CN106592815A - Manufacturing method of brick wall with high shear resistance and shock resistance - Google Patents
Manufacturing method of brick wall with high shear resistance and shock resistance Download PDFInfo
- Publication number
- CN106592815A CN106592815A CN201611112963.6A CN201611112963A CN106592815A CN 106592815 A CN106592815 A CN 106592815A CN 201611112963 A CN201611112963 A CN 201611112963A CN 106592815 A CN106592815 A CN 106592815A
- Authority
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- China
- Prior art keywords
- wall
- masonry
- cement
- shock resistance
- water
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
Abstract
The invention provides a manufacturing method of a brick wall with high shear resistance and shock resistance. The manufacturing method comprises the following steps that bricks are taken out, polyvinyl alcohol fiber reinforced cement-based composite materials serve as masonry mortar, and a three-one bircklaying method is adopted for bricklaying; after bricklaying is completed, plastering is conducted on the both sides of a wall body, and plastering mortar is high ductility materials, wherein the high ductility materials are prepared from water, binding materials, silica sand and fibers, the mass ratio of the water to the binding materials, the silica sand and the fibers is 1:2.44:(0.8-1):0.038, the binding materials are cement and fly ash, and the fly ash accounts for 40%-50% of the total amount of the binding materials; and after plastering is conducted, water is sprayed onto the wall body for curing in one to seven days, and then the brick wall is obtained after the wall body is cured for 28 days under the outdoor environment condition. According to the manufacturing method of the brick wall with high shear resistance and shock resistance, the shear resistance of the brick wall can be remarkably improved, and the shock resistance can also be greatly improved.
Description
Technical field
The present invention relates to a kind of masonry wall technical field, specifically a kind of block with high shearing resistance and high shock resistance energy
The manufacture method of body wall.
Background technology
In all kinds of buildings of China, masonry structure accounts for very big a ratio, at present, still has many places to need to use block
The filling wall of body structure, such as concrete frame structure, in addition in state long neglected and in disrepair, urgent need adds also many masonry walls
Gu, traditional masonry wall is all to use traditional masonry mortar (water:Cement:Sea sand=1-3:1:1.375) brick is wrapped up, layer by layer
Build by laying bricks or stones after forming again in the traditional motar (water of wall entirety outer surface covering:Cement:Sea sand=1-3:1:3), but either
Masonry mortar or motar, its shortcoming is all fairly obvious, because shear resistance is poor, causes cracking, forms crack, is had
Even up to several mm wides, further, since material fragility is excessive, ductility is poor, causes shock resistance very poor, produces serious safety
Hidden danger.Xu Lei, horse it is blue and green (Xu Lei, horse is blue and green. using masonry structure shear strength test research [J] of different mortars. concrete
With cement products, 2014,11:69-71) through studying the shear strength for drawing traditional masonry wall for 1.459Mpa, shear behavior
It is very poor.Su Qiwang (Su Qiwang. seismic capacity of masonry structure evaluation studies [D]. Chengdu:Southwest Jiaotong University, 2007) through grinding
Study carefully when the traditional masonry wall of discovery is destroyed and belong to brittle break, anti-seismic performance is very poor in reality.
Masonry wall composition material mainly includes brick and mortar two parts, is exactly ordinary red brick for brick, substantially cannot
Change, so can the shear-carrying capacity and anti-seismic performance that whether can improve mortar to improve masonry wall just enter into masonry wall
Can the bottleneck problem of one step development, be also the key issue for affecting masonry wall more use.
The content of the invention
The purpose of the present invention is for not enough present in current techniques, there is provided a kind of to have high shearing resistance and high shock resistance energy
Masonry wall manufacture method.The method adopts polyvinyl alcohol fiber reinforced cement based composites (abbreviation PVA-ECC) conduct
Masonry mortar, and substitute traditional motar by high-toughness material, makes its shear behavior of body of wall and the anti-seismic performance built
It is substantially improved, so as to solve the problems, such as the shear behavior and poor seismic behavior of traditional masonry wall.
