CN108827818A - A kind of test method of fine aggregate water absorption character - Google Patents
A kind of test method of fine aggregate water absorption character Download PDFInfo
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- CN108827818A CN108827818A CN201810835121.6A CN201810835121A CN108827818A CN 108827818 A CN108827818 A CN 108827818A CN 201810835121 A CN201810835121 A CN 201810835121A CN 108827818 A CN108827818 A CN 108827818A
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- fine aggregate
- water absorption
- absorption character
- test method
- aggregate water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 58
- 238000010998 test method Methods 0.000 title claims abstract description 26
- 238000012360 testing method Methods 0.000 claims abstract description 35
- 239000002245 particle Substances 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims description 17
- 238000011156 evaluation Methods 0.000 claims description 5
- 230000035945 sensitivity Effects 0.000 abstract description 14
- 238000011160 research Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000013459 approach Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 18
- 239000004575 stone Substances 0.000 description 12
- 239000010426 asphalt Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000006028 limestone Substances 0.000 description 3
- 238000011835 investigation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012163 sequencing technique Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000004035 construction material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/04—Investigating osmotic effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The present invention relates to a kind of test methods of fine aggregate water absorption character, and this method comprises the following steps：1）Prepare the different fine aggregate of particle size；2）Fine aggregate water absorption character is tested using climatic chamber；3）Fine aggregate water absorption character situation of change obtained by testing is exported by Origin.The test method is a kind of to research fine aggregate water sensitivity very practical approach, and method is simple, easy to operate, energy consumption is low, at low cost, is conducive to environmental protection.
Description
Technical field
The invention belongs to pavement construction material preparation technical fields, and in particular to a kind of test side of fine aggregate water absorption character
Method.
Background technique
Due to the operating feature of warm mix technology itself, the moisture content that gathers materials can generate shadow to the service performance on warm-mixed asphalt road surface
It rings.Mixture is that mix forms at a lower temperature with pitch in warm mix technology, since mix temperature is lower, will cause building stones
It cannot thoroughly be dried when mixing and stirring, residual moisture forms Water Damage on Asphalt Pavement performance between pitch and building stones interface
And the hidden danger of cryogenic property influences long-term behaviour to increase moisture content sensibility.
Zhou Pei prolongs to be calculated by the research to blending craft parameter in mixture actual production, it is determined that stone in actual production
Expect aqueous drying capacity；Indoor baking oven heating, drying test is carried out to building stones inside practical building stones heap, research shows that indoor baking
The drying situation of dry heating 1h is similar to building stones drying situation in actual production blending craft, and indoor baking oven heating can be used and dry
Dry simulating actual conditions；On the basis of this research conclusion, by changing indoor drying time, building stones moisture content is had studied for temperature
The influence of Asphalt Mixture is mixed, and variance analysis has been carried out to test result, the results showed that the mixing material tube for heating 1h is used
Performance does not meet code requirement, and moisture content conspicuousness influences warm mix Asphalt Mixture.
In consideration of it, the water sensitivity that gathers materials is the factor for influencing Warm-Mix Bitumen Mixture water stabilizing.
Summary of the invention
In order to test the water absorption character of fine aggregate, the present invention provides a kind of test method of fine aggregate water absorption character, presses
Include the following steps according to sequencing：
Step 1 prepares the fine aggregate of partial size of different sizes；
Step 2 tests fine aggregate water absorption character using climatic chamber；
Step 3, fine aggregate water absorption character situation of change obtained by testing are exported by Origin data processing software.
The present invention first classifies fine aggregate according to particle size, and quality is with asphalt AC-13 gradation intermediate value
Requirement weigh, before on-test guarantee fine aggregate be drying regime；Second, by being set to climatic chamber test parameters
It is fixed, it is tested under difficult environmental conditions, every the quality of 0.5h test fine aggregate；Third, takes the water absorption rate of fine aggregate to be
The evaluation index of water sensitivity exports the water absorption character situation of change under different condition by Origin data processing software；
Finally, with the intermediate value of maximum water absorption rate when 4h as the water sensitivity for distinguishing fine aggregate.
The invention proposes a kind of test methods of fine aggregate water absorption character, have to the test of fine aggregate water absorption character from now on
There is important directive significance.
In any of the above-described scheme preferably, in step 1, the fine aggregate partial size of selection be respectively 4.75mm,
2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm and 0.075mm.
In any of the above-described scheme preferably, in step 1, the initial mass of the different fine aggregate of the particle size
It is determined according to AC-13 gradation intermediate value.
In any of the above-described scheme preferably, in step 1, the different fine aggregate of the particle size is dry shape
State.
In any of the above-described scheme preferably, in step 2, the model HWS-250B of the climatic chamber.
In any of the above-described scheme preferably, in step 2, the condition of the test is control temperature and relative humidity.
