CN102175555B - Method for quickly analyzing phase component of building gypsum - Google Patents
Method for quickly analyzing phase component of building gypsum Download PDFInfo
- Publication number
- CN102175555B CN102175555B CN 201110033606 CN201110033606A CN102175555B CN 102175555 B CN102175555 B CN 102175555B CN 201110033606 CN201110033606 CN 201110033606 CN 201110033606 A CN201110033606 A CN 201110033606A CN 102175555 B CN102175555 B CN 102175555B
- Authority
- CN
- China
- Prior art keywords
- content
- sample
- gypsum
- constant weight
- water
- 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.)
- Expired - Fee Related
Links
Abstract
The invention belongs to the technique of building material analysis and relates to a method for quickly analyzing a phase component of building gypsum. The defects in the prior art are as follows: the demand on analytical instrument is high, the demand on the test condition is high, the analysis time is long and the operation steps are complex. The method comprises the following three steps: for quickly finishing the phase component analysis for the building gypsum, by utilizing the principle that the building gypsum loses the adhered water at 50 plus/minus 5 DEG C, loses all the crystal water above 180 DEG C and can have hydration reaction with water, the anhydrous gypsum in the building gypsum can combine with water in a 95% ethanol solution so as to form the hemi-hydrated gypsum, and the dihydrate gypsum cannot be generated by combining the hemi-hydrated gypsum with the water, wherein the three steps are as follows: measuring the contents of the adhered water and the anhydrous gypsum, measuring the content and purity of the hemi-hydrated gypsum, and measuring the content of the dihydrate gypsum. The method provided by the invention has the advantages that the analysis device is simple, only one halogen moisture tester is required, the test time is short, and the analysis result has stability and repeatability.
Description
Technical field
The invention belongs to the building materials analytical technology, specifically a kind of quick phase composition analytical approach of plaster of Paris.
Background technology
Plaster of Paris is made through high-temperature calcination by dihydrate gypsum, with β semi-hydrated gypsum CaSO
41/2H
2O is a principal ingredient.In calcination process, tend to produce a certain amount of solubility anhydrite III type CaSO
4The dihydrate gypsum CaSO that does not dewater
42H
2O.
Prior art shows, the performance of plaster of Paris and its semi-hydrated gypsum that contains, solubility anhydrite and the ratio of the dihydrate gypsum three-phase of dehydration is not relevant, relevant with its impurity that contains yet.This just needs accurately to analyze the content of each phase in the plaster of Paris, could control the quality of plaster of Paris.
Have much both at home and abroad, like the aquation method, excite aquation method, alcoholic solution aquation method, vacuum drying or atmosphere pressure desiccation, dehydration-reducing process etc. about the analytical approach of measuring the plaster of Paris phase composition.The shortcoming of prior art is: analytical instrument requires high; Analysis condition is required high; Analysis time is long; Complex operation step; Can not satisfy impact analysis result's greatly accuracy and stability if there is one in these factors.
As the starting material of the various gypsum based gel materials of preparation, the analyzing and testing of plaster of Paris phase composition is absolutely necessary, it can control the quality of Binder Materials in the source; For the manufacturer of extensive calcining plaster of Paris, analysis speed and accuracy are particularly important.Therefore invent that a kind of analysis speed is fast, analysis result accurately the quick phase composition analytical approach of plaster of Paris be very necessary.
Summary of the invention
The purpose of this invention is to provide that a kind of analysis speed is fast, the analysis result quick phase composition analytical approach of plaster of Paris accurately.
The objective of the invention is to realize like this:
1, a kind of quick phase composition analytical approach of plaster of Paris, step is following:
(1) attached water and anhydrite Determination on content;
Accurately take by weighing 5 gram sample weights with moisture determination instrument, be designated as g
1, be accurate to 0.001g; Add 5ml 95% ethanolic solution, sample moistening evenly after, moisture determination instrument is transferred to 50 ℃, dry to constant weight; Sample weight g after the record constant weight
2
Attached water content and anhydrite content are calculated as follows:
Work as g
1＞g
2The time: W=(g
1-g
2)/g
1* 100%; X=0;
Work as g
1＜g
2The time: W=0; X=15.11 (g
2-g
1)/g
1* 100%.
