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Lightweight early-strength magnesium-based cement concrete mixing equipment and application thereof

A cement concrete and lightweight technology, which is applied in the direction of cement mixing equipment, clay preparation equipment, chemical instruments and methods, etc., can solve the problems of insufficient carbonation and inability to meet the mixing of cement concrete in extreme climate areas, so as to improve the compactness and improve the The effect of microstructure

Pending Publication Date: 2021-10-15
天应(深圳)生态建材科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a light early-strength magnesium-based cement concrete mixing equipment and its application to at least solve the problem of insufficient early hydration and carbonation of the magnesium-based cement concrete fresh slurry mixed by the existing mixing equipment, which cannot meet the needs of cement concrete in extreme climate regions. mixing problem

Method used

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  • Lightweight early-strength magnesium-based cement concrete mixing equipment and application thereof
  • Lightweight early-strength magnesium-based cement concrete mixing equipment and application thereof
  • Lightweight early-strength magnesium-based cement concrete mixing equipment and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The airtight mixing equipment for lightweight early-strength magnesium-based cement concrete disclosed in Example 1 includes a sealable hopper, and a temperature control facility is provided at the lower part of the hopper, and the temperature control facility can regulate the temperature in the hopper.

[0033] In this embodiment, cement concrete raw materials can be placed in the hopper, and the temperature and pressure of the hopper can be adjusted by using temperature control facilities, so that the temperature and pressure of the hopper are suitable for cement concrete mixing. This embodiment solves the problems of insufficient hydration and early carbonation of cement concrete. Free water volatilizes, suitable for extreme climate environment, wide area of ​​use.

[0034] Preferably, the hopper is spindle-shaped and can rotate axially.

[0035] Wherein, the lower part of the hopper is provided with a frame, and this embodiment is also provided with a control device...

Embodiment 2

[0046] Embodiment 2,3 The application of light early strength magnesium-based cement concrete airtight mixing equipment comprises the following steps:

[0047] S101, weighing the powder particles with a particle size less than 2.36mm in the magnesium-based cement concrete raw material according to the proportion, and then stirring evenly;

[0048] S102, adding S101 powder to the closed mixing equipment of lightweight early-strength magnesium-based cement concrete for closed mixing;

[0049] S103, add the S102 slurry, water, and particles with a particle size greater than 2.36 mm to the light early-strength magnesium-based cement concrete closed mixing equipment and mix evenly. The slurry stirred in this embodiment can be poured or 3D printed.

[0050] Comparative example 1 and comparative example 2 use traditional concrete mixer mixing equipment, and mix according to conventional methods.

[0051] Embodiment 2, Comparative Example 1 Magnesium-based cement concrete raw materia...

Embodiment 3

[0052] Embodiment 3, comparative example 2 magnesium-based cement concrete formula, comprise following raw materials in parts by weight: 100 parts of magnesia, 50 parts of phosphate, 100 parts of magnesium salt, 8 parts of citric acid monohydrate, 70 parts of phosphogypsum, magnesium-based standard sand 150 parts, 50 parts water slag sand, 50 parts gravel, 40 parts engineering dregs, 20 parts dry ice, 20 parts water;

[0053] Wherein, magnesia described in embodiment 2-3, comparative example 1-2 comprises light-burned magnesia and dead-burned magnesia;

[0054] The magnesium-based standard sand is composed of light-burned magnesia and dead-burned magnesia of different particles.

[0055]The fineness modulus of the magnesium-based standard sand is 3.5; the fineness modulus of the water slag sand is 3.8; the sand content of the engineering dregs is 23.16%, and the fineness modulus of the contained sand is 1.2; The magnesium sulfate heptahydrate has a content of 98% and a finene...

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Abstract

The invention discloses lightweight early-strength magnesium-based cement concrete mixing equipment and application. The equipment comprises a hopper, the lower part of the hopper is provided with a temperature control facility, and the temperature control facility can regulate and control the temperature in the hopper; the hopper is fusiform and can axially rotate; one end of the hopper is provided with a hopper cover, and the hopper is provided with a barometer and a thermometer; a rotating shaft is arranged at the other end of the hopper and is in transmission connection with a motor; the temperature control facility comprises a material groove, a temperature control material is arranged in the material groove, cement concrete can be mixed in a sealed manner through the equipment, mixing can be conducted at different temperatures and pressures, and the application range of magnesium-based cement concrete is expanded; according to the equipment, fresh slurry is fully hydrated and carbonized, the microstructure in magnesium-based cement is improved, and the compactness, macroscopic mechanical property and durability of the magnesium-based cement are improved; meanwhile, water granulated slag sand and engineering residue soil can be directly applied to concrete products; and magnesium-based standard sand can replace quartz standard sand and participate in a hydration reaction.

Description

technical field [0001] The invention relates to concrete mixing equipment, in particular to a lightweight early-strength magnesium-based cement concrete mixing equipment and its application. Background technique [0002] Magnesium-based cement includes magnesium oxychloride cement, magnesium oxysulfide cement, magnesium phosphate cement, etc. Magnesium-based cement is a low-carbon cement with good development prospects. Magnesium-based cement generally has the characteristic of large heat of hydration, which generates temperature stress inside the magnesium-based cement product, causing cracking of the magnesium-based cement product; Portland cement also has the problem of cracking due to temperature stress after large-volume pouring How to solve the problem of Portland cement and magnesium-based cement cracking due to temperature stress has always been a technical problem that plagues the academic and engineering circles. [0003] The prior art discloses solutions to the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28C5/26B28C5/00C04B28/30C04B28/34C04B111/20
CPCB28C5/26B28C5/003C04B28/30C04B28/348C04B2201/50C04B2111/20C04B22/066C04B22/142C04B24/06C04B18/0445C04B14/06C04B18/141C04B14/02C04B18/16C04B22/06C04B22/16C04B22/12
Inventor 寇世聪崔棚罗富明
Owner 天应(深圳)生态建材科技有限公司
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