CN104596878A - Method and test steps for testing water absorption capacity of porous stone in fresh concrete - Google Patents
Method and test steps for testing water absorption capacity of porous stone in fresh concrete Download PDFInfo
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- CN104596878A CN104596878A CN201510020118.5A CN201510020118A CN104596878A CN 104596878 A CN104596878 A CN 104596878A CN 201510020118 A CN201510020118 A CN 201510020118A CN 104596878 A CN104596878 A CN 104596878A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 239000004575 stone Substances 0.000 title claims abstract description 60
- 238000012360 testing method Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 14
- 238000010521 absorption reaction Methods 0.000 title abstract 3
- 238000010998 test method Methods 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000007654 immersion Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000011521 glass Substances 0.000 claims description 21
- 239000012188 paraffin wax Substances 0.000 claims description 17
- 239000001993 wax Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000004568 cement Substances 0.000 abstract description 9
- 239000011148 porous material Substances 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- 239000012615 aggregate Substances 0.000 description 18
- 230000008929 regeneration Effects 0.000 description 16
- 238000011069 regeneration method Methods 0.000 description 16
- 238000002156 mixing Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a test method and test steps for testing water absorption capacity of porous stone in fresh concrete. Firstly, test data in each step are measured through test steps of stone drying, water immersion, wax sealing and the like, and then the total mass of water absorbed by the stone and water saturated in pores is calculated through a formula deduced by the invention. Therefore, the problem that when the porous stone is used in cement concrete, the unit water consumption in the newly-mixed cement concrete cannot be accurately determined due to water absorption and water saturation in gaps of the stone is solved.
Description
Technical field
The present invention relates to a kind of method of testing for testing porous building stones water absorbing capacity in fresh concrete and test procedure, belonging to Communication and Transportation Engineering field.
Background technology
Along with the continuous quickening of highway and Process of Urbanization Construction process paces, the development that building trade is advanced by leaps and bounds, increases day by day to the demand of the reinforcement of concrete rubble.But due to rock, cobble geographical resource skewness, result in the artificial rubble of some areas, the shortage of cobble.Therefore, in line with gathering materials on the spot, protection of the environment, the principle of suiting measures to local conditions, porous building stones (as porous basalt, slag, regeneration aggregate etc.) have also been obtained more and more general application.
When porous building stones are used for mixing cement concrete, except building stones can absorb except portion of water, the space that building stones itself exist also can absorb and store a certain amount of moisture.So in the process of preparation cement concrete, during unit of account water consumption, should count this part due to building stones water suction, space water storage and need increase additional water consumption, otherwise the water consumption for hydrated cementitious can be caused to reduce, affect hydrated cementitious, and then affect the formation of cement concrete strength.
But existing aggregate water-intake rate method of testing (as surface drying method) is all the water suction considering aggregate, does not consider that the space of building stones can absorb the moisture of storage when mixing cement concrete.
Summary of the invention
During in order to overcome porous building stones for fresh concrete, existing building stones water-intake rate method of testing cannot the deficiency of its water absorbing capacity of Accurate Determining (rate), the present invention proposes a kind of porous building stones water absorbing capacity method of testing and test procedure in fresh concrete, and the method effectively can determine the water suction of porous building stones in fresh concrete (building stones water suction+hole satisfy water) amount.
For realizing above-mentioned task, the technical scheme that the present invention proposes is as follows.
(1) for a building stones of a certain particle diameter or gather materials by the portion that grating requirement is chosen, quality under its state of nature is taken, m
1; Again by building stones as drying to constant weight in the baking oven of 105 DEG C ± 5 DEG C, take the quality under building stones drying regime, m
2.
(2) 2000mL volumetric flask (also can replace with the wide mouth glass bottle of ground) is got, in bottle, add water to 1/2 place, then the building stones of oven dry are put into bottle, jog volumetric flask or stir building stones with glass bar, the bubble be attached on bottle wall and building stones is all overflowed, then to topped up with water in bottle.24h is soaked under being placed in room temperature.
(3) after 24 hours until immersion, in volumetric flask, add water to the water surface protrude bottleneck, slide rapidly along bottleneck with glass sheet, make it be close to the bottleneck water surface.If there is bubble between glass sheet and bottleneck in taxiing procedures, available dropper adds water on a small quantity to bottleneck, and ensureing must not have bubble to exist between glass sheet and the water surface.After confirming there is no bubble in bottle, dry the moisture of bottle outer wall, then take the gross mass of volumetric flask, building stones, water and glass sheet, m
3.
(4) filtering moisture on the sieve water in volumetric flask and building stones all being poured into 2.36mm aperture, adopt machinery or manual type to shake sieve 2min, then dry the attached water of stone surface with clean wet towel, its surface is reached capacity surface dry condition, record building stones quality again, m
4.
