CN110256036A - A kind of physical simulation experimental material and preparation method thereof - Google Patents

A kind of physical simulation experimental material and preparation method thereof Download PDF

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Publication number
CN110256036A
CN110256036A CN201910555487.2A CN201910555487A CN110256036A CN 110256036 A CN110256036 A CN 110256036A CN 201910555487 A CN201910555487 A CN 201910555487A CN 110256036 A CN110256036 A CN 110256036A
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waterglass
test specimen
parts
river sand
starch
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CN110256036B (en
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张�杰
蔡维山
蔡宝山
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Xian University of Science and Technology
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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
    • C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26—Silicates of the alkali metals
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

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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)
  • Revetment (AREA)

Abstract

The invention discloses a kind of physical simulation experimental material, physical simulation experimental material is mainly prepared from the following materials according to parts by weight: 100 parts of river sand, 6-10 parts of cement, 2-6 parts of waterglass and 2-6 parts of starch.The invention also discloses a kind of preparation methods of physical simulation experimental material.The features such as overlying rock spontaneous caving when analog material of the invention has controllable physical and mechanical property, analog seam mining, simulation similarity is high, manufacture craft is simple, curing time is short, raw material sources are wide, environmentally friendly and at low cost.

Description

A kind of physical simulation experimental material and preparation method thereof
Technical field
The invention belongs to coal mining technology fields, are specifically related to a kind of calculating side of roadway floor release groove width Method.
Background technique
Analog simulation test have the characteristics that research cycle is short, at low cost, achievement is visual in image, can to influence factor into Row replicate analysis is the important means of coal mining desk research.Rock stratum of analog simulation test during seam mining is moved In the research of dynamic and Overburden Failure Law, oneself obtains wide application.Analog simulation test in cast material be with prototype power The similar material of property is learned, model made of relationship is laid with by a certain percentage, it has the entirely or essentially feature of prototype structure. The selection of analog material has a significant impact with the physico-mechanical properties for comparing cast material, rises to the success or not of model test Decisive role.It is mostly that cement, gypsum, chalk powder are composed that reality, which tests indoor analog material, analog material intensity Higher, overlying rock is difficult to spontaneous caving when being difficult to simulate soft stratum and simulate in test seam mining, it is therefore desirable to one Kind can simulate soft stratum analog material.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art described above, a kind of physical simulation experiment material is provided Material, overlying rock spontaneous caving when this analog material has controllable physical and mechanical property, analog seam mining, simulates similarity High, the features such as manufacture craft is simple, curing time is short, raw material sources are wide, environmentally friendly and at low cost.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of physical simulation experimental material, feature Be: the physical simulation experimental material is mainly prepared from the following materials according to parts by weight: 100 parts of river sand, water 6-10 parts of mud, 2-6 parts of waterglass and 2-6 parts of starch.
Above-mentioned a kind of physical simulation experimental material, it is characterised in that: the partial size≤0.8mm and gradation of the river sand Uniformly.
Above-mentioned a kind of physical simulation experimental material, it is characterised in that: the cement is No. 525 high-quality grey silicic acid Salt cement.
Above-mentioned a kind of physical simulation experimental material, it is characterised in that: the starch is potato starch.
Above-mentioned a kind of physical simulation experimental material, it is characterised in that: the waterglass is the water glass that modulus is 2.5 Glass.
The invention also discloses a kind of preparation methods of above-mentioned physical simulation experimental material, it is characterised in that: including Following steps:
Step 1: the stainless steel sieve using different model screens out river sand by required diameter grain；
Step 2: weighing river sand, cement, waterglass and starch respectively according to weight using electronic scale；
Step 3: river sand weighed in step 2, cement and starch are placed in container or stirrer for mixing and stirred It mixes uniformly；
Step 4: waterglass and suitable water is added according to weight in the material stirred evenly into step 3, Then it is sufficiently stirred either manually or by blender；
Step 5: by step 4 stir after material is fitted into standard rock sample mold, then pass through hand punning at Test specimen or mechanical ramming are at test specimen；
Step 6: being demoulded after the test specimen for consolidating or being compacted in step 5 is stood 1min, by the test specimen after demoulding in room Temperature lower maintenance 7 days.
