Kwanan Wata:9,Jan,2023

Menene masu rage ruwa?

Masu rage ruwa (irin su Lignosulfonates) wani nau'i ne na admixture da ake ƙarawa da kankare yayin aikin hadawa. Masu rage ruwa na iya rage abun ciki na ruwa da kashi 12-30% ba tare da lalata aikin siminti ko ƙarfin injina na kankare (wanda yawanci muke bayyanawa dangane da ƙarfin matsawa). Akwai wasu sharuɗɗa na masu rage ruwa, waɗanda sune Superplasticizers, plasticizers ko manyan masu rage ruwa (HRWR).

Nau'o'in Addmixtures masu rage ruwa

Akwai nau'o'in nau'ikan nau'ikan abubuwan da ke rage ruwa. Kamfanonin kera suna ba da sunaye daban-daban da rabe-rabe ga waɗannan abubuwan haɗin gwiwa kamar masu hana ruwa, masu hana ruwa, kayan aikin iya aiki, da sauransu.

Gabaɗaya, za mu iya rarraba masu rage ruwa zuwa nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan abubuwan da ke rage ruwa da ruwa da ruwa sun kasu kashi uku bisa ga tsarin sinadaransu (kamar yadda yake cikin Table 1).

Lignosulfonates, hydroxycarboxylic acid, da kuma hydroxylated polymers.

Daga ina Lignin ya fito?

Lignin wani abu ne mai rikitarwa wanda ke wakiltar kusan kashi 20% na kayan itace. A lokacin tsari don samar da ɓangaren litattafan almara daga itace, an samar da barasa mai sharar gida a matsayin samfurin da ya ƙunshi hadadden cakuda abubuwa, ciki har da bazuwar samfuran lignin da cellulose, samfuran sulfonation na lignin, carbohydrates daban-daban (sugars) da sauransu. free sulfurous acid ko sulfates.

Na gaba neutralization, hazo da fermentation tafiyar matakai samar da kewayon lignosulfonates na sãɓãwar launukansa tsarki da kuma abun da ke ciki dangane da dama dalilai, kamar neutralizing alkali, da pulping tsari amfani, da mataki na fermentation har ma da irin da shekaru na itace amfani kamar yadda ɓangaren litattafan almara.

Lignosulfonates azaman masu rage ruwa a cikin Kankara

Lignosulfonate superplasticizer kashi shine yawanci kashi 0.25, wanda zai iya haifar da raguwar ruwa zuwa kashi 9 zuwa 12 cikin 100 na siminti (0.20-0.30%). Kamar yadda aka yi amfani da shi a cikin adadin da ya dace, ƙarfin kankare ya inganta da 15-20% idan aka kwatanta da simintin tunani. Ƙarfin ya karu da kashi 20 zuwa 30 bayan kwanaki 3, da kashi 15-20 bayan kwanaki 7, kuma da adadin guda bayan kwanaki 28.

Ba tare da canza ruwa ba, siminti na iya gudana cikin 'yanci, yana sauƙaƙa yin aiki da shi (watau ƙara ƙarfin aiki).

Ta amfani da ton ɗaya na lignosulfonate superplasticizer foda maimakon siminti, za ka iya ajiye tan 30-40 na siminti yayin da kake riƙe da ɓangarorin kankare iri ɗaya, ƙarfi, da kankare.

A cikin daidaitaccen yanayi, simintin da aka haɗe da wannan wakili na iya jinkirta kololuwar zafi na hydration fiye da sa'o'i biyar, lokacin saitin ƙarshe na simintin fiye da sa'o'i uku, da lokacin saita kankare fiye da sa'o'i uku idan aka kwatanta da siminti. Wannan yana da fa'ida don ginin rani, jigilar kayayyaki, da simintin taro.

Lignosulfonate superplasticizer tare da micro-entraining na iya haɓaka aikin simintin dangane da daskare-narke rashin ƙarfi.