CN107285692A - A kind of preparation method of high-performance composite earth building materials - Google Patents
A kind of preparation method of high-performance composite earth building materials Download PDFInfo
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- CN107285692A CN107285692A CN201610205886.2A CN201610205886A CN107285692A CN 107285692 A CN107285692 A CN 107285692A CN 201610205886 A CN201610205886 A CN 201610205886A CN 107285692 A CN107285692 A CN 107285692A
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- building materials
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- composite earth
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
It is that, using the raw-soil as base material, admixture is polypropylene fibre, silica flour, oyster shell whiting, lime, flyash, cement, rubble or cobble, zeolite powder, sand the invention discloses a kind of preparation method of high-performance composite earth building materials.Admixture constituent mass percentage is lime 1.5 8%, cement 5 16%, polypropylene fibre 0.1 2%, oyster shell whiting 0.2 1.5%, silica flour 0 4%, flyash 0 8%, rubble or cobble 3 10%, zeolite powder 1 3%, sand 2 6%.Composite earth building materials can be conserved after being molded ramming shaping, curing time 28 days or so.The composite earth building materials intensity made using this preparation method is significantly improved, can be applied to building in building block, wall, blinding layer, pattern foundation pit supporting structure, it can also be applied to hydraulic engineering, railway, highway construction and municipal works, and the field such as agricultural and rehabilitating historic building, be conducive to the recycling of spoir.
Description
Technical field refers in particular to a kind of high-performance composite earth environmental protection and built the invention belongs to regenerated resources field of comprehensive utilization
The preparation method of material.
Background technology China generates a large amount of spoirs and is difficult to dispose, one recently as the fast development of development ＆ construction
A little big and medium-sized cities produce spoir besieged city phenomenon, pollute environment, and some mounds also turn into potential safety hazard.Therefore how spoir is realized
Recycling turns into the problem of China's town and country Green Development, harmonious development need urgent solve.These spoirs, it is particularly all kinds of
Most of earthwork that the excavation of foundation pit of civil engineering, traffic engineering, hydraulic engineering etc. is produced all is the raw-soil.Profit on the raw-soil
With having very long history in China, it is all useful to save existing some ancient buildings, old countries in Shaanxi, Shanxi, Fujian, Guangdong etc.
The Gu Qiang of raw-soil construction, ancient room.Earth building is also taken seriously abroad in recent years, due to earth building reduce reinforcing bar, cement,
The consumption of the energy, thus it is seen as the important content of green building.But there is also some shortcomings, such as tensile strength for raw soil building material
Relatively low with compressive property, unconfined compressive strength is less than 1MPa, and water-resistant capacity is poor, is also easy to produce moderate finite deformation etc., which has limited
The application of raw soil building material.The purpose of the present invention is to improve the performance indications such as intensity of raw soil building material, abandoned in particular with the raw-soil
Soil exploitation the high-performance composite earth containing multiple additives, this composite earth can be widely applied to building in building block, wall,
Blinding layer, pattern foundation pit supporting structure, can also be applied to hydraulic engineering, railway, highway construction and municipal works, agricultural and rehabilitating historic building
Deng field.
A kind of preparation method of high-performance composite earth building materials of the content of the invention, including raw material optimum option, material mix proportion
It is determined that, mixture, compaction moulding, maintenance.Raw material are using the raw-soil as base material, the preferred polypropylene fibre of admixture, flyash, silica flour,
Oyster shell whiting, lime, cement, rubble or cobble, zeolite powder, sand.
The source material mixture ratio table of table 1
Optimum moisture content control is in 14-16% in composite earth, and to improve composite earth intensity, mixing water uses magnetized water, pH
More than 4.5, chloride ion content is no more than 500mg/l.First the raw-soil is air-dried during making, smashs to pieces, sieve, gone out more than 2mm
Grain, drying soil, polypropylene fibre, silica flour, oyster shell whiting, lime, cement, rubble or cobble, zeolite are weighed according to formula respectively
Powder, pours into agitator mechanical agitation or manually mixes and stirs uniform, and the water stirring needed for being eventually adding is until each composition material
It is mixed evenly, adds water as magnetic treatment running water, the magnetic field intensity 0.3-0.5T of magnetized water.Composite earth building materials through be molded ramming into
It can be conserved after type, curing time 28 days or so.