Compared with the prior art, the present invention has the following advantages:
1, the present invention replaces original cement, chalk powder and gypsum etc. as cementing agent using cement and waterglass and is used as glue Agent is tied, the spontaneous caving of overlying rock when intensity can simulate seam mining in soft stratum and test well.
2, the present invention can be changed by cement proportion, change the physical mechanics property of test specimen, for simulating phase compared with soft stratum It is high like degree.
3, the manufacture craft of test specimen of the present invention is simple, curing time is short.
4, the raw material environmental protection of test specimen production of the present invention, source are wide, at low cost.
Below by drawings and examples, the present invention is described in further detail.
Detailed description of the invention
Fig. 1 is the stress and strain curve graph of test specimen of the present invention.
Description of symbols:
The test specimen stress and strain curve of 2-3-embodiment 2；
The test specimen stress and strain curve of 3-1-embodiment 3；
The test specimen stress and strain curve of 5-3-embodiment 5；
The test specimen stress and strain curve of 6-2-embodiment 6；
The test specimen stress and strain curve of 8-2-embodiment 8.
Specific embodiment
The present invention is further described combined with specific embodiments below:
Embodiment 1:
Test material preparation process is as follows:
Step 1: the stainless steel sieve using different model screens out river sand by required diameter grain；In the present embodiment, using not Become rusty steel sieve, and sieve takes partial size≤0.4mm and the uniform river sand of gradation.
Step 2: weighing river sand, cement, waterglass and starch respectively according to weight using electronic scale；This implementation In example, weigh: 100 parts of partial size≤0.4mm river sand, 6 parts of cement, 2 parts of waterglass, 2 parts of starch.Take partial size≤0.4mm River sand 100g, cement 6g, waterglass 2g, starch 2g.
Step 3: river sand weighed in step 2, cement and starch are placed in container or stirrer for mixing and stirred It mixes uniformly；
Step 4: waterglass and suitable water is added according to weight in the material stirred evenly into step 3, Then it is sufficiently stirred either manually or by blender；
Step 5: by step 4 stir after material is fitted into standard rock sample mold, then pass through hand punning at Test specimen or mechanical ramming are at test specimen；
Step 6: being demoulded after the test specimen for consolidating or being compacted in step 5 is stood 1min, by the test specimen after demoulding in room Temperature lower maintenance 7 days.
After the completion of test piece maintenance, physical and mechanical property test is carried out to the test specimen after maintenance, obtains the physical force of test specimen Learn performance parameter, the test specimen test result finally obtained are as follows: severe γ is 15.63kN/m3, compression strength σcFor 0.118MPa, bullet Property modulus E be 39.856MPa, tensile strength sigmatFor 0.011MPa, water absorption rate 14.23%.
Embodiment 2:
Test material preparation process is as follows:
Step 1: the stainless steel sieve using different model screens out river sand by required diameter grain；In the present embodiment, using not Become rusty steel sieve, and sieve takes partial size≤0.4mm and the uniform river sand of gradation.
Step 2: weighing river sand, cement, waterglass and starch respectively according to weight using electronic scale；This implementation In example, weigh: 100 parts of partial size≤0.4mm river sand, 8 parts of cement, 4 parts of waterglass, 4 parts of starch.Take partial size≤0.4mm River sand 100g, cement 8g, waterglass 4g, starch 4g.
Step 3: river sand weighed in step 2, cement and starch are placed in container or stirrer for mixing and stirred It mixes uniformly；
Step 4: waterglass and suitable water is added according to weight in the material stirred evenly into step 3, Then it is sufficiently stirred either manually or by blender；
Step 5: by step 4 stir after material is fitted into standard rock sample mold, then pass through hand punning at Test specimen or mechanical ramming are at test specimen；
Step 6: being demoulded after the test specimen for consolidating or being compacted in step 5 is stood 1min, by the test specimen after demoulding in room Temperature lower maintenance 7 days.
