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Starch syrup specially used for concrete, and preparation method of starch syrup

A technology of starch syrup and concrete, which is applied in fermentation and other directions to achieve moderate viscosity, which is conducive to large-scale production, and has a significant effect of water reduction and retardation

Active Publication Date: 2018-01-19
SHANDONG LUZHOU FOOD GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, sometimes there is an incompatibility between the admixture and the cement and between the composite admixture and the cement, and this incompatibility sometimes leads to serious engineering accidents and immeasurable economic losses

Method used

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  • Starch syrup specially used for concrete, and preparation method of starch syrup

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Effect test

Embodiment 1

[0045] A special starch syrup for concrete, the preparation method comprising the steps of:

[0046] (1) Slurry: adjust the starch into starch milk with a concentration of 20%, stir well, and after mixing thoroughly, add soda ash (sodium carbonate) to adjust pH=5.4, take 8U / g·Ds (U / g·Ds as each g The amount of α-amylase added to the dry material starch is added to the high-temperature-resistant α-amylase, and stirred evenly to obtain a starch slurry;

[0047] (2) Liquefaction: Spray and liquefy the starch slurry prepared in step (1), control the temperature at 105°C for 6 minutes, cool in vacuum, cool down to 90°C, maintain for 30 minutes, control the DE value to 12%, and inactivate the enzyme to obtain powder serous liquid;

[0048] (3) Saccharification: Cool down the liquefied slurry prepared in step (2) to 58°C, add β-amylase 100ml / ton dry base starch, pullulanase 50ml / ton dry base starch, and keep warm for saccharification after 24 hours Inactivate the enzyme to obtain the...

Embodiment 2

[0053] A special starch syrup for concrete, the preparation method comprises the following steps:

[0054] (1) Slurry adjustment: adjust the starch into starch milk with a concentration of 28%, fully stir, and after mixing thoroughly, add soda ash (sodium carbonate) to adjust the pH=5.8, and use 11U / g·Ds (U / g·Ds as each g The amount of α-amylase added to the dry material starch is added to the high-temperature-resistant α-amylase, and stirred evenly to obtain a starch slurry;

[0055] (2) Liquefaction: Spray and liquefy the starch slurry prepared in step (1), control the temperature at 108°C for 7 minutes, cool in vacuum, lower the temperature to 95°C, maintain it for 60 minutes, control the DE value to 15%, and inactivate the enzyme to obtain powder serous liquid;

[0056] (3) Saccharification: Cool down the slurry liquefaction solution prepared in step (2) to 60°C, add 200ml / ton dry-based starch of β-amylase and 150ml / ton dry-based starch of pullulanase, and keep saccharifi...

Embodiment 3

[0061] A special starch syrup for concrete, the preparation method comprises the following steps:

[0062] (1) Slurry: adjust the starch into starch milk with a concentration of 35%, stir well, and after mixing thoroughly, add soda ash (sodium carbonate) to adjust pH=6.2, with 14U / g·Ds (U / g·Ds as each g The amount of α-amylase added to the dry material starch is added to the high-temperature-resistant α-amylase, and stirred evenly to obtain a starch slurry;

[0063] (2) Liquefaction: Spray and liquefy the starch slurry prepared in step (1), control the temperature at 110°C for 9 minutes, cool in a vacuum, lower the temperature to 97°C, maintain for 90 minutes, control the DE value to 17%, and inactivate the enzyme to obtain powder serous liquid;

[0064] (3) Saccharification: Cool down the slurry liquefaction solution prepared in step (2) to 62°C, add β-amylase 300ml / ton dry base starch, pullulanase 200ml / ton dry base starch, keep warm and saccharify for 48 hours Inactivate ...

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Abstract

The invention relates to starch syrup specially used for concrete, and a preparation method of the starch syrup. Taking syrup as dry basis, the starch syrup is prepared from the following components by mass percent: 40-55% of maltose, 10-18% of maltotriose, 22-28% of polysaccharide of maltotetraose or higher, 4-8% of sodium gluconate and 0-9.5% of glucose. The starch syrup specially used for the concrete is prepared by innovatively taking the maltose as a main body, taking macromolecular malt polysaccharides of the maltotriose or higer as support and adding a right amount of the sodium gluconate; a syrup product which is moderate in viscosity and remarkable in water reducing and retarding effect is developed; a new way is developed for the production of the starch syrup specially used forthe concrete.

Description

technical field [0001] The invention relates to a special starch syrup for concrete and a preparation method thereof, belonging to the technical field of intensive processing of agricultural products. Background technique [0002] Concrete is the building material with the largest consumption, the widest application range and the best durability, and its status is hard to be replaced by any other material. With the increasing number of concrete products, the increasingly complex concrete structure, and the high-rise and large-scale buildings, many new requirements have been put forward for concrete materials. For example, technical requirements such as condensate adjustment, delay or reduction of heat of hydration, high fluidity, high strength and durability, as well as economic requirements such as saving energy consumption as much as possible, reducing costs and rapid construction. [0003] In the past, cement with different mineral composition was usually used to make co...

Claims

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Application Information

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IPC IPC(8): C04B24/38C12P19/12C12P19/14C12P19/22
Inventor 刘玉春赵玉斌王德友
Owner SHANDONG LUZHOU FOOD GROUP
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