Lime-based micro-contraction grouting material composition and preparation method thereof

A technology of grouting material and lime, which is applied in the field of lime-based micro-shrinkage grouting material composition and its preparation, can solve problems such as low strength, impossibility, and slow setting speed, and achieve high strength, good compatibility, and dense grouting effect

Active Publication Date: 2017-10-24
浙江德赛堡建筑材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Both have their own characteristics. Cement materials are widely used in the engineering industry due to their high bond strength, excellent anti-aging and moisture-proof and impervious properties. However, a large number of scientific research and engineering examples show that modern cement materials are different from traditional masonry. Incompatibility with similar materials, cement contains a large amount of water-soluble salt, which will seriously damage masonry materials; secondly, once a problem occurs in a cement building, it is very difficult or even impossible to repair it again
However, lime-based grouting materials also have defects, such as low strength, slow setting speed and easy shrinkage, so that the filling reinforcement effect is difficult to ...

Method used

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  • Lime-based micro-contraction grouting material composition and preparation method thereof
  • Lime-based micro-contraction grouting material composition and preparation method thereof
  • Lime-based micro-contraction grouting material composition and preparation method thereof

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Experimental program
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Effect test

Embodiment 7

[0080] Embodiment 7: a kind of preparation method of lime-based micro-shrinkage grouting material composition, comprises the steps:

[0081] ①Dry mixing: Put each component into a vertical cone dry powder mixer and stir for 40 minutes to make it evenly mixed;

[0082] ②Adding water: Mix the uniformly mixed dry material with clear water to form a mixed material, and the mass of water added accounts for 25% of the total mass of each component;

[0083] ③Initial dispersion: adjust the speed of the disperser to 500 rpm, take part of the material that accounts for 25% of the total mass of the mixed material, and add it to the disperser at a uniform speed within a time period of 3 minutes;

[0084] ④ Two-stage dispersion: adjust the speed of the disperser to 800 rpm, take part of the material that accounts for 25% of the total mass of the mixed material, and add it to the disperser at a uniform speed within a time period of 3 minutes;

[0085] ⑤ Three-stage dispersion: adjust the s...

Embodiment 8

[0087] Embodiment 8: a kind of preparation method of lime-based micro-shrinkage grouting material composition, comprises the steps:

[0088] ①Dry mixing: Put each component into a vertical cone dry powder mixer and stir for 60 minutes to make it evenly mixed;

[0089] ② Adding water: Mix the uniformly mixed dry material with clear water to form a mixed material, and the mass of water added accounts for 35% of the total mass of each component;

[0090] ③Initial dispersion: adjust the speed of the disperser to 600 rpm, take part of the material that accounts for 35% of the total mass of the mixed material, and add it to the disperser at a uniform speed within a time period of 6 minutes;

[0091] ④ Two-stage dispersion: adjust the speed of the disperser to 1000 rpm, take part of the material that accounts for 35% of the total mass of the mixed material, and add it to the disperser at a uniform speed within a time period of 6 minutes;

[0092] ⑤ Three-stage dispersion: adjust the...

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Abstract

The invention discloses lime-based micro-contraction grouting material composition and relates to the technical field of materials for brick and stone historical relic protection. The composition is prepared from components in percentage by weight as follows: 30%-60% of aggregate, 30%-60% of natural hydraulic lime, 3%-9% of an expanding agent, 3%-8% of active micropowder and 0.8%-1.6% of an auxiliary. The micro-contraction grouting material has good compatibility with traditional brick and stone materials in physical and chemical property as well as relatively high strength, besides, micro volume expansion can be produced after the grouting material is poured into gaps due to reasonable introduction of the expanding agent, so that the grouting material can be closely combined with bricks and stone serving as a base material, and more compact grouting is realized.

Description

technical field [0001] The invention relates to the technical field of materials for protecting masonry cultural relics, in particular to a lime-based micro-shrinkage grouting material composition and a preparation method thereof. Background technique [0002] Masonry cultural relics (including petroglyphs, stone or clay sculptures, inscriptions, etc.) and historical buildings are an important part of Chinese culture, but under the influence of various natural factors and human activities, they will also appear aging and hollow. , Peeling, damage, breakage and missing problems require continuous maintenance, repair and protection. In these protection projects, corresponding protective materials are required for bonding fractured components, filling hollow and damaged parts, and strengthening the structure of cultural relics. [0003] Among them, the bonding and strengthening of masonry materials with cracks or cavities generally requires the use of perfusion bonding materia...

Claims

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Application Information

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IPC IPC(8): C04B28/12
CPCC04B28/12C04B2111/70C04B2201/50C04B14/28C04B14/06C04B22/064C04B22/066C04B22/06C04B14/062C04B14/106C04B2103/50C04B2103/302
Inventor 伍洋
Owner 浙江德赛堡建筑材料科技有限公司
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