Mayeso a methylene blue pa dongo, miyala ya zomangamanga, ndi nthaka

Wopanga konkire akukana mchenga wobweretsedwa chifukwa mtengo wake wa methylene blue wapitirira malire otchulidwa m'zofunikira. Wogulitsa akutsutsa: labotale yake inayeza nambala yocheperapo pa mchenga womwewo. Malabotale onse awiri anagwiritsa ntchito methylene blue. Onse anapereka zotsatira mu magalamu pa kilogalamu. Imodzi yokha ndiyo inayesa gawo la tinthu lotchulidwa m'zofunikira, ndipo manambala awiriwo sanali oyenera kuyerekezedwa n'komwe.

Vutoli limachokera ku mmene mayesowo amaganiziridwira. Mawu akuti “mayeso a methylene blue” amamveka ngati akunena za chida chimodzi chokhala ndi sikelo imodzi. Kwenikweni, ndi gulu la njira zomwe zimagwiritsa ntchito utoto umodzi koma zimatanthauzira zinthu zosiyanasiyana zoyezedwa: zinthu zosiyanasiyana, magawo osiyanasiyana a kukula kwa tinthu, zizindikiro zosiyanasiyana zomalizira mayeso, ndi maziko osiyanasiyana operekera zotsatira. Cholakwika ndi kuganiza kuti kugwiritsa ntchito dzina limodzi la utoto kumatanthauza zotsatira zofanana. Magawo otsatirawa amasiyanitsa njira za m'gululi kuti wowerenga athe kusankha njira yoyenera zinthu zake ndi kumasulira nambala iliyonse molingana ndi maziko ake.

Zimene utotowo umayezadi

Methylene blue ndi utoto wokhala ndi ayoni a chaji yabwino. Maminero a dongo omwe ali ndi mphamvu yaikulu yomata zinthu pamwamba pake amamamatitsa utotowo kwambiri, pamene quartz ndi tinthu tina ting'onoting'ono tosagwira ntchito yotere timatenga wochepa kwambiri. Choncho kuwonjezera utoto pang'onopang'ono ku chisakanizo cha tinthu ndi madzi chomwe chikukankhidwa kumayesa kuchuluka kwa malo a pamwamba ogwira ntchito: utoto wosamamatira umaonekera m'madzi pokhapokha malo ogwira ntchitowo atadzazidwa. N'chifukwa chake mayeso a dongo ndi methylene blue amakhudzidwa ndi kuchuluka komanso makhalidwe a maminero a dongo ogwira ntchito, osati ndi kuchuluka konse kwa tinthu ting'onoting'ono kokha.

Pali zinthu ziwiri zimene zimatsatira pamenepa. Choyamba, zotsatira zimadalira tinthu timene tili m'gawo loyesedwa. Njira yoyesa gawo la 0/2 mm ndi njira yoyesa fumbi lofewa kwambiri lokha zimapereka manambala osiyana pa chitsanzo chachikulu chomwecho, chifukwa kuchuluka kwa dongo m'magawowo kumasiyana. Chachiwiri, yuniti yoperekera zotsatira imakhala ndi tanthauzo pokhapokha itatchulidwa limodzi ndi gawolo. Funso lakuti magalamu a utoto pa kilogalamu ya chiyani kwenikweni ndi mbali ya zotsatira. Buku lotsagana nalo lonena za kuyeza kumamatira kwa methylene blue pamwamba pa zinthu limafotokoza mwatsatanetsatane mmene kutenga utotoku kumachitikira.

