Tambaya:Muna jin abubuwa da yawa game da kankare mai ɗorewa ko kore amma menene ainihin ma'anar hakan?
Amsa:Wannan tambayar ta fito ne a 2016 Breakfast tare da Masana a Duniyar Kankara kuma masana BASF da suka taru suna da wasu tunani.
David Green:Dorewa yana da motsin rai.Dangane da wanda kuke magana da (masu gine-gine, mai gida, ɗan kwangila) suna iya samun ma'anoni daban-daban.Daga karshe, dukkanmu mun mai da hankali ne kan rage tasirin muhalli, amma muna son yin hakan ta fuskar tattalin arziki.Bai kamata ya yi tsada sosai ba don haɓaka samfuran da ke amfani da ƙarancin abu ko amfani da ƙarancin kuzari.
Muna da waɗannan sabbin abubuwan kuma muna so mu yi amfani da su, amma lamari ne na kasancewa mafi zaɓi a cikin abin da kuke bayarwa don haifar da samfur mai ɗorewa - simintin kanta.Samfurin da ya fi ɗorewa zai buƙaci ƙarancin kulawa azaman ɓangare na farashin mallaka.Don haka jimlar farashin wannan samfurin ya ragu, kuma wannan shine mafi ɗorewa shawara.
Mark Bury:BASF tana da shirin da ake kira Green Sense Concrete.Manufar ita ce inganta kayan haɗin kai don zama mai dorewa gwargwadon yiwuwa.Kuma yayin da yake gaskiya ne cewa yawancin tokar gardawa sun cika ka'idojin, ba lallai ne mu yi amfani da tokar kuda ba.Alal misali, za mu iya amfani da kowane irin foda don maye gurbin siminti na Portland, kamar tarar farar ƙasa, foda na gilashi, tara tara, tara shale mai, ko hayakin siliki na musamman.Tare da kowane foda, za mu iya inganta tarar tare da sinadarai da muke amfani da su a cikin kankare don yin siminti mai dorewa sosai wanda ya dace da ƙayyadaddun ƙira.Sannan za mu yi nazarin muhalli na wancan abu.
Ba lallai ba ne ya zama ash gardama, yana iya zama duk wani foda wanda ke haifar da kankare tare da ƙarfi mai kyau, kyakkyawan karko, da ƙananan sawun muhalli.Off-spec silica fume shine hayaƙin da bai dace da ASTM C 1240 ba, Madaidaicin Ƙimar Silica Fume da ake Amfani da shi a Cakudar Siminti.Wasu daga cikinsu suna da ƙazanta ko kuma ba su kai girman abun ciki na SO2 ba.Yawancin lokaci wannan kayan yana cika ƙasa, amma akwai aikace-aikace da yawa inda zaku iya haɗa shi cikin haɗuwa kuma ku sami kyakkyawan aiki.
Kusan kowane foda za a iya gwadawa.Misali, mun yi wasu bincike kan foda da aka yi daga fale-falen rufin da aka sake sarrafa.Bai gama tashi ba, amma ana samun foda daban-daban daga tushe daban-daban a wurare daban-daban.
Fred Goodwin:Wani al'amari na dorewa shine yin kankare na dogon lokaci.Da zarar an sanya siminti, kiyaye ruwa shine babban fifiko.Kuna buƙatar ruwa a cikin kankare don sanya shi, amma tare da murfin da ya dace a kan ƙarfe mai ƙarfafawa da kuma warkarwa mai kyau da ma'auni na ruwa-ciminti, to, idan za ku iya kiyaye ruwan, ba za ku sami alkali-aggregate reaction ko lalata ko daskare ba- narke ko harin chloride.A wasu kalmomi, kula da kankare - kula da abin da kuke da shi kuma zai šauki tsawon lokaci.Wannan shine ainihin amfanin kankare.
Joe Daczko:Masu aikin kwangila suna magana game da madadin masu ɗaure kamar gardama ash kuma suna gaya wa juna su nisanta shi - yana sanya saitin kankare a hankali, saitin tabo, yana da ɗanko.Don haka dole ne mai shirye-shiryen haɗin gwiwa da ɗan kwangilar su yi magana game da yadda za a yi amfani da madadin ɗaure ko foda don yin kankare mai ɗorewa domin gaskiyar ita ce, za mu iya amfani da waɗannan madadin kayan don cimma yanayin saitin da ɗan kwangila yake so amma dole ne su gaya wa furodusan. wane irin aiki suke nema a cikin cakuda mai dorewa.
Idan kuna son samun damar hawa kan dutsen cikin sa'o'i biyu, gaya musu hakan.Ko kuma idan awa hudu ne, ku gaya musu haka.Wannan yana ba mai samarwa kewayon aikin da aka yi niyya kuma zai san yadda ake samar da gaurayawan da daidaita ma'auni da mahaɗan sinadaran don saduwa da wannan aikin.Amma idan dan kwangilar ya ɗauka cewa kowane 3000 psi matsawa ƙarfin haɗin gwiwa iri ɗaya ne, wannan zato mara kyau ne kuma mai yiwuwa ba zai yi kyau ba.Idan dan kwangila da furodusa sun yi magana, kowa zai fi farin ciki.
An samar da waɗannan tambayoyi da amsoshi yayin Breakfast tare da Masana a Duniyar Kankare 2016, wanda BASF ke ɗaukar nauyi.
Lokacin aikawa: Nuwamba 18-2022