(5) by more than melted paraffin wax to its fusing point 5.5 DEG C ± 0.5 DEG C (paraffin melting point is about 58 DEG C), building stones are immersed in paraffin liquid rapidly by grain, and takes out rapidly, observe its surface, if any bubble, then paraffin again after pricking a bubble with pin.After whole building stones have soaked paraffin, take the building stones quality after sealing with wax, m
5.
(6) putting into volumetric flask by wrapping the building stones after paraffin, by the water feeding method topped up with water of step (3), taking volumetric flask, seal with wax after the quality of building stones, water and glass sheet, m
6.
(7) total water suction quality m of following formulae discovery building stones is adopted:
。
The inventive method is to consider that the space of building stones can absorb and the moisture stored in the mixing process of fresh cement concrete relative to the advantage of existing building stones water-intake rate method of testing, measure the whole water suctions of porous building stones in cement concrete (building stones water suction+hole satisfy water) amount accurately, thus accurately calculate the additional water consumption of required increase when using it for preparation cement concrete.
Embodiment
For embodiment, the present invention is described in further detail in the water absorbing capacity test of the regeneration aggregate produced through fragmentation with Deteriorated concrete pavement below.It should be noted that, following embodiment is the present invention's preferably example, not does any restriction to the present invention.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
(1) choose the regeneration aggregate that a particle diameter is 19mm, take quality under its state of nature, m
1; Again by it as drying to constant weight in the baking oven of 105 DEG C ± 5 DEG C, take the quality under regeneration aggregate drying regime, m
2.
(2) 2000mL volumetric flask (also can replace with the wide mouth glass bottle of ground) is got, 1/2 place is added water in bottle, then the regeneration aggregate of oven dry is put into bottle, jog volumetric flask or stir regeneration aggregate with glass bar, the bubble be attached on bottle wall and regeneration aggregate is all overflowed, then to topped up with water in bottle.24h is soaked under being placed in room temperature.
(3) after 24 hours until immersion, in volumetric flask, add water to the water surface protrude bottleneck, slide rapidly along bottleneck with glass sheet, make it be close to the bottleneck water surface.If there is bubble between glass sheet and bottleneck in taxiing procedures, available dropper adds water on a small quantity to bottleneck, and ensureing must not have bubble to exist between glass sheet and the water surface.After confirming there is no bubble in bottle, dry the moisture of bottle outer wall, then take the gross mass of volumetric flask, regeneration aggregate, water and glass sheet, m
3.
(4) filtering moisture on the sieve water in volumetric flask and regeneration aggregate all being poured into 2.36mm aperture, adopt the sieve 2min that manually shakes, then dry the attached water on regeneration aggregate surface with clean wet towel, its surface is reached capacity surface dry condition, record regeneration aggregate quality again, m
4.
(5) by melted paraffin wax to 63 DEG C ± 0.5 DEG C, regeneration aggregate is immersed in paraffin liquid rapidly by grain, and takes out rapidly, observe its surface, if any bubble, then paraffin again after pricking a bubble with pin.After whole regeneration aggregate has soaked paraffin, take the regeneration aggregate quality after sealing with wax, m
5.
(6) putting into volumetric flask by wrapping the regeneration aggregate after paraffin, by the water feeding method topped up with water of step (3), taking volumetric flask, seal with wax after the quality of regeneration aggregate, water and glass sheet, m
6.
(7) total water suction quality m of following formulae discovery building stones is adopted:
。
The various quality weighed in each step in above-mentioned (1) ~ (7) and the water absorbing capacity result of calculation of building stones are in table 1.
Weighing quality in table 1 process of the test and building stones water absorbing capacity result of calculation (unit: g)
| m 1 | m 2 | m 3 | m 4 | m 5 | m 6 | m |
| 887.1 | 859.3 | 2236.9 | 898.7 | 941.2 | 2228.0 | 44.0 |
Claims (2)
1., for testing method of testing and the test procedure of porous building stones water absorbing capacity in fresh concrete, it is characterized in that, described test procedure comprises:
(1) for a building stones of a certain particle diameter or gather materials by the portion that grating requirement is chosen, quality under its state of nature is taken, m
1; Again by building stones as drying to constant weight in the baking oven of 105 DEG C ± 5 DEG C, take the quality under building stones drying regime, m
2;
(2) 2000mL volumetric flask (also can replace with the wide mouth glass bottle of ground) is got, 1/2 place is added water in bottle, then the building stones of oven dry are put into bottle, jog volumetric flask or stir building stones with glass bar, the bubble be attached on bottle wall and building stones is all overflowed, again to topped up with water in bottle, under being placed in room temperature, soak 24h;
(3) until immersion after 24 hours, in volumetric flask, add water to the water surface protrude bottleneck, slide rapidly along bottleneck with glass sheet, make it be close to the bottleneck water surface, if there is bubble between glass sheet and bottleneck in taxiing procedures, available dropper adds water on a small quantity to bottleneck, ensure bubble must not be had to exist between glass sheet and the water surface, after confirming there is no bubble in bottle, dry the moisture of bottle outer wall, then the gross mass of volumetric flask, building stones, water and glass sheet is taken, m
3;
(4) filtering moisture on the sieve water in volumetric flask and building stones being poured into 2.36mm aperture, adopt machinery or manual type to shake sieve 2min again, then dry the attached water of stone surface with clean wet towel, its surface is reached capacity surface dry condition, record building stones quality again, m
4;
(5) by more than melted paraffin wax to its fusing point 5.5 DEG C ± 0.5 DEG C (paraffin melting point is about 58 DEG C), building stones are immersed in paraffin liquid rapidly by grain, and take out rapidly, observe its surface, if any bubble, then paraffin again after pricking a bubble with pin, after whole building stones have soaked paraffin, take the building stones quality after sealing with wax, m
5;
(6) putting into volumetric flask by wrapping the building stones after paraffin, by the water feeding method topped up with water of preceding step, taking volumetric flask, seal with wax after the quality of building stones, water and glass sheet, m
6.