Mayeso a miyala ya zomangamanga: EN 933-9 imatanthauzira mitengo iwiri, osati umodzi

Muyezo wogwiritsidwa ntchito ku Ulaya ndi EN 933-9, Mayeso a makhalidwe a mawonekedwe ndi kukula kwa miyala ya zomangamanga, Gawo 9: Kuwunika tinthu ting'onoting'ono, Mayeso a methylene blue. Kope lapano ndi EN 933-9:2022, lomwe linalowa m'malo mwa kope la 2009 lokhala ndi kusintha kwake kwa 2013, ndipo zinthu zimene muyezowu umakhudza zafotokozedwa mwachidule pa tsamba la miyezo la CEN ndi CENELEC. Muyezowu umatanthauzira mitengo iwiri yosiyana. MB imayesedwa pa gawo la 0/2 mm. MB_F, yomwe yafotokozedwa m'zowonjezera zokhala ndi zofunikira za muyezo, imayesedwa pa gawo la 0/0.125 mm. Kutchula zotsatira za 0/2 mm kuti “MB_F” ndi kulakwitsa kusankha gulu la zotsatira, osati kusankha mmene mungazungulitsire nambala.

Njirayi imasakaniza gawo loyesedwa ndi madzi pafupifupi 500 mL, kenako imawonjezera utoto kuchokera ku yankho la 10 g/L uku ikusonkhezera. Pambuyo powonjezera utoto nthawi iliyonse, woyesayo amaika dontho la chisakanizocho pa pepala losefera lotchulidwa. Chizindikiro chomalizira ndi cha mayeso odziwika a dontho: utoto wosamamatira umaoneka ngati mphete ya buluu wopepuka ya m'lifupi pafupifupi 1 mm yozungulira dontho lapakati, ndipo imakhalapo kwa mphindi zisanu. Zotsatira zimaperekedwa mu magalamu a methylene blue pa kilogalamu ya gawo louma loyesedwa. Choncho MB imakhala ndi mayunitsi a g/kg a zinthu za 0/2 mm, ndipo MB_F imakhala ndi g/kg a zinthu za 0/0.125 mm. Mchenga womwewo ukhoza kukwaniritsa zofunikira za MB koma kulephera pa MB_F, ndipo n'chifukwa chake zofunikirazo ziyenera kutchula mtundu wa mtengo umene zikutanthauza.

Njira za ku America zoyesera miyala ya zomangamanga zimagwiritsa ntchito mfundo zosiyanasiyana

Ku United States, njira ziwiri zimayesa zinthu zofanana pogwiritsa ntchito zida zosiyanasiyana. ASTM C1777-20, yomwe ASTM imatchula kuti ikugwiritsidwabe ntchito, imayeza mtengo wa methylene blue wa zinthu zodutsa pa sefa ya 4.75 mm (No. 4) pogwiritsa ntchito chida choyezera mtundu pa 610 nm m'malo mwa mayeso a dontho pa pepala losefera. AASHTO T 330, yomwe imapezeka kudzera ku sitolo ya AASHTO, imagwiritsabe ntchito chizindikiro chomalizira cha mayeso a dontho chooneka ndi maso ndipo imayesa gawo lodutsa pa 75 µm. Njira zonsezi zimapereka kuchuluka kwa utoto wotengedwa pa yuniti ya kulemera, komwe mwa mayunitsi kumafanana ndi magalamu pa kilogalamu. Koma ASTM imachenjeza momveka kuti zotsatira za C1777, AASHTO T 330, ndi EN 933-9 zingasiyane kwambiri. Magawo oyesedwa amatanthauziridwa mosiyana, kuchuluka kwa dongo m'magawowo kumasiyana, ndipo kuyeza ndi chida cha mtundu si ntchito yofanana ndi kuweruza mphete pa pepala ndi maso.

Choncho kwa wogula mchenga, kumasulira zotsatira za mayeso a methylene blue pa miyala ya zomangamanga kumadalira zinthu zina: nambalayo imathandiza kuzindikira dongo logwira ntchito lomwe lingawononge khalidwe la zinthu, m'gawo lotchulidwa komanso potsatira njira yotchulidwa. Labotale yoyesa gawo lina, kapena yowerenga chizindikiro chomalizira pogwiritsa ntchito mfundo ina, ikuchita mayeso ena ngakhale botolo la utoto litakhala lofanana.

