CN100522866C - Non-cracking building mortar - Google Patents

Non-cracking building mortar Download PDF

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Publication number
CN100522866C
CN100522866C CNB2005100300346A CN200510030034A CN100522866C CN 100522866 C CN100522866 C CN 100522866C CN B2005100300346 A CNB2005100300346 A CN B2005100300346A CN 200510030034 A CN200510030034 A CN 200510030034A CN 100522866 C CN100522866 C CN 100522866C
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CN
China
Prior art keywords
cracking
cement
cellulose
building mortar
mortar
Prior art date
Application number
CNB2005100300346A
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Chinese (zh)
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CN1939871A (en
Inventor
王培铭
蒋正武
Original Assignee
同济大学
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Publication date
Application filed by 同济大学 filed Critical 同济大学
Priority to CNB2005100300346A priority Critical patent/CN100522866C/en
Publication of CN1939871A publication Critical patent/CN1939871A/en
Application granted granted Critical
Publication of CN100522866C publication Critical patent/CN100522866C/en

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Abstract

Masonry or finishing non-cracking mortar for internal and external walls and its production are disclosed. The non-cracking mortar consists of cement 20-35wt%, mineral admixture 2-20wt%, building sand 60-75wt%, cellulose ether 0.02-0.2wt% and organic fibre 0.1-0.2wt%. It has excellent water-retaining property and cohesion and fast construction-speed, it can be used for different wall masonry and finishing.