After the completion of test piece maintenance, physical and mechanical property test is carried out to the test specimen after maintenance, obtains the physical force of test specimen Learn performance parameter.Under the proportion, the test specimen test data that finally obtains are as follows: severe γ is 15.50kN/m3, compression strength σcFor 0.095MPa, elastic modulus E 31.748MPa, tensile strength sigmatFor 0.009MPa, water absorption rate 13.24%.
Embodiment 3:
Test material preparation process is as follows:
Step 1: the stainless steel sieve using different model screens out river sand by required diameter grain；In the present embodiment, using not Become rusty steel sieve, and sieve takes partial size≤0.4mm and the uniform river sand of gradation.
Step 2: weighing river sand, cement, waterglass and starch respectively according to weight using electronic scale；This implementation In example, weigh: 100 parts of partial size≤0.4mm river sand, 10 parts of cement, 6 parts of waterglass, 6 parts of starch.Take partial size≤0.4mm River sand 100g, cement 10g, waterglass 6g, starch 6g.
Step 3: river sand weighed in step 2, cement and starch are placed in container or stirrer for mixing and stirred It mixes uniformly；
Step 4: waterglass and suitable water is added according to weight in the material stirred evenly into step 3, Then it is sufficiently stirred either manually or by blender；
Step 5: by step 4 stir after material is fitted into standard rock sample mold, then pass through hand punning at Test specimen or mechanical ramming are at test specimen；
Step 6: being demoulded after the test specimen for consolidating or being compacted in step 5 is stood 1min, by the test specimen after demoulding in room Temperature lower maintenance 7 days.
After the completion of test piece maintenance, physical and mechanical property test is carried out to the test specimen after maintenance, obtains the physical force of test specimen Learn performance parameter.Under the proportion, the test specimen test data that finally obtains are as follows: severe γ is 15.29kN/m3, compression strength σcFor 0.034MPa, elastic modulus E 14.311MPa, tensile strength sigmatFor 0.003MPa, water absorption rate 11.42%.
Embodiment 4:
Test material preparation process is as follows:
Step 1: the stainless steel sieve using different model screens out river sand by required diameter grain；In the present embodiment, using not Become rusty steel sieve, and sieve takes partial size≤0.4mm and the uniform river sand of gradation.
Step 2: weighing river sand, cement, waterglass and starch respectively according to weight using electronic scale；This implementation In example, weigh: 100 parts of partial size≤0.6mm river sand, 6 parts of cement, 4 parts of waterglass, 4 parts of starch.Take partial size≤0.6mm River sand 100g, cement 6g, waterglass 4g, starch 4g.
Step 3: river sand weighed in step 2, cement and starch are placed in container or stirrer for mixing and stirred It mixes uniformly；
Step 4: waterglass and suitable water is added according to weight in the material stirred evenly into step 3, Then it is sufficiently stirred either manually or by blender；
Step 5: by step 4 stir after material is fitted into standard rock sample mold, then pass through hand punning at Test specimen or mechanical ramming are at test specimen；
Step 6: being demoulded after the test specimen for consolidating or being compacted in step 5 is stood 1min, by the test specimen after demoulding in room Temperature lower maintenance 7 days.
After the completion of test piece maintenance, physical and mechanical property test is carried out to the test specimen after maintenance, obtains the physical force of test specimen Learn performance parameter.Under the proportion, the test specimen test data that finally obtains are as follows: severe γ is 16.01kN/m3, compression strength σcFor 0.062MPa, elastic modulus E 26.079MPa, tensile strength sigmatFor 0.005MPa, water absorption rate 13.88%.
Embodiment 5:
Test material preparation process is as follows:
Step 1: the stainless steel sieve using different model screens out river sand by required diameter grain；In the present embodiment, using not Become rusty steel sieve, and sieve takes partial size≤0.4mm and the uniform river sand of gradation.
Step 2: weighing river sand, cement, waterglass and starch respectively according to weight using electronic scale；This implementation In example, weigh: 100 parts of partial size≤0.6mm river sand, 8 parts of cement, 6 parts of waterglass, 2 parts of starch.Take partial size≤0.6mm River sand 100g, cement 8g, waterglass 6g, starch 2g.
