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Preparation method of centrifugal concrete water supply-drainage pipe capable of reducing using amount of binding material

A technology of cementitious materials and water supply and drainage pipes, which is applied in the field of building materials, can solve the problems of high cementitious material consumption of centrifugal concrete water supply and drainage pipes, and achieve the effects of facilitating promotion, reducing production, and reducing processing costs

Inactive Publication Date: 2015-07-29
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem of high cementitious material consumption of centrifugal concrete water supply and drainage pipes, the present invention provides a preparation method of centrifugal concrete water supply and drainage pipes that reduces the cementitious material consumption

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0028] A method for preparing a centrifugal concrete water supply and drainage pipe for reducing the amount of cementitious material, comprising the steps of:

[0029] 1) Prepare and mix concrete, the total mass of the concrete per cubic meter is 2450kg, of which the mass of cementitious material is 375kg, the mass ratio of water to cementitious material is 0.40:1, and the amount of water reducer is 1% of the mass of cementitious material 1.2%, the amount of air-entraining agent is 0.005% of the mass of the cementitious material, and the balance is sand and gravel, wherein the mass ratio of sand to sandstone is 0.32:1, cement accounts for 60% in the cementitious material, and minerals are mixed material accounted for 40%;

[0030] 2) Put the mixed concrete into the feeder to distribute the material, and the mold is closed;

[0031] 3) The pipeline is centrifuged, so that the gas introduced by the air-entraining agent in the concrete is squeezed out;

[0032] 4) Steam curing,...

Embodiment 2

[0039] A method for preparing a centrifugal concrete water supply and drainage pipe for reducing the amount of cementitious material, comprising the steps of:

[0040] 1) Prepare and mix concrete. The total mass of the concrete per cubic meter is 2400kg, of which the mass of cementitious material is 355kg. The mass ratio of water to cementitious material is 0.42:1. 1.0%, the amount of air-entraining agent is 0.02% of the cementitious material quality, and the balance is sand and gravel, wherein the mass ratio of sand to sandstone is 0.34:1, cement accounts for 70% in the cementitious material, mineral blending material accounted for 30%;

[0041] 2) Put the mixed concrete into the feeder to distribute the material, and the mold is closed;

[0042] 3) The pipeline is centrifuged, so that the gas introduced by the air-entraining agent in the concrete is squeezed out;

[0043] 4) Steam curing, the curing time is 6 hours;

[0044] 5) Pipe demoulding.

[0045] Further, the pipe...

Embodiment 3

[0051] A method for preparing a centrifugal concrete water supply and drainage pipe for reducing the amount of cementitious material, comprising the steps of:

[0052] 1) Prepare and mix concrete. The total mass of the concrete per cubic meter is 2380kg, of which the mass of cementitious material is 340kg. The mass ratio of water to cementitious material is 0.45:1. 0.8%, the amount of air-entraining agent is 0.04% of the cementitious material mass, and the balance is sand and gravel, wherein the mass ratio of sand to sandstone is 0.36:1, cement accounts for 80% in the cementitious material, and minerals are mixed material accounted for 20%;

[0053] 2) Put the mixed concrete into the feeder to distribute the material, and the mold is closed;

[0054] 3) The pipeline is centrifuged, so that the gas introduced by the air-entraining agent in the concrete is squeezed out;

[0055] 4) Steam curing, the curing time is 8 hours;

[0056] 5) Pipe demoulding.

[0057] Further, the p...

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Abstract

The invention discloses a preparation method of a centrifugal concrete water supply-drainage pipe capable of reducing the using amount of a binding material. The preparation method comprises the following steps: (1) preparing and stirring concrete, wherein the total mass of the concrete in every cubic meter is 2380 to 2450 kg, the mass of the binding material is 340 to 375 kg, the mass ratio of water to the binding material is (0.40-0.45):1, the using amount of a water reducing agent is 0.8% to 1.2% of the mass of the binding material, the using amount of an air entraining agent is 0.005% to 0.04% of the mass of the binding material, the balance comprises sand and stone, and the mass ratio of the sand to the stone is (0.32-0.36):1; (2) feeding the stirred concrete to a feeding machine for material distribution, and carrying out mold assembling; (3) carrying out pipeline centrifugation; (4) carrying out steam curing; (5) carrying out pipeline demolding. According to the preparation method, through the addition of the air entraining agent, the using amount of the pipeline binding material is reduced, the amount of residual slurry is reduced, and the influence on strength and durability is avoided.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a method for preparing a centrifugal concrete water supply and drainage pipe which reduces the amount of cementitious materials. Background technique [0002] Concrete water supply and drainage pipes are commonly used precast concrete products in municipal construction. Its molding methods mainly include centrifugal molding, suspension roller molding, vertical vibration molding, vertical extrusion vibration molding, and mandrel vibration molding. This patent is aimed at concrete water supply and drainage pipes that adopt centrifugal molding methods. [0003] The production process of centrifugal concrete water supply and drainage pipes is generally mixing concrete; the mixed concrete is distributed into the mold through the distributor; high-speed centrifugation makes the concrete close to the mold to form a ring, and the excess water and part of the glue Extrude the condensate...

Claims

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Application Information

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IPC IPC(8): C04B28/00B28B21/30
Inventor 吴小环杨医博战营谢瑜航王俊鑫郭文瑛王恒昌
Owner SOUTH CHINA UNIV OF TECH
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