CN114773015A - Modified raw soil heat-insulation structure integrated building wall material and preparation method thereof - Google Patents
Modified raw soil heat-insulation structure integrated building wall material and preparation method thereof Download PDFInfo
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- CN114773015A CN114773015A CN202210463368.6A CN202210463368A CN114773015A CN 114773015 A CN114773015 A CN 114773015A CN 202210463368 A CN202210463368 A CN 202210463368A CN 114773015 A CN114773015 A CN 114773015A
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- 239000002689 soil Substances 0.000 title claims abstract description 89
- 239000000463 material Substances 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000009413 insulation Methods 0.000 title claims description 26
- 239000010902 straw Substances 0.000 claims abstract description 51
- 239000010440 gypsum Substances 0.000 claims abstract description 35
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 35
- 239000010881 fly ash Substances 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000002131 composite material Substances 0.000 claims abstract description 4
- 241000209140 Triticum Species 0.000 claims description 22
- 235000021307 Triticum Nutrition 0.000 claims description 22
- 239000012178 vegetable wax Substances 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 9
- 239000012165 plant wax Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 4
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 244000062793 Sorghum vulgare Species 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 235000019713 millet Nutrition 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 239000006227 byproduct Substances 0.000 abstract description 6
- 239000002440 industrial waste Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 10
- 241000196324 Embryophyta Species 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 238000004321 preservation Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000011148 porous material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000000611 regression analysis Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/34—Natural resins, e.g. rosin
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C1/00—Building elements of block or other shape for the construction of parts of buildings
- E04C1/40—Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts
- E04C1/41—Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts composed of insulating material and load-bearing concrete, stone or stone-like material
Abstract
The invention discloses a modified raw soil heat-insulating structure integrated building wall material and a preparation method thereof, belonging to the technical field of buildings. The modified raw soil heat-insulating structure integrated building wall material comprises raw soil, desulfurized gypsum, fly ash and straws. The modified raw soil heat-insulating structure integrated building wall material takes the desulfurized gypsum, industrial wastes and agricultural byproducts as raw materials, and is green and environment-friendly. The modified raw soil heat-insulating structure integrated building wall material provided by the invention is prepared by modifying the mechanical property and the dry-wet cycle property of raw soil by using industrial waste desulfurized gypsum, fly ash and agricultural byproduct straws, and the obtained modified material has good mechanical property and dry-wet cycle property. The modified raw soil heat-insulating structure integrated building wall material adopts various composite straws with different sizes, and obviously improves the mechanical property and the dry-wet cycle performance of the modified raw soil material.
Description
Technical Field
The invention belongs to the technical field of buildings, and particularly relates to a modified raw soil heat-preservation structure integrated building wall material and a preparation method thereof.
Background
The building heat preservation and structure integration technology integrates the heat preservation and heat insulation functions and the enclosure structure functions, and the wall body can meet the requirements of the existing building energy-saving standard without additionally taking heat preservation measures, so that the building energy-saving technology with the same service life as the wall body is realized.
The construction history of using raw soil as a construction material can be traced back to 1 ten thousand years before the yuan. The raw soil buildings have the advantages of indoor humidity adjustment function, good heat storage performance, heat preservation and insulation, recycling, economy, pollution absorption and the like, but have obvious defects in the aspects of physical and mechanical properties, tolerance and the like, and cannot meet the requirements of the existing building heat preservation and structure integration.
Disclosure of Invention
In order to solve the problems, the invention takes raw soil as a base material, and utilizes industrial and agricultural byproducts to modify the raw soil, thereby not only recycling wastes, but also meeting the requirements of the integrated building wall material of the heat-insulating structure.
The invention discloses a modified raw soil heat-insulating structure integrated building wall material which is characterized by comprising raw soil, desulfurized gypsum, fly ash and straws.
In some preferred embodiments of the invention, the straw is composite straw of different sizes.
In some preferred embodiments of the present invention, the length of the straw is selected from one or more of four specifications of 0.5-1.0mm, 2.0-2.5mm, 5.0-8.0mm and 10-15 mm.
In some preferred embodiments of the invention, the straw comprises two specifications of 0.5-1.0mm and 5.0-8.0mm in a weight ratio of 1 (0.5-1.5).
In some preferred embodiments of the invention, the stalks are derived from one or more of wheat, rice and millet stalks.
In some preferred embodiments of the present invention, the composition comprises the following raw materials in parts by weight:
750-850 parts of raw soil, 90-110 parts of desulfurized gypsum, 90-110 parts of fly ash and 3-7 parts of wheat straw by weight, and preferably 0.2-0.8 part of vegetable wax by weight.
