Preparation method of modified aluminate cement retarder for producing Z-shaped concrete hollow blocks

A kind of technology of aluminate cement and hollow block, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of unfavorable enterprise development, high production cost, etc., to prolong the hydration hardening time, The effect of reducing production and transportation costs and reducing production costs

Pending Publication Date: 2021-04-13
马鞍山市国林建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the production cost of concrete retarders is relatively high, which is not conducive to the development of enterprises

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of a modified aluminate cement retarder for the production of Z-shaped concrete hollow blocks, specifically as follows:

[0024] In parts by mass, take 5 parts of modified kapok fiber, 5 parts of modified coconut fiber, 20 parts of sodium lignosulfonate, 5 parts of sodium dinaphthylmethane disulfonate, 1 part of water reducer, unsaturated carboxylic acid Prepared by mixing 1 part, 2 parts of boric acid and 5 parts of vermiculite.

[0025] Further, the water reducer is a sulfamate high-efficiency water reducer.

[0026] Further, the modified kapok fiber, its preparation method specifically comprises the following steps:

[0027] (1) Dry the natural kapok fibers to a moisture content of 4%-6%, and then place them in a variable temperature box for variable temperature treatment. High temperature treatment for 3-8 minutes, repeated high and low temperature treatment for 5-10 times, to obtain variable temperature kapok fiber;

[0028] (2) Place the te...

Embodiment 2

[0038] A preparation method of a modified aluminate cement retarder for the production of Z-shaped concrete hollow blocks, specifically as follows:

[0039] In terms of parts by mass, take 10 parts of modified kapok fiber, 10 parts of modified coconut fiber, 30 parts of sodium lignin sulfonate, 8 parts of sodium dinaphthyl methane disulfonate, 1 part of water reducer, unsaturated carboxylic acid 3 parts, 5 parts of boric acid and 10 parts of vermiculite are mixed.

[0040] Further, the water reducer is a sulfamate high-efficiency water reducer.

[0041] Further, the modified kapok fiber, its preparation method specifically comprises the following steps:

[0042] (1) Dry the natural kapok fibers to a moisture content of 4%-6%, and then place them in a variable temperature box for variable temperature treatment. High temperature treatment for 3-8 minutes, repeated high and low temperature treatment for 5-10 times, to obtain variable temperature kapok fiber;

[0043] (2) Place...

Embodiment 3

[0053] A preparation method of a modified aluminate cement retarder for the production of Z-shaped concrete hollow blocks, specifically as follows:

[0054] In parts by mass, take 8 parts of modified kapok fiber, 8 parts of modified coconut fiber, 25 parts of sodium lignosulfonate, 6 parts of sodium dinaphthyl methane disulfonate, 3 parts of water reducer, unsaturated carboxylic acid 2 parts, 3 parts of boric acid and 8 parts of vermiculite are mixed.

[0055] Further, the water reducer is a sulfamate high-efficiency water reducer.

[0056] Further, the modified kapok fiber, its preparation method specifically comprises the following steps:

[0057] (1) Dry the natural kapok fibers to a moisture content of 4%-6%, and then place them in a variable temperature box for variable temperature treatment. High temperature treatment for 3-8 minutes, repeated high and low temperature treatment for 5-10 times, to obtain variable temperature kapok fiber;

[0058] (2) Place the temperat...

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Abstract

The invention discloses a preparation method of a modified aluminate cement retarder for producing Z-shaped concrete hollow blocks. The retarder is specifically prepared by mixing the following components in parts by mass: 5-10 parts of modified kapok fiber, 5-10 parts of modified coconut fiber, 20-30 parts of sodium lignin sulfonate, 5-8 parts of sodium dinaphthalenemethane disulfonate, 1-6 parts of water reducing agent, 1-3 parts of unsaturated carboxylic acid, 2-5 parts of boric acid and 5-10 parts of vermiculite. The modified kapok fiber and the modified coconut fiber are added into a common retarder, so that the production cost of the retarder is greatly reduced on the premise of not influencing the effect of the retarder, the production and transportation cost of cement is greatly reduced, the hydration hardening time of the cement is effectively prolonged, and the plasticity of fresh concrete can be kept for a long time, so that the setting time of the fresh concrete is adjusted.

Description

technical field [0001] The invention relates to the technical field of concrete production, in particular to a preparation method of a modified aluminate cement retarder for the production of Z-shaped concrete hollow blocks. Background technique [0002] Concrete refers to the artificial stone made of cement as the main cementitious material, mixed with water, sand, stones, chemical admixtures and mineral admixtures when necessary, mixed in appropriate proportions, uniformly stirred, compacted and cured. Concrete is mainly divided into two stages and states: the plastic state before setting and hardening, that is, fresh concrete or concrete mixture; the hard state after hardening, that is, hardened concrete or concrete. The strength grade of concrete is divided by the standard value of cubic compressive strength, and the strength grade of ordinary concrete in China is divided into 14 grades. [0003] The purpose of adding retarder in commercial concrete is to prolong the hy...

Claims

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Application Information

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IPC IPC(8): C04B24/20C04B20/04C04B20/02C04B103/22C04B18/24
CPCC04B40/0039C04B20/04C04B20/023C04B2103/22C04B18/248C04B24/18C04B24/20C04B24/04C04B2103/302C04B22/0013C04B14/202Y02W30/91
Inventor 王学军
Owner 马鞍山市国林建材有限公司
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