CN111548074A - Rammed earth wall formula and preparation method thereof - Google Patents
Rammed earth wall formula and preparation method thereof Download PDFInfo
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- CN111548074A CN111548074A CN202010509045.7A CN202010509045A CN111548074A CN 111548074 A CN111548074 A CN 111548074A CN 202010509045 A CN202010509045 A CN 202010509045A CN 111548074 A CN111548074 A CN 111548074A
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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
- C04B28/001—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 unburned clay
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- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a rammed earth wall formula which comprises raw earth, stones, sand, lime, rubble, water and polypropylene fibers, wherein the components in parts by weight are as follows: 70-700 parts of raw soil, 60-600 parts of stones, 5-50 parts of sand, 2-10 parts of lime, 2-10 parts of rubble, 10-60 parts of water and 1-5 parts of polypropylene fibers. The formula of the rammed earth wall greatly improves the strength, durability, integrity, compactness, cracking resistance and the like of the rammed earth wall body on the premise of ensuring that the original traditional rammed earth wall material is kept, prolongs the service life of rammed earth buildings, and can obtain greater economic benefit.
Description
Technical Field
The invention relates to a rammed earth wall formula and a preparation method thereof.
Background
The rammed earth building is a building which is constructed by ramming undisturbed raw earth layer by using tools such as stones or wooden hammers and the like. For rammed earth buildings, the construction method has the characteristics of low cost, energy conservation, environmental protection, good heat insulation performance, convenient construction, available local materials, recyclable wall materials, comfortable living and the like, and is still widely applied to partial rural areas in China. However, in the case of selecting the traditional rammed earth wall material, many problems and defects exist, such as the self-defect of the rammed earth material, the large randomness of selecting the rammed earth wall material, and the like. For the rammed earth wall, the mechanical property of the rammed earth wall is influenced by the factors such as the self particle composition, chemical components, physical properties and the like of the used earth body, the self material strength of the earth body is low, the compacted earth body is only about 1/20-1/10 of the strength of C20 concrete, the compacted earth body is a brittle material under a dry condition, the compacted earth body is basically free of ductility and signs of damage, and the durability of the earth body material is poor; in the construction process, if workers use some improper raw soil to tamp the wall or the proportion of selected material components is improper, the rammed soil wall can be directly damaged in use.
In order to improve and solve the various problems and defects of the conventional rammed earth wall, the conventional ramming method and tools need to be improved, and the rammed earth wall needs to be optimized and improved in terms of material component ratio. The addition of stones and rubbles in proper proportion can increase the ramming strength of the wall body and stabilize the structure of the wall body, and the rubbles belong to construction wastes, can be obtained from local materials, have high cost performance, and can increase the content of stones at the lower part of the wall body and reduce the rubbles during ramming; the content of rubbles on the upper part of the wall body is more, and stones are less, so that the rammed earth wall body is in a 'light-top-heavy-bottom' state, the integral bearing of the rammed earth wall is reduced, the lower wall body is more stable during ramming, and the rammed earth wall is beneficial to earthquake resistance. The addition of the polypropylene fibers in a proper proportion can improve the durability of the wall body, when the rammed earth wall body is subjected to rain wash for a long time, loose soil layers on the surface of the wall body are firstly peeled off, so that the polypropylene fibers are densely exposed on the wall surface like 'Chinese alpine rush' and 'rain cape', further rain wash and erosion can be prevented, and the durability of the rammed earth wall body is greatly improved; the addition of lime and sand in proper proportion can improve the compactness and later strength of the wall.
Disclosure of Invention
The invention improves the problems, namely the technical problems to be solved by the invention are that the traditional rammed earth wall is single in material, low in strength, poor in durability and easy to crack.
The invention is formed in this way, it includes the raw soil, the stone, the sand, the lime, the rubble, the water and the polypropylene fiber, the weight component of each component is: 70-700 parts of raw soil, 60-600 parts of stones, 5-50 parts of sand, 2-10 parts of lime, 2-10 parts of rubble, 10-60 parts of water and 1-5 parts of polypropylene fibers.