2. porous building stones according to claim 1 water absorbing capacity method of testing and test procedure in fresh concrete, is characterized in that, can adopt the total water suction quality m of the porous building stones described in following formulae discovery in fresh concrete:
。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849168A (en) * | 2015-05-19 | 2015-08-19 | 湖南省交通科学研究院 | Measurement method of water absorption of regenerative coarse aggregates |
| CN111650092A (en) * | 2020-06-17 | 2020-09-11 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Method and device for testing water absorption rate of machine-made sand |
| CN115096747A (en) * | 2022-06-06 | 2022-09-23 | 长江水利委员会长江科学院 | Method for measuring performance index of concrete continuous graded aggregate |
Citations (4)
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|---|---|---|---|---|
| SU644480A1 (en) * | 1976-04-12 | 1979-01-30 | Одесский научно-исследовательский институт стоматологии | Method of determining the shrinkage volume of plastic dental materials |
| CN101477012A (en) * | 2009-01-21 | 2009-07-08 | 交通部公路科学研究所 | Method for wax-sealed measurement of asphalt mixture bulk density |
| CN101629889A (en) * | 2009-08-18 | 2010-01-20 | 中国建筑第八工程局有限公司 | Method for measuring pressure water absorption rate of lightweight aggregate concrete |
| CN101726447A (en) * | 2009-12-29 | 2010-06-09 | 常州广为仪器科技有限公司 | Method and device for measuring moisture absorptivity of aggregates |
-
2015
- 2015-01-15 CN CN201510020118.5A patent/CN104596878B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU644480A1 (en) * | 1976-04-12 | 1979-01-30 | Одесский научно-исследовательский институт стоматологии | Method of determining the shrinkage volume of plastic dental materials |
| CN101477012A (en) * | 2009-01-21 | 2009-07-08 | 交通部公路科学研究所 | Method for wax-sealed measurement of asphalt mixture bulk density |
| CN101629889A (en) * | 2009-08-18 | 2010-01-20 | 中国建筑第八工程局有限公司 | Method for measuring pressure water absorption rate of lightweight aggregate concrete |
| CN101726447A (en) * | 2009-12-29 | 2010-06-09 | 常州广为仪器科技有限公司 | Method and device for measuring moisture absorptivity of aggregates |
Non-Patent Citations (3)
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| 张林星: "石料的物理性质及试验", 《交通世界》 * |
| 王林: "再生骨料混凝土性能研究", 《长江大学学报（自科版）》 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849168A (en) * | 2015-05-19 | 2015-08-19 | 湖南省交通科学研究院 | Measurement method of water absorption of regenerative coarse aggregates |
| CN111650092A (en) * | 2020-06-17 | 2020-09-11 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Method and device for testing water absorption rate of machine-made sand |
| CN115096747A (en) * | 2022-06-06 | 2022-09-23 | 长江水利委员会长江科学院 | Method for measuring performance index of concrete continuous graded aggregate |
| CN115096747B (en) * | 2022-06-06 | 2024-04-16 | 长江水利委员会长江科学院 | Method for measuring performance index of concrete continuous grading aggregate |
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| CN104596878B (en) | 2017-07-11 |
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Address after: 410114, Chek Lap Road, Tianxin District, Hunan, Changsha, 45 Co-patentee after: QINGYUAN HIGHWAY PROSPECTING AND PLANNING DESIGN INSTITUTE Patentee after: Changsha University of Sciences and Technology Co-patentee after: Qingyuan transportation service center Co-patentee after: Qingyuan highway emergency rescue center Address before: Wanjiali road 410114 in Hunan province Changsha Yuhua District, two No. 960 Co-patentee before: QINGYUAN HIGHWAY PROSPECTING AND PLANNING DESIGN INSTITUTE Patentee before: Changsha University of Sciences and Technology Co-patentee before: QINGYUAN TRANSPORTATION ENGINEERING QUALITY SUPERVISION STATION Co-patentee before: EMERGENCY RUSHAN REPAIR CENTER OF QINGYUAN HIGHWAY ADMINISTRATION BUREAU |