CN104458806B - The assay device and its test method of the temperature measurements such as initial hydration of cement exothermic character - Google Patents
The assay device and its test method of the temperature measurements such as initial hydration of cement exothermic character Download PDFInfo
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Abstract
A kind of assay device and its test method of the temperature measurements such as initial hydration of cement exothermic character, the assay device include constant temperature water bath system, temperature-sensing system and isothermal water-adding system；Constant temperature water bath system is made up of semiconductor refrigerating/heat piece, fin, and temperature control is by Single-chip Controlling；Eccentric stirring in water bath is provided with water-bath kettle；It is used to sense cement testing sample and bath temperature positioned at the critesistor of centre bottom and outer lower portion in specimen cup pond, by the temperature difference of both balanced bridge and electronic amplification system detection, and using this temperature difference as the sign of initial hydration of cement exothermic character；Aquation water in spiral type plastic water injection pipe is injected in testing sample after reaching hygral equilibrium in a water bath, and this mode of adding water can ensure that the temperature of the temperature and testing sample of aquation water reaches unanimity；Complete and accurate ground measurement first exothermic peak of initial hydration of cement.
Description
First, technical field
The present invention relates to hydration heat of cement testing equipment and method and technology field, specifically a kind of initial hydration of cement heat release
The assay device and test method of the temperature measurements such as characteristic, more particularly to a kind of isothermal adds water mode, and with hydrated cementitious sample temperature
Degree and bath temperature difference variation as initial hydration of cement exothermic character sign, and in measurement process environment temperature
Keep constant.
2nd, background technology
Initial hydration of cement exothermic character refers to the cement size of aquation release heat and release in 0～tens min
Speed.Found according to conventional research, cement has substantial connection with many properties of cement in initial hydration heat characteristic,
Therefore determine cement to start the exothermic character to tens min in aquation is highly important to understanding and grasping cement performance.
The hydration heat characteristic of cement refers to the size of cement release heat in hydration process and the speed of release, typically passes through
The range of temperature and rate of change of hydrated sample is showing.Conventional hydrated cementitious exothermic character metering system has three kinds,
A kind of is isothermal metering system, measures from sample and spill into the heat of environment in cement hydration process, while keeping the temperature of environment
Degree is constant, and this mode obtains rate of heat release of the cement in hydration process, can calculate in specified hydration age through integration
Heat release total amount；A kind of is adiabatic metering system, and the heat that cement is discharged in hydration process is outer to be dissipated, and the heat of accumulation makes sample
Product temperature degree rises, and the size of accumulation heat is measured with this, can obtain heat release speed of the cement in hydration process by differential
Rate；A kind of is chemolysis thermal measurement mode, is discharged when being dissolved by some chemical reagent according to hydrated sample under each hydration age
Heat with it is unhydrated when total heat of solution difference, calculate cement sample accumulation heat for discharging in the case where age is specified.Chemistry
Heat of solution metering system can only measure the hydration heat amount compared with long-age, and operate relatively complicated, chemical reagent corrosivity used
Greatly, it is dangerous, therefore wait gentle both metering systems of thermal insulation more commonly used.
During using isothermal or adiabatic method measurement hydrated cementitious exothermic character, generally require in advance cement according to certain
The ratio of mud adds water after stirring makes cement slurry, just measures the thermal discharge size of slurry, causes stirring pulping process and dress sample
Hydration heat characteristic cannot be measured in that a few minutes, the information of the hot release characteristic of initial hydration of cement is missed.
Heat that cement is discharged during initial hydration less, the change for causing sample temperature be not it is obvious that
Changes of hydrated cementitious sample temperature is directly turned to the sign of hydration heat characteristic, tend to by ambient temperature slowly,
The impact of minor variations, therefore measurement cement, in initial hydration exothermic character, measuring instrument needs accurately temperature control and arranges
Apply.
3rd, the content of the invention
It is an object of the invention to provide a kind of assay device of the temperature measurement such as initial hydration of cement exothermic character and test side
Method, impact of the aquation water to cement sample temperature to be measured when can reduce water filling, in elimination measurement process, bath temperature is slow
Slowly, impact of the minor variations to hydration heat feature measurement, first aquation that be complete, accurately measuring initial hydration of cement are put
Thermal spike.
