Preparation method of high-performance concrete mineral admixture

A high-performance concrete and mineral technology, applied in the field of building materials, can solve the problems of strong water fixation rate and low strength, and achieve the effects of easy operation, low production cost and simple process

Inactive Publication Date: 2017-04-26
福建省建筑材料工业科学研究所
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage is that the incorporation of slag leads to a strong early water solidification rate, which makes the concrete dry shrinkage in the later stage. The greater the finenes

Method used

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  • Preparation method of high-performance concrete mineral admixture

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preparation example Construction

[0020] A kind of preparation method of high-performance concrete mineral admixture of the present invention, this preparation method comprises following specific operation steps:

[0021] (1), raw material preparation:

[0022] Take the converter steel slag and make it smaller than 5mm in particle size through hot-steaming process to obtain hot-steamed converter steel slag, and then grind the hot-steamed converter steel slag to a fineness of 300-400m 2 / kg Blaine specific surface area of ​​the powder, heat stewing furnace to turn steel slag powder, standby;

[0023] Take granulated blast furnace slag and grind it to a fineness of 400-500m 2 / kg Blaine specific surface area powder, to get granulated blast furnace slag powder, standby;

[0024] Take limestone and grind it into powder to get limestone powder, set aside;

[0025] (2) Preparation of admixture:

[0026] The high-performance concrete mineral admixture is obtained by mixing the following raw materials evenly in pa...

Embodiment 1

[0030] Take the converter steel slag and make it smaller than 5mm in particle size through hot-steaming process to get hot-steamed converter steel slag, and then grind the hot-steamed converter steel slag to a fineness of 400m 2 / kg Blaine’s specific surface area powder, heat and stew the furnace to turn into steel slag powder, and set aside; take the granulated blast furnace slag and grind it into a fineness of 450m 2 / kg Blaine specific surface area powder, get granulated blast furnace slag powder, for subsequent use; get limestone and grind it into powder, get limestone powder, for subsequent use; Mix 100kg of powder evenly to obtain the high-performance concrete mineral admixture of the present invention.

Embodiment 2

[0032] Take the converter steel slag and make it smaller than 5mm in particle size through hot-steaming process to get hot-steamed converter steel slag, and then grind the hot-steamed converter steel slag to a fineness of 300m 2 / kg Blaine’s specific surface area powder, heat and stew the furnace to turn into steel slag powder, and set aside; take the granulated blast furnace slag and grind it into a fineness of 500m 2 / kg Blaine specific surface area powder to get granulated blast furnace slag powder for subsequent use; get 500 kg of hot stewed furnace steel slag powder and 500 kg of granulated blast furnace slag powder and mix evenly to obtain high-performance concrete mineral admixture of the present invention.

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Abstract

The invention provides a preparation method of a high-performance concrete mineral admixture. The method comprises the following steps: taking converter slag, processing the converter slag through a hot braising technology to make the granularity less than 5 mm in order to obtain hot-braised converter slag, and grinding the hot-braised converter slag to form powder with the Blaine specific surface area of 300-400 m<2>/kg in order to obtain hot-braised converter slag powder; taking granulated blast furnace slag powder, and grinding the granulated blast furnace slag powder to form powder with the Blaine specific surface area of 400-500 m<2>/kg in order to obtain granulated blast furnace slag powder; taking and grinding limestone to form powder in order to obtain limestone powder; and uniformly mixing 1-5 parts by weight of the hot-braised converter slag powder, 4-10 parts by weight of the granulated blast furnace slag powder and 0-1.6 parts by weight of the limestone powder to obtain the high-performance concrete mineral admixture. The method has the advantages of reuse of industrial wastes, resource saving, reduction of the making cost of concrete, simple process, simple operation, easiness in operation, and easiness in wide application.

Description

[0001] 【Technical field】 [0002] The invention belongs to the field of building materials, and in particular relates to a preparation method of a high-performance concrete mineral admixture. [0003] 【Background technique】 [0004] In the field of building materials, concrete mineral admixtures refer to active or inert materials mixed into concrete to improve concrete performance, reduce cement consumption and reduce hydration heat. [0005] Commonly used concrete mineral admixtures include fly ash, ground slag and other materials, which are indispensable and important components in contemporary concrete engineering. The admixture in concrete not only plays the role of dispersing and filling, but also improves the construction performance of concrete. What is more important is that the admixture also participates in the hydration of cement, which has a great influence on the strength development, compactness and impermeability of concrete. great contribution. However, the di...

Claims

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Application Information

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IPC IPC(8): C04B20/04C04B20/02C04B18/14C04B14/28
CPCC04B20/026C04B20/04C04B40/0039C04B18/142C04B18/141C04B14/28Y02W30/91
Inventor 邱榕林王子为沈适赖加斌
Owner 福建省建筑材料工业科学研究所
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