In some preferred embodiments of the present invention, the composition comprises the following raw materials in parts by weight:
790 raw soil, 95-105 desulfurized gypsum, 95-105 fly ash and 4-6 wheat straw, wherein the raw soil is in weight portion 810, the desulfurized gypsum is in weight portion 95-105, and the vegetable wax is in weight portion 0.3-0.6.
The second aspect of the invention discloses a preparation method of the modified raw soil insulation structure integrated building wall material without vegetable wax, which comprises the following steps:
s01, mixing raw soil, desulfurized gypsum, fly ash and straws, adding 10-20% by weight of water, mixing and stirring;
and S02, casting or pressing to form the wall member.
In some preferred embodiments of the present invention, the cooling of the obtained unit wall is subjected to regression analysis by the following formula:
T＝a×w2+b×w+c；
wherein T is the indoor average temperature of the room with the modified raw soil wall, w is the thickness of the modified raw soil wall, k1 and k2 are regulating coefficients, k1 is 2-2.5, k21 is 0.7-0.9, m, n and l are the weight content percentages of raw soil, desulfurized gypsum and fly ash respectively, alpha, beta and c are conversion coefficients and are 4-5 multiplied by 10 respectively-7、5-6×10-5And 0.02-0.05.
The third aspect of the invention discloses a preparation method of the modified raw soil insulation structure integrated building wall material containing the vegetable wax, which comprises the following steps:
s11, melting the plant wax, spraying the melted plant wax on the wheat straw while the plant wax is hot, and cooling the wheat straw to room temperature for later use;
s12, mixing the raw soil, the desulfurized gypsum and the fly ash, adding 10-20 wt% of water, mixing and stirring;
and S13, casting or pressing to form the wall member.
The beneficial technical effects of the invention are as follows:
the modified raw soil heat-insulating structure integrated building wall material takes the desulfurized gypsum, industrial waste and agricultural byproducts as raw materials, and is green and environment-friendly.
The modified raw soil heat-insulating structure integrated building wall material provided by the invention is prepared by modifying the mechanical property and the dry-wet cycle property of raw soil by using industrial waste desulfurized gypsum, fly ash and agricultural byproduct straws, and the obtained modified material has good mechanical property and dry-wet cycle property.
The modified raw soil heat-insulating structure integrated building wall material adopts multiple composite straws with different sizes, and obviously improves the mechanical property and the dry-wet cycle performance of the modified raw soil material.
The dry-wet cycle performance of the modified raw soil material is considered to be mainly related to the mineral raw materials in the modified raw soil material, and in the preparation of the modified raw soil insulation structure integrated building wall material, the influence of different plant straws and the content of the plant straws on the dry-wet cycle performance of the modified material is unexpectedly discovered, and the influence is discovered through further research and is due to the influence of the plant wax component in the straws. Through verification, the addition of a very small amount of vegetable wax can obviously improve the dry-wet cycle performance of the modified material.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
The raw soil is sand clay for construction, and the density is about 2.39 g-cm-3The plastic limit is about 20.5%, the liquid limit is about 26.3%, the plasticity index is about 5.6, the main components are silicon dioxide (about 71%) and aluminum oxide (about 15%), the sieve residue weight ratio of sieve pores less than 0.08mm in the particle size distribution is 1.52%, the sieve residue weight ratio of sieve pores less than 0.15-0.25 is 10.13%, and the sieve residue weight ratio of sieve pores less than 0.25-1.7 is 90.15%. The desulfurized gypsum and the fly ash are byproducts of a power plantThe specific surface area of the desulfurized gypsum is 3600cm2G, 0.045mm screen residue about 6%, containing SO3About 45.59%, CaO about 30.82%, and silica about 2.10%; the fly ash is of two stages, and the specific surface area is 3280cm2G, density of about 2.56 g.cm-3. The wheat straw is pulverized dry straw, and comprises four specifications of 0.5-1.0mm (short), 2.0-2.5mm (medium length), 5.0-8.0mm (long) and 10-15mm (super-long).
The experimental procedures used in the following examples and comparative examples are conventional ones unless otherwise specified. Materials, reagents and the like used in the following examples and comparative examples are commercially available unless otherwise specified.
Unless otherwise specified, the examples and comparative examples are parallel tests with the same components, component contents, preparation steps, preparation parameters.
Example 1
Modified raw soil heat-insulation structure integrated building wall material
Comprises 795 parts by weight of raw soil, 100 parts by weight of desulfurized gypsum, 100 parts by weight of fly ash and 5 parts by weight of wheat straw (medium length).