The present invention realizes above-mentioned purpose by following technical proposals method：A kind of initial hydration of cement exothermic character isothermal is surveyed
The assay device of amount, including specimen cup, aquation water outlet, specimen cup pond, stirring in water bath device, semiconductor refrigerating/heat piece,
Fin, aquation water water injection pipe, the first critesistor, the second critesistor, water filling port and water-bath kettle, semiconductor refrigerating/
Piece is heated installed in the position of 1/3rd height of water-bath kettle, aquation water water injection pipe is placed in specimen cup pond Jing after spiralization setting
Lower section, after constant temperature enough long-time aquation coolant-temperature gage can be made to reach unanimity with testing sample temperature.Stirring in water bath device is in
Be eccentrically set in water-bath kettle, the stirring vane of stirring in water bath device positioned at the fin contacted with water-bath lower limb but do not touch
Spiral-form portion of the aquation with water water injection pipe, aquation water water injection pipe one end are provided with the water filling port that can be inserted by syringe, separately
One end is provided with aquation water outlet, and the first temperature-sensitive electricity for sensing sample temperature is posted at the center of specimen cup pond inner bottom part
Resistance, the circular metal conducting strip for having a level above the critesistor is close to therewith, when specimen cup inserts specimen cup pond, should
Metal conducting strip can be in close contact with specimen cup bottom, and outside specimen cup pond, side-lower posts hot for sensing the second of bath temperature
Quick resistance is simultaneously dipped in water-bath, and using the temperature difference expressed by the first critesistor and the second critesistor as cement initial water
Change the sign of exothermic character.
The specimen cup carries specimen cup lid.
Two faces of the semiconductor refrigerating/heat piece are glued with fin, a fin stretch in water-bath kettle with water
Bath contact, another fin are placed in outside water-bath kettle and are furnished with the electric fan of a direct current 12V.
The water-bath kettle bottom is provided with poppet, and the frame face of poppet is provided with hole, and specimen cup pond passes through the hole and is fastened on pad
On frame, specimen cup pond top edge exposes water-bath face about 0.5cm.
The aquation water water injection pipe is the plastic material for meeting medical requirement.
Described specimen cup is in flat cylinder, is the good metal material of heat conduction, for placing testing sample.
A kind of test method of the assay device suitable for temperature measurements such as described initial hydration of cement exothermic characters, including
Following steps：
(1) semiconductor refrigerating/backing, the power supply of stirring in water bath device are opened, the water of needs is set in the range of 20～30 DEG C
Bath thermostat temperature, the water-bath after a period of time reach temperature constant state, constant-temperature precision ± 0.005 DEG C；
(2) it is dry by 0.080mm square hole screens, homogenizing and 65～70 DEG C/3h 4～8g to be weighed with the balance of one of percentage precision
Cement testing sample after dry, is inserted in specimen cup 1 several times, is gently transferred sample in cup with weighing scoop, is made in cup at the beginning of sample
Step is evenly distributed, and then gently vibrates one side rotary sample cup 1 on smooth desktop, is formed sample in cup and is piled up everywhere
Even density, capillary tube are evenly distributed, the cement powder fixed bed of surfacing；
(3) volume markings are immersed one outlet and fills aquation water through the syringe insertion water filling port demarcated
Beaker in, syringe is inserted in water filling port, multiple aspirating syringe is so that no bubble in water injection pipe, is completely filled with aquation
With water, then that syringe pump is to the corresponding volume markings of 2.0mL and fixed, the ratio of mud now is 0.50, by water injection pipe
Outlet remove and fill the beaker of aquation water, dry the surface of outlet and the inner surface of specimen cup lid, to make cement " quiet
State " aquation is smoothed out, and the ratio of mud should be selected in the range of 0.40～0.60 and fixed so that measurement result have it is comparable
Property；
(4) insulation cover of specimen cup is covered, specimen cup pond bottom centre position is inserted after specimen cup bottom is cleaned, is made
Specimen cup bottom is contacted well with the conducting strip surface of critesistor, covers the insulation cover of water-bath kettle；
(5) in the state of water-bath has been enter into constant temperature, specimen cup is inserted behind glass pond, by computer data acquisition system
The difference variation trend of observation bath temperature and cement testing sample temperature, after the constant temperature water bath of 1h or longer time, when
When both temperature difference are balanced, leggiero promote injector piston to the end, the aquation water of respective volume is injected into water to be measured
In mud sample, cement starts aquation；
(6) after cement starts aquation, the first critesistor of balanced bridge and electronic amplification system measuring samples cup bottom
The temperature difference sensed by the second critesistor being dipped in water-bath with specimen cup pond outer lower portion, expresses two in the form of mV values
The temperature difference of person, and Jing after digital-to-analogue conversion gathered and recorded by computer, the change of the mV values is used for initial hydration of cement heat release
The sign of characteristic.
