CN103175753A - Density determinator and determination method for measuring cement-water system volume change value - Google Patents
Density determinator and determination method for measuring cement-water system volume change value Download PDFInfo
- Publication number
- CN103175753A CN103175753A CN2011104304286A CN201110430428A CN103175753A CN 103175753 A CN103175753 A CN 103175753A CN 2011104304286 A CN2011104304286 A CN 2011104304286A CN 201110430428 A CN201110430428 A CN 201110430428A CN 103175753 A CN103175753 A CN 103175753A
- Authority
- CN
- China
- Prior art keywords
- water
- container
- cement
- density
- container cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to a density determinator and a determination method for measuring a cement-water system volume change value, which belongs to the density determination technical field. The density determinator is composed of a container 1, a sealing gasket 2, an inverted tunnel type container cover 3 and a rubber pipette bulb liquid injector 4. The sealing gasket 2 added between the container 1 and the container cover 3 can be fixed by an elastic clip to form a combination body. The injector 4 can inject the liquid from an upper port of the container cover 3, and can extract the liquid from the combination body. The density determinator use water to replace waterless kerosene to determine the cement density. The determination method is characterized in that the volume change value delta V of cement with mass of M in a certain time can be measured; water is filled in the apparatus to zero graduation, and then the total mass is M1; and the cement is added in the apparatus, water is filled to the zero graduation, and then the total mass is M2. A formula that Rho cement is M/[(M1-M2+M)/Rho water + delta V] is used for calculating the cement density. The density determinator has the advantages of simple structure, convenient operation and low cost. The density determinator and the determination method are especially suitable for determining the cement density, and can be used for determining the density of other materials.
Description
Technical field
The present invention relates to a kind ofly utilize specific test methods to survey to decide the gravimetry instrument of Cement-water System volume change value.Be mainly used in measuring volume change value and the cement density of Cement-water System, also can be used for measuring other material density or with the reacted volume change value of water, belong to the density measurement technical field.
Technical background,
Cement density is to measure the necessary Important Property Parameters of cement specific surface area.In cement production process, need the results of regular determination cement specific surface area.Only have accurately the cement density value just can measure real cement specific surface area, thus cement density to measure be very important.
Classical way is to measure cement density with the liquid displacement process.During mensuration, under stationary temperature, the voluminosity of dividing with the thin shank of Li Shi bottle measures the volume that adds certain mass cement.Because anhydrous kerosene with cement reaction, and anhydrous kerosene easily permeates, than the bubble that is easier to discharge in cement, so liquid commonly used is anhydrous kerosene.But anhydrous kerosene is more expensive, and its volume is subjected to influence of temperature change larger, needs thermostat to keep the constant of temperature.This method minute was wanted more than one hour, and the operation of both having lost time also bothers (the thin shank of Li Shi bottle divides thinner, and sample is difficult for packing into) very much.Not easy cleaning and irritant smell of anhydrous kerosene in addition.
At present, mostly adopt the gas displacement process for the density measurement that precision is higher, instrument is expensive, and cost is high.Be not suitable for the measurement of cement density.
In " Cement-water System reduces test ", a kind of test unit is arranged, can measure the amount that the volume of Cement-water System reduces with hydration time, thereby calculate the volumetric shrinkage of different hydration time Cement-water Systems, but this test unit can not be used for the mensuration of cement density.
Summary of the invention
The invention reside in, design a kind of gravimetry instrument, use specific method of testing, its purpose is: first measure volume change (contraction or expansion) value of Cement-water System, then measure cement density.Realization need not anhydrous kerosene but is used the aquametry cement density.And significantly shorten minute, improve to measure precision, reduce operating personnel's labour intensity.Realize low-cost, convenient, fast and accurate mensuration cement density.
Feature of the present invention, designed gravimetry instrument is comprised of four parts: container 1, sealing gasket 2, the container cover of falling the funnel type 3 and rubber pipette bulb formula liquid injector 4.Wherein the volume of container 1 is 50-1000ml, internal diameter 15-50mm suitable for reading, external diameter 25-60mm, outer thickness 3-10mm; The end opening of the container cover of falling the funnel type 3 and container 1 suitable for reading identical, its upper end is funnel type, and is middle for being carved with the hollow tubular of volume markings, range 0.1-5.0ml, the scale division value is 0.01ml; Sealing gasket 2 seals between container 1 and container cover 3, fixes with Flexible clamp, forms an assembly; Rubber pipette bulb formula liquid injector 4 can with liquid in this assembly of injection suitable for reading of container cover 3, can also be extracted liquid out in assembly.
