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A self-made low-defect ultra-high-strength lightweight aggregate and its preparation method and application

A low-defect, aggregate technology, applied in the field of building materials, can solve the problems of poor coordination between aggregate and matrix, and achieve the effect of outstanding weight reduction, smooth and dense surface, and less internal defects

Active Publication Date: 2022-02-11
CHONGQING CONSTR ENG NEW BUILDING MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a self-made low-defect ultra-high-strength lightweight aggregate and its preparation method and application. 3~8 times the strength, it has obvious advantages in the preparation of lightweight high-strength concrete, breaking through the strength bottleneck of lightweight concrete represented by ceramsite concrete, and solving the problem of poor coordination between aggregate and matrix in concrete, feasible Good performance, broad application prospects

Method used

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  • A self-made low-defect ultra-high-strength lightweight aggregate and its preparation method and application
  • A self-made low-defect ultra-high-strength lightweight aggregate and its preparation method and application

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Embodiment 1

[0027]A self-made low-defect ultra-high-strength lightweight aggregate, including dry material, admixture and water. The dry material is made of the following raw materials in parts by weight: 700 parts of cement, 90 parts of fly ash, 210 parts of silica fume, hollow glass micro 90 parts of beads, 4 parts of polyvinyl alcohol fiber, 360 parts of quartz sand; the admixture is made of the following raw materials in parts by weight: 1.8 parts of active activator, 28 parts of water reducer, 0.06 part of defoamer; parts by weight of water for 135 servings.

Embodiment 2

[0029] A self-made low-defect ultra-high-strength lightweight aggregate, including dry materials, additives and water. The dry materials are made of the following raw materials in parts by weight: 770 parts of cement, 110 parts of fly ash, 230 parts of silica fume, hollow glass micro 135 parts of beads, 8 parts of polyvinyl alcohol fiber, 520 parts of quartz sand; the admixture is made of the following raw materials in parts by weight: 2.2 parts of active activator, 35 parts of water reducer, 0.08 part of defoamer; parts by weight of water for 155 copies.

Embodiment 3

[0031] A self-made low-defect ultra-high-strength lightweight aggregate, including dry material, admixture and water. The dry material is made of the following raw materials in parts by weight: 735 parts of cement, 100 parts of fly ash, 220 parts of silica fume, hollow glass micro 112.5 parts of beads, 6 parts of polyvinyl alcohol fiber, 440 parts of quartz sand; the admixture is made of the following raw materials in parts by weight: 2 parts of active activator, 31.5 parts of water reducer, 0.07 part of defoamer; parts by weight of water for 145 servings.

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Abstract

The invention relates to the technical field of building materials, in particular to a self-made low-defect ultra-high-strength lightweight aggregate, which is made of the following raw materials in parts by weight: 700-770 parts of cement, 90-110 parts of fly ash, and 210-230 parts of silica fume 90-135 parts of hollow glass beads, 4-8 parts of polyvinyl alcohol fiber, 360-520 parts of quartz sand, 1.8-2.2 parts of active activator, 28-35 parts of water reducing agent, 0.06-0.08 parts of defoamer , 135-155 parts of water; the self-made low-defect ultra-high-strength lightweight aggregate adopting the technical solution of the present invention has very obvious advantages when preparing lightweight high-strength concrete, and has broken through the strength bottleneck of lightweight concrete represented by ceramsite concrete , and at the same time solve the problem of poor coordination between aggregate and matrix in concrete, with good feasibility and broad application prospects.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a self-made low-defect ultra-high-strength lightweight aggregate and its preparation method and application. Background technique [0002] In the current rapid development of the construction industry, as building heights and structural spans continue to increase, concrete is required to have high strength and low density, while ordinary concrete is heavy and accounts for a large proportion of the total load of buildings. Significant. At present, the use of ceramsite ceramsite as lightweight aggregate is the main measure to reduce the density of concrete, and ceramsite concrete is economical and is the most widely used lightweight high-strength concrete; however, ceramsite lightweight high-strength concrete has certain limitations . On the one hand, the cylinder compressive strength of ceramsite is limited, usually 4~10MPa, and there are harmful pore defects inside t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B18/02C04B28/04
CPCC04B18/021C04B28/04C04B2201/20C04B2201/50C04B7/02C04B18/146C04B14/24C04B16/0641C04B14/06C04B22/064C04B14/28C04B22/147C04B2103/302C04B2103/50C04B18/08C04B22/10C04B14/48
Inventor 石从黎李城赵海红林宗浩陈敬向川高艳娜邓智成
Owner CHONGQING CONSTR ENG NEW BUILDING MATERIALS
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