Observation of microcracks in granite using a confocal laser scanning microscope

Shixin Liu, A. H.M. Faisal Anwar, Cheol Kim Byung, Yasuaki Ichikawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Microcrack generation and propagation of coarse- and fine-grained granites were investigated under a confocal laser scanning microscope (CLSM) observation. The microphotographs were obtained for different stages of the applied stresses corresponding to the different cracking zones as mentioned in the stress strain relationship of granite. The microphotographs under CLSM showed that the microcracks were initiated from the crack tips where the maximum stress concentration may occur while in previous studies under light microscope (LM) or stereoscopic microscope it was found that the microcracks initiate from the grain boundary. Results revealed that the microcracks were propagated first perpendicular to the loading direction towards the weak crystalline surface of the feldspar and then parallel to the loading direction towards the quartz. Microcracks were also initiated from the corner tips of biotite and then propagated towards the weak crystalline surface of feldspar and then parallel to the loading direction. The microcracks in the fine grain granite were initiated at a later stage of applied stress than the coarse one because it has a numerous number of contacts between the grains offering the high bondage of cementing material. Thus the CLSM observation described in this paper may be considered as an improved method of analyzing microcracks in rocks.

Original languageEnglish
Title of host publicationProceedings of the 12th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures
EditorsYong-Bo Shao, Chat-Tim Tam, Xin-Gang Zhou
PublisherCI-Premier Pte Ltd
Pages685-692
Number of pages8
Volume1
ISBN (Electronic)9789810851996
Publication statusPublished - Jan 1 2010
Externally publishedYes
Event12th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures - Yantai, China
Duration: Apr 23 2010Apr 25 2010

Other

Other12th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures
CountryChina
CityYantai
Period4/23/104/25/10

Fingerprint

Granite
Microcracks
Microscopes
Scanning
Lasers
Feldspar
Crystalline materials
Crack tips
Stress concentration
Quartz
Grain boundaries
Rocks

Keywords

  • CLSM
  • Microcracks propagation
  • Observation of microcracks

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Mechanical Engineering
  • Building and Construction

Cite this

Liu, S., Faisal Anwar, A. H. M., Byung, C. K., & Ichikawa, Y. (2010). Observation of microcracks in granite using a confocal laser scanning microscope. In Y-B. Shao, C-T. Tam, & X-G. Zhou (Eds.), Proceedings of the 12th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures (Vol. 1, pp. 685-692). CI-Premier Pte Ltd.

Observation of microcracks in granite using a confocal laser scanning microscope. / Liu, Shixin; Faisal Anwar, A. H.M.; Byung, Cheol Kim; Ichikawa, Yasuaki.

Proceedings of the 12th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures. ed. / Yong-Bo Shao; Chat-Tim Tam; Xin-Gang Zhou. Vol. 1 CI-Premier Pte Ltd, 2010. p. 685-692.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Liu, S, Faisal Anwar, AHM, Byung, CK & Ichikawa, Y 2010, Observation of microcracks in granite using a confocal laser scanning microscope. in Y-B Shao, C-T Tam & X-G Zhou (eds), Proceedings of the 12th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures. vol. 1, CI-Premier Pte Ltd, pp. 685-692, 12th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures, Yantai, China, 4/23/10.
Liu S, Faisal Anwar AHM, Byung CK, Ichikawa Y. Observation of microcracks in granite using a confocal laser scanning microscope. In Shao Y-B, Tam C-T, Zhou X-G, editors, Proceedings of the 12th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures. Vol. 1. CI-Premier Pte Ltd. 2010. p. 685-692
Liu, Shixin ; Faisal Anwar, A. H.M. ; Byung, Cheol Kim ; Ichikawa, Yasuaki. / Observation of microcracks in granite using a confocal laser scanning microscope. Proceedings of the 12th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures. editor / Yong-Bo Shao ; Chat-Tim Tam ; Xin-Gang Zhou. Vol. 1 CI-Premier Pte Ltd, 2010. pp. 685-692
@inproceedings{52c5109b9ac94f2fbf3991d687826584,
title = "Observation of microcracks in granite using a confocal laser scanning microscope",
abstract = "Microcrack generation and propagation of coarse- and fine-grained granites were investigated under a confocal laser scanning microscope (CLSM) observation. The microphotographs were obtained for different stages of the applied stresses corresponding to the different cracking zones as mentioned in the stress strain relationship of granite. The microphotographs under CLSM showed that the microcracks were initiated from the crack tips where the maximum stress concentration may occur while in previous studies under light microscope (LM) or stereoscopic microscope it was found that the microcracks initiate from the grain boundary. Results revealed that the microcracks were propagated first perpendicular to the loading direction towards the weak crystalline surface of the feldspar and then parallel to the loading direction towards the quartz. Microcracks were also initiated from the corner tips of biotite and then propagated towards the weak crystalline surface of feldspar and then parallel to the loading direction. The microcracks in the fine grain granite were initiated at a later stage of applied stress than the coarse one because it has a numerous number of contacts between the grains offering the high bondage of cementing material. Thus the CLSM observation described in this paper may be considered as an improved method of analyzing microcracks in rocks.",
keywords = "CLSM, Microcracks propagation, Observation of microcracks",
author = "Shixin Liu and {Faisal Anwar}, {A. H.M.} and Byung, {Cheol Kim} and Yasuaki Ichikawa",
year = "2010",
month = "1",
day = "1",
language = "English",
volume = "1",
pages = "685--692",
editor = "Yong-Bo Shao and Chat-Tim Tam and Xin-Gang Zhou",
booktitle = "Proceedings of the 12th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures",
publisher = "CI-Premier Pte Ltd",