Method of testing comprises the steps:
The mensuration of a Cement-water System volume change value: get the cement of certain mass (M), in the container 1 of packing into, add a certain amount of water, start simultaneously stopwatch, fully the potpourri in stirred vessel 1, discharge bubble.Sealing gasket 2 and container cover 3 are placed on container 1 top, fix with Flexible clamp after alignment.With the suitable for reading injection of water from container cover 3, make liquid level be raised to the zero graduation line when (as 3 minutes) with injector 4 sometime.Then begin reading, per minute is read once, obtains the volume change value of per minute, thereby obtains the volume change value (Δ V) in a certain period (as 10 minutes).
The mensuration of b cement density: add a certain amount of water in container 1, sealing gasket 2 and container cover 3 are placed on container 1 top, fixes with Flexible clamp after alignment.With the suitable for reading injection of water from container cover 3, make liquid level be raised to the zero graduation line with injector 4, (M weighs
1).Extract water with liquid injector 4 out from the top of container cover 3, arrive container 1 bottleneck when following until liquid level, take off container cover 3, outwell water and dry, the cement of getting certain mass (M) is packed in container 1, adds a certain amount of water, starts simultaneously stopwatch, fully the potpourri in stirred vessel 1, discharge bubble.Sealing gasket 2 and container cover 3 are placed on container 1 top, fix with Flexible clamp after alignment.With the suitable for reading injection of water from container cover 3, make liquid level be raised to zero graduation line during to certain hour (time during with measurement volumes changing value Δ V identical as 10 minutes) with injector 4.(M weighs
2).
The c density calculation:
Computing formula is ρ
Cement=M/[(M
1-M
2+ M)/ρ
Water+ Δ V]
ρ in formula
Cement-cement density, gcm
-3
The quality of M-cement, g;
M
1(wherein the quality of water is made as X to gross mass when-instrument fills water to zero graduation
1), g;
M
2-add cement after and the gross mass when filling water to zero graduation (wherein the quality of water is made as X
2), g;
ρ
WaterThe density of water at-mensuration temperature, gcm
-3
The volume change value of Δ V-Cement-water System (just being punctured into, being expanded to negative), ml.
The derivation of computing formula:
If the quality after container 1, sealing gasket 2 make up with container cover 3 is m
M is arranged
1=m+X
11.
M
2＝m+M+X
2 ②
1.-2.: M
1-M
2=X
1-X
2-M
∴X
1-X
2＝M
1-M
2+M
And X
1-X
2/ ρ
WaterThat quality is the volume of the water that cement is discharged of M,
So ρ
Cement=M/[(X
1-X
2/ ρ
Water)+Δ V]
That is: ρ
Cement=M/[(M
1-M
2+ M/ ρ
Water)+Δ V]
Technique effect of the present invention:
A. good reproducibility, the high (0.001gcm of precision
-3).
B. water replaces anhydrous kerosene, need not thermostat, and cost is low.
C. simple to operate, use this instrument only to need tens minutes just can accurately measure cement density, reduce operating personnel's labour intensity.
Points for attention:
Density measurement is mainly the mensuration of quality and volume, therefore the precision for guaranteeing to measure needs by following requirement operation:
A. experiment is to begin timing when adding water, and test period will be fixed (as 10 minutes);
B. before weighing each time, bottle outer surface must keep dry, and can not have water residual;
C. adding sample and water to get rid of bubble afterwards must be thorough;
Keep liquid level at identical graduation place (preferably zero graduation line) when d. adding water at every turn as far as possible.
Description of drawings:
A. Fig. 1 is the structural drawing of gravimetry instrument of the present invention, and this figure doubles as Figure of abstract.
B. Fig. 2 is the structural drawing of rubber pipette bulb formula liquid injector 4.
Embodiment
The structure of a gravimetry instrument:
The profile of container 1 is the triangular flask type, volume 100ml, internal diameter 30mm suitable for reading, external diameter 40mm, outer thickness 5mm.The end opening of the container cover of falling the funnel type 3 and container 1 suitable for reading identical, its upper end is funnel type, and is middle for being carved with the hollow tubular of volume markings, range 0.4ml, the scale division value is 0.01ml; Sealing gasket 2 is fixed on the place suitable for reading of container 1, fixes with Flexible clamp; Rubber pipette bulb formula liquid injector 4 can with liquid in the injection assembly suitable for reading of container cover 3, can also be extracted liquid out in assembly.