In any of the above-described scheme preferably, described controlled at 10 DEG C, 15 DEG C and 40 DEG C in step 2.
In any of the above-described scheme preferably, in step 2, the control relative humidity is 40%, 60% and 80%.
In any of the above-described scheme preferably, in step 2, every the quality of 0.5h test fine aggregate, until constant weight.
In any of the above-described scheme preferably, in step 3, the data of test are inhaled using water absorption rate as evaluation fine aggregate
The main indicator of water characteristic.
The present invention contains a kind of test method of fine aggregate water absorption character, and climatic chamber is the important work in investigation of materials
Tool, is applied in fields such as electronics, agricultural, new material and civil engineerings, and climatic chamber is used to test fine aggregate water sensitive
Property research it is relatively fewer at present, extremely limited to the analysis of fine aggregate water sensitivity, therefore, fine aggregate of the invention absorbs water special
Property test method be a kind of to research fine aggregate water sensitivity very practical approach, and this method is simple, easy to operate, energy consumption
It is low, at low cost, be conducive to environmental protection.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is that the fine aggregate water suction of a preferred embodiment of the test method of fine aggregate water absorption character according to the invention is special
Property test method block diagram；
Fig. 2 is the limestone fine aggregate of a preferred embodiment of the test method of fine aggregate water absorption character according to the invention
Sample；
Fig. 3 is different phases at 10 DEG C of a preferred embodiment of the test method of fine aggregate water absorption character according to the invention
To humidity fine aggregate water absorption character variation diagram；
Fig. 4 is different phases at 25 DEG C of a preferred embodiment of the test method of fine aggregate water absorption character according to the invention
To humidity fine aggregate water absorption character variation diagram；
Fig. 5 is different phases at 40 DEG C of a preferred embodiment of the test method of fine aggregate water absorption character according to the invention
To humidity fine aggregate water absorption character variation diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The prior art calculates the research of blending craft parameter in mixture actual production, it is determined that building stones in actual production
Aqueous drying capacity；Indoor baking oven heating, drying test is carried out to building stones inside practical building stones heap, research shows that indoor drying
The drying situation for heating 1h is similar to building stones drying situation in actual production blending craft, and indoor baking oven heating, drying can be used
Simulating actual conditions.On the basis of this research conclusion, by changing indoor drying time, building stones moisture content is had studied for warm mix
The influence of Asphalt Mixture, and variance analysis has been carried out to test result, the results showed that heat the mixing material tube of 1h
Code requirement can not be met, moisture content conspicuousness influences warm mix Asphalt Mixture.In consideration of it, the water sensitivity that gathers materials is to influence
The factor of Warm-Mix Bitumen Mixture water stabilizing.
In order to test the water absorption character of fine aggregate, the embodiment of the present invention provides a kind of test side of fine aggregate water absorption character
Method, as shown in Figure 1, it includes the following steps according to sequencing：
Step 1 prepares the fine aggregate of partial size of different sizes；
Step 2 tests fine aggregate water absorption character using climatic chamber；
Step 3, fine aggregate water absorption character situation of change obtained by testing are exported by Origin data processing software.
Firstly, fine aggregate is classified according to particle size, quality is with the requirement of asphalt AC-13 gradation intermediate value
It weighs, guaranteed that fine aggregate is drying regime before on-test；Second, by the setting to climatic chamber test parameters, not
With being tested under environmental condition, every the quality of 0.5h test fine aggregate；Third, taking the water absorption rate of fine aggregate is water sensitivity
Evaluation index, the water absorption character situation of change under different condition is exported by Origin data processing software；Finally, with 4h
When maximum water absorption rate intermediate value as distinguish fine aggregate water sensitivity.
In step 1, the fine aggregate partial size of selection be respectively 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm,
0.15mm and 0.075mm.
In step 1, the initial mass of the different fine aggregate of the particle size is determined according to AC-13 gradation intermediate value.
In step 1, the different fine aggregate of the particle size is drying regime.
In step 2, the model HWS-250B of the climatic chamber.
In step 2, the condition of the test is control temperature and relative humidity.
It is described controlled at 10 DEG C, 15 DEG C and 40 DEG C in step 2.
In step 2, the control relative humidity is 40%, 60% and 80%.
In step 2, every the quality of 0.5h test fine aggregate, until constant weight.
In step 3, the data of test are using water absorption rate as the main indicator of evaluation fine aggregate water absorption character.
Climatic chamber is the important tool in investigation of materials, is applied in electronics, agricultural, new material and civil engineering etc.
Field, and use the research of climatic chamber test fine aggregate water sensitivity relatively fewer at present, to fine aggregate water sensitivity
Analyze extremely limited, therefore, the test method of fine aggregate water absorption character is a kind of to the research very practical side of fine aggregate water sensitivity
Method, and this method is simple, easy to operate, energy consumption is low, at low cost, is conducive to environmental protection.
