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Lime material and preparation method thereof

A technology of lime and slaked lime, which is applied in the field of building materials, can solve the problems of poor adhesion, intolerance to freezing, and low strength, and achieve the effects of good bonding, improved air humidity, and good scrub resistance

Inactive Publication Date: 2013-03-13
TONGJI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When its crystals are as large as white marble, calcium carbonate CaCO 3 High strength, water resistance, frost resistance, and when CaCO 3 When the crystal structure is small, or when there are no crystals and fine particles, the strength is low, the adhesion is poor, and it is not resistant to water and frost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Embodiment 1: lime binding agent (following embodiment is weight ratio)

[0082] 1-1

[0083] Slaked lime 47

[0084] Tap water 51.8

[0085] Cellulose Ether 1

[0086] Water reducer 0.2

[0087] 1-2

[0088] Slaked lime 46.7

[0089] tap water 52

[0090] Cellulose Ether 1

[0091] Water reducer 0.3

[0092] 1-3

[0093] Slaked lime 49

[0094] Tap water 49.3

[0095] Cellulose ether 1.2

[0096] Water reducer 0.5

[0097] 1-4

[0098] Slaked lime 50

[0099] Tap water 48.5

[0100] Cellulose Ether 1

[0101] Water reducer 0.5

[0102] 1-5

[0103] Slaked lime 49.5

[0104] Tap water 48.9

[0105] Cellulose ether 1.2

[0106] Water reducer 0.4

[0107] 1-6

[0108] Slaked lime 48.9

[0109] Tap water 50

[0110] Cellulose ether 0.8

[0111] Water reducer 0.3

[0112] 1-7

[0113] Slaked lime 47

[0114] Tap water 51.7

[0115] Cellulose ether 0.9

[0116] Water reducer 0.4

[0117] 1-8

[0118] Slaked lime 48.5

[0119] Tap water 50.1 ...

Embodiment 2

[0142] Example 2: new paper ash

[0143] 2-1

[0144] Slaked lime 47

[0145] Tap water 51.3

[0146] Cellulose Ether 1

[0147] Defoamer 0.2

[0148] Yellow paper 0.5

[0149] 2-2

[0150] Slaked lime 46.7

[0151] Tap water 51.3

[0152] Cellulose Ether 1

[0153] Defoamer 0.3

[0154] Yellow paper 0.7

[0155] 2-3

[0156] Slaked lime 49

[0157] Tap water 48.3

[0158]Cellulose ether 1.2

[0159] Defoamer 0.5

[0160] yellow paper 1

[0161] 2-4

[0162] Slaked lime 50

[0163] Tap water 47.5

[0164] Cellulose Ether 1

[0165] Defoamer 0.5

[0166] yellow paper 1

[0167] 2-5

[0168] Slaked lime 49.5

[0169] Tap water 47.7

[0170] Cellulose ether 1.2

[0171] Defoamer 0.4

[0172] Yellow paper 1.2

[0173] 2-6

[0174] Slaked lime 48.9

[0175] Tap water 48.5

[0176] Cellulose ether 0.8

[0177] Defoamer 0.3

[0178] Yellow paper 1.5

[0179] 2-7

[0180] Slaked lime 47

[0181] Tap water 49.9

[0182] Cellulose ether 0.9

[0183] ...

Embodiment 2

[0285] Slaked lime 47

[0286] Tap water 49.9

[0287] Cellulose ether 0.9

[0288] Defoamer 0.4

[0289] Yellow paper 1.8

[0290] The preparation steps of this new paper ash embodiment:

[0291] (Step 1) according to the formula, quantitative water is added in the high-speed disperser;

[0292] (step 2) start the high-speed disperser, and adjust the rotating speed to 500-600 rpm;

[0293] (Step 3) Add the defoamer weighed according to the formula into the high-speed disperser within 3-5 minutes;

[0294] (step 4) add 25-35% of the total slaked lime material that meets formula requirement at a uniform speed in 5-10 minutes

[0295] (Step 5) Adjust the rotating speed of the high-speed disperser to 800-1000 rpm; within 5-10 minutes, add 25-35% of the total slaked lime material that meets the formula requirements at a uniform speed, and then stir for about 3-5 minutes;

[0296] (Step 6) Adjust the rotating speed of the high-speed disperser to 1200-1300 rpm, add the remain...

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Abstract

The invention discloses a lime material and a preparation method thereof. A natural lime material which is not added with any synthetic resin and is produced by dispersion technology can be prepared into a lime binder which contains 45 to 50 weight percent of hydrated lime, 48 to 52 weight percent of tap water, 0.8 to 1.2 weight percent of cellulose ether and 0.2 to 1.8 weight percent of water reducer, and novel paper strip mixed lime mortar which contains 45 to 50 weight percent of hydrated lime, 48 to 52 weight percent of tap water, 0.8 to 1.2 weight percent of cellulose ether, 0.5 to 2 weight percent of yellow paper for worshipping the gods and 0.2 to 0.5 weight percent of deformer according to different material formulas. The raw materials are put into a high-speed disperser according to required sequence and time, and are stirred for about 1 to 2 hours. The lime material has the advantages of high bond strength, rapid curing, washability, no organic volatile matter and the like, and can be used as a binder or a decorative surface course.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to a lime material and a preparation method thereof. Background technique [0002] Lime and its products such as paper ash are traditional materials. However, due to the poor bonding performance of traditional lime, it is not resistant to water and frost, so it is used less and less in new buildings and historical building repairs. [0003] In order to carry forward the advantages of lime and make it more widely used in new construction and historical building protection and repair, a lot of research work has been carried out at home and abroad in the past ten years. [0004] Previous research work mainly has two directions: the first direction is "chemical method" to improve lime. The method adopted is: similar to the ancient method of adding tung oil to lime, adding organic synthetic resin, such as acrylic resin emulsion, to increase the cohesiveness of lime material, but the lime...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/10
Inventor 戴仕炳张德兵
Owner TONGJI UNIV
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