Embodiment
1st, compound soil sample is made
1.1 it is prepared by composite earth test block
The soil sample after drying, pulverizing is crossed into 2mm sieves first, drying soil, polypropylene fibre, silicon is weighed respectively according to formula
Powder, oyster shell whiting, lime, cement, rubble or cobble, zeolite powder, pour into mechanical agitation in agitator and uniformly, are eventually adding required
Water stirring until each composition material be mixed evenly, then start to prepare sample.The test cube of unconfined compressive strength.
Size is 70.7mmX70.7mmX70.7mm.3 layers of sample point loads in die trial, and every layer of charging thickness is roughly equal, often fills one layer
Hand ramming, is uniformly carried out when plugging and pounding from edge to center convolution direction, while artificial vibration is carried out, until there is bubble on face
Untill, at the top of die trial unnecessary sample answer it is slightly higher go out die trial top surface, it is floating with spatula after after its 2h condensations, cover glass or material
Expect film, prevent excessive water from evaporating.Moisture content 14.5%, sample compactness 95%, makes and interior is immediately placed in after test block
Dark stuffy place's maintenance, temperature is generally (20 ± 3) DEG C.Demoulding time can determine according to intensity of test block, generally 1~2d,
24h must not be less than, during the demoulding, test cube surface should be repaired, the excessive and off size requirement of surface hole defect is rejected, then
It is fitted into close in two layers of plastic bag and puts back at maintenance, is tested to being taken out during 28 days regulation ages.Make test specimen 3, test specimen
Intensity is averaged.
The cement performance indexs of 2 P.O of table 42.5
The lime Ca (OH) of table 32Analyze pure impurity highest content
The polypropylene fibre physics characteristic index of table 4
The silica flour chemical composition of table 5
The zeolite powder main component of table 6
| Composition | Solvable silicon | Soluble aluminum | Al2O3 | Fe2O3 | SiO2 |
| Content (%) | 8 | 8 | 18 | 8.92 | 65 |
1.2 compound soil sample match ratios
Silty clay and admixture polypropylene fibre, silica flour, oyster shell whiting, lime, cement, rubble, zeolite powder coordinate such as
Shown in table 7.
Table 7 is combined soil sample match ratio table
1.3 maintenance
After test specimen is carried out, it is placed in composite earth curing box and conserves to the time as defined in 28 days.
1.4 unconfined compression strength test
The previous day is tested, test specimen is taken out from curing box, is immersed in the water, test specimen is put on testing machine lifting platform and carried out
Resistance to compression is determined, and test specimen rate of deformation keeps being about 5mm/min, maximum pressure F and stress-strain during testing machine record test specimen destruction
Curve.Unconfined compressive strength reaches 4.59MPa.
2nd, compound cob wall is made
Manufacturing process steps include raw material optimum option, material mix proportion determine and pre-treatment, mixture, foundation excavation,
Building shaping, maintenance.
The raw material laterite that 2.1 compound cob wall raw materials are selected is certain building foundation pit laterite, the depth that fetches earth 7m, admixture difference
For polypropylene fibre, flyash, silica flour, oyster shell whiting, lime, cement, cobble, zeolite powder, sand.Laterite composition is as shown in table 8, powder
As shown in table 9, the performance indications of remaining admixture are referring to table 2, table 3, table 4, table 5, table 6 for coal ash main component.
2.2 compound cob wall material fiting ratios and dispensing
Compound cob wall raw material blending ratio is as shown in table 8.
