High-activity granulated blast furnace slag and preparation method thereof

A slag micropowder, high activity technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of low activity, limited application field, single function, etc., to reduce the water-to-binder ratio, reduce Room temperature, rapid development effect

Active Publication Date: 2012-10-10
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of slag micropowder with high activity, wide application field and multi-functionality to improve the performance of concrete, aiming at the common problems of low activity, limited appl

Method used

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  • High-activity granulated blast furnace slag and preparation method thereof
  • High-activity granulated blast furnace slag and preparation method thereof
  • High-activity granulated blast furnace slag and preparation method thereof

Examples

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Effect test

Embodiment 1

[0019] Embodiment 1: A kind of highly active slag micropowder, which is obtained by co-grinding granulated blast furnace slag mixed with 10% solid synergist. The proportioning of the solid synergist is (percentage by weight): 15% of microsilica, 59% of natural ground gypsum, 20% of highly active calcium oxide, 1% of triethanolamine, and 5% of sodium silicate.

Embodiment 2

[0020] Example 2: A highly active slag micropowder, which is obtained by grinding together 20% solid synergist in granulated blast furnace slag. The ratio of the solid synergist is (percentage by weight): 50% ultrafine fly ash, 10% natural ground gypsum, 5% desulfurized gypsum, 30% highly active calcium oxide, 1% triisopropanolamine, silicic acid Potassium 2% and sodium silicate 2%.

Embodiment 3

[0021] Embodiment 3: A kind of highly active slag micropowder, which is obtained by co-grinding granulated blast furnace slag mixed with 30% solid synergist. The ratio of the solid synergist is (percentage by weight): microsilica fume 10%, superfine fly ash 17%, desulfurized gypsum 10.2%, highly active calcium oxide 60%, triethanolamine 1%, triisopropanolamine 1% % and potassium silicate 0.8%.

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Abstract

The invention discloses a high-activity granulated blast furnace slag and a preparation method thereof. In the process of grinding the granulated blast furnace slag, and a solid synergist is added in a ratio of 10-30%, through commonly grinding, the granulated blast furnace slag with a specific surface area of 350-600 m2/kg is obtained. The high-activity granulated blast furnace slag can be doped in concrete and cement products, because the granulated blast furnace slag has high activity and a certain water reducing property, while the water consumption is appropriately reduced, the early strength development of concrete and cement products can be promoted; meanwhile, concrete and cement products doped with the high-activity granulated blast furnace slag can achieve the design performance requirements thereof in advance under the condition of natural curing or non-autoclave normal-pressure steam curing; and the corrosion resistance and durability of concrete and cement products doped with the high-activity granulated blast furnace slag are also obviously improved. The main components of the solid synergist are as follows: active silicon, sulfate, high-activity calcium oxide, a small amount of organic matters, a moderate amount of other inorganic materials, so that the solid synergist belongs to a high-activity compound material.

Description

technical field [0001] The invention relates to a highly active slag micropowder in the field of building materials and a preparation method thereof. Background technique [0002] The use of cement and concrete products can improve the construction efficiency of construction projects. After the concrete is poured, if the climate is hot and the air is dry, and the maintenance is not carried out in time, the moisture in the concrete will evaporate too quickly, forming a dehydration phenomenon, which will make the cement particles that have formed a gel It cannot be fully hydrated, cannot be converted into stable crystals, and lacks sufficient cohesive force, so that flakes or powders will fall off on the concrete surface. In addition, when the concrete does not have sufficient strength, premature evaporation of water will also cause Large shrinkage deformation occurs, and shrinkage cracks appear, which affects the durability and integrity of concrete. Therefore, during the gr...

Claims

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Application Information

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IPC IPC(8): C04B18/14C04B7/21
CPCY02P40/10Y02W30/91
Inventor 苟德胜李斌斌
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