In the formula: W---attached water content, %;
X---III type anhydrite content, %;
g
1---add the preceding sample mass of 95% ethanolic solution, the unit gram;
g
2---add sample mass after the 95% ethanolic solution oven dry constant weight, the unit gram;
(2) semi-hydrated gypsum content and purity Determination on content;
Accurately take by weighing sample 5g with moisture determination instrument, be accurate to 0.001g, be designated as m
1In capacity distilled water, soak more than the 5h, then moisture determination instrument is transferred to 50 ℃, dry this sample, be designated as m to constant weight
2At last moisture determination instrument is transferred to 200 ℃, heat this sample, be designated as m to constant weight
3
Semi-hydrated gypsum content is calculated as follows:
Work as g
1＞g
2The time: Y=5.37 (c+W) * 100%
Work as g
1＜g
2The time: Y=5.37 (c-X * 0.265) * 100%
Wherein, c=m
2/ m
1-1;
Purity is calculated as follows: S=e/0.2093 * 100%
E=1-m wherein
3/ m
2
In the formula: Y-semi-hydrated gypsum content, %;
W-attached water content, %;
C-sample immersion increment;
S-purity, %;
E-dihydrate gypsum water of crystallization content;
m
1Sample mass before the-immersion, the unit gram;
m
2Sample mass after the-immersion oven dry constant weight, the unit gram;
m
3Sample appearance is heavy after the-dehydration, the unit gram;
g
1-adding the preceding sample mass of 95% ethanolic solution, unit restrains;
g
2Sample mass after the-adding 95% ethanolic solution oven dry constant weight, the unit gram;
(3) dihydrate gypsum Determination on content;
Accurately take by weighing the 5g sample with moisture determination instrument, be accurate to 0.001g, be designated as p
1Moisture determination instrument is transferred to 200 ℃, and sample weight after the record dehydration constant weight is designated as p
2
Dihydrate gypsum content is calculated as follows:
Work as g
1＞g
2The time: Z=4.78 [(d-W)-Y * 0.062] * 100%
Work as g
1＜g
2The time: Z=4.78 (d-Y * 0.062) * 100%
Wherein: d=1-p
2/ p
1
In the formula: Z-dihydrate gypsum content, %;
W-attached water content, %;
Y-semi-hydrated gypsum content, %;
D-semi-hydrated gypsum water of crystallization content;
p
1Samples weighed before the-dehydration, the unit gram;
p
2Samples weighed after the-dehydration, the unit gram.
The main points that the present invention implements are:
1, in above-mentioned steps (1), ethanolic solution concentration is 95%, otherwise will influence test findings.
2, in above-mentioned steps (2), sample needs in capacity distilled water, to soak more than the 5h, and the soak time upper limit is not required, and can spend the night after the sample soaked in water.
3, in order to make test findings more accurate, can suitably adjust " stop mode " of halogen moisture determination instrument, promptly consider the utmost point moisture loss in the dry run at a slow speed.
Characteristics of the present invention are:
1, the ultimate principle of utilization plaster of Paris phase composition analytical approach is all accomplished loaded down with trivial details test procedure the short form test operating process through a halogen moisture determination instrument.
2, through to the improvement and the repetition test of plaster of Paris phase composition analytical approach, combine fast, reliable halogen moisture determination instrument, shortened test period greatly, can reach to test the same day and went out the result same day, help control and the improvement of producer to product quality.
3, by halogen moisture determination instrument homogeneous heating stable properties, avoided the interference of human factor to greatest extent, made test findings have more stability and repeatability.Help the extensive popularization of this kind method.
4, the relevance research between promotion plaster of Paris phase composition and the performance promotes the development of this field theoretical research, instructs the application of gypsum base building materials.
The present invention is with the difference of domestic and international prior art:
1, loaded down with trivial details test procedure is all accomplished through a halogen moisture determination instrument, compares with traditional analytical method, has significantly simplified the test operation flow process.
2, combine quick, reliable halogen moisture determination instrument, shortened test period greatly.
3, owing to stablize, avoided the interference of human factor to greatest extent, made test findings have more stability and repeatability by halogen moisture determination instrument homogeneous heating.
The present invention and domestic and international comparing of existing like product, its creativeness be following some:
1, first the halogen moisture determination instrument is used for the analysis of plaster of Paris phase composition.
2, loaded down with trivial details test procedure is all accomplished through a halogen moisture determination instrument, simplified the test operation flow process.
3, plaster of Paris phase composition analytical approach is improved, shortened test period.
4, avoided the interference of human factor to greatest extent, made test findings have better stability and repeatability.
Advantage of the present invention is:
1, analytical equipment is simple, only needs a halogen moisture determination instrument can accomplish loaded down with trivial details Total Test step, simplifies analysis operation.
2, shortened test period greatly, can reach to test the same day and went out the result same day, helped control and the improvement of producer product quality.
3, avoided the interference of human factor to greatest extent, made test findings have more stability and repeatability.
4, test findings helps the relevance research between plaster of Paris phase composition and the performance accurately, promotes the development of this field theoretical research, instructs the application of gypsum base building materials.
Embodiment
Through embodiment the present invention is further specified below.
