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Gelled sand gravel and preparation method thereof

A technology for cementing sand and gravel and sand and gravel, which is applied in the field of cemented sand and gravel and its preparation, and achieves the effects of excellent impermeability and freezing resistance, good structure tightness and good arrangement tightness.

Pending Publication Date: 2021-02-02
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention proposes a gelled sandy gravel and its preparation method. The prepared gelled sandy gravel has the advantages of high mechanical strength, impermeability and high frost resistance. The present invention adds magnetic powder , so that the structural density can be kept stable without being damaged, it has self-healing ability and high temperature resistance, and the gelled sand and gravel added with shrimp shell powder can effectively prevent the deformation of the gelled sand and gravel dam structure caused by high temperature

Method used

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  • Gelled sand gravel and preparation method thereof
  • Gelled sand gravel and preparation method thereof
  • Gelled sand gravel and preparation method thereof

Examples

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Effect test

Embodiment 1

[0032] according to figure 1 As shown, the present embodiment proposes a preparation method of cemented sand and gravel, comprising the following steps:

[0033] 1) Pre-treatment, remove large aggregates of more than 80mm in the sand and gravel materials at the construction site, and at the same time remove plastics, branches, large mud and other non-stone material debris mixed in the sand and gravel materials, and the remaining as a masterbatch;

[0034] 2) The masterbatch is processed by ball milling to remove the sharp edges and corners of the masterbatch, and the masterbatch with sharp edges and corners is collected as auxiliary additives for subsequent use;

[0035] 3) Material preparation: Prepare the following materials in parts by weight: 1000 parts of masterbatch, 100 parts of water, 80 parts of cement, 70 parts of fly ash, 300 parts of light particles, 120 parts of magnetic powder, 100 parts of acrylate, 10 parts of admixture , 150 parts of the first component of s...

Embodiment 2

[0041] according to figure 1 As shown, the present embodiment proposes a preparation method of cemented sand and gravel, comprising the following steps:

[0042] 1) Pre-treatment, remove large aggregates of more than 80mm in the sand and gravel materials at the construction site, and at the same time remove plastics, branches, large mud and other non-stone material debris mixed in the sand and gravel materials, and the remaining as a masterbatch;

[0043] 2) The masterbatch is processed by ball milling to remove the sharp edges and corners of the masterbatch, and the masterbatch with sharp edges and corners is collected as auxiliary additives for subsequent use;

[0044] 3) Material preparation: Prepare the following materials in parts by weight: 1300 parts of masterbatch, 115 parts of water, 100 parts of cement, 100 parts of fly ash, 350 parts of light particles, 130 parts of magnetic powder, 110 parts of acrylate, 15 parts of admixture , 165 parts of the first component of...

Embodiment 3

[0050] according to figure 1 As shown, the present embodiment proposes a preparation method of cemented sand and gravel, comprising the following steps:

[0051] 1) Pre-treatment, remove large aggregates of more than 80mm in the sand and gravel materials at the construction site, and at the same time remove plastics, branches, large mud and other non-stone material debris mixed in the sand and gravel materials, and the remaining as a masterbatch;

[0052] 2) The masterbatch is processed by ball milling to remove the sharp edges and corners of the masterbatch, and the masterbatch with sharp edges and corners is collected as auxiliary additives for subsequent use;

[0053] 3) Material preparation: Prepare the following materials in parts by weight: 1500 parts of masterbatch, 130 parts of water, 130 parts of cement, 130 parts of fly ash, 400 parts of light particles, 140 parts of magnetic powder, 100-120 parts of acrylate, 20 parts Admixture, 180 parts of the first component of...

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Abstract

The invention relates to the technical field of cemented sand gravel production, in particular to cemented sand gravel and a preparation method thereof. The cemented sand gravel is prepared from sandgravel material master batch, water, cement, fly ash, light particles, magnetic powder, acrylate, an additive and shrimp shell powder, the preparation method comprises the steps of pretreatment, ballmilling treatment, material preparation, cementing material preparation, cementing sand gravel base material preparation and modified cementing sand gravel preparation, the prepared cementing sand gravel has the advantages of being high in mechanical strength and high in impermeability and freezing resistance, magnetic powder is added, so that the structural density can be stably kept without being damaged, and the service life of the cementing sand gravel is prolonged. The self-healing capability is realized, the high-temperature resistance is realized, and the problem of structural deformation of the gelling sand gravel damming structure caused by high temperature can be effectively prevented by adding the gelling sand gravel of the shrimp shell powder.

Description

technical field [0001] The invention relates to the technical field of cemented sand and gravel production, in particular to a cemented sand and gravel and a preparation method thereof. Background technique [0002] Cemented sand and gravel dam construction technology is a new dam construction technology developed internationally. It is characterized by the use of cementitious materials and sand and gravel materials (such as sand, stone, gravel, etc.) Earthwork transport machinery and compaction machinery for construction. Compared with conventional concrete dam construction technology, the technical characteristics of cemented sand and gravel dam construction are: only aggregates with super large particle sizes in the on-site sand and gravel materials are removed, and no screening, washing, etc. are required; in addition, the amount of cementitious materials is less ; Moreover, the construction speed is more than 30% faster, and the cost is saved by nearly 50%. Therefore,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/08C04B28/00C04B111/40
CPCC04B28/00C04B2201/50C04B2111/40C04B14/02C04B18/08C04B18/027C04B18/22C04B16/08C04B14/28C04B24/045C04B2103/10C04B2103/302C04B2103/0068
Inventor 张栋杨平张超李波
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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