Nakuba ukusetshenziswa kwe-carbon steel rebar kwanele kumaphrojekthi amaningi okwakha, kwezinye izimo, ukhonkolo awukwazi ukunikeza isivikelo semvelo esanele. Lokhu kuyiqiniso ikakhulukazi ezindaweni zasolwandle kanye nasezindaweni lapho kusetshenziswa khona ama-deicing agents, okungaholela ekugqwaleni okubangelwa yi-chloride. Uma kusetshenziswa imigoqo yensimbi engagqwali enezintambo zensimbi engagqwali ezindaweni ezinjalo, nakuba ukutshalwa kwezimali kokuqala kuphezulu, kungandisa isikhathi sokuphila kwesakhiwo futhi kunciphise izidingo zokulungisa, ngaleyo ndlela kuncishiswe izindleko zesikhathi eside.
Kungani kufanele usebenzise insimbi engagqwalii-rebar?
Uma ama-ion e-chloride engena kukhonkrithi eqiniswe ngensimbi yekhabhoni futhi ehlangana nensimbi yekhabhoni, i-rebar yensimbi yekhabhoni izobola, futhi imikhiqizo yokubola izokhula futhi ikhule, okubangela ukuqhekeka nokuqhekeka kwekhonkrithi. Ngalesi sikhathi, kufanele kwenziwe ukulungiswa.
I-rebar yensimbi yekhabhoni ingamelana nokuqukethwe kwe-chloride ion okungu-0.4% kuphela, kuyilapho insimbi engagqwali ingamelana nokuqukethwe kwe-chloride ion okungu-7%. Insimbi engagqwali ithuthukisa impilo yesakhiwo futhi inciphisa izindleko zokulungisa nokulungisa.
Yiziphi izinzuzo zensimbi engagqwalii-rebar?
1. Inokumelana okuphezulu nokugqwala kwe-chloride ion
2. Ukungathembeli ku-alkalinity ephezulu yekhonkrithi ukuvikela imigoqo yensimbi
3. Kunganciphisa ukujiya kwengqimba yokuvikela ukhonkolo
4. Asikho isidingo sokusebenzisa i-concrete sealant njenge-silane
5. Ukuxuba ukhonkolo kungenziwa lula ukuze kuhlangatshezwane nezidingo zomklamo wesakhiwo, ngaphandle kokucabangela ukuvikelwa kwemigoqo yensimbi.
6. Kuthuthukisa kakhulu ukuqina kwesakhiwo
7. Zinciphise kakhulu izindleko zokulungisa nokulungisa
8. Nciphisa izindleko zokungasebenzi kanye nokugcinwa kwansuku zonke
9. Ingasetshenziswa ngokukhetha ezindaweni ezinobungozi obukhulu
10. Ekugcineni ingaphinde isetshenziswe ukuze ivuselelwe
Insimbi engagqwali iyenza ninii-rebarkudingeka isetshenziswe?
Uma isakhiwo sichayeka kuma-ion e-chloride amaningi kanye/noma ezindaweni zezimboni ezigqwalisayo
Imigwaqo namabhuloho asebenzisa usawoti wokuhlanza
Uma kudingeka (noma kufiswa) ukuthi i-rebar yensimbi ingabi namandla kazibuthe
Insimbi engagqwali kufanele ibekwe kuphii-rebaringasetshenziswa?
I-rebar yensimbi engagqwali kufanele icatshangelwe ezimweni ezilandelayo
1. Indawo ebhubhisayo
Izindawo zokubopha amabhuloho, amadoko, izindawo zokubeka imikhumbi, izindawo zokuvimba amanzi, izindonga zasolwandle, izinsika zokukhanya noma izinsimbi, amabhuloho omgwaqo omkhulu, imigwaqo, izindawo zokudlula ngaphezulu, izindawo zokudlula ngaphezulu, izindawo zokupaka, njll. emanzini olwandle, ikakhulukazi ezindaweni ezishisayo.
2. Isitshalo sokukhipha usawoti emanzini olwandle
3. Izindawo zokuhlanza indle
4. Izakhiwo zokwakha ezihlala isikhathi eside njengokuvuselelwa kwezakhiwo zomlando kanye nezindawo zokugcina imfucuza yenuzi ziyadingeka.
5. Izindawo ezivame ukuzamazama komhlaba, njengoba izakhiwo zekhonkrithi eziqinisiwe zingase ziwe ngesikhathi sokuzamazama komhlaba ngenxa yokugqwala
6. Imigudu engaphansi komhlaba kanye nemigudu
7. Izindawo ezingenakuhlolwa noma ezingenakulungiselelwa ukulungiswa
Indlela yokusebenzisa insimbi engagqwalii-rebar?
Emazweni angaphandle, i-rebar yensimbi engagqwali ikhiqizwa kakhulu ngokwezinga laseBrithani i-BS6744-2001 kanye nezinga laseMelika i-ASTM A 955/A955M-03b. IFrance, i-Italy, iJalimane, iDenmark, neFinland nazo zinezindinganiso zazo zezwe.
EShayina, indinganiso ye-rebar yensimbi engagqwali yi-YB/T 4362-2014 “I-rebar yensimbi engagqwali yekhonkrithi eqinisiwe”.
Ububanzi be-rebar yensimbi engagqwali bungamamilimitha angu-3-50.
Amabanga atholakalayo afaka insimbi engagqwali ephindwe kabili 2101, 2304, 2205, 2507, insimbi engagqwali e-austenitic 304, 316, 316LN, 25-6Mo, njll.
Isikhathi sokuthunyelwe: Julayi-25-2023