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A kind of durable foam concrete and preparation method thereof

A foamed concrete, durable technology, applied in the field of building materials, can solve the problems of product service life, unstable foam structure, product performance deterioration, etc., to achieve the effect of prolonging service life, avoiding collapse failure, and strengthening foaming effect.

Active Publication Date: 2020-09-18
江苏鸿宇天盛新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem mainly solved by the present invention is: in the process of preparation and use of traditional foam concrete, the foam structure is unstable and prone to collapse, and with the continuous invasion of moisture and carbon dioxide in the external environment, the product performance is further deteriorated, making the product The shortcoming that the service life is seriously affected provides a kind of durable foam concrete and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0045] Acid-treated sepiolite:

[0046] Add sepiolite and hydrochloric acid with a mass fraction of 1% into a hydrothermal kettle at a mass ratio of 1:20. Under the conditions of a temperature of 160°C and a pressure of 1.8MPa, after hydrothermal reaction for 3 hours, filter, collect the filter cake, and use Wash the filter cake with deionized water until the washing liquid is neutral, then transfer the washed filter cake to the oven, dry to constant weight at a temperature of 105 ℃, and then transfer the dried filter cake to the muffle furnace , At a temperature of 180℃, heat preservation and roasting for 1 hour to obtain acid-treated sepiolite;

[0047] Carbonized rice husk fiber:

[0048] The rice husk and water are mixed and soaked in a mass ratio of 1:10 for 3 hours, then the rice husk is taken out, frozen at -20°C for 1 hour, and then squeezed at a pressure of 10 MPa to obtain squeezed material, and then the squeezed material Transfer to a tube furnace, under argon protection...

example 2

[0053] Acid-treated sepiolite:

[0054] Add sepiolite and 5% hydrochloric acid in a mass ratio of 1:30 into the hydrothermal kettle, at a temperature of 170°C and a pressure of 2.2MPa, after the hydrothermal reaction for 4 hours, filter, collect the filter cake, and use Wash the filter cake with deionized water until the washing liquid is neutral, then transfer the washed filter cake to an oven, dry to constant weight at a temperature of 108 ℃, and then transfer the dried filter cake to a muffle furnace , At a temperature of 190℃, heat preservation and roasting for 1.5h to obtain acid-treated sepiolite;

[0055] Carbonized rice husk fiber:

[0056] The rice husk and water are mixed and soaked in a mass ratio of 1:15 for 4 hours, then the rice husk is taken out, frozen at a temperature of -30°C for 1.5 hours, and then squeezed at a pressure of 15 MPa to obtain a squeezed material, which is then pressed The material is transferred to the tube furnace, under the protection of argon, a...

example 3

[0061] Acid-treated sepiolite:

[0062] Add sepiolite and 10% hydrochloric acid in a mass ratio of 1:50 into the hydrothermal kettle, at a temperature of 180℃ and a pressure of 2.6MPa, after the hydrothermal reaction for 5 hours, filter, collect the filter cake, and use The filter cake is washed with deionized water until the washing liquid is neutral, then the washed filter cake is transferred to the oven, dried to constant weight at a temperature of 110 ℃, and then the dried filter cake is transferred to the muffle furnace , At a temperature of 200℃, heat preservation and roasting for 2 hours to obtain acid-treated sepiolite;

[0063] Carbonized rice husk fiber:

[0064] The rice husk and water are mixed and soaked in a mass ratio of 1:20 for 6 hours, then the rice husks are taken out, frozen at a temperature of -50°C for 2 hours, and then squeezed under a pressure of 20 MPa to obtain squeezed material, and then the squeezed material Transfer to a tube furnace, under argon protec...

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Abstract

The invention discloses a durable foam concrete and a preparation method thereof, belonging to the technical field of building materials. When preparing the product, first weigh the raw material, and divide the water in the raw material into three parts; mix cement, carbonized rice husk fiber, microcrystalline cellulose, Glauber's salt and 2 / 3 of water, and then knead with high viscosity for 45~ 60 minutes to get the kneading material; heat the kneading material to 55-75 °C, then add foaming agent, foam stabilizer and the remaining 1 / 3 of water, stir and mix, inject into the mold, stop foaming, curing, demoulding, Obtain the green body; put the green body and the silicate into the reaction kettle, seal it, pressurize to 0.3-0.5MPa, then raise the temperature to 85-95°C, heat the reaction, and discharge the material to obtain durable foam concrete. The product obtained in the present application has good mechanical properties, and the foam strength of the product also has good resistance to moisture and temperature.

Description

Technical field [0001] The invention discloses a durable foam concrete and a preparation method thereof, and belongs to the technical field of building materials. Background technique [0002] Foamed concrete is mainly composed of calcareous materials (cement, lime) and siliceous materials (quartz sand, granulated blast furnace slag, fly ash, shale, etc.), mixed with an appropriate amount of air-entraining agent, etc., after mixing, mixing and pouring , Vented, and cut porous ultra-light material. [0003] Cement is the main cementing material in foamed concrete and also the main source of strength for foamed concrete. It plays a role in cementing foamed concrete. Generally speaking, the higher the strength grade of the cement used, the higher the compressive strength of the prepared foam concrete. There are many types of cement for preparing foamed concrete. Ordinary Portland cement, Portland slag cement, Portland fly ash cement, etc. can all be used to make foamed concrete. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/10C04B28/04
CPCC04B28/04C04B2111/40C04B2201/50C04B2201/52C04B20/023C04B14/386C04B2103/50C04B2103/42C04B24/383C04B22/147C04B24/40C04B14/042C04B38/10Y02W30/91
Inventor 张国浩
Owner 江苏鸿宇天盛新材料科技有限公司
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