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Application of concrete material in pile foundation reinforcement cage

A pile foundation reinforcement cage and concrete technology, which is applied in the direction of sheet pile walls, foundation structure engineering, construction, etc., can solve the problems of long concrete final setting period, affecting the complete solidification of cement, and affecting the construction period, so as to shorten the final setting period, The effect of shortening the final setting time and shortening the construction period

Active Publication Date: 2020-04-14
利川志砼建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems in the prior art that the final setting period of concrete is long, the construction period is affected, and the temperature and dry heat affect the complete solidification of cement, the present invention provides a concrete material that shortens the final setting time and its preparation method and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of concrete material that shortens the final setting time of the present embodiment includes cement, starch and sand, and the parts by weight of the three components are: 90 parts of cement, 5 parts of starch, and 200 parts of sand; the cement is fly ash portland cement ;

[0040] A kind of preparation method of the concrete material that shortens final setting time of the present embodiment, the steps are:

[0041] A. Stir after mixing: After mixing the cement and starch evenly, add water and stir evenly to form an initial solid;

[0042] B. Thinning: quickly thin the initial solid into a mold with a thickness of 2cm;

[0043] C. Quick-freezing: transfer to the quick-freezing store for quick-freezing; the freezing temperature is -18°C, and the quick-freezing time is 40 minutes.

[0044] D. Freeze-drying: After being transferred to the vacuum freeze-drying chamber and freeze-dried, it becomes gray and white honeycomb-shaped thin and crisp pieces. The curve of v...

Embodiment 2

[0058] A concrete material that shortens the final setting time of the present embodiment includes cement, starch and sand. The parts by weight of the three components are: 100 parts of cement, 10 parts of starch, and 250 parts of sand; the cement is 42.5 grade ordinary Portland cement ;

[0059] A kind of preparation method of the concrete material that shortens final setting time of the present embodiment, the steps are:

[0060] A. Stir after mixing: After mixing the cement and starch evenly, add water and stir evenly to form an initial solid;

[0061] B. Thinning: Thin the initial solidification quickly into a mold with a thickness of 5cm;

[0062] C. Quick-freezing: transfer to the quick-freezing store for quick-freezing; the freezing temperature is -22°C, and the quick-freezing time is 120 minutes.

[0063] D. Freeze-drying: After being transferred to the vacuum freeze-drying chamber and freeze-dried, it becomes gray and white honeycomb-shaped thin and crisp pieces. Th...

Embodiment 3

[0077] A concrete material that shortens the final setting time of the present embodiment includes cement, starch and sand, and the parts by weight of the three components are: 100 parts of cement, 8 parts of starch, and 250 parts of sand; the cement is pozzolanic Portland cement;

[0078] A kind of preparation method of the concrete material that shortens final setting time of the present embodiment, the steps are:

[0079] A. Stir after mixing: After mixing the cement and starch evenly, add water and stir evenly to form an initial solid;

[0080] B. Thinning: quickly thin the initial solid into a mold with a thickness of 3cm;

[0081] C. Quick-freezing: transfer to the quick-freezing store for quick-freezing; the freezing temperature is -20°C, and the quick-freezing time is 90 minutes.

[0082] D. Freeze-drying: After being transferred to the vacuum freeze-drying chamber and freeze-dried, it becomes gray and white honeycomb-shaped thin and crisp pieces. The curve of vacuum ...

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Abstract

The invention discloses application of a concrete material in a pile foundation reinforcement cage, and belongs to the technical field of building materials. The concrete material capable of shortening the final setting time comprises the following three components in parts by weight: 90-100 parts of cement, 5-10 parts of starch and 200-250 parts of sand, wherein the cement and the starch are uniformly mixed with water and then dried by a vacuum freeze-drying process for use. The plasticity in the initial setting period is fully utilized; after cemetn is mixed with starch and water and stirred, part of the activity of the cement is excited, then a vacuum freeze-drying process is carried out, the vacuum freeze-drying process is used for maintaining the activity, after ice crystals are sublimated and dried, a large number of fine gaps are generated, a grey white honeycomb-shaped thin and brittle block structure is formed, and the structure lays a good foundation for crushing to the micron fineness due to the fact that the moisture content is small and the structure is bulky.

Description

[0001] The application of the present invention is a divisional application, the application number of the parent application: 2016104719319; the name of the parent application: a concrete material that shortens the final setting time and its preparation method and application; the application date of the parent application: 2016-06-27. technical field [0002] The invention belongs to the technical field of building materials, and in particular relates to a concrete material which shortens the final setting time and its preparation method and application. Background technique [0003] The national standard stipulates: Portland cement, ordinary Portland cement, slag Portland cement, fly ash Portland cement, pozzolanic Portland cement, composite Portland cement and other six types of Portland cement initial setting The final setting time shall not be earlier than 45 minutes, generally 1-3 hours; the final setting time of cement shall not be later than 10 hours except for Portl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E02D27/12E02D5/34E04F13/02E04F15/12
CPCC04B28/04E02D27/12E02D5/34E04F13/02E04F15/12C04B14/06C04B24/38C04B22/002
Inventor 徐曼丽
Owner 利川志砼建材有限公司