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Light porous calcium carbonate material and preparation method thereof

A porous calcium carbonate, lightweight technology, applied in the field of materials, can solve the problems of achieving a stable state, low yield, and difficulty, and achieve the effect of improving freeze-thaw resistance and temperature tolerance

Inactive Publication Date: 2020-01-17
CHINA ACAD OF CIVIL AVIATION SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, as a cementitious material, the strength of cement comes from the hydration of various minerals in cement, alkali aggregate and other reactions. The reaction is a continuous reaction kinetic process, which is reflected in the process of gradual increase in strength. It is difficult to reach a stable state in a short time
The above characteristics make cement-based foam concrete used as EMAS characteristic material, poor process stability, low yield and long maintenance period

Method used

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  • Light porous calcium carbonate material and preparation method thereof
  • Light porous calcium carbonate material and preparation method thereof
  • Light porous calcium carbonate material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A kind of lightweight porous calcium carbonate foam material, each raw material is counted as: 100 parts of Ca(OH) by mass percentage 2 Powder, 0.75 parts of polypropylene fiber, 10 parts of silica fume, 7 parts of foaming agent (35% hydrogen peroxide), 50 parts of water, 1 part of foam stabilizer (sodium lauryl sulfate), 1.5 parts of water reducing agent agent (polycarboxylate superplasticizer), 5 parts of waterproofing agent (calcium stearate), and 5 parts of coagulation regulator (Portland cement).

[0043] A kind of preparation method of above-mentioned light porous calcium carbonate foam material, comprises the following steps:

[0044] 1) Take each raw material according to the above raw material ratio;

[0045] 2) Put the powdery raw materials and fibers in the cement mortar mixing pot and stir slowly for 30s to make the solid raw materials mix evenly;

[0046]3) Add mixing water, waterproofing agent, foam stabilizer, etc. into the dry mixing powder, and stir r...

Embodiment 2

[0051] A kind of lightweight porous calcium carbonate foam material, each raw material is counted as: 100 parts of Ca(OH) by mass percentage 2 Powder, 0.75 parts of polypropylene fiber, 20 parts of calcium carbonate powder, 8 parts of silica fume, 10 parts of foaming agent (35% hydrogen peroxide), 45 parts of water, 5 parts of P.I42.5 cement, 1.5 parts Foam stabilizer (calcium stearate), 2 parts of water-reducing agent (melamine-based water-reducing agent), 5 parts of water-repellent (silicone-based water-repellent).

[0052] A kind of preparation method of above-mentioned light porous calcium carbonate foam material, comprises the following steps:

[0053] 1) Take each raw material according to the above raw material ratio;

[0054] 2) Put the powdery raw materials and fibers in the cement mortar mixing pot and stir slowly for 30s to make the solid raw materials mix evenly;

[0055] 3) Add mixing water, waterproofing agent, foam stabilizer, etc. into the dry mixing powder, ...

Embodiment 3

[0060] A kind of lightweight porous calcium carbonate foam material, each raw material is counted as: 100 parts of Ca(OH) by mass percentage 2 Powder, 0.75 parts of polypropylene fiber, 30 parts of calcium carbonate powder, 10 parts of silica fume, 10 parts of foaming agent (concentration is 35% hydrogen peroxide), 45 parts of water, 2.5 parts of foam stabilizer (hydroxymethyl cellulose Ether), 2.5 parts of water reducer (polycarboxylate water reducer), 5 parts of water repellent (calcium stearate), 7 parts of coagulation regulator (high alumina cement).

[0061] A kind of preparation method of above-mentioned light porous calcium carbonate foam material, comprises the following steps:

[0062] 7) taking each raw material according to the above raw material ratio;

[0063] 8) Put the powdery raw materials and fibers in the cement mortar mixing pot and stir slowly for 30s to make the solid raw materials mix evenly;

[0064] 9) Add mixing water, waterproofing agent, foam stabi...

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Abstract

The invention discloses a light porous calcium carbonate material and a preparation method thereof. The light porous calcium carbonate material is prepared by combining a cementing material and an inorganic admixture, and a main component of the material after an air hardening reaction is calcium carbonate. Compared with common cement-based light porous concrete materials, the light porous calciumcarbonate material provided by the invention has the following advantage that the mineral component of raw materials of the light porous calcium carbonate material is single, and the reaction degreeof the material is high in a curing stage, so that properties such as carbonization resistance, mechanical property stability during the service life, temperature tolerance and the like are improved.Through adjustment of the content of functional components (a foam stabilizer, a water reducing agent, a setting regulator, a waterproof agent, an anti-cracking component, etc.), performance of the material and process stability can be adjusted. The material has low penetration strength and density, has a specific mechanical characteristic of energy absorption during crushing, and can be used in an engineered material arresting system at the end of airport runways.

Description

technical field [0001] The invention belongs to the field of materials, and relates to a calcium carbonate foam material and a preparation method thereof, in particular to a prefabricated lightweight porous calcium carbonate used in an airport runway end characteristic material arresting system (Engineered Materials Arresting System, referred to as EMAS) Materials and their preparation methods. Background technique [0002] Statistical data both at home and abroad show that among the accidents that seriously endanger the safety of civil aviation flight, the aircraft overshooting / deviating from the runway ranks first. important. ICAO stipulates in "Annex 14-Airports" that for instrument runways with reference codes 1 or 2 and runways with reference codes 3 or 4, a runway end safety zone must be set. The length of the safety zone at the end of the runway should not be less than 90m from the lifting belt, and it is recommended to reach 240m. However, due to the constraints o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/12C04B38/02
CPCC04B28/12C04B38/02C04B16/0633C04B18/146C04B22/068C04B22/002C04B24/16C04B2103/302C04B24/085C04B7/02C04B14/28C04B24/42C04B24/383C04B7/32
Inventor 赵阳金浪史亚杰
Owner CHINA ACAD OF CIVIL AVIATION SCI & TECH
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