The mensuration of b Cement-water System volume change value:
(this cement is 3.08gcm with the density of kerosene mensuration to take M=100g cement
-3), in the container 1 of packing into, add appropriate water, start simultaneously stopwatch.With the potpourri of the stirring rod interior cement of abundant stirred vessel 1 and water, venting bubble.Water cleans stirring rod, in washing lotion income container 1.Sealing gasket 2 and container cover 3 are placed on container 1 top, fix with Flexible clamp after alignment.With the suitable for reading injection of water from container cover 3, make liquid level be raised to the zero graduation line with injector 4 during 3min.Read number one time since 3 minutes per minutes, read 10 minutes, obtain the volume change value (this Cement-water System volume is the positive number that is that shrinks) of different time, see the following form:
Cement-water System volume change value
As can be seen from the above table: the inner volume changing value was xml in 0 to 3 minute, was unknown.The inner volume changing value was 1.5 * 10 in 3 to 4 minutes
-2Ml, the inner volume changing value was 1.5 * 10 in 4 to 5 minutes
-2Ml, the inner volume changing value was also 1.5 * 10 in 5 to 6 minutes
-2Ml.Can infer X ≈ 3 * 1.5 * 10 thus
-2=4.5 * 10
-2(ml).Volume change value 10 minutes the time is so: Δ V=X+8.8 * 10
-2=4.5 * 10
-2+ 8.8 * 10
-2=13.3 * 10
-2=0.133 (ml).
This numerical value of cement for the same kind of same producer is constant substantially, need not all survey at every turn, can reuse.
The mensuration of c cement density:
Take M=100g cement, standby.
Add entry in container 1, make liquid level a little less than bottleneck, sealing gasket 2 and container cover 3 are placed on container 1 top, fixes with Flexible clamp after alignment.With the top injected water of liquid injector 4 from container cover 3, make liquid level arrive the zero graduation line.M weighs
1=392.59g.
Extract water with liquid injector 4 from the top of container cover 3 out, arrive container 1 bottleneck when following until liquid level, take off container cover 3, outwell water and dry, the 100g cement that claims is before packed in container 1, adding a certain amount of water, start simultaneously stopwatch, fully the potpourri in stirred vessel 1, discharge bubble.Sealing gasket 2 and container cover 3 are placed on container 1 top, fix with Flexible clamp after alignment.With the suitable for reading injection of water from container cover 3, make liquid level be raised to the zero graduation line with injector 4 in the time of 10 minutes.M weighs
2=460.27g.
The calculating of d cement density:
Table look-up the to get density p of room temperature water when being 17 ℃
Water=0.9988gcm
-3,
ρ
Cement=M/[(M
1-M
2+ M/ ρ
Water)+Δ V]
＝100/[(392.59-460.27+100/0.9988)+0.133]
＝3.08(g·cm
-3)
This result with survey with kerosene identical.
Measure again a density (Δ V=0) of not giving birth to the material silica sand of reaction with steeping in water for reconstitution:
Take M=100g silica sand (analyze pure, sio
2〉=99.0% density 2.65gcm
-3), standby.
Add entry in container 1, make liquid level a little less than bottleneck, sealing gasket 2 and container cover 3 are placed on container 1 top, fixes with Flexible clamp after alignment.With the top injected water of liquid injector 4 from container cover 3, make liquid level be raised to the zero graduation line.M weighs
1=392.58g.
Extract water with liquid injector 4 from the top of container cover 3 out, arrive container 1 bottleneck when following until liquid level, take off container cover 3.Leave appropriate water in container 1, the 100g silica sand of weighing before adding.Fully stir after bubble is discharged fully sealing gasket 2 and container cover 3 are placed on container 1 top, fixes with Flexible clamp after alignment.With the top injected water of liquid injector 4 from container cover 3, make liquid level be raised to the zero graduation line.M weighs
2=454.86g.
ρ
Silica sand=100/[(392.58-454.86+100/0.9988)+0]
＝2.65(g·cm
-3)
Measurement result and actual density value are identical.
Annotate: if be the electronic balance weighing of 0.001g with precision, the precision of the density of surveying just can reach 0.001gcm
-3
Claims (5)
1. the gravimetry instrument that can measure Cement-water System volume change value, is characterized in that: be comprised of container 1, sealing gasket 2, the container cover of falling the funnel type 3 and rubber pipette bulb formula liquid injector 4.Be combined into one by Flexible clamp after adding sealing gasket 2 between container 1 and the container cover of falling the funnel type 3.With liquid injector 4 with liquid in this assembly of injection suitable for reading of container cover 3, can also extract liquid out in this assembly.
