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Blocky quicklime doped powder lime mortar for repairing ancient buildings and preparation method ofblocky quicklime doped powder lime mortar

A technology of quicklime and fossilized lime, applied in the field of ancient building repair materials, can solve the problems of not reducing performance, safety hazards, resource waste, etc., and achieve the effect of avoiding deterioration and waste, avoiding safety hazards, and increasing water absorption

Active Publication Date: 2021-11-26
THE PALACE MUSEUM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of potential safety hazards caused by partial pulverization of block quicklime as ancient building repair materials, and to eliminate the problem of waste of resources, and to develop an optimal ratio and preparation method of block quicklime mixed with partially pulverized lime, Solve resource waste without degrading performance

Method used

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  • Blocky quicklime doped powder lime mortar for repairing ancient buildings and preparation method ofblocky quicklime doped powder lime mortar
  • Blocky quicklime doped powder lime mortar for repairing ancient buildings and preparation method ofblocky quicklime doped powder lime mortar
  • Blocky quicklime doped powder lime mortar for repairing ancient buildings and preparation method ofblocky quicklime doped powder lime mortar

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Effect test

Embodiment 1

[0042] In order to study the rationality of different slaking methods, the present invention first adopts the slaked lime produced by two slaking methods to compare the macroscopic appearance of the sample. The water-cement ratio of the two methods is difficult to unify. The mortar adopts a uniform fluidity, and the detailed information of the samples is shown in Table 1.

[0043] Table 1 Specimen Details

[0044]

[0045] figure 1 The macroscopic morphology of the samples after sample preparation and curing by different dusting methods. It can be seen from the figure that CT-7, CT-15, and CT-28 have relatively serious cracks, which shows that there are still many chronic ash after 28 days of lime stacking in the traditional method, and the reaction will continue to cause swelling and cracking after sample preparation. After 56 days, this cracking phenomenon will disappear, and the construction period will obviously be delayed during construction. To shorten the construct...

Embodiment 2

[0047] The detailed ratio of raw materials when table 2 is stuffy;

[0048] Table 3 detailed proportioning of raw materials during sample preparation;

[0049] Table 4 Mortar sample 60-day density, open porosity and water absorption;

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Abstract

The invention relates to blocky quicklime doped powder lime mortar for repairing ancient buildings and a preparation method of the blocky quicklime doped powder lime mortar, and belongs to the technical field of historic building repairing material research. The raw materials of the blocky quicklime doped powder lime mortar comprise a cementing material and water, wherein the cementing material is blocky quicklime and pulverized lime; and the blocky quicklime is a blocky part before use, and the pulverized lime is a pulverized part formed by deterioration of the blocky quicklime in air. The mass percent of the blocky quicklime in the cementing material is 50-70%, preferably 60%; and the content of the pulverized lime in the cementing material in percentage by mass is 30-50%, preferably 40%. The pulverization modified lime is used to the maximum extent, and meanwhile, the prepared mortar has high mechanical properties, water resistance and freeze thawing resistance.

Description

technical field [0001] The invention relates to an optimal ratio and preparation method of massive quicklime mixed with pulverized lime mortar for repairing ancient buildings, and belongs to the technical field of research on repairing materials for ancient buildings. Background technique [0002] The use of traditional lime has a long history. According to the existing archaeological evidence, lime was fired and used in my country as early as prehistoric times. Most of the remaining ancient buildings use traditional lime as a structural adhesive. There are as many as thousands of ancient buildings left over from the Ming and Qing Dynasties, which are my country's outstanding architectural heritage. However, after thousands of years of wind, rain, sun, and man-made damage, most of the cultural relics such as ancient building walls and other cultural relics that use traditional mortar as a bonding agent are severely damaged, and some are on the verge of destruction, which urge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/06
CPCC04B2/063
Inventor 张典王辉尚国华王菊琳陈绍华
Owner THE PALACE MUSEUM
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