Novel nano-modified high-strength concrete

A nano-modification and concrete technology, applied in the field of concrete, can solve the problems of affecting the range of use of concrete, affecting the performance of concrete, and reducing the remaining properties of concrete, so as to improve particle gradation and compactness, increase mechanical properties, and resist salt and frost. Effect of performance and high temperature resistance retention

Pending Publication Date: 2020-11-20
岑儒湛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using nanomaterials to improve a certain performance of concrete, it is very likely to affect another performance of concrete, which will reduce the remaining performance of modified concrete and affect the scope of use of concrete.

Method used

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  • Novel nano-modified high-strength concrete

Examples

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Effect test

Embodiment example 1

[0036] A novel nano-modified high-strength concrete, comprising the following components by mass fraction: The nano-modified high-strength concrete comprises the following components by mass fraction: 180 parts of water, 340 parts of Portland cement, aggregate 650 parts, 19 parts of nano silicon oxide, 230 parts of nano carbon fiber, 56 parts of silica fume, 72 parts of mineral powder, 3 parts of sodium lignosulfonate, 22 parts of quartz powder.

[0037] Including the following preparation methods:

[0038] 1) Weigh each raw material component according to the stated ratio;

[0039] 2) Add Portland cement, aggregate, silica fume and mineral powder into the mixer according to the weight ratio, and stir the mixer for 5 minutes;

[0040] 3) Dissolving sodium lignosulfonate into water, ultrasonically dispersing the nano-silicon oxide and nano-carbon fiber for 30 minutes respectively, and then adding into the water dissolved with sodium lignosulfonate;

[0041] 4) Add the water c...

Embodiment example 2

[0045] A novel nano-modified high-strength concrete, comprising the following components by mass fraction: The nano-modified high-strength concrete comprises the following components by mass fraction: 170 parts of water, 340 parts of Portland cement, aggregate 620 parts, 19 parts of nano-iron oxide, 230 parts of nano-carbon fiber, 52 parts of silica fume, 67 parts of mineral powder, 3 parts of sodium sulfite, and 22 parts of silicon nitride.

[0046] Including the following preparation methods:

[0047] 1) Weigh each raw material component according to the stated ratio;

[0048] 2) Add Portland cement, aggregate, silica fume and mineral powder into the mixer according to the weight ratio, and stir the mixer for 5 minutes;

[0049] 3) Dissolve sodium sulfite into water, ultrasonically disperse nano-iron oxide and nano-carbon fiber for 30 minutes respectively, and then add into water dissolved with sodium sulfite;

[0050] 4) Add water containing sodium sulfite, nano-iron oxid...

Embodiment example 3

[0054] A novel nano-modified high-strength concrete, comprising the following components by mass fraction: The nano-modified high-strength concrete comprises the following components by mass fraction: 200 parts of water, 400 parts of Portland cement, aggregate 650 parts, 13 parts of nano silicon oxide, 230 parts of nano carbon fiber, 60 parts of silica fume, 75 parts of mineral powder, 4 parts of sodium lignosulfonate, 25 parts of quartz powder.

[0055] Including the following preparation methods:

[0056] 1) Weigh each raw material component according to the stated ratio;

[0057] 2) Add Portland cement, aggregate, silica fume and mineral powder into the mixer according to the weight ratio, and stir the mixer for 5 minutes;

[0058] 3) Dissolving sodium lignosulfonate into water, ultrasonically dispersing the nano-silicon oxide and nano-carbon fiber for 30 minutes respectively, and then adding into the water dissolved with sodium lignosulfonate;

[0059] 4) Add the water c...

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Abstract

The invention relates to novel nano-modified high-strength concrete which comprises the following components in parts by mass: 170-220 parts of water; 340 to 460 parts of Portland cement; 600 to 850 parts of aggregate; 13-28 parts of a nano porous material; 220 to 250 parts of nanometer fibers; 50 to 80 parts of silica fume; 65 to 95 parts of mineral powder; 3-5 parts of a water reducing agent; 15-30 parts of a filling reinforcing material; according to the nano-modified high-strength concrete disclosed by the invention, Portland cement and aggregate are used as main materials of the concrete;the nano porous material and the nano fiber are added to modify the concrete, so that the mechanical property, the salt resistance, the frost resistance and the high temperature resistance of the concrete are improved, meanwhile, the overall workability and the flowability are maintained, internal pores of the concrete are effectively filled, and the grain composition and the compactness are improved.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a novel nano-modified high-strength concrete. Background technique [0002] Cement material is currently the most widely used and used building material, and has an unshakable position in infrastructure construction. With the increase in infrastructure investment, the demand for cement materials is increasing, and the demand for various performances such as the strength of concrete is also increasing. [0003] As a modified material, nanomaterials can make concrete have higher mechanical properties and durability, and broaden the application scope of concrete in high-rise building engineering, marine engineering and other fields. When using nanomaterials to improve a certain performance of concrete, it is very likely to affect another performance of concrete, reduce the remaining performance of modified concrete, and affect the scope of use of concrete. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/06C04B14/38C04B111/20
CPCC04B28/04C04B2111/00008C04B2111/20C04B2111/29C04B2201/52C04B18/146C04B14/02C04B14/068C04B14/062C04B14/386C04B20/006C04B18/141C04B24/18C04B14/06C04B14/308C04B20/008C04B22/14C04B14/328
Inventor 岑儒湛
Owner 岑儒湛
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