{"id":6062,"date":"2021-07-08T15:01:56","date_gmt":"2021-07-08T13:01:56","guid":{"rendered":"https:\/\/www.zetas.com.tr\/?post_type=avada_portfolio&p=6062"},"modified":"2021-08-19T13:46:09","modified_gmt":"2021-08-19T11:46:09","slug":"jet-grout","status":"publish","type":"avada_portfolio","link":"https:\/\/www.zetas.com.tr\/offer-portfolio\/jet-grout\/","title":{"rendered":"Jet Grout"},"content":{"rendered":"

Y\u00fcksek bas\u0131n\u00e7l\u0131 enjeksiyon verilerek daneler aras\u0131ndaki ba\u011f\u0131n k\u0131r\u0131ld\u0131\u011f\u0131 ve e\u015f zamanl\u0131 olarak \u00e7imento zemin kar\u0131\u015f\u0131m\u0131 kolonlar\u0131n elde edildi\u011fi \u0131slah y\u00f6ntemdir.<\/p>\n<\/div>

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Bu y\u00f6ntemde ilk etapta zemin, \u00f6ng\u00f6r\u00fclen derinli\u011fe kadar \u00f6zel ata\u015fmanl\u0131 klasik delgi makineleriyle ve genellikle rotari usul\u00fc ile \u00e7al\u0131\u015fan veya d\u0131\u015ftan darbeli \u00e7eki\u00e7lerle 90 mm \u00e7ap\u0131nda delinmektedir. Delgi s\u0131ras\u0131nda kullan\u0131lan ak\u0131\u015fkanlar su, hava, gerekirse bentonit s\u00fcspansiyonu veya \u00e7imento-su kar\u0131\u015f\u0131m\u0131d\u0131r. \u0130kinci a\u015famada delgi tijinin ucundaki delik kapat\u0131larak monit\u00f6r denilen \u00f6zel par\u00e7aya yatay olarak tesbit edilen 1.5~4.0 mm \u00e7apl\u0131 1~4 adet p\u00fcsk\u00fcrtme memelerinden (nozzle) 400 ~ 600 bar bas\u0131n\u00e7la jetleme enjeksiyonu yap\u0131l\u0131r. P\u00fcsk\u00fcrtme memelerinden ortalama 250 m\/sn gibi \u00e7ok b\u00fcy\u00fck bir h\u0131zla \u00e7\u0131kan enjeksiyon malzemesi, ta\u015f\u0131d\u0131\u011f\u0131 b\u00fcy\u00fck kinetik enerji dolay\u0131s\u0131yla \u00e7evredeki zemini y\u0131rtarak kar\u0131\u015ft\u0131r\u0131r, bu s\u0131rada tijin belirli sabit bir h\u0131zla d\u00f6nd\u00fcr\u00fclerek yukar\u0131ya \u00e7ekilmesi ile homojen ve s\u00fcrekli yap\u0131da, \u00f6zellikleri tamamen de\u011fi\u015ftirilmi\u015f ve iyile\u015ftirilmi\u015f zemin-\u00e7imento kar\u0131\u015f\u0131m\u0131 (soilcrete) jet grout kolonlar\u0131 elde edilir.<\/p>\n<\/div>

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Jetgrout uygulamas\u0131 \u00e7ok \u00e7e\u015fitli temel m\u00fchendisli\u011fi problemlerinde yayg\u0131n olarak uygulanabilmektedir. Jet grout ekipman\u0131 uyumlu bir delgi makinesi, y\u00fcksek bas\u0131n\u00e7 kapasiteli \u00f6zel bir pompa \u00fcnitesi, mikser \u00fcnitesi ve \u00e7imento silosundan olu\u015fmaktad\u0131r. Jetgrout delgi makinesi uygulamada projesinde \u00f6ng\u00f6r\u00fclen derinli\u011fe kadar, yukar\u0131da belirtilen y\u00f6ntemlerden herhangi biri ile delgi yapabilecek ve jet grout kolon te\u015fkil edebilecek kapasitede, tam hidrolik ve paletli olmal\u0131, delme ve jetleme i\u015flemlerini istenilen derinli\u011fe kadar tij ekleyip \u00e7\u0131karmaya gerek kalmadan bir defada (single pass) yapabilmelidir.<\/p>\n<\/div>