Step 3: river sand weighed in step 2, cement and starch are placed in container or stirrer for mixing and stirred It mixes uniformly；
Step 4: waterglass and suitable water is added according to weight in the material stirred evenly into step 3, Then it is sufficiently stirred either manually or by blender；
Step 5: by step 4 stir after material is fitted into standard rock sample mold, then pass through hand punning at Test specimen or mechanical ramming are at test specimen；
Step 6: being demoulded after the test specimen for consolidating or being compacted in step 5 is stood 1min, by the test specimen after demoulding in room Temperature lower maintenance 7 days.
After the completion of test piece maintenance, physical and mechanical property test is carried out to the test specimen after maintenance, obtains the physical force of test specimen Learn performance parameter.Under the proportion, the test specimen test data that finally obtains are as follows: severe γ is 16.05kN/m3, compression strength σcFor 0.057MPa, elastic modulus E 20.784MPa, tensile strength sigmatFor 0.008MPa, water absorption rate 15.52%.
Embodiment 6:
Test material preparation process is as follows:
Step 1: the stainless steel sieve using different model screens out river sand by required diameter grain；In the present embodiment, using not Become rusty steel sieve, and sieve takes partial size≤0.4mm and the uniform river sand of gradation.
Step 2: weighing river sand, cement, waterglass and starch respectively according to weight using electronic scale；This implementation In example, weigh: 100 parts of partial size≤0.6mm river sand, 10 parts of cement, 2 parts of waterglass, 4 parts of starch.Take partial size≤0.6mm River sand 100g, cement 10g, waterglass 2g, starch 4g.
Step 3: river sand weighed in step 2, cement and starch are placed in container or stirrer for mixing and stirred It mixes uniformly；
Step 4: waterglass and suitable water is added according to weight in the material stirred evenly into step 3, Then it is sufficiently stirred either manually or by blender；
Step 5: by step 4 stir after material is fitted into standard rock sample mold, then pass through hand punning at Test specimen or mechanical ramming are at test specimen；
Step 6: being demoulded after the test specimen for consolidating or being compacted in step 5 is stood 1min, by the test specimen after demoulding in room Temperature lower maintenance 7 days.
After the completion of test piece maintenance, physical and mechanical property test is carried out to the test specimen after maintenance, obtains the physical force of test specimen Learn performance parameter.Under the proportion, the test specimen test data that finally obtains are as follows: severe γ is 16.58kN/m3, compression strength σcFor 0.278MPa, elastic modulus E 65.819MPa, tensile strength sigmatFor 0.031MPa, water absorption rate 14.54%.
Embodiment 7:
Test material preparation process is as follows:
Step 1: the stainless steel sieve using different model screens out river sand by required diameter grain；In the present embodiment, using not Become rusty steel sieve, and sieve takes partial size≤0.4mm and the uniform river sand of gradation.
Step 2: weighing river sand, cement, waterglass and starch respectively according to weight using electronic scale；This implementation In example, weigh: 100 parts of partial size≤0.8mm river sand, 6 parts of cement, 6 parts of waterglass, 4 parts of starch.Take partial size≤0.8mm River sand 100g, cement 6g, waterglass 6g, starch 4g.
Step 3: river sand weighed in step 2, cement and starch are placed in container or stirrer for mixing and stirred It mixes uniformly；
Step 4: waterglass and suitable water is added according to weight in the material stirred evenly into step 3, Then it is sufficiently stirred either manually or by blender；
Step 5: by step 4 stir after material is fitted into standard rock sample mold, then pass through hand punning at Test specimen or mechanical ramming are at test specimen；
Step 6: being demoulded after the test specimen for consolidating or being compacted in step 5 is stood 1min, by the test specimen after demoulding in room Temperature lower maintenance 7 days.
