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Cement-based nanocomposite material and preparation method thereof

A nano-composite material and cement-based technology, which is applied in the field of cement-based nano-composite materials and their preparation, can solve problems such as difficult mechanical properties of materials, achieve high toughness, improve compressive strength, and improve mechanical properties

Active Publication Date: 2015-03-25
HUNAN MINGXIANG TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of the above materials are still difficult to meet the requirements of some special fields.

Method used

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  • Cement-based nanocomposite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh each raw material: Portland cement: 50kg, silica fume: 10kg, nano-CaO: 0.15kg, nano-CaCO 3 : 1 kg, nano-Al 2 o 3 : 0.25 kg, fibrous nano-calcium silicate: 1 kg, 325 mesh quartz powder: 18 kg, 0.4~0.6mm quartz sand: 25 kg, high-strength fine steel fiber: 25 kg, high-performance water reducer: 1 kg. Portland cement, silica fume, nano-CaO, nano-CaCO 3 , Nano Al 2 o 3, Fibrous nano-calcium silicate and stirred for 5 minutes, then put 325-mesh quartz powder and quartz sand into the mixer and stirred for 3 minutes, added 12 kg of the aqueous solution containing high-performance water reducing agent into the mixer and stirred until fluidized, then continued to stir for 2 minutes, then, Add steel fiber while stirring, add steel fiber slowly and evenly within 3 minutes, pour it into a mold after stirring evenly, remove the mold after the mixture is hardened, and put it in saturated water vapor at 90°C for 4 days for curing.

[0028] The Portland cement is P·II 52.5 gr...

Embodiment 2

[0030] Weigh each raw material: Portland cement: 50kg, silica fume: 10kg, nano-CaO: 0.15kg, nano-CaCO 3 : 1 kg, nano-Al 2 o 3 : 0.25 kg, fibrous nano-calcium silicate: 1 kg, 325 mesh quartz powder: 18 kg, 0.4~0.6mm quartz sand: 25 kg, high-strength fine steel fiber: 25 kg, high-performance water reducer: 1 kg. Portland cement, silica fume, nano-CaO, nano-CaCO 3 , Nano Al 2 o 3 , Fibrous nano-calcium silicate and stirred for 5 minutes, then put 325-mesh quartz powder and quartz sand into the mixer and stirred for 3 minutes, added 12 kg of the aqueous solution containing high-performance water reducing agent into the mixer and stirred until fluidized, then continued to stir for 2 minutes, then, Add steel fiber while stirring, slowly and evenly add steel fiber within 3 minutes, pour it into the mold after stirring evenly, apply a pressure of 30MPa, pressurize for 30 minutes and then demould, after the mixture is hardened, put it in 90℃ saturated water Cured in steam for 4 da...

Embodiment 3

[0033] Weigh each raw material: Portland cement: 50kg, silica fume: 10kg, nano-CaO: 0.15kg, nano-CaCO 3 : 1 kg, nano-Al 2 o 3 : 0.25 kg, fibrous nano-calcium silicate: 1 kg, 325 mesh quartz powder: 18 kg, 0.4~0.6mm quartz sand: 25 kg, high-strength fine steel fiber: 25 kg, high-performance water reducer: 1 kg. Portland cement, silica fume, nano-CaO, nano-CaCO 3 , Nano Al 2 o 3 , Fibrous nano-calcium silicate and stir for 5 minutes, then put 325 mesh quartz powder and quartz powder into the mixer and stir for 3 minutes, add 12 kg of aqueous solution dissolved in high-performance water reducing agent into the mixer and stir until fluidized, continue stirring for 2 minutes, then, Add steel fiber while stirring, add steel fiber slowly and evenly within 3 minutes, pour it into a mold after stirring evenly, remove the mold after the mixture is hardened, and put it in high temperature and high pressure saturated steam at 215°C for 3 days for curing.

[0034] The Portland cement ...

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Abstract

The invention relates to an inorganic nanocomposite material and a preparation method thereof and in particular relates to a cement-based nanocomposite material and a preparation method thereof. The invention provides a cement-based nanocomposite material in order to improve the mechanical property of a cement-based material. The cement-based nanocomposite material comprises the following raw materials in parts by weight: 1 part of silicate cement, 0.15-0.25 part of silicon ash, 0.003-0.006 part of nano CaO, 0.01-0.02 part of nano CaCO3, 0.005-0.01 part of nano Al2O3, 0.01-0.02 part of fibrous nano calcium silicate or 0.001-0.002 part of carbon nanofibers, 0.3-0.4 part of 325-mesh quartz powder or glass powder, 0.45-0.55 part of quartz sand with a particle diameter of 0.4-0.6mm, 0.4-0.6 part of steel fiber, 0.015-0.025 part of a high-performance water reducer and 0.18-0.25 part of water. The mechanical property of the cement-based nanocomposite material is improved to a great extent.

Description

technical field [0001] The invention relates to an inorganic nanocomposite material and a preparation method thereof, in particular to a cement-based nanocomposite material and a preparation method thereof. Background technique [0002] Active nano-inorganic composite material is a kind of Portland cement as the main cementing material, which is reinforced and toughened by high-strength orthopedics, active nano-materials (powder and fiber) and metal fibers, and is formed after curing at high temperature or high temperature and high pressure saturated steam It is an inorganic composite material, which belongs to ultra-high performance cement-based composite material. [0003] Ultra-high-performance cement-based materials were developed after the invention of Densified Systems Containing homogeneously arranged ultra-fine Particles (DSP) cementitious materials by H.H.Bache of Aalborg Cement Company in Denmark in the 1980s. H.H.Bache's evenly distributed ultra-fine and dense sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
Inventor 吴罗明黄政宇
Owner HUNAN MINGXIANG TECH DEV
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