The present invention solves the technical scheme that adopted of the technical problem:
A kind of manufacture method with high shearing resistance and the masonry wall of high shock resistance energy, comprises the following steps:
1) brick test block is poured with water logging;
2) polyvinyl alcohol fiber reinforced cement based composites (abbreviation PVA-ECC) are prepared;
3) brick is taken out, with PVA-ECC as masonry mortar, is built by laying bricks or stones using " 31 " masonry method, wherein, brickwork joint
Width is 9-11mm;
4) build by laying bricks or stones the two sides of body of wall is plastered after completing 5~7 hours, the thickness per face is in 13-17mm, motar
For high-toughness material;
Wherein, described high-toughness material is obtained by the proportioning of following material, wherein, quality compares water:Binder Materials:Quartz
Sand:Fiber=1:2.44:0.8-1:0.038, wherein Binder Materials is concrete and coal ash, and flyash accounts for binder total amount
40%-50%;
5) daily watering maintenance is carried out to body of wall in 7 days after plastering, is conserved under outdoor environmental conditions afterwards to 28 day age
Phase obtains masonry wall.
Described fiber is polyvinyl alcohol series fiber.The preferably Novel polyvinyl alcohols of Japan KURALON K- II series is fine
Dimension;
Described cement is the Portland cements of P.O 42.5;Described flyash is I grade of flyash;Described quartz
Sand is refined 80-100 mesh quartz sands.
The preparation method of described high-toughness material, comprises the following steps:
1. raw material is weighed according to the above ratio;
2. load weighted cement, flyash and quartz sand are put into into dry mixing 3 to 5 minutes in agitated kettle, the rotating speed of agitated kettle
For the speed of 30-50 turn/min;
3. water is subsequently adding, is stirred 4 to 6 minutes;
4. PVA fibers are finally placed into, the rotating speed for adjusting agitated kettle is that 50-70 turns the/speed of min, wet-mixing 5 to 7 minutes,
It is uniformly dispersed to PVA fibers, finally obtains high-toughness material.
Note:Masonry wall of the present invention does not fix length and width.
The invention has the beneficial effects as follows:
The inventive method can be obviously improved the shear behavior of masonry wall, make brick block by this high-toughness material by interior and
Other places firmly wraps, and the shear behavior of walling is significantly lifted, and destruction also has obvious ductility so that antidetonation
Performance is also improved significantly, so as to solve the problems, such as masonry wall shearing resistance and poor seismic behavior.For example in embodiment 1, build
The shear-carrying capacity of body wall reaches 505kN, and only masonry mortar or motar uses high-toughness material shear-carrying capacity
375 or 340kN are reached, traditional masonry wall (250kN) has been compared and is substantially improved.Simultaneously the limit of masonry wall is erected in embodiment 1
Traditional masonry wall (6.46mm and 1.12mm) is compared in straight displacement (7.22mm) with Limiting Level relative displacement (4.02mm) also to be had
Very big lifting:The use of a large amount of flyash in high-toughness material reduces the consumption of cement, is conducive to green building and saving
The energy;The self compacting ability of high-toughness material allows its casting process without vibrating or slightly vibrating, and saves to a certain extent
Manpower and time;Masonry wall can be made to be used in more location.
Description of the drawings:
Fig. 1 is the size (unit of masonry wall:Mm) and loading schematic diagram, wherein, Fig. 1 a be front schematic view, Fig. 1 b positions side
Face schematic diagram;Fig. 1 c are loading schematic diagram;
Fig. 2 is the masonry wall load-vertical displacement curve of embodiment 1-4.
Specific embodiment
The present invention is further discussed below with reference to embodiment and accompanying drawing, but not in this, as to the application claim guarantor
The restriction of shield scope.
