Hydroxypropyl methylcellulose (HPMC) galibi yana taka rawa wajen riƙe ruwa, kauri da inganta aikin gini a cikin siminti, gypsum da sauran kayan foda. Kyakkyawan aikin riƙe ruwa zai iya hana busar da foda da tsagewa yadda ya kamata saboda yawan asarar ruwa, kuma yana sa foda ya sami tsawon lokacin gini.
A gudanar da zaɓin kayan siminti, tarawa, tarawa, abubuwan riƙe ruwa, abubuwan ɗaurewa, masu gyara aikin gini, da sauransu. Misali, turmi mai tushen gypsum yana da ingantaccen aikin haɗin gwiwa fiye da turmi mai tushen siminti a cikin yanayin bushewa, amma aikin haɗin gwiwarsa yana raguwa da sauri a ƙarƙashin yanayin sha danshi da shan ruwa. Ya kamata a rage ƙarfin haɗin gwiwa na turmi mai rufin da aka yi niyya, wato, ƙarfin haɗin gwiwa tsakanin layin tushe da wakilin maganin haɗin gwiwa ≥ ƙarfin haɗin gwiwa tsakanin turmi mai layin tushe da wakilin maganin haɗin gwiwa ≥ haɗin gwiwa tsakanin turmi mai layin tushe da turmi mai layin saman Ƙarfi ≥ ƙarfin haɗin gwiwa tsakanin turmi mai layin saman da kayan putty.
Babban burin ruwa na turmi na siminti a kan tushe shine cewa samfurin ruwa na siminti yana shan ruwa tare da tushe, yana shiga cikin tushe, kuma yana samar da "haɗin maɓalli" mai tasiri da tushe, don cimma ƙarfin haɗin da ake buƙata. Ruwa kai tsaye a saman tushe zai haifar da watsewa sosai a cikin shan ruwa na tushe saboda bambance-bambance a cikin zafin jiki, lokacin shayarwa, da daidaiton ruwa. Tushen yana da ƙarancin shan ruwa kuma zai ci gaba da shan ruwan a cikin turmi. Kafin ruwan siminti ya ci gaba, ana sha ruwan, wanda ke shafar ruwan siminti da shigar samfuran ruwa cikin matrix; tushe yana da babban shan ruwa, kuma ruwan da ke cikin turmi yana kwarara zuwa tushe. Matsakaicin saurin ƙaura yana da jinkiri, har ma da Layer mai wadataccen ruwa ana samar da shi tsakanin turmi da matrix, wanda kuma yana shafar ƙarfin haɗin. Saboda haka, amfani da hanyar ruwa na tushen gama gari ba wai kawai zai kasa magance matsalar shan ruwa mai yawa na tushen bango yadda ya kamata ba, amma zai shafi ƙarfin haɗin gwiwa tsakanin turmi da tushe, wanda ke haifar da rami da fashewa.
Tasirin cellulose ether akan ƙarfin matsewa da yanke turmi na siminti.
Da ƙarin sinadarin cellulose ether, ƙarfin matsewa da yankewa yana raguwa, saboda cellulose ether yana shan ruwa kuma yana ƙara porosity.
Aikin haɗin gwiwa da ƙarfin haɗin gwiwa ya dogara ne akan ko haɗin da ke tsakanin turmi da kayan tushe zai iya kasancewa cikin kwanciyar hankali da inganci na dogon lokaci.
Abubuwan da ke shafar ƙarfin haɗin gwiwa sun haɗa da:
1. Halayen shan ruwa da kuma kauri na mahaɗin substrate.
2. Ƙarfin riƙe ruwa, ƙarfin shigar ruwa da ƙarfin tsarin turmi.
3. Kayan aikin gini, hanyoyin gini da kuma yanayin gini.
Saboda tushen ginin turmi yana da takamaiman shan ruwa, bayan saman rufin ya sha ruwan da ke cikin turmi, ƙarfin ginin turmi zai lalace, kuma a cikin mawuyacin hali, kayan siminti da ke cikin turmi ba za su jike sosai ba, wanda ke haifar da ƙarfi, na musamman. Dalilin shi ne cewa ƙarfin haɗin gwiwa tsakanin turmi mai tauri da saman rufin yana raguwa, wanda ke haifar da turmi ya fashe ya faɗi. Maganin gargajiya ga waɗannan matsalolin shine a shayar da tushen ruwa, amma ba zai yiwu a tabbatar da cewa tushen ya jike daidai gwargwado ba.
Lokacin Saƙo: Mayu-06-2023