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A kind of cemented artificial sandstone material and its preparation method

An artificial sand and gelling technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of lack of adaptability and achieve the effect of loose source requirements and simple treatment

Active Publication Date: 2018-01-19
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lack of adaptability to dam sites that lack materials such as natural riverbed sand, gravel, and pebbles, or require high strength in material configuration

Method used

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  • A kind of cemented artificial sandstone material and its preparation method
  • A kind of cemented artificial sandstone material and its preparation method
  • A kind of cemented artificial sandstone material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] A dam project is built with cemented artificial sand and gravel materials, and the preparation of the dam building materials has the following steps:

[0051] 1. Carry out exploration and sampling test on the material source of the project site;

[0052] 2. According to the exploration and test results, determine the aggregate crushing process of gelled artificial sandstone, which is crushed by a jaw crusher. Generally, one or two jaw crushers can be used for the aggregate crushing process of gelled artificial sand. The crushed aggregate does not need to be sieved, and only the particles with a particle size larger than 150mm are removed by sieving once.

[0053] 3. According to the aggregate production process determined in step 2, the project site starts to produce artificial sand and gravel aggregates.

[0054] In the space of the stockyard (that is, the site where the produced aggregates are stacked), more than 10 positions are evenly selected in the prepared aggr...

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Abstract

The invention provides a cementing artificial sand stone material, which is a novel material between roller compacted concrete and a common cementing sand gravel material. According to the present invention, compared with the common cementing sand gravel material aggregate processing using natural river bed sand and gravel, the aggregate processing of the present invention has the following characteristics that the treatment is complex, the crushing is required, the mud content is low, and the sand ration is adjusted according to the principles of good workability and excellent economy; compared with the roller compacted concrete material aggregate processing, the aggregate processing of the present invention has the following characteristics that the complex aggregate gradation design does not exist, the aggregate is obtained by carrying out simple crushing processing on the dig material and adjusting the sand ratio, and according to the aggregate gradation fluctuation, the matching ratio design is performed through the principle of the double gradation double strength regulation or the single gradation single strength regulation; and the obtained dam building material has characteristics of sufficient strength, good penetration resistance and good freezing resistance, and the process of the present invention is substantially simplified compared with the roller compacted concrete process so as to reduce the cost.

Description

technical field [0001] The invention belongs to the technical field of cemented sand and gravel dams, in particular to a novel dam-building material between roller compacted concrete and conventional cemented sand and gravels. The invention also provides a preparation method of the gelled artificial sandstone material. Background technique [0002] In order to simplify construction, speed up construction and reduce costs, people have proposed the use of roller compacted concrete and cemented sand and gravel dams on the basis of traditional gravity dams and rockfill dams. [0003] Roller compacted concrete has strict requirements on the stockyard and aggregate preparation. The stone mined from the stockyard needs to go through complex aggregate crushing and screening, and the aggregate grading and mix ratio are strictly controlled. In addition, the content of cementitious materials in unilateral (that is, unit volume, generally refers to: 1 cubic meter) RCC is relatively lar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B18/16
CPCY02W30/91
Inventor 贾金生刘宁马锋玲郑璀莹翟洁汪洋冯炜杨会臣杜振坤徐耀
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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