The phenomenon of cement ageing on moist air: surface chemistry, mechanisms and effects on admixture performance
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| Main Author: | |
|---|---|
| Format: | Thesis Book |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20130204-1121251-0-8 Inhaltsverzeichnis |
| Physical Description: | Getr. Zählung Ill., graph. Darst. |
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Record in the Search Index
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| adam_text | IMAGE 1
CONTENT
CONTENT
1 INTRODUCTION 1
2 SCOPE OF THE WORK 3
3 STATE OF THE ART 5
3.1 ORDINARY PORTLAND CEMENT 5
3.2 HYDRATION O F PORTLAND CEMENT 7
3.3 CHEMICAL ADMIXTURES 8
3.4 PREHYDRATION O F CEMENT 10
3.5 WATER VAPOUR - SOLID INTERACTIONS 13
3.5.1 RELATIVE AND ABSOLUTE HUMIDITY 13
3.5.2 STATES O F SORBED WATER 14
3.5.3 CHEMICAL POTENTIAL O F WATER 16
4 EXPERIMENTAL 1 9
4.1 MATERIALS 19
4.1.1 PURE CLINKER PHASES AND OTHER CEMENTITIOUS COMPONENTS 19
4.1.2 ADMIXTURES AND DRYMIX MORTAR 21
4.2 EXPOSURE O F SAMPLES TO RELATIVE HUMIDITY 21
4.2.1 SORPTION BALANCE INSTRUMENT 22
4.2.2 SATURATED SALT SOLUTIONS 24
4.2.3 CLIMATE CHAMBER 24
5 METHODS 2 7
5.1 SURFACE ANALYSIS 27
5.1.1 X-RAY DIFFRACTION ANALYSIS 29
5.1.2 X-RAY PHOTOELECTRON SPECTROSCOPY 29
5.1.3 IR SPECTROSCOPY AND RAMAN ANALYSIS 30
5.1.4 TIME-OF-FLIGHT SECONDARY ION MASS SPECTROMETRY (TOF-SIMS) 31
5.1.5 SCANNING ELECTRON MICROSCOPY 32
X V I I
HTTP://D-NB.INFO/1034879170
IMAGE 2
CONTENT
5.2 BULK ANALYSIS 33
5.3 INTERACTIONS WITH ADMIXTURES 35
6 RESULTS AND DISCUSSIONS 3 7
6.1 SORPTION BALANCE STUDY ON ANHYDROUS CEMENT MINERALS - P A P E R 1 37
6.2 X-RAY PHOTOELECTRON SPECTROSCOPIC STUDY ON C3A POLYMORPHS - P A P E
R 2 40
6.3 RAMAN SPECTROSCOPIC STUDY ON CAO - P A P E R 3 43
6.4 SORPTION BALANCE STUDY ON BINARY MIXTURES - P A P E R 4 45
6.5 THE EFFECTS O F PREHYDRATION ON THE ADSORPTION O F BNS
SUPERPLASTICIZER - P A P E R 5 47
6.6 THE EFFECTS O F PREHYDRATION ON THE PERFORMANCE O F CHEMICAL
ADMIXTURES - P A P E R 6... 49
6.7 THE EFFECTS O F PREHYDRATION ON THE PERFORMANCE O F DRYMIX MORTARS -
P A P E R 7 50
6.8 FURTHER PRELIMINARY RESULTS 53
6.8.1 AN ATTEMPT TO UTILISE SIMS TECHNIQUE IN THE ANALYSIS O F CEMENT
PREHYDRATION 53
6.8.2 STUDY ON THE SORPTION KINETICS APPLYING A SHRINKING CORE MODEL 56
6.8.3 PREHYDRATION O F DIFFERENT CALCIUM SULPHATES AT 80 % RH AND 80 C
63
6.8.4 C E M I PREHYDRATED AT 80 C AND 1 0 - 8 0 % RH 65
6.8.5 CEM II / A-LL PREHYDRATED AT 35 C AND 90 % RH 66
7 CONCLUSIONS AND OUTLOOK 7 1
7.1 CONCLUSIONS 71
7.2 OUTLOOK 73
8 REFERENCES 7 5
XVIII
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| spelling | Dubina, Elina Verfasser aut The phenomenon of cement ageing on moist air surface chemistry, mechanisms and effects on admixture performance Elina Dubina 2013 Getr. Zählung Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier München, Techn. Univ., Diss., 2013 Alterung (DE-588)4142063-9 gnd rswk-swf Zementbeton (DE-588)4190685-8 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Zementbeton (DE-588)4190685-8 s Alterung (DE-588)4142063-9 s DE-604 Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:91-diss-20130204-1121251-0-8 http://mediatum.ub.tum.de/node?id=1121251 Verlag kostenfrei Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20130204-1121251-0-8 Resolving-System DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025892679&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Dubina, Elina The phenomenon of cement ageing on moist air surface chemistry, mechanisms and effects on admixture performance Alterung (DE-588)4142063-9 gnd Zementbeton (DE-588)4190685-8 gnd |
| subject_GND | (DE-588)4142063-9 (DE-588)4190685-8 (DE-588)4113937-9 |
| title | The phenomenon of cement ageing on moist air surface chemistry, mechanisms and effects on admixture performance |
| title_auth | The phenomenon of cement ageing on moist air surface chemistry, mechanisms and effects on admixture performance |
| title_exact_search | The phenomenon of cement ageing on moist air surface chemistry, mechanisms and effects on admixture performance |
| title_full | The phenomenon of cement ageing on moist air surface chemistry, mechanisms and effects on admixture performance Elina Dubina |
| title_fullStr | The phenomenon of cement ageing on moist air surface chemistry, mechanisms and effects on admixture performance Elina Dubina |
| title_full_unstemmed | The phenomenon of cement ageing on moist air surface chemistry, mechanisms and effects on admixture performance Elina Dubina |
| title_short | The phenomenon of cement ageing on moist air |
| title_sort | the phenomenon of cement ageing on moist air surface chemistry mechanisms and effects on admixture performance |
| title_sub | surface chemistry, mechanisms and effects on admixture performance |
| topic | Alterung (DE-588)4142063-9 gnd Zementbeton (DE-588)4190685-8 gnd |
| topic_facet | Alterung Zementbeton Hochschulschrift |
| url | http://mediatum.ub.tum.de/node?id=1121251 https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20130204-1121251-0-8 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025892679&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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