Activated waste slay composite powder and its application in cement, concrete and bake free brick

A composite powder, non-burning brick technology, applied in cement production, building components, construction, etc., can solve problems such as troublesome costs, and achieve the effect of low cost and high effect

Inactive Publication Date: 2004-05-05
吴发辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost, quality and other issues that have...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Activated waste slag composite powder is composed of the following ingredients in proportion by weight:

[0067] Acidified zeolite rock 10-20%, non-ferrous metal salt waste slag, lead slag or copper slag 10-20%;

[0068] Carbonate waste residue stone powder 0-5%, phosphate waste residue phosphogypsum 0-5%, lime residue 0-10%,

[0069] Fly ash base material 40-60%.

Embodiment 2

[0071] The cement using the activated waste slag composite powder as admixture in Example 1 has a composition by weight: the activated waste slag composite powder accounts for 40-60%, and the cement clinker accounts for 40-60%.

[0072] Table 1 shows the physical inspection report of cement with different materials and different ratios of activated waste slag composite powder.

[0073] No. 1, because the acidified zeolite rock was not mixed with early-strength excitation materials, its 3-day strength was low, and the 3-day strength did not reach 425 # standard.

[0074] No. 2, all mixed with acidified zeolite rock as early strength excitation material, so stable production of 425 # cement. The compressive strength is 24Mpa in 3 days, 47Mpa in 28 days, the fineness is 6-8%, the stability is qualified, the setting time is 2-6 hours, the sulfur trioxide is 2.9%, the loss on ignition is 3.1%, and the cement performance indicators reach the national standard. Since the composite...

Embodiment 3

[0076] The concrete with the activated waste slag composite powder as the admixture in Example 1 is composed by weight ratio: 20-40% of the activated waste slag composite powder and 60-80% of cement are used to prepare waste slag cement, and the waste slag cement is mixed with sand, stone and water Formulated in conventional proportions.

[0077] As shown in Table 2, the present invention uses 25% waste slag composite powder to replace the same amount of cement and 75% cement to prepare C30 early-strength concrete, which saves 12 yuan compared with ordinary concrete prepared with single cement. Compared with early-strength concrete prepared with early-strength agent, it saves 43 yuan. Taking into account the improvement of concrete performance, avoiding common problems, wear and tear of machinery and tools, etc. plus the direct cost saved, it can save about 50 yuan per cubic meter of concrete. Also, consider saving templates, speeding up construction, reducing machinery and l...

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Abstract

An activated composite waste dregs powder used for cement, concrete and non-calcine brick is prepared from acidified zeolite powder, lead or copper dregs, carbonate stone powder, phosphate dregs (ardealite), lime dregs and powdered coal ash as basic materials. Its advantages are high property and low cost.

Description

Technical field: [0001] The present invention relates to building materials. More specifically, it is a composite powder that can be used as a cement admixture and as an admixture for concrete and cement products and its application. Background technique: [0002] In traditional technology, to produce 325# cement, the consumption of the admixture as industrial waste can only be between 20-30%, and to produce 425# cement, the consumption of its admixture can not exceed 20%. If the amount of waste slag is increased beyond the standard, it will inevitably lead to a substantial decrease in the strength of the cement, and the performance of the cement will also undergo significant changes, affecting normal use. [0003] In current concrete production, generally only 10% dry-discharged fly ash can be used as an admixture, and if the amount exceeds 10%, the concrete grade will drop accordingly. In recent years, in order to ensure the performance of concrete, chemical admixtures h...

Claims

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Application Information

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IPC IPC(8): C04B7/02C04B7/24C04B28/02E04C1/00
CPCY02P40/10
Inventor 吴发辉吴卫东吴晓飞
Owner 吴发辉
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