Dalilai 5 da ke haifar da fasa-kwauri na gama-gari


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(5 Dalilai na Faɗakarwar Kankare na gama gari)

Fashewar da ke haifar da nakasar tushe

Saboda rashin daidaituwa a tsaye ko ƙaura a kwance na tushe, ƙarin damuwa yana haifar da ƙaranci a cikin tsarin, wanda ya zarce ƙarfin juzu'i na simintin simintin, yana haifar da tsagewar tsari.

 

Fassara sakamakon lalata sandunan ƙarfe

Saboda rashin ingancin siminti ko ƙarancin kauri na kariyar, simintin kariya yana lalata da carbon dioxide da carbonized zuwa saman sandunan ƙarfe, yana rage alkalan simintin a kusa da sandunan ƙarfe. Sakamakon shiga tsakani na chloride, abun ciki na chloride ion a kusa da sandunan karfe yana da girma, wanda zai iya haifar da iskar shaka na saman sandar karfe. Fim ɗin ya lalace, kuma ions baƙin ƙarfe a cikin sandunan ƙarfe suna amsawa tare da iskar oxygen da danshin da ke mamaye simintin. Girman samfurin tsatsa, baƙin ƙarfe hydroxide, yana ƙaruwa da kusan sau 2 zuwa 4 na asali na asali, don haka haifar da damuwa na fadadawa a kan simintin da ke kewaye da shi, yana haifar da fatattaka da kwasfa na shinge mai kariya na kankare. , tsatsa na faruwa a tsayi tare da sandunan ƙarfe, kuma tsatsa ta ratsa cikin simintin. Sakamakon lalata, ingantaccen yanki na shingen shinge na ƙarfe yana raguwa, ƙarfin ɗauri tsakanin sandunan ƙarfe da kankare ya raunana, ƙarfin haɓakar tsarin yana raguwa, kuma za a jawo wasu nau'ikan fashe, ƙara lalata sandunan ƙarfe da haifar da lalacewar tsarin.

Don hana lalata sandunan ƙarfe, ya kamata a sarrafa faɗuwar faɗuwa bisa ga ƙayyadaddun ƙayyadaddun ƙirar lokacin ƙira, kuma yakamata a yi amfani da isasshen kauri mai karewa (ba shakka, Layer na kariya bai kamata ya kasance mai kauri ba, in ba haka ba, za a rage ingantaccen tsayin ɓangaren kuma faɗuwar faɗuwar zai karu lokacin da aka matsa); a lokacin ginawa, Sarrafa rabon ruwa-ciminti na siminti da ƙarfafa rawar jiki don tabbatar da ƙaddamar da simintin da kuma hana kutsewar iskar oxygen. A lokaci guda, kula sosai da adadin abubuwan da ke ɗauke da chlorine. Yi taka tsantsan musamman a yankunan bakin teku ko wasu wuraren da ke da iska mai lalata da ruwan karkashin kasa.

 

Fashewar sanyin sanyi

Lokacin da yanayin yanayi ya kasance ƙasa da sifili, simintin ruwa mai cike da ruwa ya daskare, ruwan kyauta ya juya ya zama kankara, kuma ƙarar ta faɗaɗa da 9%, yana haifar da damuwa na faɗaɗa a cikin siminti; a lokaci guda, ruwan da aka sanyaya a cikin shingen gel na simintin (zazzabi mai daskarewa yana ƙasa da -78 digiri) ƙaura da sake rarrabawa a cikin microstructure yana haifar da matsa lamba na osmotic, wanda ya kara ƙarfin faɗaɗawa a cikin siminti, yana rage ƙarfin simintin, kuma yana haifar da raguwa. Musamman daskarewa ya fi shafar siminti a lokacin farko, kuma asarar ƙarfinsa na iya kaiwa 30% zuwa 50% bayan ya girma. A lokacin aikin hunturu, dusar ƙanƙara ta fashe tare da hanyar bututun na iya faruwa idan ba a ɗauki matakan rufewa ba bayan ƙera ramukan da aka riga aka yi.

Fassara sakamakon ingancin kayan gini

Kankare ya ƙunshi siminti, yashi, jimillar, ruwa mai gauraya, da ƙari. Abubuwan da ba su da inganci da ake amfani da su don daidaita simintin na iya haifar da tsagewa a cikin tsarin.

Fassara sakamakon ingancin fasahar gini

A lokacin da ake zubawa, samar da kayan aiki, yin gyare-gyare, sufuri, tarawa, haɗawa, da hawan gine-ginen simintin, idan fasahar ginin ba ta da ma'ana. Ingancin ginin ba shi da kyau; A tsaye, juye-juye, madaidaici, a tsaye, a kwance, da Daban-daban, tsage-tsafe masu zurfi da masu kutsawa sun fi faruwa, musamman a siraran sirara da katanga. Wuri, alkibla, da faɗin faɗuwa sun bambanta dangane da sanadin.

 

Maroki

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(5 Dalilai na Faɗakarwar Kankare na gama gari)

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