Further, the raw soil is common clay.
Further, the stones are suitably graded crushed stones.
Furthermore, the main component of the lime is calcium carbonate.
Further, the length of the polypropylene fiber is 30-70 mm.
Further, the preparation method of the rammed earth wall comprises the following steps: (1) weighing raw soil, stones, sand, lime, rubble, water and polypropylene fiber, wherein the weight components of the raw soil are as follows: 70-700 parts of raw soil, 60-600 parts of stones, 5-50 parts of sand, 2-10 parts of lime, 2-10 parts of rubble, 10-60 parts of water and 1-5 parts of polypropylene fibers; (2) mixing raw soil, stones, sand, lime, rubble and polypropylene fiber, and uniformly mixing the components by a stirrer; (3) adding water into the mixed material obtained in the step (2), and stirring to uniformly mix the water and the mixed material to obtain the rammed earth wall formula; (4) and (4) directly putting the mixed material obtained in the step (3) into a mould after being stirred and formed to be tamped into a wall.
Further, the stirring time in the step (2) is 2-5 minutes.
Further, the stirring time in the step (3) is 5-8 minutes.
Compared with the prior art, the invention has the following beneficial effects: the formula of the rammed earth wall greatly improves the strength, durability, integrity, compactness, cracking resistance and the like of the rammed earth wall body on the premise of ensuring that the original traditional rammed earth wall material is kept, prolongs the service life of rammed earth buildings, and can obtain greater economic benefit.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
Example (b): the rammed earth wall formula comprises raw earth, stones, sand, lime, rubble, water and polypropylene fibers, and the rammed earth wall formula comprises the following components in parts by weight: 70-700 parts of raw soil, 60-600 parts of stones, 5-50 parts of sand, 2-10 parts of lime, 2-10 parts of rubble, 10-60 parts of water and 1-5 parts of polypropylene fibers.
In this embodiment, the raw soil is ordinary clay.
In this embodiment, the stones are suitably graded crushed stones.
In this embodiment, the main component of the lime is calcium carbonate.
In this embodiment, the polypropylene fiber has a length of 30 to 70 mm.
In this embodiment, the method for preparing the rammed earth wall includes the following steps: (1) weighing raw soil, stones, sand, lime, rubble, water and polypropylene fiber, wherein the weight components of the raw soil are as follows: 70-700 parts of raw soil, 60-600 parts of stones, 5-50 parts of sand, 2-10 parts of lime, 2-10 parts of rubble, 10-60 parts of water and 1-5 parts of polypropylene fibers; (2) mixing raw soil, stones, sand, lime, rubble and polypropylene fiber, and uniformly mixing the components by a stirrer; (3) adding water into the mixed material obtained in the step (2), and stirring to uniformly mix the water and the mixed material to obtain the rammed earth wall formula; (4) and (4) directly putting the mixed material obtained in the step (3) into a mould after being stirred and formed to be tamped into a wall.
In this example, the stirring time in step (2) was 2 to 5 minutes.
In this example, the stirring time in step (3) was 5 to 8 minutes.
Example 2: based on example 1, the contents of the components in the rammed earth wall formulation can be preferably as follows: 140 parts of raw soil, 120 parts of stones, 10 parts of sand, 5 parts of lime, 5 parts of rubble, 20 parts of water and 2 parts of polypropylene fiber; wherein, the raw soil is common clay, the pebble is 10mm of continuous graded broken stone, the length of the FERRO fiber is 40mm, and the rubble can be obtained from local materials.
Preferably, the preparation method of the rammed earth wall formula comprises the following steps:
(1) weighing 140 parts of raw soil, 120 parts of stones, 10 parts of sand, 5 parts of lime, 5 parts of rubbles, 20 parts of water and 2 parts of polypropylene fibers;
(2) mixing raw soil, pebbles, sand, rubble, lime and polypropylene fibers, putting into a stirrer, and stirring for 3 min; if the fiber agglomeration phenomenon occurs after the stirring is finished, the stirring can be continued for 1min or the fiber is completely dispersed; adding water into the mixed material obtained in the step (2), stirring for 5min, and directly putting the mixed material into a mould after stirring and molding to be tamped into a wall;
(3) if stones with larger grain sizes are doped in raw soil in the trial preparation process, the stones can be removed through manual screening, and the equal-volume soil is doped again.