After the completion of test piece maintenance, physical and mechanical property test is carried out to the test specimen after maintenance, obtains the physical force of test specimen Learn performance parameter.Under the proportion, the test specimen test data that finally obtains are as follows: severe γ is 16.46kN/m3, compression strength σcFor 0.078MPa, elastic modulus E 24.421MPa, tensile strength sigmatFor 0.006MPa, water absorption rate 18.34%.
Embodiment 8:
Test material preparation process is as follows:
Step 1: the stainless steel sieve using different model screens out river sand by required diameter grain；In the present embodiment, using not Become rusty steel sieve, and sieve takes partial size≤0.4mm and the uniform river sand of gradation.
Step 2: weighing river sand, cement, waterglass and starch respectively according to weight using electronic scale；This implementation In example, weigh: 100 parts of partial size≤0.8mm river sand, 8 parts of cement, 2 parts of waterglass, 6 parts of starch.Take partial size≤0.8mm River sand 100g, cement 8g, waterglass 2g, starch 6g.
Step 3: river sand weighed in step 2, cement and starch are placed in container or stirrer for mixing and stirred It mixes uniformly；
Step 4: waterglass and suitable water is added according to weight in the material stirred evenly into step 3, Then it is sufficiently stirred either manually or by blender；
Step 5: by step 4 stir after material is fitted into standard rock sample mold, then pass through hand punning at Test specimen or mechanical ramming are at test specimen；
Step 6: being demoulded after the test specimen for consolidating or being compacted in step 5 is stood 1min, by the test specimen after demoulding in room Temperature lower maintenance 7 days.
After the completion of test piece maintenance, physical and mechanical property test is carried out to the test specimen after maintenance, obtains the physical force of test specimen Learn performance parameter.Under the proportion, the test specimen test data that finally obtains are as follows: severe γ is 16.87kN/m3, compression strength σcFor 0.151MPa, elastic modulus E 47.625MPa, tensile strength sigmatFor 0.014MPa, water absorption rate 16.53%.
Embodiment 9:
Test material preparation process is as follows:
Step 1: the stainless steel sieve using different model screens out river sand by required diameter grain；In the present embodiment, using not Become rusty steel sieve, and sieve takes partial size≤0.4mm and the uniform river sand of gradation.
Step 2: weighing river sand, cement, waterglass and starch respectively according to weight using electronic scale；This implementation In example, weigh: 100 parts of partial size≤0.8mm river sand, 10 parts of cement, 4 parts of waterglass, 2 parts of starch.Take partial size≤0.8mm River sand 100g, cement 10g, waterglass 4g, starch 2g.
Step 3: river sand weighed in step 2, cement and starch are placed in container or stirrer for mixing and stirred It mixes uniformly；
Step 4: waterglass and suitable water is added according to weight in the material stirred evenly into step 3, Then it is sufficiently stirred either manually or by blender；
Step 5: by step 4 stir after material is fitted into standard rock sample mold, then pass through hand punning at Test specimen or mechanical ramming are at test specimen；
Step 6: being demoulded after the test specimen for consolidating or being compacted in step 5 is stood 1min, by the test specimen after demoulding in room Temperature lower maintenance 7 days.
After the completion of test piece maintenance, physical and mechanical property test is carried out to the test specimen after maintenance, obtains the physical force of test specimen Learn performance parameter.Under the proportion, the test specimen test data that finally obtains are as follows: severe γ is 17.14kN/m3, compression strength σcFor 0.217MPa, elastic modulus E 52.082MPa, tensile strength sigmatFor 0.019MPa, water absorption rate 18.21%.
