Steel-slag concrete

A technology of steel slag concrete and steel slag stone, which is applied in the field of concrete construction and steel slag concrete construction, can solve the problems of weak surface strength of steel slag, large ratio of raw materials, insufficient structural strength, etc., and achieve good economic benefits, reduce pollution, and save costs. Effect

Active Publication Date: 2016-11-23
CHINA RAILWAY NO 2 ENG GRP CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiencies in the prior art, such as insufficient steel slag concrete structure strength, weak steel slag surface strength, large raw material ratio restrictions, easy compatibility, poor fluidity, etc., and provide a brand new steel slag concrete

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Embodiment 1-10

[0042] According to the technical requirements of Class II in JGJ52-2006 "Sand and Stone Quality and Inspection Method Standards for Ordinary Concrete", the raw materials are preliminarily screened, and the impurities in steel slag ore and iron ore tailings are removed. Weigh the raw materials according to the ratio of parts by volume in the table below to make 1m 3 Steel slag concrete, the later maintenance of steel slag concrete is the same as that of ordinary concrete.

[0043] Table 3 Raw material distribution ratio of steel slag concrete

[0044] Number \ Raw material

Steel slag

mineral powder

iron tailings

cement

water

fly ash

Superplasticizer*

Example 1

1500

120

1400

250

200

40

10

Example 2

1100

80

1100

220

180

20

12

Example 3

1200

110

1300

240

150

50

9

Example 4

1400

90

1000

225

160

10

10

Example 5

1300

100

...

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Abstract

The invention discloses steel-slag concrete. The steel-slag concrete is prepared from raw material in parts by volume as follows: 1,100-1,500 parts of steel slag stone, 80-120 parts of mineral powder, 1,000-1,400 parts of iron tailings sand, 200-250 parts of cement, 150-190 parts of water, 10-50 parts of fly ash and 1-12 parts of a water reducing agent. The steel-slag concrete prepared from steel slag instead of stone as coarse aggregate can have counterweight and protection functions, various indexes of the concrete all meet standard requirements of common concrete, and the anti-permeability, the wear resistance and the like of the concrete are even better than those of the common concrete. With massive use of the steel slag, resources such as yellow sand, stone, iron ore and the like are protected, environmental pollution caused by steel slag stacking is reduced, and the ecology is protected.

Description

technical field [0001] The invention relates to a concrete construction technology, in particular to a steel slag concrete construction technology, and belongs to the technical field of building construction. Background technique [0002] In recent years, super high-rise buildings have entered a stage of rapid development, and high-rise buildings have sprung up all over the world. In order to ensure the construction schedule requirements, super high-rise buildings often adopt the "reverse construction method" in the foundation treatment to save process time on key lines. Steel slag concrete is a kind of special heavy-duty concrete produced under this environment. This kind of concrete is used to increase the foundation counterweight and replace the foundation construction uplift piles to achieve the purpose of saving construction time. [0003] Steel slag is the waste slag produced in the steelmaking process, and its quantity is about 15% to 20% of the steel output. In 201...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/14C04B18/12C04B18/08
CPCY02W30/91
Inventor 姚琪王晓中孙旭军周富良
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD
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