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Long pumping distance machine-made sand concrete

A machine-made sand and concrete technology, which is applied in the field of concrete, can solve the problems of wasting resources, increasing project costs, and limiting the application range of mountain sand concrete.

Active Publication Date: 2008-04-23
GUIZHOU BRIDGE CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This difference greatly limits the scope of application of mountain sand concrete, especially in the construction of bridges and other buildings over 180 meters high. Pouring concrete increases the cost of the project and wastes its own resources

Method used

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  • Long pumping distance machine-made sand concrete
  • Long pumping distance machine-made sand concrete
  • Long pumping distance machine-made sand concrete

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0196] Embodiment 1 of the present invention: by weight, adopt Guizhou Shuicheng Cement Plant Wumengshan P.O42.5 cement 400, machine-made sand 800 produced by Guanling Jiwo field stockyard, the requirement of machine-made sand is, fineness modulus 3.05, dust content less than 7%, 5-16mm particle size crushed stone 310, 16-25mm particle size crushed stone 720, tap water 160, Guizhou Anshun Power Plant Class I fly ash 75, Guangdong Zhanjiang FDN-5 high-efficiency water reducer 18. The water-reducing rate of the water-reducing agent can reach 20-30%. Mix and stir various raw materials to prepare concrete. When in use, concrete can be pumped to a height of more than 200 meters at a time.

Embodiment 2

[0197] Embodiment 2 of the present invention: by weight, adopt Guizhou Shuicheng Cement Plant Wumengshan P.O42.5 cement 425, machine-made sand 780, 5-16mm grain size crushed stone 300, 16 of Guanling Jiwo field stockyard production -25mm particle size crushed stone 700, tap water 155, Guizhou Anshun Power Plant Class I fly ash 80, Guangdong Zhanjiang FDN-5 type high-efficiency water reducer 24, mix and stir various raw materials to prepare concrete.

Embodiment 3

[0198] Embodiment 3 of the present invention: By weight, adopt P.O42.5 cement 407, machine-made sand 791, 5-16mm particle diameter crushed stone 307, 16-25mm particle diameter crushed stone 714, tap water 157.6, I grade fly ash 77.6, superplasticizer 19.4, mix and stir various raw materials to prepare concrete.

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Abstract

This invention relates to a high delivery lift type machine-finished sands concrete. The raw materials are (by weight ratio): cement 400-425, machine-finished sands 780-800, broken stone (grain size=5-16mm)300-310, broken stone (16-25mm) 700-720, water 155-160, coal ash 75-80, water reducing agent 18-24. This inventive concrete has better working properties, its delivery lift can be up to 200m. It can make the equipment being at normal operation.

Description

technical field [0001] The invention relates to a high-pump machine-made sand concrete, which belongs to the technical field of concrete. Background technique [0002] With the rapid development of economic construction, my country's infrastructure construction is in the ascendant, and the consumption of building materials is huge. However, due to the uneven distribution of sand resources in my country, natural sand resources are becoming increasingly depleted, and due to excessive exploitation of natural sand, the ecological environment has begun to be affected and destroyed, especially in some areas where natural sand resources are not abundant, such as Yunnan, Sichuan, Guizhou, etc. Province, coupled with inconvenient transportation and high transportation costs, the contradiction of shortage of sand resources has become increasingly prominent. On the other hand, my country's Guizhou and other regions are rich in ore reserves, and the stone powder and stone chips formed d...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B14/06C04B18/08C04B14/04
CPCY02W30/91
Inventor 阮有力钟荣炼王宇张熙平黄盛
Owner GUIZHOU BRIDGE CONSTR GROUP
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