![\"Outdated](\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2025\/04\/2025-04-23-11.38.18.jpg\")
<\/p>\nHello, everyone.<\/p>\n
This is Enta.<\/p>\n
The other day, I found a really old legal framework in the Kanto region and was checking it out lol<\/p>\n
(Like a suspicious person, lol)<\/p>\n
<\/p>\n
One of the key features of this installation is that it uses a waist-level blow.<\/p>\n
\"Waist spraying\" refers to the process of first spraying the area down to about waist level.<\/p>\n
After that, spray the top section.<\/p>\n
<\/p>\n
The reason we do this is to prevent any overspray that falls from above from landing in the mesh at the bottom.<\/p>\n
This construction method is based on the idea that if air blows in from above and a lump of uneven size remains in the mesh at the end, it will result in poor quality.<\/p>\n
<\/p>\n
I think it used to be pretty standard practice.<\/p>\n
But that downside really comes through, lol.<\/p>\n
![\"Outdated](\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2025\/04\/2025-04-23-11.38.11.jpg\")
<\/p>\n
Overall, there's efflorescence appearing horizontally, isn't there?<\/p>\n
That's the downside.<\/p>\n
Since several days have passed since it last reached this bottom section, a cold joint has formed.<\/p>\n
<\/p>\n
The general process is as follows:<\/p>\n
Blowing at the waist \u2192 Leithans \u2192 Age-related deterioration \u2192 Cold joint \u2192 Age-related deterioration \u2192 Efflorescence.<\/p>\n
<\/p>\n
In the construction of concrete structures, \u201cefflorescence,\u201d \u201claitance,\u201d and \u201ccold joints\u201d<\/p>\n
All of themA phenomenon that significantly affects construction and the final finish<\/strong>That's why proper management is so important.<\/p>\n \u300cReitans<\/strong>\" is applied to the surface of the poured concreteA fragile layer formed by fine particles and moisture in the mortar that rose to the surface and then settled<\/strong>That is.<\/p>\n This tends to occur immediately after pouring or during finishing.<\/p>\n This latencyIf you proceed to the next step (joining) without thoroughly removing the residue, the bond at the joint will be incomplete, and<\/strong><\/p>\n A structure known as a \u201ccold joint,\u201d which consists of layers (mille-feuille)<\/strong>...occurs.<\/p>\n Cold joints not only cause cosmetic deterioration, but also,Due to a decline in watertightness<\/strong>\u3002<\/p>\n And thisIf there are gaps (layers), the soluble salts inside are more likely to dissolve into the water, eventually causing \u201cefflorescence\u201d (white deposits) to appear on the surface.<\/strong><\/p>\n In short, improper treatment of the laitance during the initial spray application leads to the formation of cold joints, which ultimately contributes to efflorescence.<\/strong>\u3002<\/p>\n A management error early in the construction process (failure to remove the curing compound) led to a structural defect (cold joint), and<\/p>\n Since this leads to a deterioration in the finish's appearance and durability (efflorescence),It is absolutely critical to ensure proper processing and curing at each stage.<\/strong><\/p>\n The solution to this is to remove latency, but that\u2019s difficult from a legal standpoint!<\/p>\n I know some of you might be thinking, \u201cWith a pressure washer?\u201d but spraying water on a slope is way more dangerous, lol.<\/p>\n <\/p>\n Therefore, it is preferable to avoid cutting from top to bottom as much as possible (using a construction method that avoids creating joints).<\/p>\n However, with long sloped surfaces, joints are inevitably formed.<\/p>\n So, maybe using something like a primer\u2014such as a mortar adhesive\u2014could be an option?<\/p>\n <\/p>\n I can't say for sure whether efflorescence will appear right away, but these kinds of precautions are necessary.<\/p>\n That said, we slope contractors have tried all sorts of things in the past, but in the end, the best approach is to blow it through as vertically as possible!<\/p>\n I think this is the best option, lol.<\/p>\n Some people might tease, \u201cWhat about the cross-section!?\u201d but we\u2019ll spray it as soon as possible!<\/p>\n That's about it.<\/p>\n There's only so much you can do on a slope, after all.<\/p>\n <\/p>\n Rather than saying that the approach to this in particular amounts to \u201cthinking on autopilot,\u201d I\u2019d say it\u2019s more like, \u201cOh, that\u2019s just how it is,\u201d lol.<\/p>\n I once saw a vertical frame cross-section like this in Shiga Prefecture! It might be fine if you just put it in, but this is one construction method you absolutely must not use.<\/p>\n It would completely undermine the continuity of the legal framework. You absolutely must not do that.<\/p>\n (I think both the consultant and the construction company\u2019s supervisor are at fault here.)<\/p>\n The rebar is exposed here too, so it\u2019s definitely going to start rusting from this point on\u2014(Is this just normal along Lake Biwa??)<\/p>\n <\/p>\n See you later.<\/p>","protected":false},"excerpt":{"rendered":" Hello, everyone. This is Enta. The other day, I found a pretty old concrete frame in the Kanto region and was checking it out (lol\u2014like a suspicious person, lol). The distinctive feature of this construction method is that they start by spraying up to waist height. After that, they spray the upper part\u2026<\/p>","protected":false},"author":2,"featured_media":48997,"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_total_topic_count_hidden":0,"_bbp_total_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[29],"tags":[61,70,290,1357,6756,6757,6758],"class_list":["post-54354","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-frame-spraying","tag-61","tag-70","tag-290","tag-1357","tag-6756","tag-6757","tag-6758"],"acf":[],"yoast_head":"\n![\"Efflorescence\"](\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2025\/04\/2025-04-23-11.38.02.jpg\")
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