Development of Innovative Antifreeze Grout Mortar for Anchor Applications in Cold Regions
Ground anchors and anchored systems have been successfully used as cost-effective soil supporting systems for highway safety considerations for decades. However, some unique challenges exist when these systems are used in Alaska and other cold regions. One challenge associated with anchor installati...
Published in: | Transportation Research Record: Journal of the Transportation Research Board |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
SAGE Publications
2015
|
Subjects: | |
Online Access: | http://dx.doi.org/10.3141/2508-01 http://journals.sagepub.com/doi/pdf/10.3141/2508-01 |
id |
crsagepubl:10.3141/2508-01 |
---|---|
record_format |
openpolar |
spelling |
crsagepubl:10.3141/2508-01 2023-05-15T17:57:23+02:00 Development of Innovative Antifreeze Grout Mortar for Anchor Applications in Cold Regions Lin, Chuang Liu, Jenny Zhang, Xiong 2015 http://dx.doi.org/10.3141/2508-01 http://journals.sagepub.com/doi/pdf/10.3141/2508-01 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license Transportation Research Record: Journal of the Transportation Research Board volume 2508, issue 1, page 1-12 ISSN 0361-1981 2169-4052 Mechanical Engineering Civil and Structural Engineering journal-article 2015 crsagepubl https://doi.org/10.3141/2508-01 2022-04-14T04:52:11Z Ground anchors and anchored systems have been successfully used as cost-effective soil supporting systems for highway safety considerations for decades. However, some unique challenges exist when these systems are used in Alaska and other cold regions. One challenge associated with anchor installation could be potential thawing of the warm permafrost as a result of grout mortar hydration; this thawing might undermine the capacity of the anchor. Therefore, this study aimed to develop an innovative antifreeze grout mortar for successful application of anchors in cold regions. A testing matrix of different combinations of chemical admixtures was developed, and workability, early-age strength, and freezing point of the mix water of mixes were evaluated to determine the optimum mix designs. Test results showed that the antifreeze grout mortar achieved three primary objectives: ( a) it depressed the freezing point of the mix water available for the hydration process, ( b) it accelerated the early-age strength gain at low temperature, and ( c) it enhanced excellent flowability for grouting. The laboratory results were further validated through fieldwork in a test section located inside the Cold Region Research and Engineering Laboratory permafrost tunnel. Article in Journal/Newspaper permafrost Alaska SAGE Publications (via Crossref) Transportation Research Record: Journal of the Transportation Research Board 2508 1 1 12 |
institution |
Open Polar |
collection |
SAGE Publications (via Crossref) |
op_collection_id |
crsagepubl |
language |
English |
topic |
Mechanical Engineering Civil and Structural Engineering |
spellingShingle |
Mechanical Engineering Civil and Structural Engineering Lin, Chuang Liu, Jenny Zhang, Xiong Development of Innovative Antifreeze Grout Mortar for Anchor Applications in Cold Regions |
topic_facet |
Mechanical Engineering Civil and Structural Engineering |
description |
Ground anchors and anchored systems have been successfully used as cost-effective soil supporting systems for highway safety considerations for decades. However, some unique challenges exist when these systems are used in Alaska and other cold regions. One challenge associated with anchor installation could be potential thawing of the warm permafrost as a result of grout mortar hydration; this thawing might undermine the capacity of the anchor. Therefore, this study aimed to develop an innovative antifreeze grout mortar for successful application of anchors in cold regions. A testing matrix of different combinations of chemical admixtures was developed, and workability, early-age strength, and freezing point of the mix water of mixes were evaluated to determine the optimum mix designs. Test results showed that the antifreeze grout mortar achieved three primary objectives: ( a) it depressed the freezing point of the mix water available for the hydration process, ( b) it accelerated the early-age strength gain at low temperature, and ( c) it enhanced excellent flowability for grouting. The laboratory results were further validated through fieldwork in a test section located inside the Cold Region Research and Engineering Laboratory permafrost tunnel. |
format |
Article in Journal/Newspaper |
author |
Lin, Chuang Liu, Jenny Zhang, Xiong |
author_facet |
Lin, Chuang Liu, Jenny Zhang, Xiong |
author_sort |
Lin, Chuang |
title |
Development of Innovative Antifreeze Grout Mortar for Anchor Applications in Cold Regions |
title_short |
Development of Innovative Antifreeze Grout Mortar for Anchor Applications in Cold Regions |
title_full |
Development of Innovative Antifreeze Grout Mortar for Anchor Applications in Cold Regions |
title_fullStr |
Development of Innovative Antifreeze Grout Mortar for Anchor Applications in Cold Regions |
title_full_unstemmed |
Development of Innovative Antifreeze Grout Mortar for Anchor Applications in Cold Regions |
title_sort |
development of innovative antifreeze grout mortar for anchor applications in cold regions |
publisher |
SAGE Publications |
publishDate |
2015 |
url |
http://dx.doi.org/10.3141/2508-01 http://journals.sagepub.com/doi/pdf/10.3141/2508-01 |
genre |
permafrost Alaska |
genre_facet |
permafrost Alaska |
op_source |
Transportation Research Record: Journal of the Transportation Research Board volume 2508, issue 1, page 1-12 ISSN 0361-1981 2169-4052 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.3141/2508-01 |
container_title |
Transportation Research Record: Journal of the Transportation Research Board |
container_volume |
2508 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
12 |
_version_ |
1766165797248434176 |