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Nano-alumina enhanced concrete pumping agent

A nano-alumina and concrete pump technology, applied in the field of concrete admixtures, can solve the problems of increasing construction difficulty and production cost, concrete bleeding, reducing the efficiency of admixtures, etc., to improve frost resistance and corrosion resistance, and reduce slump Loss, satisfying the effect of long-distance transportation

Inactive Publication Date: 2016-01-27
JIESHOU SANBAO BODA BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only increases the difficulty of construction and the cost of production, but also easily leads to repeated mixing of the same or similar functional components in several admixtures, resulting in excessive mixing.
Especially when encountering several admixtures with poor compatibility or even incompatibility, the effectiveness of the admixture will be reduced, resulting in bleeding, segregation, and hardening of the concrete, so that it cannot be pumped

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) First add 12 parts of nano-alumina, 15 parts of β-naphthalene sulfonate sodium formal and 10 parts of calcium lignosulfonate to 35 parts of waste diesel oil, mix them evenly, and then microwave them at microwave frequency 2450MHz and power 800W for 15min , to obtain material I after cooling to room temperature;

[0023] (2) Add 25 parts of modified straw powder to 50 parts of ethanol, disperse evenly, and place it at 0-5°C for 30 minutes, then add 12 parts of polyamide resin, and mix well to obtain material II;

[0024] (3) Add 40 parts of volcanic ash to 250 parts of water, disperse evenly, add 12 parts of erythritol, 8 parts of polyurethane and 10 parts of palm oil, heat to 70°C and keep stirring for 15 minutes to obtain material III;

[0025] (4) Add material I, material II, material III, 15 parts of air-entraining agent and 6 parts of superphosphate into a ball mill, and ball mill until the fineness is less than 20 μm, and finally it can be directly packed in a ...

Embodiment 2

[0029] (1) First add 15 parts of nano-alumina, 20 parts of β-naphthalene sulfonate sodium formal and 15 parts of calcium lignosulfonate to 40 parts of waste diesel oil, mix well and then microwave at microwave frequency 2450MHz, power 800W for 15min , to obtain material I after cooling to room temperature;

[0030] (2) Add 30 parts of modified straw powder to 60 parts of ethanol, disperse evenly and place it at 0-5°C for 30 minutes, then add 16 parts of polyamide resin, and mix well to obtain material II;

[0031] (3) Add 45 parts of volcanic ash to 300 parts of water, disperse evenly, add 15 parts of erythritol, 12 parts of polyurethane and 15 parts of palm oil, heat to 80°C and keep stirring for 20 minutes to obtain material III;

[0032] (4) Add material I, material II, material III, 18 parts of air-entraining agent and 10 parts of superphosphate into a ball mill, and ball mill until the fineness is less than 20 μm. Finally, it can be directly packed in a solution barrel, o...

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Abstract

The invention discloses a nano-alumina enhanced concrete pumping agent, and relates to the technical field of concrete additives. The nano-alumina enhanced concrete pumping agent is prepared from, by weight, 10-15 parts of nano-alumina, 40-45 parts of volcanic ash, 25-30 parts of modified straw powder, 15-20 parts of beta-naphthalenesulfonic acid sodium-formaldehyde condensate, 13-18 parts of an air entraining agent, 12-16 parts of polyamide resin, 10-15 parts of calcium lignosulfonate, 10-15 parts of erythritol, 8-12 parts of polyurethane, 6-10 parts of calcium superphosphate, 10-15 parts of palm oil, 30-40 parts of waste diesel oil, 50-60 parts of ethanol and 250-300 parts of water. The pumping agent prepared in the invention has the characteristics of high water reduction rate and no chloride ions, can substantially improve the workability of concrete and reduce the water segregation rate, also can greatly reduce the slump loss, and completely meets long-distance transportation and construction requirements of pumped concrete.

Description

Technical field: [0001] The invention relates to the technical field of concrete admixtures, in particular to a nano-alumina reinforced concrete pumping agent. Background technique: [0002] Pumping agent, also known as concrete pumping agent. It is an admixture that improves the pumpability of concrete mixtures. The so-called pumpability means that the concrete mixture can pass through the pipeline smoothly without clogging, segregation, and good viscoplasticity. The pumping agent is composed of water reducing agent, retarder, air entraining agent, lubricant and so on. At present, in order to meet the concrete performance and construction requirements, it is often necessary to add one or more functional admixtures and pumping agents to the concrete to form a mixture. This not only increases the difficulty of construction and production cost, but also makes it very easy for the same or similar functional components in several admixtures to be mixed repeatedly, resulting i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/28C04B24/22C04B24/18C04B22/06
Inventor 高晓军
Owner JIESHOU SANBAO BODA BUILDING MATERIAL
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