Manufacture method (abbreviation method) of the present invention with high shearing resistance and the masonry wall of high shock resistance energy, comprises the concrete steps that:
1) brick test block is poured with water logging;
2) while preparing masonry mortar, masonry mortar adopts polyvinyl alcohol fiber reinforced cement based composites, and proportioning is not
Limit, can prepare successfully PVA-ECC:
3) after the completion of PVA-ECC to be prepared brick is taken out and is built by laying bricks or stones, adopt " 31 " masonry method, i.e., one shovel ash, one
Block brick, one squeeze and rub, and the method for operating scraped off with spatula with the mortar for handling extrusion in brickwork joint is built by laying bricks or stones, if one layer vertically grey
Seam is discontented, adopts when building upper strata by laying bricks or stones plus paste-making method makes the mortar joint full, it is ensured that its width is in 9-11mm;
4) build by laying bricks or stones the two sides of body of wall is plastered after completing 6 hours, in 13-17mm, motar is using a kind of for thickness
High-toughness material:
1. quality mixture ratio water is pressed:Binder Materials:Quartz sand:Fiber=1:2.44:0.8-1:0.038 weighs raw material, its
Middle Binder Materials is concrete and coal ash, and flyash accounts for the 40%-50% of binder total amount;
2. load weighted cement, flyash and quartz sand are put into into dry mixing 3 to 5 minutes in agitated kettle, to stirring, are stirred
The rotating speed for mixing pot is the speed of 30-50 turn/min;
3. load weighted water is subsequently adding, is stirred 4 to 6 minutes;
4. PVA fibers are finally placed into, the rotating speed for adjusting agitated kettle is that 50-70 turns the/speed of min, wet-mixing 5 to 7 minutes,
It is uniformly dispersed to PVA fibers;
5) watering maintenance is carried out to component in first 7 days after completing, is conserved under outdoor environmental conditions afterwards to 28 days
Age obtains masonry wall;
Note:Masonry wall of the present invention does not fix length and width.
Described cement is the Portland cements of P.O 42.5;Described flyash is I grade of flyash;Described quartz
Sand is refined 80-100 mesh quartz sands;The parameter area of described fiber is that Japan's KURALON II Novel polyvinyl alcohols of K- are serial
Fiber.
Polyvinyl alcohol fiber reinforced cement based composites (Polyvinyl alcohol of the present invention
Engineered ceme ntitious composites), abbreviation PVA-ECC.PVA-ECC is a kind of well known materials, mainly by
Water, cement, flyash, quartz sand, PVA fibers, water reducer composition, proportioning is not limited, and can prepare successfully PVA-ECC can be (see field
Gravel etc. (field gravel, Zhu Guihong, Guo Pinggong, Zhao Tiejun .PVA fiber reinforcement strain hardening cement-based materials toughness properties research [J].
Architecture science, 2006 (5):165+178-180.).
Embodiment 1
The present embodiment has the manufacture method of the masonry wall of high anti-seismic and high shear behavior, comprises the concrete steps that:
1) brick test block is poured with water logging;
2) while preparing masonry mortar, masonry mortar adopts PVA-ECC:
1. quality mixture ratio is pressed for water:Cement:Flyash:Quartz sand:Water reducer:Fiber=1:1.83:2.197:
1.463:0.024;0.063 weighs raw material;
2. load weighted cement, flyash and quartz sand are put into into dry mixing 3 to 5 minutes in agitated kettle, to stirring, are stirred
The rotating speed for mixing pot is of about the speed of 40 turns/min;
3. load weighted water and water reducer are subsequently adding, stirring is played effectiveness completely for 6 minutes to water reducer;
4. PVA fibers are finally placed into, the rotating speed for adjusting agitated kettle is of about the speed of 60 turns/min, 5 to 7 points of wet-mixing
Clock, is uniformly dispersed to PVA fibers;
3) after the completion of PVA-ECC to be prepared brick is taken out and is built by laying bricks or stones, adopt " 31 " masonry method, i.e., one shovel ash, one
Block brick, one squeeze and rub, and the method for operating scraped off with spatula with the mortar for handling extrusion in brickwork joint is built by laying bricks or stones, if one layer vertically grey
Seam is discontented, adopts when building upper strata by laying bricks or stones plus paste-making method makes the mortar joint full, it is ensured that its width is in 10mm.
4) build by laying bricks or stones the two sides of body of wall is plastered after completing 6 hours, thickness adopts a kind of high-ductility in 15mm, motar
Property material,
1. quality mixture ratio is pressed for water:Cement:Flyash:Quartz sand:Fiber=1:1.108:1.332:0.886:0.038
Ratio weigh raw material;
2. load weighted cement, flyash and quartz sand are put into into dry mixing 3 to 5 minutes in agitated kettle, to stirring, are stirred
The rotating speed for mixing pot is of about the speed of 40 turns/min;
3. load weighted water is subsequently adding, is stirred 4 to 6 minutes;
4. PVA fibers are finally placed into, the rotating speed for adjusting agitated kettle is of about the speed of 60 turns/min, 5 to 7 points of wet-mixing
Clock, is uniformly dispersed to PVA fibers;
5) daily watering maintenance is carried out to component in first 7 days after completing, conserve under outdoor environmental conditions afterwards to
28 day age obtained masonry wall.