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Enjeksiyon h\u0131z\u0131, a\u00e7\u0131s\u0131, d\u00f6nme ve geri \u00e7eki\u015f h\u0131z\u0131, nozul (nozzle) adedi ve \u00e7ap\u0131 gibi parametrelerin de\u011fi\u015ftirilmesi ile \u00e7e\u015fitli iyile\u015ftirilmi\u015f zemin \u015fekilleri elde etmek m\u00fcmk\u00fcnd\u00fcr. Jetgrout y\u00f6ntemiyle kil gibi kohezyonlu veya kum, \u00e7ak\u0131l gibi kohezyonsuz ve de\u011fi\u015fik karakterde \u00e7ok geni\u015f ve farkl\u0131 t\u00fcrdeki zeminler \u0131slah edilebilmektedir. Jetleme s\u0131ras\u0131nda bir k\u0131s\u0131m malzeme tijle zemin aras\u0131ndaki bo\u015fluktan y\u00fczeye \u00e7\u0131kar. Bu husus iyile\u015ftirilen zemin i\u00e7erisinde bas\u0131n\u00e7 olmad\u0131\u011f\u0131n\u0131n i\u015faretidir. B\u00f6ylece istenilen \u00e7ap ve boyda, istenilen dayan\u0131m\u0131 haiz kolonlar imal edilir. Jet grout uygulamas\u0131 zemini kesme ve dolgu i\u015flemlerinin sadece enjeksiyon jeti ile yap\u0131ld\u0131\u011f\u0131 jet 1 (mono jet), mono jetin hava yast\u0131\u011f\u0131 ile desteklendi\u011fi jet 2 (double jet), ilave olarak suyun da kullan\u0131ld\u0131\u011f\u0131 jet 3 (triple jet) olarak 3 ayr\u0131 sistemde yap\u0131lmaktad\u0131r.<\/p>\n

Jet 2 y\u00f6nteminde delgi ile y\u00fcksek bas\u0131n\u00e7l\u0131 enjeksiyon sistemi, konsantrik (ayni merkezli i\u00e7 i\u00e7e) iki ayr\u0131 borudan olu\u015fmakta ve \u00e7imento-su kar\u0131\u015f\u0131m\u0131 300~600 bar bas\u0131n\u00e7la i\u00e7teki borudan verilirken, i\u00e7 ve d\u0131\u015f boru aras\u0131ndan 8~12 bar bas\u0131n\u00e7la zemine hava verilmektedir. Bas\u0131n\u00e7l\u0131 hava s\u00fcrt\u00fcnme s\u0131ras\u0131nda olu\u015fan kay\u0131plar\u0131 azaltarak zemin-\u00e7imento kar\u0131\u015f\u0131m\u0131 kolon \u00e7aplar\u0131nda %60~80 oran\u0131nda bir art\u0131\u015f sa\u011flar. Delgide su ve hava, dolguda ise enjeksiyon \u015ferbetinin kullan\u0131ld\u0131\u011f\u0131 Jet 3 y\u00f6nteminde, sistem ayni merkezli i\u00e7 i\u00e7e \u00fc\u00e7 borudan olu\u015fmaktad\u0131r. En i\u00e7teki borudan 400~600 bar bas\u0131n\u00e7l\u0131 su bas\u0131l\u0131rken, 8~12 bar bas\u0131n\u00e7l\u0131 hava ortadaki borudan ve en d\u0131\u015ftaki boru ile ortadaki boru aras\u0131ndan da 30~80 bar bas\u0131n\u00e7la enjeksiyon \u015ferbeti verilir.<\/p>\n<\/div>