Embodiment one：
Fine aggregate selects limestone.
(1) the different limestone fine aggregate of particle size is weighed, when test guarantees that fine aggregate is drying regime.Fine aggregate
Sample is shown in Fig. 2.
(2) the HWS-250B type climatic chamber of Tianjin Stettlen Instrument Ltd. is used, which refers to
Mark is shown in Table 1, and test parameter is shown in Table 2.
Table 1
Table 2
(3) fine aggregate water absorption character is detailed in Fig. 3 to 5.
It can be seen that by Fig. 3~5：
1) from the point of view of fine aggregate water absorption rate increasing degree, in 4h the different fine aggregate of 3 kinds of particle sizes (0.075mm,
0.15mm and 0.3mm) water absorption rate increasing degree be remaining 4 kinds of fine aggregate (0.6mm, 1.18mm, 2.36mm and 4.75mm)
50% or more, when illustrating that water absorption rate reaches peak value, 0.075mm, 0.15mm and 0.3mm fine aggregate water absorption rate increase obvious.
2) from the point of view of fine aggregate water absorption rate is advanced the speed, in 2h the different fine aggregate of 3 kinds of particle sizes (0.075mm,
0.15mm and 0.3mm) water absorption rate advance the speed higher than remaining 4 kinds of fine aggregate (0.6mm, 1.18mm, 2.36mm and 4.75mm)
30%, illustrate 0.075mm, 0.15mm and 0.3mm fine aggregate absorb moisture speed faster.
3) it is directed to whether being of fine aggregate water sensitivity, under the conditions of different experimental enviroments, with maximum water absorption rate when 4h
50% as partitioning standards, the fine aggregate that will be above 50% maximum water absorption rate is considered as to water sensitive, lower than 50% maximum water suction
The fine aggregate of rate is considered as insensitive to water.
The above is only that preferred embodiments of the present invention will be described, is limited the scope of the present invention
It is fixed.It will be apparent to those skilled in the art that a kind of test method of fine aggregate water sensitivity of the invention includes that foregoing invention is said
The summary of the invention of bright book and any combination of specific embodiment part, as space is limited and for keep specification concise without by this
The scheme that a little combinations are constituted describes one by one.All within the spirits and principles of the present invention, any modification for being made, equivalent replacement,
Improve etc., it should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of test method of fine aggregate water absorption character, includes the following steps：
Step 1 prepares the fine aggregate of partial size of different sizes；
Step 2 tests fine aggregate water absorption character using climatic chamber；
Step 3, fine aggregate water absorption character situation of change obtained by testing are exported by Origin.
2. a kind of test method of fine aggregate water absorption character as described in claim 1, it is characterised in that：In the step 1,
The fine aggregate partial size of selection is respectively 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm and 0.075mm.
3. a kind of test method of fine aggregate water absorption character as described in claim 1, it is characterised in that：In the step 1,
The initial mass of the different fine aggregate of the particle size is determined according to AC-13 gradation intermediate value.
4. a kind of test method of fine aggregate water absorption character as described in claim 1, it is characterised in that：In the step 1,
The different fine aggregate of the particle size is drying regime.
5. a kind of test method of fine aggregate water absorption character as described in claim 1, it is characterised in that：In the step 2,
The model HWS-250B of the climatic chamber.
6. a kind of test method of fine aggregate water absorption character as described in claim 1, it is characterised in that：In the step 2,
The condition of the test is control temperature and relative humidity.
7. a kind of test method of fine aggregate water absorption character as described in claim 1, it is characterised in that：In the step 2,
It is described controlled at 10 DEG C, 15 DEG C and 40 DEG C.
8. a kind of test method of fine aggregate water absorption character as described in claim 1, it is characterised in that：In the step 2,
The control relative humidity is 40%, 60% and 80%.
9. a kind of test method of fine aggregate water absorption character as described in claim 1, it is characterised in that：In the step 2,
Every the quality of 0.5h test fine aggregate, until constant weight.
10. a kind of test method of fine aggregate water absorption character as described in claim 1, it is characterised in that：In the step 3,
The data of test are using water absorption rate as the main indicator of evaluation fine aggregate water absorption character.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810835121.6A CN108827818A (en) | 2018-07-26 | 2018-07-26 | A kind of test method of fine aggregate water absorption character |
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| CN201810835121.6A CN108827818A (en) | 2018-07-26 | 2018-07-26 | A kind of test method of fine aggregate water absorption character |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458256A (en) * | 2020-03-11 | 2020-07-28 | 齐鲁交通发展集团有限公司 | Indoor simulation test method for aggregate drying process in pavement production link |
| CN114166684A (en) * | 2021-11-15 | 2022-03-11 | 中路交科检测技术有限公司 | Testing method and testing tool for high-temperature anti-stripping performance of basalt for road |
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Application publication date: 20181116 |
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