}

TY - GEN

T1 - Observation of microcracks in granite using a confocal laser scanning microscope

AU - Liu, Shixin

AU - Faisal Anwar, A. H.M.

AU - Byung, Cheol Kim

AU - Ichikawa, Yasuaki

PY - 2010/1/1

Y1 - 2010/1/1

N2 - Microcrack generation and propagation of coarse- and fine-grained granites were investigated under a confocal laser scanning microscope (CLSM) observation. The microphotographs were obtained for different stages of the applied stresses corresponding to the different cracking zones as mentioned in the stress strain relationship of granite. The microphotographs under CLSM showed that the microcracks were initiated from the crack tips where the maximum stress concentration may occur while in previous studies under light microscope (LM) or stereoscopic microscope it was found that the microcracks initiate from the grain boundary. Results revealed that the microcracks were propagated first perpendicular to the loading direction towards the weak crystalline surface of the feldspar and then parallel to the loading direction towards the quartz. Microcracks were also initiated from the corner tips of biotite and then propagated towards the weak crystalline surface of feldspar and then parallel to the loading direction. The microcracks in the fine grain granite were initiated at a later stage of applied stress than the coarse one because it has a numerous number of contacts between the grains offering the high bondage of cementing material. Thus the CLSM observation described in this paper may be considered as an improved method of analyzing microcracks in rocks.

AB - Microcrack generation and propagation of coarse- and fine-grained granites were investigated under a confocal laser scanning microscope (CLSM) observation. The microphotographs were obtained for different stages of the applied stresses corresponding to the different cracking zones as mentioned in the stress strain relationship of granite. The microphotographs under CLSM showed that the microcracks were initiated from the crack tips where the maximum stress concentration may occur while in previous studies under light microscope (LM) or stereoscopic microscope it was found that the microcracks initiate from the grain boundary. Results revealed that the microcracks were propagated first perpendicular to the loading direction towards the weak crystalline surface of the feldspar and then parallel to the loading direction towards the quartz. Microcracks were also initiated from the corner tips of biotite and then propagated towards the weak crystalline surface of feldspar and then parallel to the loading direction. The microcracks in the fine grain granite were initiated at a later stage of applied stress than the coarse one because it has a numerous number of contacts between the grains offering the high bondage of cementing material. Thus the CLSM observation described in this paper may be considered as an improved method of analyzing microcracks in rocks.

KW - CLSM

KW - Microcracks propagation

KW - Observation of microcracks

UR - http://www.scopus.com/inward/record.url?scp=85028652870&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85028652870&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85028652870

VL - 1

SP - 685

EP - 692

BT - Proceedings of the 12th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures

A2 - Shao, Yong-Bo

A2 - Tam, Chat-Tim

A2 - Zhou, Xin-Gang

PB - CI-Premier Pte Ltd

ER -