Diminishing excitant and preparation method
A technology of activator and amino water reducing agent, applied in the field of water reducing activating agent and preparation, can solve the problem of spending a lot of manpower, etc., and achieve the effects of improving water reduction rate, enhancing applicability, and obvious plastic preservation effect.
Inactive Publication Date: 2009-01-14
重庆达华砼外加剂科技发展有限公司
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Problems solved by technology
The existing naphthalene-based water-reducers, amino-based water-reducers, melamine-based water-reducers, aliphatic water-reducers, and polycarboxylate water-reducers each have their own advantages and disadvantages. Its performance can only be achieved by compounding technology, but to improve the water reducing rate, in addition to modifying itself, it is possible to change its process at the same time, but it will take a lot of manpower, material and financial resources
Method used
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Experimental program
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Embodiment Construction
[0010] Below in conjunction with embodiment further illustrate the present invention.
[0011] The components by weight ratio are: 4 parts of citric acid: 3 parts of sodium gluconate: 6 parts of white sugar: 12 parts of sodium hexametaphosphate: 1 part of brown sugar: 55 parts of water: 7 parts of amino water reducing agent.
[0012] Its preparation method steps:
[0013] a. After 55 parts of water are pumped into the reactor, the temperature of the reactor is raised to 75°C, and then 4 parts of citric acid, 3 parts of sodium gluconate, 6 parts of white sugar, and 12 parts of sodium hexametaphosphate are added into the reactor, and stirred for 35 Minutes, the stirrer rotating speed of reactor is 80 rev / mins;
[0014] b. Open the water inlet valve, let the cooling water enter the jacket of the reaction kettle, cool the materials in the reaction kettle, and the temperature drops to 50°C, close the cooling water inlet valve, put 1 part of brown sugar into the reaction kettle, an...
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Disclosed is a water-reducing activator as well as a preparation method thereof, relating to a water-reducing agent for cement and concrete. The activator has the compositions of, by weight: 3 to 7 parts of citric acid: 2 to 5 parts of sodium gluconate: 5 to 10 parts of white sugar: 11 to 16 parts of sodium hexametaphosphate: 1 to 3 parts of brown sugar: 50 to 60 parts of water: 7 to 10 parts of amido water-reducing agent. The preparation method includes: pumping water into a reaction kettle, rising the temperature to between 75DEG C and 80DEG C, then adding the citric acid, the sodium gluconate, the white sugar and the sodium hexametaphosphate into the kettle for agitation sequentially, opening a water inlet valve to lead the cooling water into an interlayer of the kettle, reducing the temperature of materials in the kettle to 50DEG C, closing the water inlet valve for putting the brown sugar into the kettle for agitation, then opening the water inlet valve to guide the cooling water into a jacket of the kettle, then putting the amido water-reducing agent into the kettle for agitation and then settling the mixture for thirty minutes when the temperature of materials in the kettle is reduced to 25DEG C, and finally acquiring the product. The water-reducing activator and the preparation method have the advantages of simple and easy formula and preparation method, good activation effects, increased water-reducing rate, enhanced applicability to cement by the water-reducing agent, obvious plasticity-maintaining effect and more superior performance-price ratio.
Description
1. Technical field [0001] The invention relates to a water-reducing agent used in cement concrete soil, in particular to a water-reducing activator and a preparation method. 2. Background technology [0002] With the construction of bridges, embankments, and high-rise buildings, people pay more and more attention to the quality and life of buildings, and propose high-quality concrete with less water, high strength, and good fluidity. Generally, water-reducing agents are added to the concrete . At present, the scale of construction is getting bigger and bigger, the requirements for building quality are getting higher and higher, and the requirements for concrete admixtures, especially water reducing agents, are higher. The loss of sag over time is small. The existing naphthalene-based water-reducers, amino-based water-reducers, melamine-based water-reducers, aliphatic water-reducers, and polycarboxylate water-reducers each have their own advantages and disadvantages. Its p...
Claims
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IPC IPC(8): C04B24/10C04B22/16
CPCC04B2103/302C04B40/0046
Inventor 蒋德双
Owner 重庆达华砼外加剂科技发展有限公司