Description

A kind of non-cracking building mortar
Technical field
The present invention relates to a kind of construction work with not splitting mortar, relate to a kind of building inside and outside wall concretely and do not split mortar and preparation method thereof field with building by laying bricks or stones or wiping one's face.
Background technology
For the materials for wall of using in the construction work, no matter be bearing wall, or the infilled wall in the skeleton construction, wall crazing that ubiquity is serious and leakage problems have had a strong impact on construction quality and normal the use.To the control wall crazing, main at present employing construction measure, but effect is desirable not to the utmost; The exterior wall leakage problem then mainly adopts methods such as waterproof paint, and not only cost is higher, in case and outer wall cracking, waterproof paint can not address this problem.We can say that the cracking and the leakage problems that occur during materials for wall is used still do not have effective measure so far and controlled.
Materials for wall rimose major cause except the structural cracks that uneven settlement of foundation etc. causes, mainly can be summed up as following two aspects: the one, and the solid clay brick that self contraction ratio is traditional is big.The 2nd, adopt traditional sand-cement slurry or mixed mortar self shrink big, cohesive strength is low and coupling is unreasonable.
Bearing wall is with more than the strength grade general requirement MU10 of concrete segment, the voidage of standard block is about more than 60%, that is the area of actual load-bearing rib is equivalent to the concrete actual strength and reaches more than the 25MPa, and the intensity of masonry mortar is generally 10MPa less than 40%.Therefore, unreasonable on strength matching, and the wretched insufficiency of the cohesive strength between walling unit and the mortar.On the other hand, the contraction ratio clay brick of building block self is big, and the masonry water-intake rate is littler than brick, and mortar self shrinks big, so the ladder crack appears in building block building easily.
At the problems referred to above that exist in the present body of wall, especially novel wall material is developed the mortar with high application property, high cohesion, high bond strength, high cracking resistance and is had important engineering application value and social effect.
Summary of the invention
Purpose of the present invention overcomes existing the problems referred to above exactly, and a kind of building mortar with high cohesion, high bond strength, high cracking resistance is provided.Adjust the proportioning of mortar, can prepare and not split plastering mortar and masonry mortar etc.
To achieve these goals, technical scheme of the present invention is:
A kind of non-cracking building mortar, the mass fraction of each component is as follows:
Cement 20-35
Mineral admixture 2-20
Building sand 60-75
Ether of cellulose 0.02-0.2
Organic fibre 0.1-0.2.
Non-cracking building mortar of the present invention, wherein said cement can be silicate cement, ordinary Portland cement, slag or portland-pozzolan cement, but intensity should be not less than 42.5 strength grades.
Non-cracking building mortar of the present invention, wherein said mineral admixture can be flyash, levigate blast furnace slag, or limestone powder, and fineness should be at 100 orders or following.
Non-cracking building mortar of the present invention, wherein said building sand can adopt common yellow ground or river sand.
Non-cracking building mortar of the present invention, wherein said ether of cellulose can be the product of technical grade, and its viscosity is between 100-60000Pas.As hydroxyethylmethyl-cellulose, methylcellulose gum etc.
Non-cracking building mortar of the present invention, wherein said organic fibre can be polypropylene fibre, polyacrylamide fiber, can be nylon-6 etc. also, and the filament length of fiber is 12mm ± 3mm.
Non-cracking building mortar of the present invention, wherein the ether of cellulose of admixture and organic fibre produce synergy, make mortar have higher bonding strength and splitting resistance.
Non-cracking building mortar preparation method of the present invention is as follows:
Mass fraction by above-mentioned given component weighs each starting material, and it is stirred to form the premix non-cracking building mortar then.The general stirring got final product in 3 minutes.This non-cracking building mortar is added mixing water before construction, stir and just can use in 2 minutes.
Beneficial effect of the present invention:
1. non-cracking building mortar of the present invention can prevent the cracking of interior exterior wall fully under the job specifications situation.
2. non-cracking building mortar of the present invention has good workability and water-retentivity, and the sclerosis back has higher cohesive force with materials for wall or other matrixes.
3. concerning the constructor, except preparing burden soon, also has the plurality of advantages of construct fast and quality-guarantee.
4. non-cracking building mortar of the present invention goes for building by laying bricks or stones of different materials for walls, the engineering field such as wipe one's face of interior exterior wall.
Embodiment
Embodiment 1~3
Mass fraction by the given component of table one weighs each starting material, then it is stirred 3 minutes, forms the premix non-cracking building mortar.
Wherein embodiment 1 used cement is that intensity is not less than 42.5 silicate cement; Mineral admixture is the following limestone powders of fineness 100 orders; Ether of cellulose is a hydroxyethylmethyl-cellulose; Organic fibre is a polypropylene fibre, filament length 12mm.
Embodiment 2 used cement are that intensity is not less than 42.5 silicate cement; Mineral admixture is the following flyash of fineness 100 orders, and ether of cellulose is a methylcellulose gum; Organic fibre is a polypropylene fibre, filament length 12mm.
Embodiment 3 used cement are that intensity is not less than 42.5 portland-pozzolan cement; Mineral admixture is a fineness purpose slag, and ether of cellulose is a hydroxyethylmethyl-cellulose; Organic fibre is a polypropylene fibre, filament length 12mm.
This non-cracking building mortar is added mixing water before construction, stir and just can use in 2 minutes.
Table one
Component Embodiment 1 Embodiment 2 Embodiment 3
Cement 31.8 22.8 20.0
Mineral admixture 3.3 2.0 19.8
Building sand 65.6 75.0 60.0
Ether of cellulose 0.2 0.02 0.1
Organic fibre 0.2 0.2 0.1
Specifeca tion speeification behind each embodiment gained premix non-cracking building mortar and the water mix sees Table two.
Table two
Performance perameter Ultimate compression strength MPa Tension cohesive strength MPa The plastic cracking situation The dry shrinkage and cracking situation
Embodiment 1 15 0.8 Do not ftracture Do not ftracture
Embodiment 2 15 0.8 Do not ftracture Do not ftracture
Embodiment 3 5 0.5 Do not ftracture Do not ftracture
By table two as seen, non-cracking building mortar of the present invention can prevent cracking fully, and the sclerosis back has higher cohesive force with materials for wall or other matrixes.

