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A kind of self-compacting composite concrete and its preparation method, concrete wall brick

A concrete and self-compacting technology, applied in the field of building materials, can solve the problems of flood control, water ecological safety, threats to people's life and property safety, over-exploitation of natural riverbeds, loss of mineral resources, etc. Effect

Active Publication Date: 2021-06-04
CHINA CONSTR SEVENTH ENG DIVISION CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional self-compacting composite concrete usually uses natural sand and gravel as aggregates, resulting in over-exploitation of natural river beds, resulting in the loss of mineral resources and unstable river regimes, posing a serious threat to flood control, water ecological security, and the safety of people's lives and property

Method used

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  • A kind of self-compacting composite concrete and its preparation method, concrete wall brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A self-compacting composite concrete, made of A component, B component and C component; wherein A component is prepared from the following raw materials in parts by weight: 23 parts of Portland cement, 7 parts of thiophosphate cement ; B component is prepared from the following raw materials in parts by weight: 45 parts of slag, 14 parts of steel slag, 32 parts of iron tailings, 13 parts of bamboo charcoal fiber; C component is prepared from the following raw materials in parts by weight: cellulose 2.5 parts of ether, 5.5 parts of β-cyclodextrin, and 1.5 parts of water reducer; among them, thiophosphate cement is prepared from the following raw materials in parts by weight: 7 parts of magnesium oxide, 2.5 parts of dihydrogen phosphate, and 0.9 parts of magnesium sulfate , 0.3 parts of borax, 0.6 parts of iron tailings, and 0.4 parts of fly ash.

Embodiment 2

[0042] A self-compacting composite concrete, which is made of A component, B component and C component; wherein A component is prepared from the following raw materials in parts by weight: 20 parts of Portland cement, 6 parts of thiophosphate cement ; B component is prepared from the following raw materials in parts by weight: 40 parts of slag, 12 parts of steel slag, 30 parts of iron tailings, 12 parts of bamboo charcoal fiber; C component is prepared from the following raw materials in parts by weight: cellulose 2 parts of ether, 5 parts of β-cyclodextrin, and 1 part of water reducing agent; among them, thiophosphate cement is prepared from the following raw materials in parts by weight: 6 parts of magnesium oxide, 2 parts of dihydrogen phosphate, and 0.8 part of magnesium sulfate , 0.2 parts of borax, 0.5 parts of iron tailings, and 0.3 parts of fly ash.

Embodiment 3

[0044]A self-compacting composite concrete, which is made of A component, B component and C component; wherein A component is prepared from the following raw materials in parts by weight: 25 parts of Portland cement, 8 parts of thiophosphate cement ; B component is prepared from the following raw materials in parts by weight: 50 parts of slag, 15 parts of steel slag, 35 parts of iron tailings, 15 parts of bamboo charcoal fiber; C component is prepared from the following raw materials in parts by weight: cellulose 3 parts of ether, 6 parts of β-cyclodextrin, and 2 parts of water reducing agent; among them, thiophosphate cement is prepared from the following raw materials in parts by weight: 8 parts of magnesium oxide, 3 parts of dihydrogen phosphate, and 1.0 part of magnesium sulfate , 0.4 parts of borax, 0.8 parts of iron tailings, and 0.4 parts of fly ash.

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Abstract

The invention relates to the technical field of building materials, in particular to a self-compacting composite concrete, a preparation method thereof, and strong concrete. The self-compacting composite concrete uses Portland cement and thiophosphate cement as cement components, and the composition of thiophosphate cement is creatively selected; specific slag, steel slag and iron tailings sand are used as aggregate components ; Combined with cellulose ether and β-cyclodextrin as dispersant; the present invention divides cement component, aggregate component and auxiliary agent component into three kinds of components and packs respectively to form self-compacting composite concrete, in the concrete of the present invention In the process of forming the slurry and casting it into concrete bricks, it can be added and mixed in groups according to the characteristics of each component. Improve the fluidity, filling performance, anti-segregation performance and strength of the self-compacting composite concrete of the present invention.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a self-compacting composite concrete, a preparation method thereof, and concrete wall bricks. Background technique [0002] Self-compacting composite concrete means that relying on self-gravity without additional mechanical vibration force, it can have sufficient flow and deformation capacity, even if there are dense steel bars, it can fill the formwork space and form dense and uniform concrete. The preparation of self-compacting composite concrete generally reduces the yield stress of the concrete enough to be overcome by the shear force generated by its own weight through the selection and matching of admixtures, cementitious materials, coarse and fine aggregates, and careful mix ratio design, making the concrete fluidity At the same time, it has sufficient plastic viscosity to suspend the aggregate in the cement slurry without segregation and bleeding problems. It c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/34B28B23/02E04C1/00
CPCB28B23/02C04B28/34C04B2201/50E04C1/00C04B7/02C04B18/141C04B18/142C04B18/12C04B14/386C04B24/383C04B24/38C04B2103/302C04B9/00C04B18/08C04B22/08
Inventor 李铭潇
Owner CHINA CONSTR SEVENTH ENG DIVISION CORP LTD
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