The size of masonry wall prepared by this example is b × h × l=240mm × 494mm × 490mm.
Due to scantling front approximating square, therefore component can be inclined 45 during testo, and at the top and bottom of component
Two, portion diagonal angle respectively places a hat-shaped carrier with fixing component, and the anti-of masonry wall is tested finally by diagonal load test
Cut performance.
This case step 1) -5) raw materials are as follows:Cement:P.O42.5 Portland cements;Flyash:I grade of powder
Coal ash;Sand:Refined 80-100 mesh quartz sand;Water reducer:SIKA-325 series Polycarboxylic Superplasticizers;PVA fibers:Japan
The Novel polyvinyl alcohols of KURALON K- II series fiber, specific performance is referring to following table.
The PVA fibre property parameters of table 1
Embodiment 2
Embodiment 2 is distinguished as building by laying bricks or stones using with test method same in embodiment 1, test procedure and test test specimen
Mortar is traditional cement mortar, and composition mass ratio is water:Cement:Sea sand=1-3:1:1.375, motar is also conventional cement
Mortar, composition mass ratio is water:Cement:Sea sand=1-3:1:3.
Embodiment 3
Embodiment 3 is distinguished as plastering using with test method same in embodiment 1, test procedure and test test specimen
Mortar is traditional cement mortar, and composition mass ratio is water:Cement:Sea sand=1-3:1:3.
Embodiment 4
Embodiment 4 is distinguished as building by laying bricks or stones using with test method same in embodiment 1, test procedure and test test specimen
Mortar is traditional cement mortar, and composition mass ratio is water:Cement:Sea sand=1-3:1:1.375.
The index of correlation of masonry wall is as shown in the table obtained in embodiment 1,2,3,4 (numbering 1,2,3,4):
The different masonry wall Shear Strength of Reinforced Concrete Members of table 2 and displacement
According to upper table as can be seen that embodiment 1 had both been substituted for PVA-ECC masonry mortar, and motar is replaced
Into high-toughness material, obtain with high shearing resistance and high shock resistance can masonry wall properties be best, wherein shearing resistance is held
Carry power (505kN) and shearing strength (3.02MPa) is maximum, wherein shear-carrying capacity is traditional masonry wall (embodiment 2)
Twice, limit vertical displacement (5.92mm) and Limiting Level relative displacement (4.02mm) are also maximum, Limiting Level relative displacement
Traditional masonry wall (1.12mm) is even more far longer than, illustrates that masonry wall has very big ductility, be conducive to antidetonation.Can be with by accompanying drawing
Find out, in the case of identical vertical displacement, the shear-carrying capacity of embodiment 1 is maximum, is far longer than embodiment 2.The above
Absolutely prove that embodiment 1 is obtained and traditional masonry obtained in embodiment 1 is compared with the masonry wall of high shock resistance energy with high shearing resistance
Wall shearing resistance and anti-seismic performance are substantially improved.
Masonry mortar is only changed to PVA-ECC by embodiment 3, it can be seen that compare the shear-carrying capacity of embodiment 2 and shearing resistance is strong
Degree is substantially improved, limit vertical displacement (4.89mm) and Limiting Level relative displacement (0.09mm) some declines, but on the whole
Due to being substantially improved for shear behavior, the general effect or relative lifting to masonry wall.Compare embodiment 1, embodiment 3 it is each
Item performance declines.
Motar is only changed to high-toughness material by embodiment 4, and as a result as embodiment 3, comparing the performance of embodiment 2 has
Lifted, but it is embodiment 1 to compare, and performance has all declined.
Embodiment 5
Embodiment 5 is distinguished as plastering using with test method same in embodiment 1, test procedure and test test specimen
The composition mass ratio of mortar is water:Cement:Flyash:Quartz sand:Fiber=1:1.8:1.7:1.3:0.068.The shearing resistance for obtaining
Bearing capacity (395kN), limit vertical displacement (6.21mm) and Limiting Level relative displacement (0.97mm) are below embodiment 1 and (smear
Lime and brick adopts high-toughness material), illustrate that the high-toughness material that invention is obtained is very big for masonry wall has for motar
Help.
