Water-resistant ardealite mould box and preparation method thereof

A phosphogypsum and molding technology, which is applied in the field of water-resistant phosphogypsum molding and its preparation, can solve the problems of high damage rate, water resistance, and low strength, and achieve the effects of increased strength, reduced overall cost, and enhanced compactness

Inactive Publication Date: 2016-11-23
马振义
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology addresses issues with current methods for constructing plaster castings due to their poor durability against moisture or degraded materials caused by prolong exposure during storage before use. Additionally, this new method avoides excessive drying times while still maintain its effectiveness when used outside. Overall, these technical improvements improve the quality control and efficiency of casting processes compared to existing techniques such as traditional forms.

Problems solved by technology

Technological Problem: The technical problem addressed by this patented technology relates to improving the quality of calcium sulfate (CaSO3/H) used during manufacturing processes such as casting or shaping. Water-resistance, weakness, yellowish gray hairs, etc., can lead to slowdownes when developing gypsum products due to their poor durability over time.

Method used

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  • Water-resistant ardealite mould box and preparation method thereof
  • Water-resistant ardealite mould box and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take 564 parts of phosphogypsum, 50 parts of sulphoaluminate cement, 50 parts of 42.5 cement, 320 parts of slag S95, 3 parts of polycarboxylate superplasticizer, 8 parts of alum, and 5 parts of glass fiber, and mix and stir the above weight components for 3 -5min, prepare an appropriate amount of water, pour the mixed components into the water and stir for 30 seconds, pour them into the mold to form, rest for 10 minutes, then release the mold, then cover it with a plastic film and maintain it for 3 days, the moldability of the obtained water-resistant phosphogypsum is : Initial setting 3min, 3-day dry flexural strength: 3.5MPa, 3-day dry compressive strength: 12MPa, 3-day softening coefficient: 0.88.

Embodiment 2

[0026] Take 585 parts of phosphogypsum, 60 parts of sulphoaluminate cement, 60 parts of 42.5 cement, 200 parts of slag S95, 1 part of polycarboxylate superplasticizer, 10 parts of alum, and 4 parts of glass fiber, and mix and stir the above weight components for 3 -5min, prepare an appropriate amount of water, pour the mixed components into the water and stir for 30 seconds, pour them into the mold to form, rest for 10 minutes, then release the mold, then cover it with a plastic film and maintain it for 3 days, the moldability of the obtained water-resistant phosphogypsum is : Initial setting 4min, 3-day dry flexural strength: 3.3MPa, 3-day dry compressive strength: 11.8MPa, 3-day softening coefficient: 0.78.

Embodiment 3

[0028] Take 634 parts of phosphogypsum, 50 parts of sulfoaluminate cement, 70 parts of 42.5 cement, 230 parts of slag S95, 3 parts of polycarboxylate superplasticizer, 10 parts of alum, and 3 parts of glass fiber, and mix and stir the above weight components for 3 -5min, prepare an appropriate amount of water, pour the mixed components into the water and stir for 30 seconds, pour them into the mold to form, rest for 10 minutes, then release the mold, then cover it with a plastic film and maintain it for 3 days, the moldability of the obtained water-resistant phosphogypsum is : Initial setting 4min, 3-day dry flexural strength: 3.7MPa, 3-day dry compressive strength: 13.6MPa, 3-day softening coefficient: 0.85.

[0029] The invention adopts the waste residue phosphogypsum directly discharged by phosphorus chemical enterprises as the main cementitious material, conforms to the active mineral material of volcanic ash, and adds some activators, and through chemical reaction, changes...

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Abstract

The invention discloses a water-resistant ardealite mould box and a preparation method thereof. The water-resistant ardealite mould box is prepared from, by weight, 550-650 parts of ardealite, 50-100 parts of cement, 50-100 parts of sulphate aluminum cement, 1-8 parts of a water reducer, 6-15 parts of an activator, 3-10 parts of glass fibers and 300-400 parts of pozzolanic activity mineral materials. The preparation method includes the steps that the components are poured into a stirring vessel according to the weight proportion and mixed and stirred for 3-5 min, then a proper amount of water is prepared, the mixed components are poured into the water and stirred for 30 s, the mixture is poured into a mould and formed, demoulding is carried out after 10 min of standing, an obtained mould box is covered with a plastic film, and the water-resistant ardealite mould box can be obtained after 3 days of wet curing. According to the water-resistant ardealite mould box and the preparation method thereof, the problems that plaster mould boxes do not have water resistance, and the strength of plaster mould boxes and surrounding concrete cement is low are solved, cost is lowered, and the development of the plaster mould box industry is promoted.

Description

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Claims

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Application Information

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Owner 马振义
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