The present invention has following outstanding advantages：
1st, cement sample to be measured need not be prepared into slurry in advance, aquation water is directly injected into sample when starting measurement
In, it is ensured that at the very start being capable of the temperature change that occurs because of aquation of measuring samples in hydrated cementitious.
2nd, initial hydration of cement exothermic character is measured by the way of isothermal filling aquation water, aquation water first passes through water
Bath carries out constant temperature, then just notes in cement sample, and aquation coolant-temperature gage can be treated survey sample temperature by this mode of adding water
Impact be preferably minimized.
3rd, the temperature of measuring samples and water-bath is distinguished by two critesistor, cement is characterized with both difference variations
Initial hydration exothermic character, this method can eliminate measurement process in the slow of bath temperature, minor variations to initial hydration of cement
The impact of exothermic character measurement, completely, accurately measures first hydration heat peak.
4th, illustrate
Fig. 1 is the structural representation of the assay devices of temperature measurement such as initial hydration of cement exothermic character of the present invention.
Fig. 2 is at the beginning of the assay device measurement cement using temperature measurements such as initial hydration of cement exothermic characters of the present invention
The result of beginning hydration heat characteristic.
5th, specific embodiment
Below by embodiment, the invention will be further described.
Embodiment 1
As shown in figure 1, the assay device of the temperature measurement such as initial hydration of cement exothermic character of the present invention, including sample
Cup 1, specimen cup lid 2, aquation water outlet 3, specimen cup pond 4, stirring in water bath device 5, semiconductor refrigerating/heat piece 6, fin
7th, aquation water water injection pipe 8, the first critesistor 9, the second critesistor 10, water filling port 11 and water-bath kettle 12, quasiconductor system
Cold/to heat piece 6 installed in the position of about 1/3rd height of water-bath kettle 12, two face has aluminium heat sink to be close to therewith
, a fin 7 is contacted with water-bath in stretching into water-bath kettle 7, another fin is placed in outside water-bath kettle and is furnished with a direct current
The electric fan of 12V is used to drive away the hot or cold of the fin, and three callosities are placed on water-bath kettle bottom, open on the frame face of poppet
There is the hole of suitable diameter, specimen cup pond 4 passes through the hole and is fastened on poppet, and specimen cup pond top edge exposes water-bath face about
0.5cm, aquation water water injection pipe 8 are placed in the lower section in specimen cup pond 4 Jing after spiralization setting, by 12 top Motor drive of water-bath kettle
Stirring in water bath device 5 stretch in water-bath kettle 12, paddle is below the lower limb of the fin 7 contacted with water-bath but does not touch
Spiral-form portion of the aquation with water water injection pipe 8, the center of 4 inner bottom part of specimen cup pond post the first critesistor 9, the critesistor
The top circular metal conducting strip that has a level be close to therewith, when specimen cup 1 inserts specimen cup pond, the metal conducting strip can
It is in close contact with 1 bottom of specimen cup, 4 outer side-lower of specimen cup pond posts the second critesistor 10 and is dipped in water-bath.The sample
Product cup 1 carries specimen cup lid 2, and near fin 7, stirring in water bath device 5 is in be eccentrically set on water-bath kettle to described stirring in water bath device 5
In 12, fin 7 is placed in water-bath kettle 12, and 8 one end of aquation water water injection pipe is provided with the water filling port 11 that can be inserted by syringe,
The other end is provided with aquation water outlet 3, and the critesistor is two, and the first critesistor 9 is located at 4 inner bottom part of specimen cup pond
Centre, for sensing sample temperature, the second critesistor 10 is affixed on 4 outer lower portion of specimen cup pond and is dipped in water-bath, for passing
Sense bath temperature, and using the temperature difference expressed by this two critesistor as the sign of initial hydration of cement exothermic character.
Described specimen cup 1 is in flat cylinder, is the good metal material of heat conduction, for placing testing sample.Cement
Sample 13 is placed in specimen cup 1.
Near fin 7, in being eccentrically set in water-bath kettle 12, this more has stirring in water bath device 5 described stirring in water bath device 5
Being uniformly distributed beneficial to bath temperature.
