![\"Hot](\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2025\/04\/page-title.png\")
<\/p>\nHello, everyone.<\/p>\n
This is Enta.<\/p>\n
<\/p>\n
Hot Springs!<\/p>\n
Do you like it?<\/p>\n
I absolutely love it!!! lol<\/p>\n
<\/p>\n
However, spraying in places like this is very difficult.<\/p>\n
There is a spring with alkaline aggregate reactivity due to the composition of the hot spring water, and it flows through bedrock.<\/p>\n
What's that?<\/p>\n
That's what you're thinking, right? lol<\/p>\n
<\/p>\n
Alkali-aggregate reaction occurs when an alkaline pore solution in concrete reacts chemically with certain minerals in the aggregate,<\/strong><\/span><\/p>\n Cracks in Concrete and Loss of Strength<\/span>It is a phenomenon that causes [...].<\/strong><\/span><\/p>\n Depending on the components present in the hot spring water, an alkali-aggregate reaction may occur.<\/span><\/p>\n <\/p>\n To put it simply, if you use standard mortar or concrete spraying in a hot spring area,<\/p>\n It may deteriorate quickly!<\/span><\/strong><\/span>That's the point.<\/p>\n So, what are we going to do?<\/p>\n All we have to do is prevent the alkali-aggregate reaction (ASR) from occurring!<\/p>\n <\/p>\n As a general precaution:<\/p>\n Use of Low-Alkali Cement<\/strong>: Using cement with a low alkali content reduces the amount of alkali that triggers the reaction<\/p>\n<\/li>\n Selecting the Right Aggregate<\/strong>: Select aggregates that are resistant to ASR. Use aggregates considered to have low reactivity.<\/p>\n<\/li>\n Addition of Pozzolan Materials<\/strong>: Adding pozzolanic materials such as fly ash and silica fume to concrete neutralizes excess alkali in the cement and prevents ASR.<\/p>\n<\/li>\n Proper Formulation Design<\/strong>: Control the environment within the concrete by maintaining a low water-to-cement ratio and ensuring sufficient hardening and proper curing.<\/p>\n<\/li>\n Proper Curing<\/strong>: Ensure proper curing during the concrete hardening process. Maintain appropriate humidity and temperature levels.<\/p>\n<\/li>\n<\/ol>\n <\/p>\n This is the norm!<\/p>\n But the work we're doing is slope stabilization!<\/p>\n At first glance, this looks like it could work!!?<\/p>\n Those are numbers 1 and 3.<\/p>\n I think it's a good idea to use low-alkali cement for small areas.<\/p>\n However, since the cost increases with area and thickness, this is not a practical solution.<\/p>\n So, that makes it number 3.<\/p>\n <\/p>\n The solution is to add an admixture!<\/p>\n This might actually be the best option for slope contractors, lol.<\/p>\n It's easy, after all.<\/p>\n <\/p>\n In terms of the overall feel, I think replacing the sand\u2014rather than changing the mix ratio, which would be a hassle\u2014is the better way to increase strength.<\/p>\n (I think this is probably within the margin of error when it comes to the actual amount of cement per 1BT, but I'll leave it up to the site crew, lol.)<\/p>\n It's just a small thing, but since we're doing it anyway, we might as well make something great, right? ^^<\/p>\n <\/p>\n See you later.<\/p>","protected":false},"excerpt":{"rendered":" Hello, everyone. This is Enta. Hot springs! Do you like them? I absolutely love them!!! lol But spraying in places like this is really tough. There\u2019s bedrock here where the spring water\u2014which contains mineral components\u2014causes an alkali-aggregate reaction. You\u2019re probably thinking, \u201cWhat\u2019s that?\u201d lol &n\u2026<\/p>","protected":false},"author":2,"featured_media":53593,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[37,38],"tags":[58,70,1636,6719,6720,6721],"class_list":["post-54191","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mortar-spraying","category-construction-management","tag-58","tag-70","tag-1636","tag-6719","tag-6720","tag-6721"],"acf":[],"yoast_head":"\n![\"Tunnel](\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2025\/04\/2025-03-27-16.41.32-4.jpg\")
<\/p>\n\n
![\"Mortar](\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2025\/04\/2021-01-11-09.43.47.jpg\")
<\/p>\n