2. gravimetry instrument according to claim 1, it is characterized in that: the volume of container 1 is 50-1000ml, internal diameter 15-100mm suitable for reading, external diameter 25-120mm, outer thickness 3-10mm.
3. gravimetry instrument according to claim 1, it is characterized in that: the end opening of the container cover of falling the funnel type 3 and container 1 suitable for reading identical, its upper end is funnel type, and is middle for being carved with the hollow tubular of volume markings, range 0.1-5.0ml, the scale division value is 0.01ml.
4. gravimetry instrument according to claim 1 is characterized in that: rubber pipette bulb formula liquid injector 4 can the assembly with liquid injecting container 1, sealing gasket 2 and container cover 3 in, can also extract liquid out in this assembly.
5. the method for testing that can measure the gravimetry instrument of Cement-water System volume change value is completed with following step:
The mensuration of a Cement-water System volume change value: get the cement of certain mass (M), in the container 1 of packing into, add a certain amount of water, start simultaneously stopwatch, fully the potpourri in stirred vessel 1, discharge bubble.Sealing gasket 2 and container cover 3 are placed on container 1 top, fix with Flexible clamp after alignment.With the suitable for reading injection of water from container cover 3, make liquid level be raised to the zero graduation line when (as 3 minutes) with injector 4 sometime.Then begin reading, per minute is read once, obtains the volume change value of per minute, thereby obtains the volume change value (Δ V) of a certain period (as 10 minutes).
The mensuration of b cement density: add a certain amount of water in container 1, sealing gasket 2 and container cover 3 are placed on container 1 top, fixes with Flexible clamp after alignment.With the suitable for reading injection of water from container cover 3, make liquid level be raised to the zero graduation line with injector 4, (M weighs
1).Extract water with liquid injector 4 out from the top of container cover 3, arrive container 1 bottleneck when following until liquid level, take off container cover 3, outwell water and dry, the cement of getting certain mass (M) is packed in container 1, adds a certain amount of water, starts simultaneously stopwatch, fully the potpourri in stirred vessel 1, discharge bubble.Sealing gasket 2 and container cover 3 are placed on container 1 top, fix with Flexible clamp after alignment.With the suitable for reading injection of water from container cover 3, make liquid level be raised to zero graduation line during to certain hour (with measurement volumes changing value Δ V time time identical) with injector 4, (M weighs
2).
C. density calculation:
Computing formula is: ρ=M/[(M
1-M
2+ M)/ρ
Water+ Δ V]
The density of ρ-measured material in formula, g.cm
-3
The quality of M-cement, g;
M
1Gross mass when-instrument fills water to zero graduation, g;
M
2-add cement after and the gross mass when filling water to zero graduation, g;
ρ
WaterThe density of water at-mensuration temperature, g.cm
-3
The volume change value of Δ V-Cement-water System (just being punctured into, being expanded to negative), ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104304286A CN103175753A (en) | 2011-12-21 | 2011-12-21 | Density determinator and determination method for measuring cement-water system volume change value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104304286A CN103175753A (en) | 2011-12-21 | 2011-12-21 | Density determinator and determination method for measuring cement-water system volume change value |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103175753A true CN103175753A (en) | 2013-06-26 |
Family
ID=48635762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104304286A Pending CN103175753A (en) | 2011-12-21 | 2011-12-21 | Density determinator and determination method for measuring cement-water system volume change value |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103175753A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483225A (en) * | 2014-12-31 | 2015-04-01 | 中国石油天然气股份有限公司 | Determination method of volume expansibility and contractibility of oil well cement solidification material |
| CN105891047A (en) * | 2016-03-31 | 2016-08-24 | 中国环境科学研究院 | Determination method and device for organic solid waste material particle density |
| CN108254408A (en) * | 2018-01-24 | 2018-07-06 | 武汉优城科技有限公司 | The device and method that cement paste volume freely changes are measured under a kind of programmable temperature control |
| CN108445191A (en) * | 2018-05-14 | 2018-08-24 | 中国水利水电科学研究院 | The measurement method and measuring apparatus of soil ice content in a kind of frozen soil |
