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Bacterial cellulose reinforced high elastic modulus mortar for prefabricated buildings and preparation method thereof

A technology for bacterial cellulose and construction, which is applied in the field of bacterial cellulose-enhanced high-elastic mold mortar for prefabricated construction and its preparation, can solve problems such as immaturity in technology and management, and achieve increased cohesion and flow. properties, and the effect of improving mechanical properties

Active Publication Date: 2021-01-01
浙江省通用砂浆研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with the traditional cast-in-place construction method, the prefabricated building construction method has the advantages of shortening the construction period, reducing on-site labor, and improving building quality, which is in line with my country's green development direction. However, my country's prefabricated building is in the early stage of development, and its technology and management are not mature. , there is a lot of room for development

Method used

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  • Bacterial cellulose reinforced high elastic modulus mortar for prefabricated buildings and preparation method thereof
  • Bacterial cellulose reinforced high elastic modulus mortar for prefabricated buildings and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Grind the dried bacterial cellulose to 50-100 μm, then add it to the aqueous acetic acid solution, add sodium carboxymethyl cellulose, and disperse it by ultrasonic at 20 kHz for 20 minutes until uniform, to obtain a bacterial cellulose suspension, wherein the bacterial cellulose The content of sodium carboxymethyl cellulose in the cellulose suspension is 0.6%, and the content of bacterial cellulose is 12%.

[0025] (2) Add triterpene saponin or alkyl sulfonate into the solvent and mix evenly, then add 0.1-1mm porous metal oxide, 5-20mm porous molecular sieve and 30-40mm porous regenerative building with a mass ratio of 1:3:1 Particles, wherein the pore size of the porous particle material is 80-300 μm, after slowly stirring at a speed of 50r / min for 1-2h, adding an epoxy resin polymer, stirring evenly at a speed of 5000r / min for 5min, and obtaining adsorption attraction The particle packing solution of the air-entraining agent, wherein the content of the air-entrai...

Embodiment 2

[0028] (1) Grind the dried bacterial cellulose to 50-100 μm, then add it to the aqueous acetic acid solution, add sodium carboxymethyl cellulose, and disperse it by ultrasonic at 30 kHz for 30 minutes until it is uniform to obtain a bacterial cellulose suspension, wherein the bacterial cellulose The content of sodium carboxymethyl cellulose in the cellulose suspension is 0.75%, and the content of bacterial cellulose is 18%.

[0029] (2) Add triterpene saponin or alkyl sulfonate into the solvent and mix evenly, then add 0.1-1mm porous metal oxide, 5-20mm porous molecular sieve and 30-40mm porous regenerative building with a mass ratio of 1:5:2 Particles, wherein the porous particle material has a pore size of 80-300 μm, after slowly stirring at a speed of 100r / min for 2h, adding epoxy resin polymer, stirring evenly at a speed of 12000r / min for 20min, and obtaining an adsorption air-entraining agent The particle filler solution, wherein, the content of the air-entraining agent i...

Embodiment 3

[0032](1) Grind the dried bacterial cellulose to 50-100 μm, then add it to the aqueous acetic acid solution, add sodium carboxymethyl cellulose, and disperse ultrasonically for 25 minutes at a power of 25 kHz until uniform to obtain a bacterial cellulose suspension, wherein the bacterial cellulose The content of sodium carboxymethyl cellulose in the cellulose suspension is 0.65%, and the content of bacterial cellulose is 15%.

[0033] (2) Add triterpene saponin or alkyl sulfonate into the solvent and mix evenly, then add 0.1-1mm porous molecular sieve, 5-20mm porous regenerative building particles and 30-40mm porous regenerative building with a mass ratio of 1:4:1.5 Particles, wherein the pore size of the porous granular material is 80-300 μm, after slowly stirring at a speed of 80r / min for 1.5h, adding epoxy resin polymer, stirring evenly at a speed of 8000r / min for 10min, to obtain adsorption air The particle filler solution of the agent, wherein, the content of the air-entr...

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Abstract

The invention provides a bacterial cellulose enhanced high-elastic-modulus mortar for fabricated buildings and a preparation method of the bacterial cellulose enhanced high-elastic-modulus mortar forthe fabricated buildings. The bacterial cellulose enhanced high-elastic-modulus mortar comprises Portland cement, yellow sand, air entraining agent adsorbed particle filler, bacterial cellulose and water, wherein the air entraining agent adsorbed particle filler refers to one or more of porous regenerated construction particles, porous molecular sieves or porous metal oxides with polymers wrappingan air entraining agent. The preparation process includes: grinding dried bacterial cellulose, adding into acetic acid aqueous solution, adding sodium carboxymethyl cellulose, and ultrasonically welldispersing to obtain bacterial cellulose suspension; adding the air entraining agent into a solvent, well mixing, adding porous particle materials, slowly stirring, adding the polymers, well stirringto realize coating to obtain air entraining agent adsorbed particle filler solution; well mixing Portland cement, yellow sand, the air entraining agent adsorbed particle filler solution and the bacterial cellulose suspension, adding a water reducing agent, and well mixing to obtain the bacterial cellulose enhanced high-elastic-modulus mortar for the fabricated buildings.

Description

technical field [0001] The invention belongs to the technical field of mortar materials for prefabricated buildings, and in particular relates to a bacterial cellulose-reinforced high elastic modulus mortar for prefabricated buildings and a preparation method thereof. Background technique [0002] With the development of the country and the improvement of people's living conditions, the total consumption of energy continues to increase, and energy conservation is becoming more and more important to my country's sustainable development. Prefabricated building is a production method integrating standardized design, factory production, assembly construction, integrated decoration, information management and intelligent application. It refers to the prefabrication of building components, parts and materials in factories. , and then transported to the construction site for installation, and finally connect the formed building products by means of grout anchors or post-cast concre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B20/10
CPCC04B20/1074C04B28/04C04B2201/50C04B14/06C04B24/383C04B18/027C04B2103/304C04B2103/302C04B18/16C04B20/1066C04B20/1022C04B20/1037
Inventor 蒋晓燕汤薇洪峰
Owner 浙江省通用砂浆研究院
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