Example 3: preferably, the contents of the components in the rammed earth wall formula by weight can be as follows: 280 parts of raw soil, 240 parts of stones, 20 parts of sand, 8 parts of lime, 10 parts of rubble, 40 parts of water and 4 parts of polypropylene fiber; wherein, the raw soil is common clay, the pebble is 10mm of continuous graded broken stone, the length of the FERRO fiber is 40mm, and the rubble can be obtained from local materials.
Preferably, the preparation method of the rammed earth wall formula comprises the following steps:
(4) weighing 140 parts of raw soil, 120 parts of stones, 10 parts of sand, 5 parts of lime, 5 parts of rubbles, 20 parts of water and 2 parts of polypropylene fibers;
(5) mixing raw soil, pebbles, sand, rubble, lime and polypropylene fibers, putting into a stirrer, and stirring for 3 min; if the fiber agglomeration phenomenon occurs after the stirring is finished, the stirring can be continued for 1min or the fiber is completely dispersed; adding water into the mixed material obtained in the step (2), stirring for 5min, and directly putting the mixed material into a mould after stirring and molding to be tamped into a wall;
(6) if stones with larger grain sizes are doped in raw soil in the trial preparation process, the stones can be removed through manual screening, and the equal-volume soil is doped again.
Researches show that by adding stones, sand, lime, FERRO fibers (polypropylene fibers) and rubbles into the traditional rammed earth wall material in a proper proportion, the ramming strength, the anti-cracking performance and the durability of the wall body under natural conditions can be effectively improved, the integrity and the compactness are improved to a certain extent, and the service life of the rammed earth wall body is greatly prolonged, so that the invention can generate greater economic benefits in the field of rammed earth construction. The specific principle is illustrated as follows: the addition of the stones and the rubbles in a proper proportion can enable the wall structure to be more stable, the rubbles belong to building wastes, the materials can be obtained locally, the cost performance is higher, the content of the stones at the lower part of the wall can be more, and the rubbles are less during ramming; the content of rubbles on the upper part of the wall body is more, and stones are less, so that the rammed earth wall body is in a 'light-top-heavy-bottom' state, the integral bearing of the rammed earth wall is reduced, the lower wall body is more stable during ramming, and the rammed earth wall is beneficial to earthquake resistance. The durability of the wall body can be improved by adding the FERRO fibers in a proper proportion, when the rammed earth wall body is subjected to rain wash for a long time, loose soil layers on the surface of the wall body are firstly peeled off, so that the FERRO fibers are exposed on the wall surface densely like 'cattle hair' and 'rain cape', further rain wash and erosion can be prevented, and the durability of the rammed earth wall body is greatly improved; the addition of lime and sand in proper proportion can improve the compactness and later strength of the wall.
Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.
Meanwhile, if the invention as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (8)
1. The rammed earth wall formula is characterized by comprising raw earth, stones, sand, lime, rubble, water and polypropylene fibers, wherein the components in parts by weight are as follows: 70-700 parts of raw soil, 60-600 parts of stones, 5-50 parts of sand, 2-10 parts of lime, 2-10 parts of rubble, 10-60 parts of water and 1-5 parts of polypropylene fibers.
