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Silicon dioxide aerogel foaming cement

A technology of silica and foamed cement, which is applied in the field of airgel foamed cement, can solve the problems of fire prevention, waterproof, and thermal insulation that cannot meet people's requirements, and achieve good water resistance, good sound insulation effect, and uniform distribution Effect

Pending Publication Date: 2016-06-01
ZHUO DA NEW MATERIAL TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventor has found through long-term observation, research and analysis that the fireproof, waterproof and thermal insulation properties of foamed cement can not meet people's requirements.

Method used

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  • Silicon dioxide aerogel foaming cement
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Examples

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Effect test

Embodiment 1

[0026] Example 1: Weigh 50 parts of ordinary silicon cement, 10 parts of silica airgel, 6 parts of micro-silica fume, and 5 parts of fly ash, all used for dry mixing and stirring; weigh appropriate amount of water, and heat the water to 42°C , add the powder into water, add 4 parts of coagulant water glass, 2 parts of water reducer sodium lignosulfonate, 6 parts of foam stabilizer silicone amide, stir evenly, add 10 parts of foaming agent rosin soap, Stir slightly, pour into the mold, and demould after 6 hours to obtain a foamed cement sample.

Embodiment 2

[0027] Example 2: Weigh 35 parts of ordinary silicon cement, 20 parts of silica airgel, 4 parts of micro-silica fume, and 10 parts of fly ash, all used for dry mixing and stirring; weigh appropriate amount of water, and heat the water to 42°C , put the powder into water, add 4 parts of coagulant water glass, 2 parts of water reducer sodium lignosulfonate, 5 parts of foam stabilizer silicone amide, stir evenly, add foaming agent dodecylbenzene 15 parts of sodium sulfonate, stirred slightly, poured into a mold, demolded after 6 hours to obtain a foamed cement sample.

Embodiment 3

[0028] Example 3: Weigh 55 parts of ordinary silicon cement, 15 parts of silica airgel, 6 parts of micro-silica fume, and 20 parts of fly ash, all used for dry mixing and stirring; weigh an appropriate amount of water, and heat the water to 42°C , add the powder into water, add 4 parts of coagulant water glass, 2 parts of water reducer sodium lignosulfonate, 4 parts of foam stabilizer silicone amide, stir evenly, add 10 parts of foaming agent rosin soap, Stir slightly, pour into the mold, and release the cement sample after 6 hours.

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Abstract

The invention discloses silicon dioxide aerogel foaming cement, comprising the following components in parts by mass: 30-65 parts of Portland cement, 10-30 parts of silicon dioxide aerogel, 4-10 parts of micro silicon powder, 2-4 parts of coagulant, 2-4 parts of water reducing agent, 4-8 parts of foam stabilizer, 5-15 parts of foaming agent, and 5-25 parts of coal ash. Compared with the prior art, the silicon dioxide aerogel foaming cement provided by the invention has a heat conductivity coefficient of 0.080-0.095W / (m.K), a sound absorbility of 0.09-0.19 percent, a dry volume density of 250-500kg / m<3> and a compressive press strength of 3.5-5.0Mpa, and has better waterproofness, low percentage of contraction, long service life, simple construction and easy operation.

Description

technical field [0001] The invention relates to a gelling agent, in particular to an airgel foamed cement. Background technique [0002] Foamed cement is to fully foam the foaming agent mechanically through the foaming system of the foaming machine, and evenly mix the foam with the cement slurry, and then carry out cast-in-place construction or mold molding through the pumping system of the foaming machine. A new type of lightweight thermal insulation material containing a large number of closed pores formed by curing. Foamed cement is a foam-like thermal insulation material, and its outstanding feature is the formation of closed foam pores inside the concrete, which makes the concrete lightweight and thermally insulated. [0003] Airgel is a solid material form, and its product has high porosity and low density. The fine nano-network structure of silica airgel effectively limits the propagation of local thermal excitation. Nano-micropores have a large specific surface are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/02
CPCC04B28/04C04B2111/27C04B2111/343C04B2111/40C04B2111/52
Inventor 杨卓舒刘建波刘国强邝清林冯强张磊陈赓车君超
Owner ZHUO DA NEW MATERIAL TECH GRP
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