Concrete synergist and preparation method thereof

A technology of concrete synergist and sodium hyposulfite, which is applied in the field of concrete synergist and its preparation, can solve the problems that cement cannot give full play to its strength effect and waste of cementitious materials, so as to improve homogeneity and workability, improve The degree of hydration and the effect of reducing slump

Inactive Publication Date: 2018-04-20
GUYAN TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have found that nearly 20% of the cement in concrete has not been hydrated and is only used as a filling material, which not only causes waste of cementitious materials, but also causes the cement to fail to fully exert its strength

Method used

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  • Concrete synergist and preparation method thereof
  • Concrete synergist and preparation method thereof
  • Concrete synergist and preparation method thereof

Examples

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preparation example Construction

[0021] A preparation method for concrete synergist, comprising the following steps:

[0022] 1) After mixing sodium hyposulfite and water in the reactor, heat and stir;

[0023] 2) adding sodium hexametaphosphate, maintaining the temperature of step 1) and continuing to stir;

[0024] 3) Stop stirring and heating, add triethanolamine, sodium diethylenetriaminepentacarboxylate and acrylamide, mix and stir at room temperature;

[0025] 4) Airtight reactor heating reaction, discharge after cooling, obtain concrete synergist, the composition of concrete synergist is as described above.

[0026] Preferably, in step 1), the heating temperature is 35-45°C, and the stirring time is 25-35 minutes; more preferably, in step 1), the stirring time is 30 minutes.

[0027] Preferably, in step 2), the stirring time is 8-15 min; further preferably, in step 2), the stirring time is 10 min.

[0028] Preferably, in step 3), the time for mixing and stirring is 25-35 minutes; more preferably, in...

Embodiment 1

[0033] The composition of the concrete synergist of Example 1 is shown in Table 1.

[0034] The concrete synergist of table 1 embodiment 1

[0035] raw material

parts by mass

Sodium hyposulfite

10

Triethanolamine

15

Hexametaphosphate

15

Sodium diethylenetriaminepentacarboxylate

12

Acrylamide

8

water

40

[0036] The concrete synergist preparation method of embodiment 1 is as follows:

[0037] 1) Add water and sodium hyposulfite in sequence according to the proportion of the formula in the cleaned reactor, start stirring and gradually start heating until the temperature reaches 35°C, stir and heat for 30 minutes;

[0038] 2) Stop stirring, add sodium hexametaphosphate in the reactor, keep the temperature, and continue stirring for 10 minutes;

[0039] 3) Stop stirring and heating, add triethanolamine, sodium diethylenetriamine pentacarboxylate and acrylamide in the reactor, stir at room temp...

Embodiment 2

[0042] The composition of the concrete synergist of Example 2 is shown in Table 2.

[0043] The concrete synergist of table 2 embodiment 2

[0044] raw material

parts by mass

Sodium hyposulfite

13

Triethanolamine

16

Hexametaphosphate

17

Sodium diethylenetriaminepentacarboxylate

12

Acrylamide

8

water

34

[0045] The concrete synergist preparation method of embodiment 2 is as follows:

[0046] 1) Add water and sodium hyposulfite in sequence according to the proportion of the formula in the cleaned reactor, start stirring and gradually start heating until the temperature reaches 35°C, stir and heat for 30 minutes;

[0047] 2) Stop stirring, add sodium hexametaphosphate in the reactor, keep the temperature, and continue stirring for 10 minutes;

[0048] 3) Stop stirring and heating, add triethanolamine, sodium diethylenetriamine pentacarboxylate and acrylamide in the reactor, stir at room temp...

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Abstract

The invention discloses a concrete synergist and a preparation method thereof. The concrete synergist consists of the following raw materials in percentage by weight: 8-22 percent of sodium thiosulfate, 12-20 percent of triethanolamine, 12-20 percent of sodium hexametaphosphate, 8-15 percent of diethylenetriamine pentarboxylic acid sodium, 4-11 percent of acrylamide and the balance of water. Moreover, the invention also discloses the preparation method of the concrete synergist. The invention discloses the high-performance concrete synergist which has the benefits that through improving the dispersing property of cement, the effect of the cement is furthest stimulated, and the hydration degrees of cement minerals are improved, so that the strength of concrete at each age is improved; through promoting the hydration of minerals more difficult to hydrate, the amount of gel is increased, the compaction degree of the concrete is improved, and the slump of the concrete is reduced. Meanwhile, the synergist disclosed by the invention has a certain dispersing property and can improve the dispersing properties of cement particles and mineral admixtures, thereby improving the homogeneity andthe peaceability of a concrete mixture.

Description

technical field [0001] The invention relates to a concrete synergist and a preparation method thereof. Background technique [0002] Since Portland cement was invented by the Englishman J. Asputin in the 1920s, cement was used as the cementitious material, sand and stone were used as aggregates, mixed with water in a certain proportion, and the cement concrete was made by stirring. Due to its good strength and durability, it has become the largest building material in civil engineering. It is not only widely used in building construction, roads, bridges, water conservancy facilities, tunnels and other infrastructure, but also widely used in marine development and geothermal engineering. , atomic energy engineering and space development and other special projects. The production of concrete requires the use of a large amount of cement, and in the cement preparation process, limestone must first be calcined to prepare clinker. During the clinker preparation process, a large a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12
CPCC04B40/0039C04B22/14C04B24/122C04B22/16C04B24/121C04B24/124
Inventor 李鹏陈锡麟潘敏尧陈忠平何威冯波宇伍航宇黄小波黄威龙张善硕赵泽民
Owner GUYAN TECH DEV CO LTD
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