For the accuracy of analytical approach that the plaster of Paris phase composition is described and good repeatability; Give Shanghai building research institute laboratory, the Huaneng Group pit hole mouth first power plant laboratory and Waigaoqiao of Shaihai power plant laboratory respectively with four samples and make an experiment, three HS-43 halogen moisture determination instruments that testing laboratory all adopts Mei Tele company to produce.A, B, C, D adopt this patent: a kind of quick phase composition analytical approach of plaster of Paris, a, b, c, d adopt alcoholic solution aquation method (constant pressure and dry).A is corresponding with a, by that analogy.Two groups of result datas are listed in the table below, and carry out the variance comparison of statistics.Find out by following table; This patents are adopted in three laboratories: the measured experimental result of a kind of quick phase composition analytical approach of plaster of Paris is relatively more consistent; Variance numerical value all than adopting the little of alcoholic solution aquation method constant pressure and dry, can react the phase composition of plaster of Paris more accurately.
Quick phase composition analysis of plaster of Paris and alcoholic solution aquation method analysis result contrast table
The foregoing description is merely preference of the present invention, is not used for limiting the present invention, and is all within principle of the present invention, made any be equal to alternative, revise and change, all within protection scope of the present invention.
Claims (1)
1. the quick phase composition analytical approach of a plaster of Paris, step is following:
(1) attached water and III type anhydrite Determination on content;
Accurately take by weighing 5 gram sample weights with moisture determination instrument, be designated as g
1, be accurate to 0.001g; Add 5ml 95% ethanolic solution, sample moistening evenly after, moisture determination instrument is transferred to 50 ℃, dry to constant weight; Sample weight g after the record constant weight
2
Attached water content and III type anhydrite content are calculated as follows:
Work as g
1＞g
2The time: W=(g
1-g
2)/g
1* 100%; X=0;
Work as g
1＜g
2The time: W=0; X=15.11 (g
2-g
1)/g
1* 100%.
In the formula: W---attached water content, %;
X---III type anhydrite content, %;
g
1---add the preceding sample mass of 95% ethanolic solution, the unit gram;
g
2---add sample mass after the 95% ethanolic solution oven dry constant weight, the unit gram;
(2) semi-hydrated gypsum content and purity Determination on content;
Accurately take by weighing sample 5g with moisture determination instrument, be accurate to 0.001g, be designated as m
1In capacity distilled water, soak more than the 5h, then moisture determination instrument is transferred to 50 ℃, dry this sample, be designated as m to constant weight
2At last moisture determination instrument is transferred to 200 ℃, heat this sample, be designated as m to constant weight
3
Semi-hydrated gypsum content is calculated as follows:
Work as g
1＞g
2The time: Y=5.37 (c+W) * 100%
Work as g
1＜g
2The time: Y=5.37 (c-X * 0.265) * 100%
Wherein, c=m
2/ m
1-1;
Purity is calculated as follows: S=e/0.2093 * 100%
E=1-m wherein
3/ m
2
In the formula: Y-semi-hydrated gypsum content, %;
W-attached water content, %;
C---sample immersion increment;
S-purity, %;
E-dihydrate gypsum water of crystallization content;
m
1Sample mass before the-immersion, the unit gram;
m
2Sample mass after the-immersion oven dry constant weight, the unit gram;
m
3Sample appearance is heavy after the-dehydration, the unit gram;
g
1-adding the preceding sample mass of 95% ethanolic solution, unit restrains;
g
2Sample mass after the-adding 95% ethanolic solution oven dry constant weight, the unit gram;
(3) dihydrate gypsum Determination on content;
Accurately take by weighing the 5g sample with moisture determination instrument, be accurate to 0.001g, be designated as p
1Moisture determination instrument is transferred to 200 ℃, and sample weight after the record dehydration constant weight is designated as p
2
Dihydrate gypsum content is calculated as follows:
Work as g
1＞g
2The time: Z=4.78 [(d-W)-Y * 0.062] * 100%
Work as g
1＜g
2The time: Z=4.78 (d-Y * 0.062) * 100%
Wherein: d=1-p
2/ p
1
In the formula: Z-dihydrate gypsum content, %;
W-attached water content, %;
Y-semi-hydrated gypsum content, %;
D-semi-hydrated gypsum water of crystallization content;
p
1Samples weighed before the-dehydration, the unit gram;
p
2Samples weighed after the-dehydration, the unit gram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110033606 CN102175555B (en) | 2011-01-31 | 2011-01-31 | Method for quickly analyzing phase component of building gypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110033606 CN102175555B (en) | 2011-01-31 | 2011-01-31 | Method for quickly analyzing phase component of building gypsum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102175555A CN102175555A (en) | 2011-09-07 |
| CN102175555B true CN102175555B (en) | 2012-08-22 |
Family
