Ɗayan babban bambance-bambance tsakanin busasshen turmi da turmi na gargajiya shi ne cewa busasshen turmi ana gyaggyarawa da ƙaramin adadin sinadarai. Ƙara nau'in ƙari guda ɗaya zuwa busassun turmi ana kiransa gyare-gyare na farko, ƙara biyu ko fiye da ƙari shine gyare-gyare na sakandare. Ingancin busassun turmi ya dogara da zaɓin daidaitattun abubuwan haɗin gwiwa da daidaitawa da daidaitawa na sassa daban-daban. Abubuwan ƙari na sinadarai suna da tsada kuma suna da babban tasiri akan kaddarorin busassun turmi. Sabili da haka, a cikin zaɓin abubuwan haɓakawa, adadin abubuwan ƙari ya kamata ya kasance a farkon wuri. Mai zuwa shine taƙaitaccen gabatarwar ga zaɓin abubuwan da ake amfani da su na sinadarai cellulose ether.
Cellulose ether kuma aka sani da rheological modifier wani nau'in admixture da ake amfani da shi don daidaita kaddarorin rheological na sabon gauraye turmi, kusan ana amfani dashi a kowane irin turmi. Ya kamata a yi la'akari da kaddarorin masu zuwa lokacin zabar nau'in da adadin da aka ƙara:
(1) Riƙe ruwa a yanayin zafi daban-daban;
(2) kauri, danko;
(3) Alakar da ke tsakanin daidaituwa da zafin jiki, da kuma tasiri akan daidaito a gaban electrolyte;
(4) nau'i da digiri na etherification;
(5) haɓakar thixotropy da ikon sakawa na turmi (wanda ya zama dole don turmi mai rufi a tsaye);
(6) Yawan rushewa, yanayi da cikar rushewar.
Bugu da ƙari, ƙara ether cellulose a cikin busassun turmi (kamar methyl cellulose ether), kuma yana iya ƙara vinyl polyvinyl acid ester, wato, gyara na biyu. Mai ɗaure inorganic a cikin turmi (ciminti, gypsum) na iya ba da garantin babban ƙarfin matsawa, amma yana da ɗan tasiri akan ƙarfin ɗaure da ƙarfin lanƙwasawa. Vinyl polyvinyl ester yana gina fim na roba a cikin rami na dutsen siminti, yin turmi na iya ɗaukar nauyin nakasawa, haɓaka juriya. An tabbatar da aiki ta hanyar ƙara nau'i daban-daban na methyl cellulose ether da vinyl polyvinyl ester cikin busassun turmi, bakin ciki Layer shafi farantin bonding turmi, plastering turmi, ado plaster turmi, aerated kankare toshe masonry turmi da kai matakin turmi na zubo bene. za a iya shirya. Hadawa biyu ba zai iya inganta ingancin turmi kawai ba, har ma yana inganta ingantaccen aikin gini.
A cikin aikace-aikacen aikace-aikacen, don inganta ingantaccen aiki, wajibi ne a yi amfani da admixtures da yawa. Mafi kyawun wasa tsakanin ma'auni na ƙari, madaidaicin adadin adadin kuzari, rabo, na iya daga bangarori daban-daban suna da wani tasiri don inganta aikin turmi, amma gyare-gyarensa na turmi lokacin amfani da shi kadai yana da iyaka, wani lokacin har ma yana da mummunar tasiri, irin wannan. kamar yadda fiber doped guda ɗaya, a cikin haɓaka haɓakar turmi, rage matakin rarrabuwa a lokaci guda, Duk da haka, yawan amfani da ruwa na turmi yana ƙaruwa sosai kuma ana adana shi a cikin slurry, wanda ke kaiwa. zuwa rage karfin matsawa. Lokacin da aka ƙara wakili mai shigar da iska, matakin delamination na turmi da yawan ruwa na iya raguwa sosai, amma ƙarfin turmi zai ragu saboda ƙarin kumfa. Inganta turmi masonry don matsakaicin aiki, yayin da guje wa cutar da sauran dukiya, ƙarfin masonry turmi daidaito, mataki na stratification da kuma saduwa da aikin injiniya da bukatun da ka'idoji a kan fasaha ƙayyadaddun, a lokaci guda, kada ku yi amfani da lemun tsami putty, ceton ciminti. , kare muhalli, da dai sauransu, daga rage ruwa, danko, ruwa thickening da iska-entraining plasticizing hangen zaman gaba, Wajibi ne a dauki m matakai don bunkasa da kuma amfani da fili. admixtures.
Lokacin aikawa: Afrilu-29-2022