Embodiment 6
Embodiment 6 is distinguished as building by laying bricks or stones using with test method same in embodiment 1, test procedure and test test specimen
Mortar is traditional cement mortar, and composition mass ratio is water:Cement:Sea sand=1-3:1:1.375.The composition mass ratio of motar
For water:Cement:Flyash:Quartz sand:Fiber=1:1.8:1.7:1.3:0.068.Shear-carrying capacity (310kN), the pole for obtaining
Limit vertical displacement (4.67mm) and Limiting Level relative displacement (0.23mm) are below embodiment 4, and (motar adopts high tenacity
Material), the high-toughness material for obtaining equally is absolutely proved for motar for masonry wall is very helpful.
Described fiber is polyvinyl alcohol series fiber.The preferably Novel polyvinyl alcohols of Japan KURALON K- II series is fine
Dimension;
Described cement is the Portland cements of P.O 42.5;Described flyash is I grade of flyash;Described quartz
Sand is refined 80-100 mesh quartz sands.
The present invention with high shearing resistance and high shock resistance can masonry wall manufacture method used by raw material by commercially available or
Other known approach are obtained, and involved technique is known to those skilled in the art and can grasp.
Unaccomplished matter of the present invention is known technology.
Claims (4)
1. it is a kind of with high shearing resistance and high shock resistance can masonry wall manufacture method, it is characterized by the method includes following step
Suddenly:
1)Brick test block is poured with water logging;
2)Prepare polyvinyl alcohol fiber reinforced cement based composites (abbreviation PVA-ECC);
3)Brick is taken out, with PVA-ECC as masonry mortar, is built by laying bricks or stones using " 31 " masonry method, wherein, the width of brickwork joint
For 9-11mm;
4) build by laying bricks or stones the two sides of body of wall is plastered after completing 5 ~ 7 hours, in 13-17mm, motar is the thickness per face
High-toughness material;
Wherein, described high-toughness material is obtained by the proportioning of following material, wherein, quality compares water:Binder Materials:Quartz sand:
Fiber=1:2.44:0.8-1:0.038, wherein Binder Materials is concrete and coal ash, and flyash accounts for the 40%- of binder total amount
50%;
5)Daily watering maintenance is carried out to body of wall in 7 days after plastering, conserved under outdoor environmental conditions afterwards to 28 day age i.e.
Obtain masonry wall;
Described fiber is polyvinyl alcohol series fiber.
2. there is as claimed in claim 1 the manufacture method of the masonry wall of high shearing resistance and high shock resistance energy, it is characterized by described
Cement be the Portland cements of P.O 42.5;Described flyash is I grade of flyash;Described quartz sand is refined 80-
100 mesh quartz sands.
3. there is as claimed in claim 1 the manufacture method of the masonry wall of high shearing resistance and high shock resistance energy, it is characterized by described
Fiber be the serial fiber of the Novel polyvinyl alcohols of Japan KURALON K- II.
4. there is as claimed in claim 1 the manufacture method of the masonry wall of high shearing resistance and high shock resistance energy, it is characterized by described
High-toughness material preparation method, comprise the following steps:
1. raw material is weighed according to the above ratio;
2. load weighted cement, flyash and quartz sand are put into into dry mixing 3 to 5 minutes in agitated kettle, the rotating speed of agitated kettle is 30-
The speed of 50 turns/min;
3. water is subsequently adding, is stirred 4 to 6 minutes;
4. PVA fibers are finally placed into, the rotating speed for adjusting agitated kettle is that 50-70 turns the/speed of min, wet-mixing 5 to 7 minutes, extremely
PVA fibers are uniformly dispersed, and finally obtain high-toughness material.
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CN110748036A (en) * | 2019-11-18 | 2020-02-04 | 江苏韧强建筑科技有限公司 | High-toughness bionic masonry wall built by 3D printing technology and building method thereof |
CN111549937A (en) * | 2020-04-10 | 2020-08-18 | 哈尔滨工业大学 | Environment-friendly high-ductility heat-preservation heat-insulation combined masonry wall structure and construction method thereof |
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