High-strength tuff-based foamed cement thermal-insulation test block and preparation method thereof

A technology of foamed cement and tuff, which is applied in the manufacture of tools, ceramic products, and other household appliances. It can solve the problems of complex process, high energy consumption, and low compressive strength, and achieve simple preparation and operation, lower thermal conductivity, and The effect of low equipment requirements

Active Publication Date: 2019-07-26
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the process of preparing lightweight high-strength foam materials with tuff as the main raw material is relatively complicated, involving multi-stage high-temperature heating steps such as preheating stage, foaming stage, cooling annealing stage, etc., which not only consumes high energy, but also easily produces polluting gas
At the same time, the maximum amount of tuff added in the preparation process is small, and the proportion of other ingredients is high, so the density of the prepared specimen is high, but the compressive strength is low

Method used

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  • High-strength tuff-based foamed cement thermal-insulation test block and preparation method thereof
  • High-strength tuff-based foamed cement thermal-insulation test block and preparation method thereof
  • High-strength tuff-based foamed cement thermal-insulation test block and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 The effect of the dosage of sodium hydroxide on the compressive strength and thermal conductivity of the tuff-based foam cement insulation test block ore

[0030] Preparation of tuff-based foamed cement insulation test block: the high-strength tuff-based foamed cement insulation test block includes 100 parts by weight of tuff powder, 2.0 parts, 2.2 parts, 2.4 parts, 2.5 parts, 5 parts, 7.5 parts, 7.6 parts, 7.8 parts, 8 parts, 2 parts of desulfurized gypsum, 5 parts of fly ash, 5 parts of silica fume, 8 parts of lime mud fiber, and 2 parts of foaming agent. Wherein, the foaming agent is tea saponin foaming agent. The preparation method of the high-strength tuff-based foamed cement insulation test block comprises the following steps: 1) weighing sodium hydroxide and tuff powder, mixing, adding water and stirring to make them fully dissolved, and drying to obtain alkali-activated tuff; 2) weighing alkali Activated tuff and desulfurized gypsum are mixed and full...

Embodiment 2

[0036] Example 2 Influence of the dosage of desulfurized gypsum on the compressive strength and thermal conductivity of the tuff-based foam cement insulation test block ore

[0037] Preparation of tuff-based foamed cement insulation test block: The high-strength tuff-based foamed cement insulation test block includes 100 parts by weight of tuff powder, 7.5 parts of sodium hydroxide, 1.5 parts, 1.7 parts, 1.9 parts, and 2 parts of desulfurized gypsum. Parts, 3.5 parts, 5 parts, 5.1 parts, 5.3 parts, 5.5 parts, 7.5 parts of fly ash, 7.5 parts of silica fume, 9 parts of white mud fiber, and 3.5 parts of foaming agent. Wherein, the foaming agent is tea saponin foaming agent. The preparation method of the high-strength tuff-based foamed cement insulation test block comprises the following steps: 1) weighing sodium hydroxide and tuff powder, mixing, adding water and stirring to make them fully dissolved, and drying to obtain alkali-activated tuff; 2) weighing alkali Activated tuff ...

Embodiment 3

[0044] Influence of the dosage of fly ash, silica fume and lime mud fiber on the compressive strength and thermal conductivity of tuff-based foam cement insulation test block

[0045] Preparation of tuff-based foamed cement insulation test block: the high-strength tuff-based foamed cement insulation test block includes 100 parts by weight of tuff powder, 7.5 parts of sodium hydroxide, 5 parts of desulfurized gypsum, 4.6 parts of fly ash, 4.8 parts of parts, 5 parts, 7.5 parts, 10 parts, 10.2 parts, 10.4 parts, silica fume 4.6 parts, 4.8 parts, 5 parts, 7.5 parts, 10 parts, 10.2 parts, 10.4 parts, white clay fiber 7.6 parts, 7.8 parts, 8 parts Parts, 9 parts, 10 parts, 10.2 parts, 10.4 parts, and 5 parts of foaming agent. Wherein, the foaming agent is tea saponin foaming agent. The preparation method of the high-strength tuff-based foamed cement insulation test block comprises the following steps: 1) weighing sodium hydroxide and tuff powder, mixing, adding water and stirring ...

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Abstract

The invention discloses tuff slurry and a preparation method thereof. The tuff slurry comprises tuff powder, sodium hydroxide, fly ash, silica fume and white mud fibers. The invention also discloses ahigh-strength tuff-based foamed cement thermal-insulation test block and a preparation method thereof. The high-strength tuff-based foamed cement thermal-insulation test block has simple preparationoperation process and low equipment requirement, and can be directly commercialized and popularized. The application way of the tuff is expanded, the strength of the prepared tuff-based foamed cementthermal-insulation material can reach 13.49 MPa in 28 days, and the thermal conductivity coefficient is 0.0245 W/(m-K). The invention provides a new idea for preparing the high-strength tuff-based foamed cement thermal-insulation test block from tuff.

Description

technical field [0001] The invention belongs to the field of low-value mineral resource processing, and in particular relates to a high-strength tuff-based foamed cement heat preservation test block and a preparation method thereof. Background technique [0002] At present, the energy consumption of residential buildings in my country accounts for about one-third of the total energy consumption in the country, while heating and air conditioning energy consumption accounts for 20%. The promotion of energy-saving building materials can not only save energy, alleviate the serious situation of energy in our country, but also improve the situation of air pollution. At present, my country has successively issued a series of national standards and guiding opinions to standardize energy conservation and emission reduction and promote energy-saving renovation of buildings. Thermal insulation of buildings and various equipment is an important aspect of energy conservation. The resea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B38/10B28B1/50C04B111/40
CPCB28B1/50C04B28/144C04B38/10C04B2111/40C04B2201/32C04B2201/50C04B14/14C04B22/062C04B18/08C04B18/146C04B14/46
Inventor 黄涛宋东平刘万辉刘龙飞陶骏骏周璐璐吴建勋张树文
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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