Mayeso a nthaka: VBS ya ku France ndi ya ntchito za nthaka, osati konkire

Nthaka ili ndi njira yakeyake m'gululi. Valeur de bleu de sol, yofupikitsidwa kuti VBS, imayeza kuchuluka kwa methylene blue komwe nthaka imatenga kuti nthakayo igawidwe m'magulu a ntchito za nthaka ndi kumanga misewu. Njira yakale ndi muyezo wa ku France wa NF P94-068, womwe walembedwa mu ndandanda ya AFNOR. Muyezo umenewo wa 1998 wachotsedwa ndipo walowedwa m'malo ndi NF EN 17542-3:2022. Choncho njira yomwe imatchula NF P94-068 popanda kuyang'ana kope lapano ikugwiritsa ntchito chikalata chomwe chinalowedwa m'malo.

Mayeso a dontho a VBS amafanana ndi mayeso a dontho a miyala ya zomangamanga: utoto umawonjezeredwa motsatizana ku chisakanizo cha nthaka ndi madzi, ndipo madontho amaikidwa pa pepala losefera mpaka mphete yozungulira yokhalitsa itaonekera. Koma chinthu choyezedwa chimasiyana. Labotale imayesa gawo la 0/5 mm, ndipo kawirikawiri VBS imaperekedwa mu magalamu a utoto wa buluu pa 100 g ya nthaka youma, molingana ndi zinthu za 0/50 mm. Musasinthe VBS kukhala mtengo wa MB wa EN 933-9 pongochulukitsa kapena kugawa ndi khumi. Chinthu cha khumicho chimasintha mayunitsi; sichimasintha gawo la tinthu, kukonzekera chitsanzo, kapena maziko amene zotsatira zawerengedwera. VBS ya nthaka ndi MB ya miyala ya zomangamanga zimayankha mafunso osiyanasiyana a uinjiniya, ndipo malire aliwonse ndi a njira yake.

Bentonite ndi matope obowolera: mphamvu yogwira ntchito ndi kutenga ayoni, osati ukhondo

Nthambi yachitatu ya gululi sikukhudzana ndi kuvomereza kapena kukana miyala ya zomangamanga. M'madzi obowolera, mayeso a methylene blue a matope obowolera amayeza kuchuluka kwa dongo logwira ntchito lomwe matopewo ali nalo kale, kuphatikizapo bentonite yogulitsidwa ndi tinthu tolimba togwira ntchito tochokera pobowola, ndipo amayerekezera mphamvu yonse yosinthanitsa ayoni a chaji yabwino. Njira yapano ili mu API RP 13B-1, Mayeso a madzi obowolera opangidwa pamaziko a madzi, yomwe kope lake lachisanu ndi chimodzi ndi la January 2026; ndandanda ya miyezo ya API ndi gwero lovomerezeka lodziwira kope limene likugwira ntchito. Chitsanzo cha matope chimawonjezeredwa asidi ndi kuthandizidwa ndi hydrogen peroxide kuti chichotse zinthu za kaboni zosokoneza mayesowo, kenako chimayesedwa powonjezera utoto mpaka mphete itaonekera pa pepala losefera. Zotsatira, mphamvu yotenga methylene blue, zimaperekedwa pa voliyumu ya madzi obowolera ndipo zingasinthidwe kukhala kuchuluka kofanana kwa bentonite potengera mfundo zotchulidwa zokhudza mphamvu yosinthanitsa ayoni ya bentonite.

Bentonite youma payokha imayesedwanso mosiyana. API RP 13I imakhudza mayeso a labotale, kuphatikizapo njira ya methylene blue pa bentonite yomwazidwa m'madzi, yomwe imapereka kuyerekezera kwa mphamvu yosinthanitsa ayoni mu milliequivalents pa 100 g. ASTM C837, Njira Yokhazikika Yoyesera Indekisi ya Methylene Blue ya Dongo, yomwe kusinthidwa kwake kwaposachedwa ndi C837-09(2024) ndipo ikugwiritsidwabe ntchito, imayeza kumamatira kwa utoto pa dongo lenilenilo ndipo imafotokoza kuti indekisiyo imakhudzana ndi mphamvu yosinthanitsa ayoni a chaji yabwino komanso makhalidwe ena a dongo. Awa ndi mayeso a mphamvu yogwira ntchito ya dongo. Kugwiritsa ntchito malire a ukhondo wa miyala ya zomangamanga pa indekisi ya bentonite, kapena mphamvu yotenga ayoni ya bentonite pa matope obowolera, kumabwereza cholakwika choyambirira pa zinthu zatsopano.

