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Method for producing early-strength concrete water reducer from arbutin preparation waste liquid

A technology of concrete water reducer and arbutin, which is applied in the field of production of early strength concrete water reducer, can solve the problems of chloride ion corrosion of steel bars, poor effect, erosion damage, etc., and achieve green environmental stability and low cost Effect

Active Publication Date: 2016-08-17
广东乐尔康生物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chloride-type products have good early strength effect, but chloride ions have a corrosive effect on steel bars, and are currently banned for reinforced concrete and metal embedded concrete; sulfate-type products should pay attention to efflorescence and white blooms during use, and sulfate cannot Over-mixing to avoid alkali-aggregate reaction damage or erosion damage; organic types such as triethanolamine are not effective when used alone (CN103755202A)
In short, the polycarboxylate superplasticizers currently used to produce early-strength concrete still have problems such as environmental protection and long-term stability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A method for producing early-strength concrete water reducer by using arbutin to prepare waste liquid, the arbutin waste liquid includes 10-20% arbutin, 40-60% sucrose, 0.1-0.5 p-benzoquinone %, surplus is water, it is characterized in that:

[0013] First, carry out oxidation pretreatment to arbutin waste liquid with the hydrogen peroxide that accounts for 10% of arbutin waste liquid by weight;

[0014] Then, 2 parts by weight of the oxidized pretreated arbutin waste liquid was added to 100 parts by weight of the polycarboxylate water reducer and mixed evenly, and after standing for 2 days, an early-strength polycarboxylate water reducer was obtained;

[0015] Finally, after mixing 280g of cement, 90g of fly ash, 90g of mineral powder, 800g of sand, 1008g of stone and 220g of water, and then mixed with 10g of the above-mentioned early-strength polycarboxylate superplasticizer to make 1 liter of early-strength concrete, its The initial setting time is 45 minutes, the s...

Embodiment 2

[0017] A method for producing early-strength concrete water reducer by using arbutin to prepare waste liquid, the arbutin waste liquid includes 10-20% arbutin, 40-60% sucrose, 0.1-0.5 p-benzoquinone %, surplus is water, it is characterized in that:

[0018] First, the arbutin waste liquid is oxidized and pretreated with hydrogen peroxide that accounts for 25% of the arbutin waste liquid by weight;

[0019] Then, 2 parts by weight of the oxidized pretreated arbutin waste liquid was added to 100 parts by weight of the polycarboxylate water reducer and mixed evenly, and after standing for 2 days, an early-strength polycarboxylate water reducer was obtained;

[0020] Finally, mix 300g of cement, 80g of fly ash, 90g of mineral powder, 780g of sand, 1100g of stones and 230g of water, and then add 11g of the above-mentioned early-strength polycarboxylate superplasticizer to make 1 liter of early-strength concrete. The initial setting time is 40 minutes, the strength is greater than ...

Embodiment 3

[0022] A method for producing early-strength concrete water reducer by using arbutin to prepare waste liquid, the arbutin waste liquid includes 10-20% arbutin, 40-60% sucrose, 0.1-0.5 p-benzoquinone %, surplus is water, it is characterized in that:

[0023] First, the arbutin waste liquid is oxidized and pretreated with hydrogen peroxide that accounts for 28% of the arbutin waste liquid by weight;

[0024] Then, 2.5 parts by weight of the oxidized pretreated arbutin waste liquid was added to 100 parts by weight of the polycarboxylate water reducer and mixed evenly, and after standing for 3 days, an early-strength polycarboxylate water reducer was obtained;

[0025] Finally, mix 260g of cement, 80g of fly ash, 80g of mineral powder, 900g of sand, 1200g of gravel and 210g of water, and then add 10g of the above-mentioned early-strength polycarboxylate superplasticizer to make 1 liter of early-strength concrete. The initial setting time is 48 minutes, the strength is greater tha...

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Abstract

The invention relates to a method for producing an early-strength concrete water reducer from arbutin preparation waste liquid. The method comprises the following steps: firstly, carrying out oxidization pretreatment on arbutin waste liquid by virtue of hydrogen peroxide of which the weight is equal to 10%-50% of the arbutin waste liquid; and then, adding 1-5 parts of the arbutin waste liquid subjected to oxidization pretreatment into 100-200 parts of a polycarboxylate water reducer, uniformly mixing, and standing for 2-5 days, so as to obtain the early-strength concrete water reduce product. The method has the advantages that the reutilization of the arbutin waste liquid is realized, the process is simple, and the product is environmentally friendly and high in stability.

Description

technical field [0001] The invention relates to a compound containing a hydrocarbon group or a substituted hydrocarbon group directly connected to a heteroatom of a saccharide group, relates to a construction engineering material, especially a method for producing an early-strength concrete water reducer by using arbutin to prepare waste liquid. Background technique [0002] The waste liquid after industrially preparing arbutin contains 10-20% arbutin, 40-60% sucrose, 0.1-0.5% p-benzoquinone, and the balance is water. If it is sent to the sewage plant as waste liquid, it will not only waste the precious arbutin resource, but also need shipping and treatment fees. [0003] On the other hand, with the rapid development of my country's economy and the improvement of people's quality of life, infrastructure such as intercity high-speed rail, cross-sea bridges, drainage projects, subsea tunnels and commercial housing has been continuously increased. In order to speed up project c...

Claims

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Application Information

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IPC IPC(8): C04B24/24C04B103/30
CPCC04B40/0039C04B2103/302C04B24/24C04B24/001
Inventor 周银泉
Owner 广东乐尔康生物科技股份有限公司
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