Described aquation water water injection pipe 8 is twist placed in the water-bath in water-bath kettle 12 below specimen cup pond 4, aquation
With water water injection pipe 8 using the plastic material for meeting medical requirement.
Embodiment 2
The present embodiment is the test method of the assay device using temperature measurements such as described initial hydration of cement exothermic characters,
Comprise the steps：
(1) semiconductor refrigerating/backing 6, the power supply of stirring in water bath device 5 are opened, arranges what is needed in the range of 20～30 DEG C
Constant temperature water bath temperature, the water-bath after a period of time reach temperature constant state, and constant-temperature precision is better than ± 0.005 DEG C；
(2) it is dry by 0.080mm square hole screens, homogenizing and 65～70 DEG C/3h 4.00g to be weighed with the balance of one of percentage precision
Cement sample to be measured 13 after dry, is inserted in specimen cup 1 several times, is gently transferred water in the cup mud sample 13 with weighing scoop, is made cup
Interior cement sample 13 is tentatively evenly distributed, and then gently vibrates one side rotary sample cup 1 on smooth desktop, makes sample in cup
Bulk density is uniform everywhere, capillary tube is evenly distributed, the cement powder fixed bed of surfacing for product formation.Weighed sample matter
Amount is typically selected in the range of 4～8g, and should fix the sample amount of weighing so that measurement result has comparability；
(3) volume markings are immersed one outlet 3 and fills aquation use through the syringe insertion water filling port 11 demarcated
In the beaker of water, multiple aspirating syringe piston simultaneously exits syringe, so that aquation no bubble in water water injection pipe 8, all
Full of aquation water, syringe piston is pumped to into the corresponding volume markings of 2.0mL then and is fixed, the ratio of mud now is
0.50.The outlet 3 of water injection pipe is removed the beaker for filling aquation water, dry outlet 3 surface and specimen cup lid 2 it is interior
Surface.To be smoothed out cement " static state " aquation, the ratio of mud should be selected in the range of 0.40～0.60 and fixed, so as to survey
Amount result has comparability；
(4) insulation cover 2 of specimen cup 1 is covered, 4 bottom centre position of specimen cup pond after 1 bottom of specimen cup is cleaned, is inserted,
1 bottom of specimen cup and the conducting strip surface of the first critesistor 9 is contacted well, cover the insulation cover of water-bath kettle 12；
(5) in the state of water-bath has been enter into constant temperature, specimen cup 1 is inserted behind glass pond 4, by computer data acquiring system
Overall view examines the difference variation trend of bath temperature and cement sample temperature to be measured, after the constant temperature water bath of 1h or longer time,
When both temperature difference are balanced, injector piston is leggiero promoted to the end, the aquation water of respective volume is injected into be measured
In cement sample, cement starts aquation.
(6) after cement starts aquation, the first critesistor of 1 bottom of balanced bridge and electronic amplification system measuring samples cup
9 and the temperature difference that sensed of the second critesistor 10 for being dipped in water-bath of 4 outer lower portion of specimen cup pond, the table in the form of mV values
Up to both temperature difference, and Jing after digital-to-analogue conversion gathered and recorded by computer.The change of the mV values is used for initial hydration of cement
The sign of exothermic character.
The temperature measurements such as the initial hydration of cement exothermic character of the present embodiment amount to 46min, and measurement result is as shown in Figure 2.From
Fig. 2 is can be seen that from the beginning of injection aquation water, and cement starts hydration heat, as time went on, reaches in 2.3min or so
To heat release and the balance of radiating, an extreme point is formed, subsequent exotherm begins to decline, and aquation to 35min or so curve is bright
Show to walk flat, show that hydrated cementitious enter incubation period.The heat release of cement sample initial hydration can be evaluated according to the form of curve special
Property, according to research experience, using aquation 20min as demarcation line, curve before defines first of initial hydration of cement and puts
Thermal spike, peak value is bigger, the corresponding hydration time of peak value is shorter, shows that sample initial hydration rate of heat release is bigger；First heat release
The area that peak is surrounded is bigger, shows that initial hydration of cement thermal discharge is bigger, and these all reflect the water of cement sample very early stage
Change activity is higher, therefore the area that the peak value size of first exothermic peak, the corresponding hydration time of peak value, the first exothermic peak are surrounded,
Can be used as the sign of cement sample initial hydration exothermic character.