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\u00a0Hava ve su bas\u0131nc\u0131 ile \u00f6n\u00fc a\u00e7\u0131lan enjeksiyon \u015ferbeti Jet 1 y\u00f6ntemine nazaran daha uzaklardaki zemine n\u00fcfuz edebilir. Bu nedenle Jet 2 ve Jet 3 y\u00f6ntemleriyle \u00f6zellikle kumlu zeminlerde 3.00 m \u00e7apa kadar, jet 1 y\u00f6ntemiyle ise ortalama 1.00 m. \u00e7ap\u0131nda kolon elde edilebilmektedir. Killi zeminlerde \u00e7ap Jet 1 y\u00f6nteminde 60-70 cm civar\u0131nda olmaktad\u0131r. Jet 2 ve Jet 3 sistemleriyle imal edilen kolonlarda zemin ve \u00e7imento kar\u0131\u015f\u0131m\u0131 enjeksiyon malzemesi i\u00e7erisine giren fazla su ve hava nedeniyle dayan\u0131mlar\u0131nda, Jet 1 y\u00f6ntemiyle imal edilenlere g\u00f6re bir miktar azalma s\u00f6z konusu olmaktad\u0131r.<\/p>\n<\/div>

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Tijler y\u00fcksek bas\u0131nca dayan\u0131kl\u0131 \u00f6zel ala\u015f\u0131ml\u0131 olup, birle\u015fim yerlerindeki ke\u00e7eler min. 600 bar bas\u0131nca dayanabilmelidir. \u00c7imento silosundan al\u0131nan \u00e7imento mikser \u00fcnitesinde su ile kar\u0131\u015ft\u0131r\u0131larak projesinde \u00f6ng\u00f6r\u00fclen dozajda enjeksiyon \u015ferbeti olu\u015fturulur ve pompa \u00fcnitesine iletilir. Y\u00fcksek bas\u0131n\u00e7l\u0131 pompa \u00fcnitesinden delgi makinas\u0131na iletilen enjeksiyon \u015ferbeti, delgi makinas\u0131 ve buna ba\u011fl\u0131 tijlerin ucundaki nozullardan zemine y\u00fcksek bas\u0131n\u00e7 alt\u0131nda iletilir.<\/p>\n<\/div>

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Y\u00fcksek bas\u0131n\u00e7l\u0131 enjeksiyon verilerek daneler aras\u0131ndaki ba\u011f\u0131n k\u0131r\u0131ld\u0131\u011f\u0131 ve e\u015f zamanl\u0131 olarak \u00e7imento zemin kar\u0131\u015f\u0131m\u0131 kolonlar\u0131n elde edildi\u011fi \u0131slah y\u00f6ntemdir.<\/p>\n","protected":false},"author":38,"featured_media":5803,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"portfolio_category":[917],"portfolio_skills":[],"portfolio_tags":[1091],"class_list":["post-6062","avada_portfolio","type-avada_portfolio","status-publish","format-standard","has-post-thumbnail","hentry","portfolio_category-zemin-iyilestirme","portfolio_tags-t-jet-grout"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.zetas.com.tr\/wp-json\/wp\/v2\/avada_portfolio\/6062"}],"collection":[{"href":"https:\/\/www.zetas.com.tr\/wp-json\/wp\/v2\/avada_portfolio"}],"about":[{"href":"https:\/\/www.zetas.com.tr\/wp-json\/wp\/v2\/types\/avada_portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/www.zetas.com.tr\/wp-json\/wp\/v2\/users\/38"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zetas.com.tr\/wp-json\/wp\/v2\/comments?post=6062"}],"version-history":[{"count":0,"href":"https:\/\/www.zetas.com.tr\/wp-json\/wp\/v2\/avada_portfolio\/6062\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zetas.com.tr\/wp-json\/wp\/v2\/media\/5803"}],"wp:attachment":[{"href":"https:\/\/www.zetas.com.tr\/wp-json\/wp\/v2\/media?parent=6062"}],"wp:term":[{"taxonomy":"portfolio_category","embeddable":true,"href":"https:\/\/www.zetas.com.tr\/wp-json\/wp\/v2\/portfolio_category?post=6062"},{"taxonomy":"portfolio_skills","embeddable":true,"href":"https:\/\/www.zetas.com.tr\/wp-json\/wp\/v2\/portfolio_skills?post=6062"},{"taxonomy":"portfolio_tags","embeddable":true,"href":"https:\/\/www.zetas.com.tr\/wp-json\/wp\/v2\/portfolio_tags?post=6062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}