种高早强无碱液体速凝剂及其制备方法
LIU JIANJUN (author) / YANG YANG (author)
2021-09-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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