Operation principle and process：
Constant temperature water bath is realized by semiconductor refrigerating/backing 6, is controlled by single-chip microcomputer PID temperature control system, constant temperature temperature
Degree can be arranged in the range of 20～30 DEG C, and constant temperature water bath precision is better than ± 0.005 DEG C.Using balanced bridge and electronic amplification system
The difference variation of measurement critesistor 9 and the sensing of critesistor 10, original temperature difference output are mV, by measuring samples and
MV difference between water-bath, you can obtain by sample temperature variation characteristic caused by hydrated cementitious, this design eliminate water-bath temperature
The impact that slow, the minor variations of degree are measured to initial hydration of cement exothermic character；Eccentric agitating device is provided with water-bath kettle
5, near fin 7, temperature is uniform everywhere can more effectively to make water-bath for paddle；Spiral type plastic tube full of aquation water
8 immerse in waters bath with thermostatic control and are kept for the sufficiently long time, wait that managing the interior temperature of aquation water tends to one with the temperature of testing sample
After cause, just by the aquation in water injection pipe with water injection sample, this mode of adding water treats can the temperature of aquation water
The impact for surveying sample temperature is preferably minimized, it is ensured that the accuracy of hydration heat feature measurement.When starting measurement, connect water filling port
11 syringe injects the moisture of prescribed volume, water of the aquation with respective volume in water water injection pipe 8 into aquation water water injection pipe 8
Change water is then injected in cement sample 13 by outlet 3, and the aquation for injecting out water is by testing sample fixed bed
To sample everywhere, the mode of adding water of this " static state " is formed when will not destroy initial hydration of cement capillary diffusion in particle surface
Initial hydration product layer, maintain the state of initial hydration to greatest extent.
Claims (1)
1. the test method of the temperature measurement such as a kind of mud initial hydration exothermic character, it is characterised in that comprise the steps：
（1）Unlatching semiconductor refrigerating/heat piece, the power supply of stirring in water bath device, arranges the water-bath of needs in the range of 20～30 DEG C
Thermostat temperature, the water-bath after a period of time reach temperature constant state, constant-temperature precision ± 0.005 DEG C；
（2）4～8g is weighed with the balance of one of percentage precision to be dried by 0.080 mm square hole screens, homogenizing and 65～70 DEG C/3h
Cement testing sample afterwards, is inserted in specimen cup several times, is gently transferred sample in cup with weighing scoop, sample in cup is tentatively divided
Cloth is uniform, then gently vibrates one side rotary sample cup on smooth desktop, makes sample in cup form bulk density everywhere
Uniformly, capillary tube be evenly distributed, the cement powder fixed bed of surfacing；
（3）By volume markings through the syringe insertion water filling port demarcated, outlet is immersed a burning for filling aquation water
In cup, by syringe insertion aquation with water water filling port, multiple aspirating syringe is so that no bubble in water injection pipe, is completely filled with
Aquation water, then that syringe pump is to the corresponding volume markings of 2.0 mL and fixed, the ratio of mud now is 0.50, will note
The aquation water outlet of water pipe removes the beaker for filling aquation water, dries surface and the specimen cup lid of aquation water outlet
Inner surface, to be smoothed out cement " static state " aquation, the ratio of mud is selected in the range of 0.40～0.60 and fixed so that
Measurement result has comparability；
（4）The insulation cover of specimen cup is covered, specimen cup pond bottom centre position is inserted after specimen cup bottom is cleaned, specimen cup is made
Bottom is contacted well with the conducting strip surface of the first critesistor, covers the insulation cover of water-bath kettle；
（5）In the state of water-bath has been enter into constant temperature, specimen cup is inserted behind glass pond, observed by computer data acquisition system
The difference variation trend of bath temperature and cement testing sample temperature, after the constant temperature water bath of 1h or longer time, when both
The temperature difference balance when, leggiero promote injector piston to the end, the aquation water of respective volume is injected into cement-like to be measured
In product, cement starts aquation；