Kuyerekezera njira

Tebulo lotsatirali ndi lofunika polozera m'nkhaniyi. Musanayerekezere manambala awiri, onetsetsani kuti mizere yake ikugwirizana.

Yang'anani kope la muyezo uliwonse musanasindikize njira yochokera m'tebuloli. Miyezo imasinthidwa, ndipo tebulo limalemba makope omwe anatsimikiziridwa panthawi ya kafukufuku, osati ndandanda ya mabuku yomwe ingakhale yolondola nthawi zonse. Ntchito zina zogwirizana ndi kuyesa zinthu pogwiritsa ntchito utotowu, kuphatikizapo mayesero a ma membrane ndi ma polima, zafotokozedwa m'buku lotsagana nalo lonena za kuyesa zinthu ndi methylene blue.

Chifukwa chake malire a njira imodzi sagwira ntchito pa njira ina

Tibwerere ku mchenga wokanidwawo. Tiyerekeze kuti malire a zofunikira analembedwa a EN 933-9 MB pa 0/2 mm, pamene labotale ya wogulitsa inapereka MB_F pa 0/0.125 mm, kapena mtengo woyezedwa ndi chida cha mtundu motsatira ASTM C1777. Gawo la tinthu tocheperako limakhala ndi dongo lochuluka kwambiri poyerekeza ndi kulemera kwake, choncho nambala yake imakhala yokwera chifukwa cha mmene gawo loyesedwa lasankhidwira; chida choyezera mtundu chimawerenga chizindikiro chakuthupi chosiyana ndi mpheteyo. Kusagwirizana kulikonse pa ziwirizi kungasinthe kuvomerezedwa kukhala kukanidwa. Mkanganowo suli wa amene anachita bwino kwambiri kuyeza powonjezera utoto. Ndi wa zinthu ziwiri zosiyana zoyezedwa zomwe zimagwiritsa ntchito dzina limodzi la utoto.

Choncho lamuloli ndi lokhazikika. Malire a zofunikira ndi ovomerezeka pa njira, gawo la tinthu, ndi maziko operekera zotsatira omwe anawapanga okha. Kukhazikitsa malire pogwiritsa ntchito njira yolowa m'malo kumafuna ubale wotsimikiziridwa ndi mayesero pa zinthu zoimira zomwe zayesedwa ndi njira zonse ziwiri, osati kusintha mayunitsi. Ndipo chifukwa mayeso a methylene blue a dongo logwira ntchito amakhudzidwa ndi makhalidwe a dongo komanso kuchuluka kwake, ngakhale ubale wabwino wopezeka pa zinthu zochokera kudera limodzi la miyala ndi nthaka sungakhale woyenera pa zochokera kudera lina.

Mndandanda wachidule wotsimikizira musanayese

Lembani zinthu zoyesedwa, muyezo ndi chaka cha kope lake, gawo la tinthu loyesedwa, lamulo la chizindikiro chomalizira, ndi maziko operekera zotsatira musanakonze yankho lililonse. Tsimikizirani ndi bungwe lopereka muyezowo kuti kope lotchulidwa ndi lapano. Kenako konzani kuchuluka kwa utoto m'yankho, kukhazikitsa kulondola kwa zida, ndi zowongolera zoyenera njirayo. Lipoti lotchula zinthu zonse zisanuzi limathandiza wowerenga aliyense kubwerezanso kuyeza ndipo limalepheretsa dzina la utoto kulowa m'malo mwa kufotokoza njira yomwe yagwiritsidwa ntchito.