Example 2
Modified raw soil heat-insulation structure integrated building wall material
Comprises 795 parts by weight of raw soil, 100 parts by weight of desulfurized gypsum, 100 parts by weight of fly ash and 5 parts by weight of wheat straw (short).
Example 3
Modified raw soil heat-insulation structure integrated building wall material
Comprises 795 parts by weight of raw soil, 100 parts by weight of desulfurized gypsum, 100 parts by weight of fly ash and 5 parts by weight of wheat straw (long).
Example 4
Modified raw soil heat-insulation structure integrated building wall material
Comprises 795 parts by weight of raw soil, 100 parts by weight of desulfurized gypsum, 100 parts by weight of fly ash and 5 parts by weight of wheat straw (super-long).
Example 5
Modified raw soil heat-insulation structure integrated building wall material
Comprises 795 parts by weight of raw soil, 100 parts by weight of desulfurized gypsum, 100 parts by weight of fly ash and 5 parts by weight of wheat straw (short and medium length, weight ratio 1: 1).
Example 6
Modified raw soil heat-insulation structure integrated building wall material
Comprises 795 parts by weight of raw soil, 100 parts by weight of desulfurized gypsum, 100 parts by weight of fly ash and 5 parts by weight of wheat straw (short and long, weight ratio is 1: 1).
Example 7
Modified raw soil heat-insulation structure integrated building wall material
Comprises 795 parts by weight of raw soil, 100 parts by weight of desulfurized gypsum, 100 parts by weight of fly ash and 5 parts by weight of wheat straw (short and super-long, weight ratio 1: 1).
Example 8
Modified raw soil heat-insulation structure integrated building wall material
Comprises 794.5 parts of raw soil, 100 parts of desulfurized gypsum, 100 parts of fly ash, 5 parts of wheat straw (short and long, weight ratio is 1:1) and 0.5 part of vegetable wax.
Example 9
Modified raw soil heat-insulation structure integrated building wall material
Comprises 794.5 parts of raw soil, 100 parts of desulfurized gypsum, 100 parts of fly ash, 5 parts of wheat straw (short and long, weight ratio is 1:1) and 0.3 part of vegetable wax.
Example 10
Modified raw soil heat-insulation structure integrated building wall material
Comprises 794.9 parts of raw soil, 100 parts of desulfurized gypsum, 100 parts of fly ash, 5 parts of wheat straw (short and long, weight ratio is 1:1) and 0.1 part of vegetable wax.
Example 11
Modified raw soil heat-insulation structure integrated building wall material
The difference from example 1 is that the obtained cooling of the unit wall was subjected to regression analysis by the following formula:
T＝a×w2+b×w+c；
wherein T is the indoor average temperature of the room with the modified raw soil wall, w is the thickness of the modified raw soil wall, k1 and k2 are regulating coefficients, k1 is 2-2.5, k21 is 0.7-0.9, m, n and l are the weight content percentages of raw soil, desulfurized gypsum and fly ash respectively, alpha, beta and c are conversion coefficients and are 4-5 multiplied by 10 respectively-7、5-6×10-5And 0.02-0.05. (the above coefficients are engineering empirical values, and do not consider dimension problems between different parameters).
The estimation of the cooling performance of the unit wall body of the modified raw soil material obtained by the weight percentage ratio of the raw soil, the desulfurized gypsum and the fly ash in the embodiment has small deviation from an actual measured value and high precision, and can be well used for estimating the performance of the obtained wall body in advance and designing the component content.
Comparative example 1
Modified raw soil heat-insulation structure integrated building wall material
Comprises 800 weight portions of raw soil, 100 weight portions of desulfurized gypsum and 100 weight portions of fly ash.
Experimental examples Performance testing of modified raw soil
Taking the materials of the examples and the comparative examples, adding water according to the weight ratio of 15%, mixing and stirring evenly. In examples 8 and 9, vegetable wax was melted, sprayed on wheat straw while hot, cooled to room temperature, and then mixed with the other ingredients. Pressing and forming under 30KN, naturally curing at room temperature,
the results of 7day breaking strength and 7day compressive strength were measured according to GB/T9776-2008 (building Gypsum), and are shown in Table 1.
The freeze-thaw cycle test was performed according to the conventional method with the number of dry-wet cycles counted based on the onset of significant surface damage, the results are shown in table 2.