（6）After cement starts aquation, first critesistor and sample of balanced bridge and electronic amplification system measuring samples cup bottom
The temperature difference sensed by the second critesistor that product cup pond outer lower portion is dipped in water-bath, both expression in the form of mV values
The temperature difference, and Jing after digital-to-analogue conversion gathered and recorded by computer, the change of the mV values is used for initial hydration of cement exothermic character
Sign,
The assay device of the test method of the temperature measurements such as initial hydration of cement exothermic character, including the water water outlet of specimen cup, aquation
Mouth, specimen cup pond, stirring in water bath device, semiconductor refrigerating/heat piece, fin, aquation water water injection pipe, the first critesistor,
Second critesistor, water filling port and water-bath kettle, semiconductor refrigerating/heat piece installed in the position of 1/3rd height of water-bath kettle
Put, aquation water water injection pipe is placed in the lower section in specimen cup pond Jing after spiralization setting, stirring in water bath device is in be eccentrically set on water-bath
In kettle, the stirring vane of stirring in water bath device positioned at the fin contacted with water-bath lower limb but do not touch aquation water water injection pipe
Spiral-form portion, aquation water water injection pipe one end be provided with can by syringe insert water filling port, the other end be provided with aquation use
Water outlet, the center of specimen cup pond inner bottom part post the first critesistor for sensing sample temperature, the first critesistor
The top circular metal conducting strip that has a level be close to therewith, when specimen cup inserts specimen cup pond, the metal conducting strip can
It is in close contact with specimen cup bottom, outside specimen cup pond, side-lower is posted for sensing the second critesistor of bath temperature and being dipped in
In water-bath, and using the temperature difference expressed by the first critesistor and the second critesistor as the table of initial hydration of cement exothermic character
Levy,
The specimen cup carries specimen cup lid,
Two faces of the semiconductor refrigerating/heat piece are glued with fin, and a fin is connect with water-bath in stretching into water-bath kettle
Touch, another fin is placed in outside water-bath kettle and is furnished with the electric fan of a direct current 12V,
The water-bath kettle bottom is provided with poppet, and the frame face of poppet is provided with hole, and specimen cup pond passes through the hole and is fastened on poppet,
Specimen cup pond top edge exposes 0.5 cm of water-bath face,
Described specimen cup is in flat cylinder,
The aquation water water injection pipe is the plastic material for meeting medical requirement.
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| CN104502407B (en) * | 2014-10-28 | 2017-04-26 | 广西大学 | Isothermal-measure testing apparatus for cement initial hydration exothermic characteristic |
| CN107608425A (en) * | 2017-09-27 | 2018-01-19 | 中国科学院理化技术研究所 | A kind of constant temperature system |
| CN112445248A (en) * | 2019-08-27 | 2021-03-05 | 中国建筑材料科学研究总院有限公司 | Constant temperature control system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2329965Y (en) * | 1998-03-16 | 1999-07-21 | 姜治邦 | Tester for cement hydration heat |
| CN201215559Y (en) * | 2008-06-06 | 2009-04-01 | 无锡建仪仪器机械有限公司 | Tester for cement hydration heat |
| JP2010276366A (en) * | 2009-05-26 | 2010-12-09 | Tokyo Riko:Kk | Reaction speed measuring instrument |
| CN201837605U (en) * | 2010-09-25 | 2011-05-18 | 中建商品混凝土有限公司 | Hydration temperature-rise tester for concrete |
| CN104502407A (en) * | 2014-10-28 | 2015-04-08 | 广西大学 | Isothermal-measure testing apparatus for cement initial hydration exothermic characteristic |
-
2014
- 2014-10-28 CN CN201410592395.9A patent/CN104458806B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2329965Y (en) * | 1998-03-16 | 1999-07-21 | 姜治邦 | Tester for cement hydration heat |
| CN201215559Y (en) * | 2008-06-06 | 2009-04-01 | 无锡建仪仪器机械有限公司 | Tester for cement hydration heat |
| JP2010276366A (en) * | 2009-05-26 | 2010-12-09 | Tokyo Riko:Kk | Reaction speed measuring instrument |
| CN201837605U (en) * | 2010-09-25 | 2011-05-18 | 中建商品混凝土有限公司 | Hydration temperature-rise tester for concrete |
| CN104502407A (en) * | 2014-10-28 | 2015-04-08 | 广西大学 | Isothermal-measure testing apparatus for cement initial hydration exothermic characteristic |
Non-Patent Citations (2)
| Title |
|---|
| 回转窑与立窑熟料混合配制水泥的水化特性研究;梁英等;《水泥》;20011231(第2期);第10-12页 * |
| 水泥水化机理及其研究方法;李林香等;《混凝土》;20111231(第6期);第76-80页 * |
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