Data in above-described embodiment 1-9 are verified by orthogonal test, test is contained with river sand partial size (A), cement It measures (B), waterglass content (C), content of starch (D), be influence factor, the horizontal orthogonal scheme L9 of each factor design 4 (34), concrete scheme is as shown in the table
Experiment using double molds by the analog material under same proportion be fabricated to Φ 50mm × 100mm, Φ 50mm × The cylinder specimen of 25mm different size, every kind of specification test specimen make 6, and 9 groups of test 108 test specimens of total production are specific to make It is as follows to make process: 1. screening out river sand by required diameter grain using the stainless steel sieve of different model；2. strictly being used by required quality High-precision electronic scale weighs raw material；3. weighed river sand, cement, starch are manually stirred evenly；4. waterglass is added and fits The water of amount is sufficiently stirred；5. the material stirred evenly is packed into double molds to carry out manually hitting reality；6. real good examination will be hit Part stands 1min, and demoulding conserves 7 days at room temperature.The physical and mechanical property for testing test specimen, obtains the physical and mechanical property of test specimen Parameter.Orthogonal experiments table is as shown in the table:
Part test specimen stress and strain curve, the part test specimen stress and strain curve can be drawn out according to above-mentioned data As shown in Figure 1,
It can be seen from above-described embodiment that a kind of physical simulation experimental material disclosed by the invention, uses river Sand is used as aggregate, and cement and waterglass are cementing agent, and starch is regulator, and water is fusion agent.In the embodiment of the present invention, cement because Proportion variation, Strength Changes range is wide, main control action is played to the strength of materials and elasticity modulus, so that test specimen manufacture craft Simply, rate of set is fast, saves test period；Wherein its adjustable intensity of waterglass and filling hole, can preferably make material Material mixes, and more uniform, more integrated, waterglass also acts as the effect of quick dry agent, can make material when drying speed more Fastly, the test piece maintenance time is reduced；Wherein starch performance is stablized, and can make material when drying speed faster, can shorten the test period, and And in mixing material, content of starch is higher, and material granule is cementing more closely knit, and porosity is lower, and permeability is lower.
Therefore, low-intensity physical simulation experimental material of the invention is replaced using cement and waterglass as cementing agent Original cement, chalk powder and gypsum etc. are used as cementing agent, when, analog seam mining controllable with physical and mechanical property on Rock stratum spontaneous caving, simulation similarity is high, manufacture craft is simple, curing time is short, raw material sources are wide, environmentally friendly and at low cost etc. Feature.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention Technical spirit any simple modification, change and equivalent structure transformation to the above embodiments, still fall within skill of the present invention In the protection scope of art scheme.

Claims (7)

1. a kind of physical simulation experimental material, it is characterised in that: the physical simulation experimental material mainly by according to The following raw material of parts by weight meter is prepared: 100 parts of river sand, 6-10 parts of cement, 2-6 parts of waterglass and 2-6 parts of starch.
2. a kind of physical simulation experimental material described in accordance with the claim 1, it is characterised in that: the partial size of the river sand≤ 0.8mm and gradation is uniform.
3. a kind of physical simulation experimental material according to claim 1 or 2, it is characterised in that: the cement is 525 Number high-quality grey portland cement.
4. a kind of physical simulation experimental material according to claim 1 or 2, it is characterised in that: the starch is horse Bell sweet potato starch.
5. a kind of physical simulation experimental material according to claim 1 or 2, it is characterised in that: the waterglass is Modulus is 2.5 waterglass.
6. a kind of physical simulation experimental material described in accordance with the claim 3, it is characterised in that: the starch is potato Starch, the waterglass are the waterglass that modulus is 2.5.
7. a kind of prepare physical simulation experimental material method as described in claim 1, it is characterised in that: including following step It is rapid:
Step 1: screening out river sand by required diameter grain using stainless steel sieve；
Step 2: weighing river sand, cement, waterglass and starch respectively according to weight using electronic scale；
Step 3: river sand weighed in step 2, cement and starch are placed in container or stirrer for mixing and stirred equal It is even；
Step 4: waterglass and suitable water is added according to weight, then in the material stirred evenly into step 3 It is sufficiently stirred either manually or by blender；
Step 5: the material after stirring in step 4 is fitted into standard rock sample mold, then by hand punning at test specimen Or mechanical ramming is at test specimen；
Step 6: being demoulded after the test specimen for consolidating or being compacted in step 5 is stood 1min, at room temperature by the test specimen after demoulding Maintenance 7 days.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113252871A (en) * 2021-04-14 2021-08-13 浙江大学 Non-stop excavation method for centrifuge test rock slope model based on salt carving process

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