| CN113063697A (en) * | 2020-07-10 | 2021-07-02 | 中铁六局集团有限公司 | Measuring assembly for serous performance and measuring method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2244723Y (en) * | 1995-11-23 | 1997-01-08 | 颜修祥 | Apparatus for testing cement density |
| CN2570786Y (en) * | 2002-09-02 | 2003-09-03 | 鲍光玉 | Apparatus for determining concrete contraction percentage |
| US20080053221A1 (en) * | 2006-09-06 | 2008-03-06 | Allen Thomas E | Method for determining absolute density of cement slurry |
| CN101349630A (en) * | 2008-09-01 | 2009-01-21 | 王云平 | Measuring apparatus and method for measuring density using the same |
-
2011
- 2011-12-21 CN CN2011104304286A patent/CN103175753A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2244723Y (en) * | 1995-11-23 | 1997-01-08 | 颜修祥 | Apparatus for testing cement density |
| CN2570786Y (en) * | 2002-09-02 | 2003-09-03 | 鲍光玉 | Apparatus for determining concrete contraction percentage |
| US20080053221A1 (en) * | 2006-09-06 | 2008-03-06 | Allen Thomas E | Method for determining absolute density of cement slurry |
| CN101349630A (en) * | 2008-09-01 | 2009-01-21 | 王云平 | Measuring apparatus and method for measuring density using the same |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483225A (en) * | 2014-12-31 | 2015-04-01 | 中国石油天然气股份有限公司 | Determination method of volume expansibility and contractibility of oil well cement solidification material |
| CN105891047A (en) * | 2016-03-31 | 2016-08-24 | 中国环境科学研究院 | Determination method and device for organic solid waste material particle density |
| CN105891047B (en) * | 2016-03-31 | 2018-09-21 | 中国环境科学研究院 | The assay method of organic solid waste material particles density |
| CN108254408A (en) * | 2018-01-24 | 2018-07-06 | 武汉优城科技有限公司 | The device and method that cement paste volume freely changes are measured under a kind of programmable temperature control |
| CN108445191A (en) * | 2018-05-14 | 2018-08-24 | 中国水利水电科学研究院 | The measurement method and measuring apparatus of soil ice content in a kind of frozen soil |
| CN108445191B (en) * | 2018-05-14 | 2019-09-13 | 中国水利水电科学研究院 | The measurement method and measuring device of soil ice content in a kind of frozen soil |
| CN113063697A (en) * | 2020-07-10 | 2021-07-02 | 中铁六局集团有限公司 | Measuring assembly for serous performance and measuring method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104007135B (en) | Earth working material change in volume method of testing | |
| CN103175753A (en) | Density determinator and determination method for measuring cement-water system volume change value | |
| Cox et al. | The specific gravity/salinity/temperature relationship in natural sea water | |
| CN101470016B (en) | Apparatus for measuring volume by built-in method | |
| CN103674156B (en) | A kind of metering method utilizing laboratory micro gas-metering device | |
| CN202735169U (en) | Device for testing shrinkage of concrete filled steel tubular under effect of vertical load | |
| CN103487564A (en) | Double-chamber determinator for volume frost-heaving ratio of frozen soil | |
| CN108759733A (en) | With the device and method of gasmetry irregularly shaped object volume | |
| CN102323199B (en) | Porosity determination experiment design method and design system thereof | |
| CN112129685B (en) | Method for testing early-age concrete pore structure based on nuclear magnetic resonance | |
| CN102937625A (en) | Cement-based material early-stage elasticity modulus measuring method and measuring device | |
| CN108627442A (en) | A kind of celluar concrete porosity device for quick testing | |
| CN205941552U (en) | Active model of verifying of concrete aggregate alkali | |
| RU174038U1 (en) | LABORATORY INSTALLATION FOR MEASURING THE BIOGAS VOLUME FORMED BY DECOMPOSITION OF ORGANIC MATERIALS UNDER ANAEROBIC CONDITIONS | |
| CN109827869A (en) | A kind of device and method measuring sticky fluid density | |
| CN103245554A (en) | Early-stage elasticity modulus measurement method and device for cement-based materials based on simple support structure | |
| CN113109234B (en) | Low-oil-saturation seepage rule correction method for heavy water nuclear magnetism bound water detection | |
| CN106093359B (en) | A kind of Alkali-activity of Concrete Aggregate verification method and its model | |
| CN103033440A (en) | Method for testing air content of concrete mixture | |
| RU2708714C1 (en) | Method for determination of density of solid bodies and device for its implementation | |
| CN204044152U (en) | A kind of device measuring cement-based material self-constriction amount | |
| CN103604478B (en) | A kind of constant volume container and using method thereof | |
| CN204462415U (en) | A kind of device utilizing hydrostatic pressure to measure acceleration of gravity | |
| JP2013200204A5 (en) | ||
| RU196401U1 (en) | Laboratory apparatus for determining the mass fraction of the main substance in alkali metal hydrides and carbides |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130626 |