Composite flyash-gypsum block (brick) and its production process

A composite block and fly ash technology, applied in the field of building materials, can solve the problems of unheard of, low softening coefficient, waste of gypsum resources, etc., and achieve the effects of improving environmental pollution, simple production process, and saving gypsum resources

Inactive Publication Date: 2002-01-23
季东波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of this technology are: (1) a large amount of gypsum needs to be used as raw material, the production cost is high, gypsum resources are wasted, and fly ash or industrial slag which is discarded and pollutes the environment cannot be used more; (2) this block Due to the low softening coefficient (less than 0.6), it cannot be used in a humid environment. If it is necessary...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1. a kind of fly ash gypsum composite block brick is characterized in that its used raw material and formula are (calculated by weight percentage):

[0022] (1) Construction gypsum powder 40%

[0023] (2) Fly ash 32%

[0024] (3) Lime 13%

[0025] (4) Perlite 13%

[0026] (5) Gypsum water reducer 1%

[0027] (6) Fly ash active activator 1%

Embodiment 2

[0028] Embodiment 2 fly ash gypsum composite block brick is characterized in that its raw materials used and formula are (calculated by weight percentage):

[0029] (1) Construction gypsum powder 35%

[0030] (2) Fly ash 34.1%

[0031] (3) Lime 14%

[0032] (4) Perlite 15%

[0033] (5) Gypsum water reducer 0.8%

[0034] (6) Fly ash active activator 1.1%

Embodiment 3

[0035] Embodiment 3 fly ash gypsum composite block brick is characterized in that its raw materials used and formula are (calculated by weight percentage):

[0036] (1) Construction gypsum powder 38%

[0037] (2) Fly ash 33%

[0038] (3) Quicklime 13%

[0039] (4) Perlite 13%

[0040] (5) Gypsum water reducer 1%

[0041] (6) Fly ash active activator 1%

[0042] (7) Glass fiber 1%

[0043] The fly ash active activator is NaCl, KOH, NaOH, Na 2 CO 3 , CaCl 2 、Na 2 SO 4 Any one or a combination of several of them can be adjusted appropriately.

[0044] The production technology of the fly ash gypsum composite building block (or brick) of the present invention is specifically such:

[0045] (1) Add quicklime with water to make slaked lime, and then grind it to 160 mesh;

[0046] (2) After mixing the finely ground lime and fly ash in proportion, add the aqueous solution with gypsum water reducer and fly ash active activator dissolved in advance, and stir evenly;

[0047...

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Abstract

The composite flyash-gypsum block (brick) is produced with building gypsum powder 30-40 wt%, flyash 30-40 wt%, lime 10-14 wt%, perlite 13-18 wt%, gypsum water reducing agent 0.6-1.4 wt% and flyash activator 0.8-1.2 wt% and through the following processes: mixing the mixture of ground lime and flyash with water solution of gypsum water reducing agent and flyash activator; adding gypsum powder and alkali resisting glass fiber or produce slurry through stirring; molding the slurry inside mold through vibration to produce block or brick; demolding and curing to obtain product with water content less than 5 %. The composite block or brick of the present invention has high softening coefficient, simple production process and low cost and may be used in moist environment.

Description

(1) Technical field [0001] The invention relates to the field of building materials, in particular to a fly ash gypsum composite building block (brick) and a production method thereof. (2) Background technology [0002] At present, there are many domestic manufacturers producing gypsum blocks, and the production methods are basically the same, that is, gypsum powder is used as the main raw material, together with fly ash and other fillers and foaming agents, it is crushed, batched, stirred, molded, formed, and demoulded. , maintenance and other processes (as described in the "Hollow Gypsum Blocks" and "Gypsum Blocks" sections in "New Wall Materials Handbook"). The main disadvantages of this technology are: (1) a large amount of gypsum needs to be used as raw material, the production cost is high, gypsum resources are wasted, and fly ash or industrial slag which is discarded and pollutes the environment cannot be used more; (2) this block Due to the low softening coefficient...

Claims

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Application Information

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IPC IPC(8): C04B14/18C04B14/44C04B18/08C04B28/14
CPCY02W30/91
Inventor 季东波
Owner 季东波
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