Ecological cement high-strength grouting material and preparation method thereof

A technology of ecological cement and grouting materials, applied in the field of building materials, can solve the problems of late strength impact, increased production costs, and non-compliance with national sustainable development strategy requirements, etc.

Inactive Publication Date: 2020-10-23
山东华迪建筑科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of the above technology is that the cementitious material for grouting is mainly ordinary portland cement or special cement, which provides strength support for grouting through cement hydration, ignoring the potential activity of mineral admixtures
The cement production process consumes a lot of energy and non-renewable resources, and the carbon dioxide generated at the same time has a certain greenhouse effect, which does not meet the requirements of the national sustainable development strategy
In the preparation process of grouting materials, a certain amount of early strength agent is added in order to improve the early strength, which not only increases the production cost, but also has a certain impact on the later strength

Method used

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  • Ecological cement high-strength grouting material and preparation method thereof
  • Ecological cement high-strength grouting material and preparation method thereof
  • Ecological cement high-strength grouting material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0040] A method for preparing ecological cement high-strength grouting material, comprising the following steps:

[0041] (1) Accurately weigh the gelling material, aggregate and admixture of the specified amount according to the proportioning in Table 1;

[0042] (2) Mix the cementitious material, aggregate and admixture evenly, pour it into a standard mortar mixer, add water of specified quality (12% of the total material), stir at 140±5r / min for 60s, and stir at 280±5r / min Stir at 10r / min for 30s, let stand for 90s, shovel the material on the pot wall into the pot, and then stir at 280±10r / min for 60s;

[0043] (3) Use the grouting material flow cone funnel to measure the initial, 30min, and 60min fluidity of the grouting material, put the evenly stirred grouting material into a 40*40*160 standard triple test mold evenly coated with butter, vibrate evenly, and wipe flat;

[0044] (4) Leave the mold at room temperature for 24 hours, put it into a standard constant temperat...

Embodiment 2

[0051] A method for preparing ecological cement high-strength grouting material, comprising the following steps:

[0052] (1) Accurately weigh the specified amount of cementitious material, aggregate and admixture according to the ratio in Table 3;

[0053] (2) Mix the cementitious material, aggregate and admixture evenly, pour it into a standard mortar mixer, add water of specified quality (12% of the total material), stir at 140±5r / min for 60s, and stir at 280±5r / min Stir at 10r / min for 30s, let stand for 90s, shovel the material on the pot wall into the pot, and then stir at 280±10r / min for 60s;

[0054] (3) Use the grouting material flow cone funnel to measure the initial, 30min, and 60min fluidity of the grouting material, put the evenly stirred grouting material into a 40*40*160 standard triple test mold evenly coated with butter, vibrate evenly, and wipe flat;

[0055] (4) Leave the mold at room temperature for 24 hours, put it into a standard constant temperature cur...

Embodiment 3

[0062] A method for preparing ecological cement high-strength grouting material, comprising the following steps:

[0063] (1) Accurately weigh the specified amount of cementitious material, aggregate and admixture according to the ratio in Table 5;

[0064](2) Mix the cementitious material, aggregate and admixture evenly, pour it into a standard mortar mixer, add water of specified quality (12% of the total material), stir at 140±5r / min for 60s, and stir at 280±5r / min Stir at 10r / min for 30s, let stand for 90s, shovel the material on the pot wall into the pot, and then stir at 280±10r / min for 60s;

[0065] (3) Use the grouting material flow cone funnel to measure the initial, 30min, and 60min fluidity of the grouting material, put the evenly stirred grouting material into a 40*40*160 standard triple test mold evenly coated with butter, vibrate evenly, and wipe flat;

[0066] (4) Leave the mold at room temperature for 24 hours, put it into a standard constant temperature curi...

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Abstract

The invention provides an ecological cement high-strength grouting material and a preparation method thereof. The ecological cement high-strength grouting material has the advantages of high flowability, favorable constructability, long operable time and smooth and flat surface after completion, and can perform self-remaining leveling. The ecological cement high-strength grouting material comprises a cementing material, aggregate and an additive, wherein the cementing material comprises slag powder, desulfurized gypsum and an alkaline activator; the aggregate is prepared from, by weight, 250-300 parts of 20-40-mesh quartz sand, 100-150 parts of 40-70-mesh dried sand and 100-150 parts of 70-120-mesh dried sand; and the additive comprises, by weight, 1-2 parts of a water reducing agent, 0.1-0.6 part of a retarder, 0.1-0.3 part of a plastic expanding agent and 0.1-0.3 part of a defoaming agent.

Description

technical field [0001] The invention relates to an ecological cement high-strength grouting material and a preparation method thereof, which are suitable for building reinforcement and reconstruction projects, high-precision equipment foundations and emergency repair construction, and belong to the technical field of building materials. Background technique [0002] Building structure reinforcement projects, emergency repair projects and high-precision equipment foundation construction often require high strength, short construction period, and good workability of materials. Therefore, it is particularly necessary to develop a grouting material with high compressive strength, good fluidity and micro-expansion. [0003] Patent 1 (publication number: CN107445542A) discloses a preparation method of cement-based high-strength grouting material, using ordinary Portland cement, fine sand, mineral powder, metakaolin, expansion agent, defoamer, water reducer, plastic A high-strengt...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B111/26C04B111/70C04B111/20C04B111/23C04B18/14
CPCC04B28/006C04B2111/0075C04B2111/203C04B2111/23C04B2111/26C04B2111/70C04B2201/52C04B18/141C04B22/145C04B14/06C04B20/0076C04B2103/302C04B2103/22C04B2103/50C04B2103/0068C04B24/42C04B22/062Y02W30/91
Inventor 常青山周在波逄鲁峰耿磊付鹏郎慧东张健壮程鹏王敏王恒张攀
Owner 山东华迪建筑科技有限公司
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