Green and environment-friendly liquid accelerator and preparation method thereof
A green and environmental-friendly quick-setting agent technology, applied in the field of concrete admixture, can solve the problems of large loss of concrete strength, excessive construction dust, and easy generation of irritating gas, so as to achieve no loss of strength in the later stage, improve construction efficiency, and is not easy to delaminate Precipitation effect
Inactive Publication Date: 2021-09-07
河南砼道中人新材料技术有限公司
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[0003] Accelerators in my country can be divided into powder and liquid accelerators in terms of properties. Powder accelerators are mainly used for dry spraying. During the construction process, there are disadvantages such as large dust, uneven mixing, and large rebound.
At present, the largest amount is mainly liquid alkali accelerator, and its main disadvantages are: (1) The production process consumes a lot of energy and causes serious environmental pollution; (2) The construction has a lot of dust, high alkalinity, and strong corrosion; (3) Rebound Large amount, thin spray layer at one time; (4) The strength loss of concrete is relatively large in the later stage; (5) The durability of concrete is poor, etc.
However, the liquid alkali-free accelerators currently developed still have problems such as high dosage, easy layering and precipitation, poor adaptability and high cost.
In addition, most of the current liquid alkali-free accelerators need to be heated at a temperature of 60°C to 80°C to promote the dissolution of flaky aluminum sulfate during the preparation process, and irritating gases are likely to be generated during the production process, which cannot meet the requirements of green environmental protection
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[0018] The technical solution of the present invention is described clearly and completely below, obviously, the described embodiments are only some embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0019] A green and environment-friendly liquid quick-setting agent, which includes the following components in mass percentage: aluminum sulfate: 42%-46%, nano-silica sol: 2.5%-3.5%, organic acid: 0.5%-0.75%, inorganic Acid: 0.1%~0.3%, composite silicate: 1.0%~1.5%, ferrous sulfate: 3.0%~3.2%, pH regulator: 0.2%~0.5%, alcohol amine: 2.0%~2.5%, balance For bottom water. Wherein, the aluminum sulfate is 18-hydrate sheet-shaped aluminum sulfate; the nano-silica sol is a nano-silica sol with a concentration of 50%; the organic acid is formic acid with a concentration of 85%; ...
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The invention discloses a green and environment-friendly liquid alkali-free accelerator and a preparation method thereof. The liquid accelerator is prepared by adopting a normal-temperature preparation method, and is simple in production process, short in production period, low in energy consumption and green and environment-friendly; by doping the liquid accelerator, the initial setting time and the final setting time of cement can be greatly shortened, the construction efficiency is improved, and sprayed concrete is high in early strength and free of loss of later strength. Meanwhile, the accelerator is good in homogeneity, capable of being stored for a long time, free of pungent smell and free of pollution to the environment, and is a green and environment-friendly liquid accelerator which is high in cost performance and wide in application range.
Description
technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a green and environment-friendly liquid quick-setting agent and a preparation method thereof. Background technique [0002] Accelerator is an admixture that can make concrete set quickly, harden and obtain early strength. It is mainly used in shotcrete and mortar projects, providing a guarantee for the safe and efficient implementation of tunnel engineering, slope reinforcement, shotcrete anchor support, leak plugging and emergency repairs. [0003] Accelerators in my country can be divided into powder and liquid accelerators according to their properties. Powder accelerators are mainly used for dry spraying. During the construction process, there are disadvantages such as large dust, uneven mixing, and large rebound. At present, the largest amount is mainly liquid alkali accelerator, and its main disadvantages are: (1) The production process consumes a lot of energy...
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IPC IPC(8): C04B24/12C04B103/12
CPCC04B40/0039C04B2103/12C04B22/148C04B14/062C04B22/165C04B24/04C04B24/122C04B22/00C04B22/149C04B24/12
Inventor 陈源
Owner 河南砼道中人新材料技术有限公司