2. The rammed earth wall formulation of claim 1, wherein said raw earth is a conventional clay.
3. The rammed earth wall formulation of claim 1, wherein said stones are suitably graded crushed stone.
4. The rammed earth wall formulation of claim 1, wherein the lime comprises calcium carbonate as a major component.
5. The rammed earth wall formulation of claim 1, wherein said polypropylene fibers have a length of 30-70 mm.
6. The preparation method of the rammed earth wall is characterized by comprising the following steps: (1) weighing raw soil, stones, sand, lime, rubble, water and polypropylene fiber, wherein the weight components of the raw soil are as follows: 70-700 parts of raw soil, 60-600 parts of stones, 5-50 parts of sand, 2-10 parts of lime, 2-10 parts of rubble, 10-60 parts of water and 1-5 parts of polypropylene fibers; (2) mixing raw soil, stones, sand, lime, rubble and polypropylene fiber, and uniformly mixing the components by a stirrer; (3) adding water into the mixed material obtained in the step (2), and stirring to uniformly mix the water and the mixed material to obtain the rammed earth wall formula; (4) and (4) directly putting the mixed material obtained in the step (3) into a mould after being stirred and formed to be tamped into a wall.
7. The method for preparing a rammed earth wall according to claim 6, wherein the stirring time in step (2) is 2-5 minutes.
8. The method for preparing a rammed earth wall according to claim 6, wherein the stirring time in step (3) is 5-8 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010509045.7A CN111548074A (en) | 2020-06-07 | 2020-06-07 | Rammed earth wall formula and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010509045.7A CN111548074A (en) | 2020-06-07 | 2020-06-07 | Rammed earth wall formula and preparation method thereof |
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| CN111548074A true CN111548074A (en) | 2020-08-18 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112209666A (en) * | 2020-10-23 | 2021-01-12 | 河南博鳌石艺建材有限公司 | High-strength high-durability rammed earth wall and preparation method thereof |
| CN113912371A (en) * | 2021-11-18 | 2022-01-11 | 昆明理工泛亚设计集团有限公司 | Anti-cracking waterproof rammed earth wall and construction method thereof |
| CN113998968A (en) * | 2021-02-05 | 2022-02-01 | 四川永存建筑工程有限公司 | Building material for heavy rammed earth wall and preparation method and construction process thereof |
| CN113998967A (en) * | 2021-02-05 | 2022-02-01 | 四川永存建筑工程有限公司 | Rammed earth material for lightweight rammed earth wall and preparation method and application thereof |
| CN114105576A (en) * | 2021-02-05 | 2022-03-01 | 四川永存建筑工程有限公司 | Building material and preparation method and application thereof |
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| KR20140146709A (en) * | 2013-06-17 | 2014-12-29 | 목포대학교산학협력단 | Earth material composition for ramming earth and rammed earth body manufactured by using the same |
| CN109138226A (en) * | 2018-09-18 | 2019-01-04 | 重庆美索新乡土旅游开发有限公司 | A kind of new type colorful loam wall and preparation method 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 |
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2020
- 2020-06-07 CN CN202010509045.7A patent/CN111548074A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140146709A (en) * | 2013-06-17 | 2014-12-29 | 목포대학교산학협력단 | Earth material composition for ramming earth and rammed earth body manufactured by using the same |
| CN109138226A (en) * | 2018-09-18 | 2019-01-04 | 重庆美索新乡土旅游开发有限公司 | A kind of new type colorful loam wall and preparation method 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112209666A (en) * | 2020-10-23 | 2021-01-12 | 河南博鳌石艺建材有限公司 | High-strength high-durability rammed earth wall and preparation method thereof |
| CN113998968A (en) * | 2021-02-05 | 2022-02-01 | 四川永存建筑工程有限公司 | Building material for heavy rammed earth wall and preparation method and construction process thereof |
| CN113998967A (en) * | 2021-02-05 | 2022-02-01 | 四川永存建筑工程有限公司 | Rammed earth material for lightweight rammed earth wall and preparation method and application thereof |
| CN114105576A (en) * | 2021-02-05 | 2022-03-01 | 四川永存建筑工程有限公司 | Building material and preparation method and application thereof |
| CN113912371A (en) * | 2021-11-18 | 2022-01-11 | 昆明理工泛亚设计集团有限公司 | Anti-cracking waterproof rammed earth wall and construction method thereof |
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Application publication date: 20200818 |