Table 8 is combined the blending of cob wall raw material and compares table
The admaic earth Main physical property of table 8
The flyash primary chemical of table 9 constitutes %
| SiO2 | Al2O3 | Fe2O3.FeO | CaO | MgO | SO3 | Loss on ignition |
| 48.75 | 21.61 | 9.8 | 6.15 | 2.16 | 2.58 | 4.66 |
2.3 compound cob walls make
Cob wall height 3m, width 3m, lower width 0.4m, the upper width 0.3m of processing and fabricating, cob wall is in below ground
Partial depth 0.4m, foundation excavation 0.6m is wide, depth 0.4m.Made using template ramming composite earth, stencil design is to traditional mould
Tool improved, greatly improve the strength and stiffness of template, can be indeformable in multiplicating is rammed, and transport,
Carrying portable during use, is easily assembled and dismantles.Template is pressed from both sides bamboo clappers by bolt, Bolted angle connection is formed.
2.4 compound cob wall building techniques
1) building method is first quickly rammed one time using tamping tool, and then compacting is rammed twice at a slow speed, pays special attention to wall
Corner needs compacting.Building order：The inside after first peripheral, first surrounding rear center rams into three-back-shaped from outside to inside.When ramming, ram
Guarantee is continuous between point, do not leak rammer.After the completion of one layer of building, tamping tool is tilted, beaten using hammer ram corners on rammed earth surface
Go out pit, with cohering between two layers of rammed earth above and below guarantee.
2) loam wall, which should be layered, staggeredly hands over circle building, it is to avoid Vertical Cracks occur；Corner should use L-shaped or T-shaped template
Building, strengthens the connection in corner.
3) when template is dismantled, first loosen and take out and socket screw rod, then by template is against rammed earth wall and laterally pushes away, with guarantor
Demonstrate,prove template not clay or partially damaged.
4) after template dismounting, inclined-plane should be shoveled into wall end, so that the loam wall of front and rear building can be tightly combined, such as
Fruit interval time is longer, building after preferably shoveling into inclined-plane again in building and should watering.
5) after template dismounting, the rugged place in cob wall side is repaired, it is floating with earth material.
6) detail operating is that wall corner adds small wooden triangular plate on the inside of template, makes corner be formed after building
Angle, can effectively reduce the stress concentration in corner.
Optimum moisture content control is mixed 15% using the treated water in the magnetic field Jing Guo 0.5T field strength with other raw material
Close.
Building instrument is mainly Pneumatic tamping machine and hammer ram of processed transformation etc..Aid has air compressor, skin
Pipe, pneumatics valve, larynx card etc..
Pneumatic tamping machine has welded one using compressed air as power making motor spindle firm by ramming
100mmX100mmX20mm steel plate, frequency fast the characteristics of big with impulsive force.To avoid the impact of tamping tool during building cob wall
Power is excessive to cause the unstable and damage of soil body of template, rams Stress control in 0.5MPa or so to cob wall, passes through and adjust empty
The pneumatics valve of air compressor requires to meet this.
2.6 test test blocks make
Method is just the same with making compound cob wall material therefor, and the test cube size of unconfined compressive strength is
70.7mmX70.7mmX70.7mm, preparation method is with reference to foregoing soil sample manufacturing process.Test block three is made, test intensity data takes
Average value.
2.7 maintenance
After compound cob wall is carried out, conserved under nature to the time as defined in 28 days.The sample natural shape of plastic bag packaging
State is conserved.
2.8 unconfined compression strength test
Test specimen is put into progress resistance to compression measure on testing machine lifting platform, test specimen rate of deformation keeps being about 5mm/min, experiment
Maximum pressure F and load-deformation curve, measure sample unconfined compressive strength and reach 5.32MPa during machine record test specimen destruction.
Claims (4)
1. a kind of preparation method of high-performance composite earth building materials, its technical characteristic is that composition is that, using the raw-soil as base material, admixture is
Polypropylene fibre, silica flour, oyster shell whiting, lime, flyash, cement, rubble or cobble, zeolite powder, sand.