ID=44518762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110033606 Expired - Fee Related CN102175555B (en) | 2011-01-31 | 2011-01-31 | Method for quickly analyzing phase component of building gypsum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102175555B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323799A (en) * | 2015-06-25 | 2017-01-11 | 北新集团建材股份有限公司 | Method of analyzing crystal water in gypsum plaster boards |
| CN105606639B (en) * | 2015-12-30 | 2019-09-17 | 泰山石膏有限公司 | The detection method of calcium sulphate crystal transformation temperature in a kind of gypsum raw material |
| CN105758761B (en) * | 2016-03-01 | 2019-06-11 | 美巢集团股份公司 | The measuring method of type III anhydrous gypsum content in a kind of building gypsum |
| CN106482992A (en) * | 2016-09-19 | 2017-03-08 | 洛阳理工学院 | A kind of method of gypsum crystallization water content in measure slurry |
| EP4253341A1 (en) | 2022-03-30 | 2023-10-04 | Saint-Gobain Placo | Method and system for measuring phase components in calcium sulphate material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4849175A (en) * | 1984-05-16 | 1989-07-18 | Societe Des Ciments Francais | Apparatus for automatically determining certain characteristics of cement |
| CN101514981A (en) * | 2008-02-21 | 2009-08-26 | 北新集团建材股份有限公司 | Method for rapidly analyzing phase composition of building gypsum powder |
| CN101625300A (en) * | 2009-08-18 | 2010-01-13 | 河北省电力研究院 | Test method of sulphate content of desulfurization gypsum |
-
2011
- 2011-01-31 CN CN 201110033606 patent/CN102175555B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4849175A (en) * | 1984-05-16 | 1989-07-18 | Societe Des Ciments Francais | Apparatus for automatically determining certain characteristics of cement |
| CN101514981A (en) * | 2008-02-21 | 2009-08-26 | 北新集团建材股份有限公司 | Method for rapidly analyzing phase composition of building gypsum powder |
| CN101625300A (en) * | 2009-08-18 | 2010-01-13 | 河北省电力研究院 | Test method of sulphate content of desulfurization gypsum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102175555A (en) | 2011-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102175555B (en) | Method for quickly analyzing phase component of building gypsum | |
| Deir et al. | Influence of starting material on the early age hydration kinetics, microstructure and composition of binding gel in alkali activated binder systems | |
| Turcry et al. | Analysis of an accelerated carbonation test with severe preconditioning | |
| CN101625300A (en) | Test method of sulphate content of desulfurization gypsum | |
| CN101514981B (en) | Method for rapidly analyzing phase composition of building gypsum powder | |
| WO2020037861A1 (en) | Method employing an experiment to measure shortest spontaneous combustion period of coal | |
| CN105115793A (en) | Method for rapidly preparing samples with different water saturations | |
| CN105784766A (en) | Method for calculating specific heat capacity of concrete | |
| CN203858175U (en) | Wet expansion performance testing device for materials | |
| CN104198511A (en) | Quantitatively detecting method of content of tri-sulfur calcium sulphoaluminate hydrate in cement hardening slurry | |
| CN105758761B (en) | The measuring method of type III anhydrous gypsum content in a kind of building gypsum | |
| Harrison | Estimation of strontium in biological materials by means of a flame spectrophotometer | |
| CN106219598A (en) | A kind of neodymium antimony codope stannic oxide nano powder and preparation thereof and application | |
| CN102226824B (en) | Apparatus and method for measuring resistivity changes during concrete forming process in high temperature environment | |
| CN101975793B (en) | Method for measuring firing temperature range of electrotechnical porcelain green body by using high-temperature dilatometer | |
| CN202066823U (en) | Measuring device for resistivity change in concrete forming process in high-temperature environment | |
| CN111157398A (en) | Analysis circuit, test method and control method of gypsum phase group analyzer | |
| CN102169073B (en) | Method for chemically analyzing AII-s phase in building gypsum | |
| CN103163070B (en) | Test method of bonding strength of redispersible latex powder | |
| CN214582917U (en) | Quality detection device for brick production | |
| CN106482992A (en) | A kind of method of gypsum crystallization water content in measure slurry | |
| Qian et al. | Application of rtd sensor in the real time measurement and wireless transmission | |
| CN116990346B (en) | Method for measuring acidity coefficient of rock wool based on differential scanning calorimetry | |
| CN103558119A (en) | Method for detecting density of continuous fiber ceramic-based composite material | |
| CN103868956B (en) | The assay method of water-insoluble composite material content in a kind of common portland cement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI CONSTRUCTION SCIENCE RESEARCH INST. Free format text: FORMER OWNER: SHANGHAI BUILDING SCIENCE RESEARCH INSTITUTE CO., LTD. Effective date: 20130929 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130929 Address after: 200032 Shanghai city Xuhui District Wanping Road No. 75 first floor Patentee after: Shanghai Construction Science Research Inst. Address before: 200032 Shanghai city Xuhui District Wanping Road No. 75 Patentee before: Shanghai Research Institute of Building Sciences (Group) Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20200131 |