TABLE 1 Effect on mechanical Properties
In the same column of data, different lower case letters represent significant differences, and P is less than 0.05
The results show that the dry-wet cycle performance of examples 1-10 is superior to that of comparative example 1, indicating that the mechanical properties of the modified raw soil material are significantly affected by adding the plant straw. The superior dry-wet cycle performance of examples 5-7 over examples 1-4 indicates that mixed plant straw of different sizes is more favorable to improve the mechanical properties of the modified raw soil material than single scale plant straw, with example 6 again being the best. The modified raw soil materials of examples 8-10 did not differ significantly in mechanical properties compared to example 6.
TABLE 2 Effect on Dry and Wet cycle Performance
In the same column of data, different lower case letters represent significant differences, and P is less than 0.05
The results show that the dry-wet cycle performance of examples 1-9 is superior to that of comparative example 1, indicating that the addition of plant straw has a significant effect on the modified raw soil material. Examples 5-7 are not significantly different from examples 1-4, indicating that plant stalks of different sizes have little effect on the dry-wet cycle performance. The dry-wet cycle performance of examples 8 and 9 are superior to examples 1-7 and 10, indicating the unexpected effect of adding very small amounts of vegetable wax on the dry-wet cycle performance of the modified raw soil material, and this effect is related to its content.
In addition, the researchers of this patent also found no significant difference between experimental examples 8-10 and examples 1-9 on the effect of adding very small amounts of vegetable wax on the freeze-thaw cycle performance of the modified raw soil material, which further indicates the specificity of the effect of vegetable wax on the dry-wet cycle performance. Meanwhile, in the preparation method, the plant wax is heated and sprayed on the raw soil, and then is mixed with the desulfurized gypsum, the fly ash and the plant straws, so that the dry-wet cycle performance of the obtained modified raw soil is obviously poor, and the combined action of the plant wax and the plant straws is shown. In the next work, further studies of the mechanism of action will be attempted.
While the preferred embodiments and examples of the present invention have been described in detail, the present invention is not limited to the embodiments and examples, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. A modified raw soil heat-insulating structure integrated building wall material is characterized by comprising raw soil, desulfurized gypsum, fly ash and straws.
2. The modified raw soil thermal insulation structure integrated building wall material as claimed in claim 1, wherein the straw is composite straw with different sizes.
3. The modified raw soil insulation structure integrated building wall material according to claim 1, wherein the length of the straw is selected from one or more of four specifications of 0.5-1.0mm, 2.0-2.5mm, 5.0-8.0mm and 10-15 mm.
4. The modified raw soil insulation structure integrated building wall material as claimed in claim 3, wherein the straw comprises two specifications of 0.5-1.0mm and 5.0-8.0mm in weight ratio of 1 (0.5-1.5).
5. The modified raw soil insulation structure integrated building wall material according to claim 1 or 2, wherein the straw is derived from one or more of wheat straw, rice straw and millet straw.
6. The modified raw soil heat-insulating structure integrated building wall material as claimed in claim 1 or 2, which is characterized by comprising the following raw materials in parts by weight:
750-850 parts of raw soil, 90-110 parts of desulfurized gypsum, 90-110 parts of fly ash and 3-7 parts of wheat straw.
7. The modified raw soil insulation structure integrated building wall material as claimed in claim 5, further comprising 0.2-0.8 parts by weight of vegetable wax.
8. The modified raw soil heat-insulating structure integrated building wall material as claimed in claim 5, which is characterized by comprising the following raw materials in parts by weight:
790 raw soil, 95-105 desulfurized gypsum, 95-105 fly ash and 4-6 wheat straw, wherein the raw soil is in weight portion 810, the desulfurized gypsum is in weight portion 95-105, and the vegetable wax is in weight portion 0.3-0.6.
9. The preparation method of the modified raw soil thermal insulation structure integrated building wall material according to any one of claims 1 to 6, characterized by comprising the following steps:
s01, mixing raw soil, desulfurized gypsum, fly ash and straw, adding 10-20 wt% of water, mixing and stirring;
and S02, casting or pressing to form the wall member.
10. The preparation method of the modified raw soil thermal insulation structure integrated building wall material according to claim 7 or 8, characterized by comprising the following steps:
s11, melting the plant wax, spraying the melted plant wax on the wheat straw while the plant wax is hot, and cooling the wheat straw to room temperature for later use;
s12, mixing the raw soil, the desulfurized gypsum and the fly ash, adding 10-20 wt% of water, mixing and stirring;
and S13, casting or pressing to form the wall member.
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| CN116535183A (en) * | 2023-05-06 | 2023-08-04 | 西安建筑科技大学 | Straw-based light building composite material and preparation and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116535183A (en) * | 2023-05-06 | 2023-08-04 | 西安建筑科技大学 | Straw-based light building composite material and preparation and application thereof |
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Application publication date: 20220722 |