Claims (4)

1, a kind of non-cracking building mortar dry powder, the mass fraction of each component is as follows:
Cement 20-35
Mineral admixture 2-20
Building sand 60-75
Ether of cellulose 0.02-0.2, ether of cellulose viscosity is between 100-60000Pas
Organic fibre 0.1-0.2,
Said cement is silicate cement, ordinary Portland cement, slag or the portland-pozzolan cement that intensity is not less than 42.5 strength grades.
2, non-cracking building mortar dry powder as claimed in claim 1 is characterized in that, said mineral admixture is flyash, levigate blast furnace slag or limestone powder, and fineness is at 100 orders or following.
3, non-cracking building mortar dry powder as claimed in claim 1 is characterized in that, said ether of cellulose is hydroxyethylmethyl-cellulose or methylcellulose gum.
4, non-cracking building mortar dry powder as claimed in claim 1 is characterized in that, said organic fibre is polypropylene fibre, polyacrylamide fiber or nylon-6, and the filament length of fiber is 12mm ± 3mm.
CNB2005100300346A 2005-09-27 2005-09-27 Non-cracking building mortar CN100522866C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2005100300346A CN100522866C (en) 2005-09-27 2005-09-27 Non-cracking building mortar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2005100300346A CN100522866C (en) 2005-09-27 2005-09-27 Non-cracking building mortar

Publications (2)

Publication Number Publication Date
CN1939871A CN1939871A (en) 2007-04-04
CN100522866C true CN100522866C (en) 2009-08-05

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Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102701695B (en) * 2012-05-31 2013-10-09 成都市第四建筑工程公司 Plastering material for building wall body
CN103058593A (en) * 2012-12-28 2013-04-24 嘉兴市博宏新型建材有限公司 Method for preparing common dry-mixed mortar by pulverized fuel ash and mining powder
CN103627224B (en) * 2013-11-04 2015-09-30 沈礼群 A kind of natural mineral matter coating and preparation method thereof
CN103626440B (en) * 2013-12-04 2015-08-19 桂林理工大学 A kind of mineral hot furnace slag dry-mixed mortar and preparation method thereof
CN104829172B (en) * 2015-04-01 2018-01-16 浙江忠信新型建材股份有限公司 A kind of walling is wiped one's face with dry-mixed material
CN105016641B (en) * 2015-08-10 2017-08-25 重庆建工住宅建设有限公司 A kind of agstone composite blend
CN105565722A (en) * 2016-01-05 2016-05-11 天津市永庆合建材科技有限公司 Outer wall rendering coat mortar
CN105906263A (en) * 2016-04-19 2016-08-31 金华市奥菲建材有限公司 Autoclaved aerated concrete masonry environment-friendly mortar and preparation method of same
CN105967613A (en) * 2016-05-16 2016-09-28 本溪金烜商贸有限公司 Multifunctional plastering mortar
CN106278057A (en) * 2016-08-25 2017-01-04 仇颖超 A kind of preparation method of waterproof mortar
CN106630724A (en) * 2016-10-21 2017-05-10 中南大学 Compound admixture for anti-crack limestone powder and preparation method of compound admixture
CN107098647A (en) * 2017-05-12 2017-08-29 昆明理工大学 A kind of high tenacity dry-mixed mortar and its preparation technology

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
聚合物改性粉煤灰建筑砂浆粉. 赵碧华.砖瓦,第9期. 2004
聚合物改性粉煤灰建筑砂浆粉. 赵碧华.砖瓦,第9期. 2004 *

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Free format text: CORRECT: ADDRESS; FROM: 200092 YANGPU, SHANGHAI TO: 572011 SANYA, HAINAN PROVINCE

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Owner name: HAINAN RUIZE NEW BUILDING MATERIAL CO., LTD.

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Address after: 572011 No. 488 Yingbin Road, Hainan, Sanya

Patentee after: Hainan Ruize New Building Material Co.,Ltd.

Address before: 200092 Shanghai City, Yangpu District Siping Road No. 1239

Patentee before: Tongji University

EE01 Entry into force of recordation of patent licensing contract

Assignee: Qionghai Ruize Concrete Distribution Co. Ltd.

Assignor: Hainan Ruize New Building Material Co.,Ltd.

Contract record no.: 2012460000003

Denomination of invention: Non-cracking building mortar

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