Mineral additive

A mineral and weight ratio technology, applied in the field of mineral admixtures, can solve the problems of difficult construction and low early activity, achieve high early strength, improve early strength performance, and avoid environmental pollution

Inactive Publication Date: 2017-06-16
PANZHIHUA BOTE BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, although the existing mineral admixtures such as blast furnace slag, fly ash, metakaolin, coal gangue, etc. can improve the durability of concrete, their early activity is low, and it is difficult to meet the requirements of early strength concrete prefabricated products. construction

Method used

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  • Mineral additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1 Preparation of mineral admixture of the present invention

[0014] Take 250kg of fly ash, 705kg of blast furnace slag, 5kg of dihydroxyethylethylenediamine, 10kg of sodium sulfate, and 30kg of calcium oxide, and mix them evenly to obtain the mineral admixture.

Embodiment 2

[0015] Embodiment 2 Preparation of mineral admixture of the present invention

[0016] Take 440kg of fly ash, 505kg of blast furnace slag, 15kg of dihydroxyethylethylenediamine, 30kg of sodium sulfate, and 10kg of calcium oxide, and mix them evenly to obtain the mineral admixture.

Embodiment 3

[0017] Embodiment 3 Preparation of mineral admixture of the present invention

[0018] Take 350kg of fly ash, 600kg of blast furnace slag, 10kg of dihydroxyethylethylenediamine, 20kg of sodium sulfate, and 20kg of calcium oxide, and mix them evenly to obtain a mineral admixture.

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Abstract

The invention relates to a mineral additive, and belongs to the technical field of concrete additive. The early strength of the mineral additive is higher. The mineral additive is composed of, by weight, 25 to 45 parts of fly ash, 50 to 70 parts of blast furnace slag, 0.5 to 1.5 parts of dihydroxyethyl ethylene diamine, 1 to 3 parts of sodium sulfate, and 1 to 3 parts of calcium oxide. The mineral additive is prepared via taking fly ash and blast furnace slag as main raw materials, so that waste is changed into valuables, environment pollution is avoided, the mineral additive can be used for replacing 15 to 25% of cement at an equal amount, and cost is reduced. Concrete prepared via adding of the mineral additive is high in early strength, so that early strength of concrete is improved.

Description

technical field [0001] The invention relates to a mineral admixture and belongs to the technical field of concrete admixtures. Background technique [0002] Concrete admixtures are used to improve concrete performance, save water, adjust the strength level of concrete, and add natural or artificial powdery minerals that can improve concrete performance during concrete mixing. Admixtures can be divided into active admixtures and inactive admixtures. The active mineral admixture itself does not harden or the hardening speed is very slow, but it can react with cement hydration to generate calcium oxide to form hydration products with gelling ability, such as fly ash, granulated blast furnace slag powder, zeolite powder, Silica fume, etc. Inactive mineral admixtures basically do not react with cement components, such as limestone, ground quartz sand and other materials. [0003] At present, although the existing mineral admixtures such as blast furnace slag, fly ash, metakaoli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B22/14C04B22/06C04B18/08C04B18/14
CPCY02W30/91
Inventor 陆加越张建纲
Owner PANZHIHUA BOTE BUILDING MATERIALS
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