Kwanan Wata: 6, Mayu, 2024
Tushen laka sun bambanta, kuma abubuwan da ke cikin su ma sun bambanta. Laka a cikin yashi da tsakuwa ya kasu kashi uku: foda na farar ƙasa, yumbu, da calcium carbonate. Daga cikin su, dutse foda ne mai kyau barbashi a kerarre yashi tare da barbashi size kasa da 75 μm. Dutsen iyaye ɗaya ne da yashi da aka kera kuma yana da nau'in ma'adinai iri ɗaya. Babban sashi shine CaCO3, wanda ke cikin ɓangaren gradation na yashi da aka kera.
(1) Bincike akan ka'idar aiki na laka foda da polycarboxylic acid mai rage ruwa:
An yi imani da cewa babban dalilin da ya sa laka foda ke shafar kankare gauraye da lignosulfonate da naphthalene na tushen ruwa na rage wakilai shine gasar adsorption tsakanin foda da siminti. Har yanzu babu wani cikakken bayani game da ka'idar aiki na laka foda da polycarboxylic acid mai rage ruwa. Wasu malaman sunyi imanin cewa ka'idar aiki na laka foda da wakili mai rage ruwa yana kama da siminti. Ana tallata wakili mai rage ruwa a saman siminti ko foda laka tare da ƙungiyoyin anionic. Bambanci shi ne cewa adadin da adadin adsorption na wakili mai rage ruwa ta hanyar laka foda ya fi girma fiye da na siminti. A lokaci guda, babban yanki na musamman da kuma tsarin da aka tsara na ma'adanai na yumbu kuma suna sha ruwa da yawa kuma suna rage ruwa mai kyauta a cikin slurry, wanda ke shafar aikin gine-gine na kankare.
(2) Tasirin ma'adanai daban-daban akan ayyukan rage ruwa:
Bincike ya nuna cewa kawai yumbu mai yumbu tare da haɓaka mai mahimmanci da kaddarorin shayarwa na ruwa zai sami tasiri mai mahimmanci akan aikin aiki da kuma kayan aikin injiniya daga baya. Laka na yau da kullun a cikin tarawa sun haɗa da kaolin, illite da montmorillonite. Irin wannan nau'in wakili mai rage ruwa yana da ma'ana daban-daban ga foda na laka tare da nau'o'in ma'adinai daban-daban, kuma wannan bambanci yana da matukar muhimmanci ga zaɓin masu rage ruwa da kuma samar da magunguna masu hana ruwa da laka da kuma maganin laka.
(3) Tasirin abun ciki na laka akan kaddarorin kankare:
Aiki yi na kankare ba kawai rinjayar da kafa na kankare, amma kuma rinjayar daga baya inji Properties da durability na kankare. Ƙarar ƙwayar laka ba ta da ƙarfi, raguwa lokacin bushe kuma yana faɗaɗa lokacin da aka jika. Yayin da abun ciki na laka ya karu, ko dai polycarboxylate mai rage ruwa ko wakili mai rage ruwa na naphthalene, zai rage yawan raguwar ruwa, ƙarfi, da slump na kankare. Fall, da sauransu, suna kawo babbar lalacewa ga siminti. Ma'auni na ƙasa "Yashi don Gina" (GB/T14684-2011) ya nuna cewa lokacin da ƙarfin kankare shine C30 ko akwai juriya na sanyi, anti-seepage ko wasu buƙatu na musamman, abun ciki na laka a cikin yashi na halitta ba zai wuce 3.0 ba. %, kuma abun cikin dunƙulewar laka bazai wuce 1.0 % ba; lokacin da ƙimar ƙarfin kankare ya kasance ƙasa da C30, abun cikin foda na laka ba zai wuce 5.0% ba kuma abun cikin toshe laka ba zai wuce 2.0%.
Lokacin aikawa: Mayu-06-2024
