Menene polycarboxylate superplasticizer?

(Mene ne polycarboxylate superplasticizer?)

Menene polycarboxylate superplasticizer? 

Polycarboxylate superplasticizer wani nau'i ne na babban aikin rage ruwa da kuma nau'in rarraba siminti a aikace-aikacen siminti. 

Ana amfani da su sosai a manyan tituna, gadoji, madatsun ruwa, ramuka, manyan gine-gine da sauran ayyuka. 

Samfurin kore ne, mara ƙonewa, mara fashewa, kuma ana iya ɗaukarsa cikin aminci ta jirgin ƙasa da mota. 

Ka'idar polycarboxylic acid superplasticizer. 

Ka'idodin polycarboxylic acid superplasticizer shine kamar haka: 

1. Tasirin hanawa

Lokacin da aka ƙara ƙwayoyin polycarboxylic acid superplasticizer zuwa siminti, babban sarkar anion ana sanya shi a saman simintin siminti, kuma samfuran hydration ɗin su da sarkar gefe ana sanya su cikin yanayin ruwa. Don haka, an kafa Layer adsorption tare da sarkar reshe da sarkar gefe a saman sassan siminti. Lokacin da barbashi na siminti suna kusa da juna, don mamaye Layer adsorption. 

Ana samar da ƙarfin tunkuɗewa mai ƙarfi tsakanin sarƙar reshe da sashin gefe na polycarboxylic acid superplasticizer akan saman siminti, wanda ke juyar da ruwa tsakanin barbashi siminti zuwa ruwan kyauta, yana haɓaka ruwan siminti. 

Tsawon sarkar gefe da sarkar reshe na polycarboxylate superplasticizer, da kauri da adsorption Layer kafa a saman siminti barbashi, da kuma mafi girma da steric repulsion tsakanin siminti barbashi, da mafi amfani ga watsar da siminti barbashi da kuma inganta kankare fluidity. . 

2. Wetting da lubrication sakamako: polycarboxylic acid superplasticizer kwayoyin dauke da babban adadin karfi polar hydrophilic kungiyoyin kamar carboxyl, sulfonic acid, da kuma hydroxyl kungiyoyin, wanda zai iya hade da ruwa kwayoyin da samar da wani hydration fim a saman siminti barbashi. Yana iya rage yawan tashin hankali tsakanin ruwa da siminti a ƙarƙashin yanayin yawan amfani da ruwa akai-akai da adadin ƙwayoyin siminti, ƙarami da tashin hankali tsakanin ruwa da siminti. 

Mafi girman wurin jika na danshi a saman simintin siminti, yana da sauƙi ga barbashin siminti su zamewa. Yana tarwatsewa in mun gwada, kuma ba shi da sauƙi don haɓaka haɓakar haɓakar simintin siminti. 

3. Tasirin ƙwallon ƙwallon iska mai haɗawa da iska: polycarboxylic acid superplasticizer yana da wani tasiri mai haɓaka iska; idan aka hada shi da siminti, za a rika samar da kananan kumfa a cikin siminti, sannan cajin kumfa na iska daidai yake da na siminti, sai kuma abin da ake kira electrostatic repulsion a tsakaninsu ta yadda za a iya watsewa. 

Bugu da kari, kumfa na iya haifar da warewa ta jiki tsakanin barbashi na siminti da kuma hana tashin hankali tsakanin sassan siminti. A lokaci guda kuma, kumfa da kansu na iya taka rawa kamar ƙwallon ƙafa kuma suna haɓaka zamewar simintin siminti, wanda ke da fa'ida ga ƙarancin siminti. 

Abubuwan da ake amfani da su na polycarboxylic acid superplasticizers sun haɗa da: 

1. Abun ciki yana da ƙasa

A cikin yanayin ruwa iri ɗaya, yana da ɗan tasiri akan saita lokacin siminti kuma yana iya magance sabani kamar raguwar ruwa, shan iska, jinkirtawa, da sauransu. 

2. Babban tsanani

Yana iya inganta farkon da kuma daga baya ƙarfin kankare kuma yana inganta haɓaka juriya, juriya na sanyi, yuwuwar ion chloride, da juriya na siminti. 

3. Kudin yana da ƙasa

Rage yawan amfani da ruwa na siminti da adadin siminti, don haka rage farashin. 

4. Kyakkyawan karko

Inganta juriya na sulfate na kankare da hana halayen alkali-aggregate don inganta ƙarfin siminti. 

5. Kyakkyawan aikin muhalli

Polycarboxylic acid superplasticizer baya dauke da formaldehyde, mallakar koren kare muhalli ne, kuma baya shafar lafiyar dan adam. 

Abun ciki na polycarboxylic acid superplasticizer

Abubuwan da ke cikin polycarboxylic acid superplasticizer an bayyana shi azaman kashi na jimlar adadin siminti. 

Dangane da yanayi daban-daban na injiniya da buƙatu, an ƙaddara mafi kyawun abun ciki ta hanyar gwaje-gwaje. 

Kewayon abun ciki na polycarboxylic acid superplasticizer shine 0.4% -2.5%, kuma abun cikin da aka saba amfani dashi shine 0.8% -1.5%.

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(Mene ne polycarboxylate superplasticizer?)