No-residual slurry forming technology of centrifugal tubular pile

A technology of centrifugal forming and slurry forming, which is applied in the direction of ceramic forming machines and manufacturing tools, etc., can solve the problems of residual slurry produced by pipe piles, achieve the effects of reducing consumption, improving cohesiveness, and realizing clean production

Active Publication Date: 2013-01-02
FUJIAN DADI CONCRETE PILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a centrifugal pipe pile without residual slurry forming process, so as to

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] In this embodiment, in the preparation step of the aggregate production, the coarse aggregate is made of 5-20mm continuous graded gravel (5-20mm continuous graded gravel means that the particle size of various particles composing the crushed stone is between 5-20mm Between), and the particles below 10mm account for 40% of the total mass of the coarse aggregate; the fine aggregate is medium sand in zone 2, the fineness modulus is 2.2, and the particles below 0.3 account for 20% of the total mass of the fine aggregate;

[0009] The concrete mixing step is to continue stirring after adding a tackifier accounting for 3% of the total amount of the cementitious material at the end of the step, that is, the timing of adding the tackifier is to add after the concrete and other components are evenly mixed. The stirring time after the viscous is 1min; the time from the end of stirring to the start of the centrifugation process should be controlled within 10min;

[0010] In the ce...

Embodiment 2

[0012] In the present embodiment, in the preparation step of aggregate production, the coarse aggregate is continuously graded crushed stone of 5-20 mm, and the particles below 10 mm account for 50% of the total mass of the coarse aggregate; the fine aggregate is medium sand in Zone 2, The fineness modulus is 2.5, and the particles below 0.3 are 30% of the total mass of fine aggregate;

[0013] The concrete mixing step is to continue stirring after adding a tackifier accounting for 4% of the total amount of cementitious materials at the end of the step. The stirring time after the viscose is 2 minutes; the time from the end of the stirring to the start of the centrifugation process should be controlled within 11 minutes;

[0014] In the centrifugal piling step: low-speed, low-medium-speed, medium-speed, and high-speed centrifugation are performed sequentially, wherein the rotational speed and time of centrifugation are respectively: low speed 50-60r / min, time 3min, low-medium ...

Embodiment 3

[0016] In this example, in the preparation step of the aggregate production, the coarse aggregate is continuously graded crushed stone of 5-20 mm, and the particles below 10 mm account for 60% of the total mass of the coarse aggregate; the fine aggregate is medium sand in zone 2, The fineness modulus is 2.6, and the particles below 0.3 are 40% of the total mass of fine aggregate;

[0017] The concrete mixing step is to continue stirring after adding a tackifier accounting for 5% of the total amount of the cementitious material at the end of the step. The stirring time after the viscose is 3 minutes; the time from the end of the stirring to the start of the centrifugation process should be controlled within 13 minutes;

[0018] In the centrifugal piling step: low-speed, low-medium-speed, medium-speed, and high-speed centrifugation are performed sequentially, wherein the rotational speed and time of centrifugation are respectively: low speed 50-60r / min, time 3min, low-medium spe...

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Abstract

The invention provides a no-residual slurry forming technology of a centrifugal tubular pile. In a preparation step for producing aggregate, the coarse aggregate is 5-20mm continuously-graded broken stone, and the particles below 10mm account for over 40% of the total mass of the coarse aggregate; the fine aggregate is sand in the II region, the fineness modulus is 2.2-2.8, and the particles below 0.3mm account for less than 20% of the total mass of the fine aggregate; a tackifier is added to a step of concrete stirring, and the stirring time is not longer than 1min after adding the tackifier; the time from the stirring end to the centrifugation start is controlled within 10-15min; and in a centrifugal forming step, the centrifugation speed and time are properly controlled. The technology provided by the invention solves the problem that residual slurry is generated by centrifugation in the production of a tubular pile, improves the utilization rate of material, reduces consumption, realizes clean production, and protects the sanitation of a tubular pile production field and the environment around the factory relatively well.

Description

【Technical field】 [0001] The invention relates to a manufacturing process of a prestressed high-strength concrete pipe pile. 【Background technique】 [0002] Prestressed high-strength concrete pipe piles are widely used in construction projects because of their outstanding advantages such as short construction period, reliable quality, resource saving and less environmental pollution. According to relevant information, the output of pipe piles in my country has reached more than 300 million meters in 2011 , although the technical level of pipe pile manufacturing is constantly improving, the problem of centrifugal slurry produced in the production process of pipe piles has not been effectively solved. In addition to water, the centrifugal slurry also takes away a large amount of high-grade cement and admixtures At present, most of the remaining slurry in pipe pile factories is used to produce low value-added products such as cement, stone powder bricks, etc., and the economic be...

Claims

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Application Information

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IPC IPC(8): B28B21/30C04B26/00C04B28/00
Inventor 杨金辉董伟东冯三苟杨晓彬
Owner FUJIAN DADI CONCRETE PILE
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