2. a kind of preparation method of the high-performance composite earth building materials proposed according to claim 1, its technical characteristic is admixture group
It is lime 1.5-8%, cement 5-16%, polypropylene fibre 0.1-2%, oyster shell whiting 0.2-1.5%, silica flour 0- to divide mass percent
4%, flyash 0-8%, rubble or cobble 3-10%, zeolite powder 1-3%, sand 2-6%.
3. a kind of preparation method of the high-performance composite earth building materials proposed according to claim 1, its technical characteristic is moisture content control
System is in 14-16%.
4. a kind of preparation method of the high-performance composite earth building materials proposed according to claim 1, its technical characteristic is using at magnetic
Manage magnetic field processing of the water of water stirring admixture Jing Guo 0.3-0.5T intensity.
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| CN201610205886.2A CN107285692A (en) | 2016-04-01 | 2016-04-01 | A kind of preparation method of high-performance composite earth building materials |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108484077A (en) * | 2018-04-03 | 2018-09-04 | 内蒙古启原文物古建筑修缮工程有限责任公司 | A kind of ancient building big wood the repairerment wooden crack patching material and its repair technology |
| CN108484047A (en) * | 2018-04-25 | 2018-09-04 | 北京建筑大学 | A kind of raw-soil prefabricated component and preparation method thereof |
| CN108751802A (en) * | 2018-04-25 | 2018-11-06 | 北京建筑大学 | A kind of raw-soil building part and preparation method thereof |
| CN110078447A (en) * | 2019-05-14 | 2019-08-02 | 盈创新材料(苏州)有限公司 | Rammed earth material and its preparation method and application |
| CN111018475A (en) * | 2019-11-25 | 2020-04-17 | 西安建筑科技大学 | High-performance rammed soil cubic test piece and preparation method thereof |
| CN112266206A (en) * | 2020-10-29 | 2021-01-26 | 南京工业大学 | Semi-dry mixing method preparation technology for waste rubber particle reinforced composite soil sample |
| CN113213849A (en) * | 2021-05-24 | 2021-08-06 | 湖南乐德建筑科技有限公司 | Sanhe soil and preparation method and use method thereof |
| CN114934613A (en) * | 2022-05-31 | 2022-08-23 | 西安石油大学 | Assembled ecological building block, assembled ecological energy storage wall and wall construction method |
-
2016
- 2016-04-01 CN CN201610205886.2A patent/CN107285692A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108484077A (en) * | 2018-04-03 | 2018-09-04 | 内蒙古启原文物古建筑修缮工程有限责任公司 | A kind of ancient building big wood the repairerment wooden crack patching material and its repair technology |
| CN108484047A (en) * | 2018-04-25 | 2018-09-04 | 北京建筑大学 | A kind of raw-soil prefabricated component and preparation method thereof |
| CN108751802A (en) * | 2018-04-25 | 2018-11-06 | 北京建筑大学 | A kind of raw-soil building part and preparation method thereof |
| CN108751802B (en) * | 2018-04-25 | 2021-06-22 | 北京建筑大学 | Raw soil rammed part and preparation method thereof |
| CN110078447A (en) * | 2019-05-14 | 2019-08-02 | 盈创新材料(苏州)有限公司 | Rammed earth material and its preparation method and application |
| CN110078447B (en) * | 2019-05-14 | 2021-08-24 | 盈创新材料(苏州)有限公司 | Rammed earth material and preparation method and application thereof |
| CN111018475A (en) * | 2019-11-25 | 2020-04-17 | 西安建筑科技大学 | High-performance rammed soil cubic test piece and preparation method thereof |
| CN112266206A (en) * | 2020-10-29 | 2021-01-26 | 南京工业大学 | Semi-dry mixing method preparation technology for waste rubber particle reinforced composite soil sample |
| CN113213849A (en) * | 2021-05-24 | 2021-08-06 | 湖南乐德建筑科技有限公司 | Sanhe soil and preparation method and use method thereof |
| CN114934613A (en) * | 2022-05-31 | 2022-08-23 | 西安石油大学 | Assembled ecological building block, assembled ecological energy storage wall and wall construction method |
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Application publication date: 20171024 |