Cellulose ether na slag ájá ụrọ

Iji P·II 52.5 cement ciment dị ka cimentious ihe na nchara slag ájá dị ka ezigbo mkpokọta, a na-akwadebe ájá ájá nke nwere mmiri dị elu na ike dị elu site n'ịgbakwunye ihe mgbakwunye kemịkal dị ka onye na-ebelata mmiri, latex powder and defoamer Special Mortar, na mmetụta nke abụọ dị iche iche. viscosities (2000mPa·s na 6000mPa·s) nke hydroxypropyl methylcellulose ether (HPMC) na njide mmiri ya, mmiri na ike na-amụ. Nsonaazụ gosiri na: (1) Ma HPMC2000 na HPMC6000 nwere ike ịbawanye ọnụ ọgụgụ njide mmiri nke ngwa agha agwakọtara ọhụrụ ma melite arụmọrụ njide mmiri ya; (2) Mgbe ọdịnaya nke cellulose ether dị ala, mmetụta dị na mmiri mmiri nke ngwa agha ahụ apụtaghị. Mgbe ọ na-abawanye na 0.25% ma ọ bụ n'elu, ọ na-enwe mmetụta na-emebi emebi na mmiri mmiri nke ngwa agha, n'ime nke mmetụta mmebi nke HPMC6000 pụtara ìhè karị; (3) mgbakwunye nke cellulose ether enweghị mmetụta doro anya na ike mkpakọ nke ụbọchị 28 nke ngwa agha, ma mgbakwunye nke HPMC2000 na-ekwesịghị ekwesị oge, o doro anya na ọ dịghị mma na ike mgbanwe nke afọ dị iche iche, ma n'otu oge ahụ na-ebelata nke ukwuu. mmalite (ụbọchị 3 na ụbọchị 7) ike mkpakọ nke ngwa agha; (4) Mgbakwunye nke HPMC6000 nwere mmetụta ụfọdụ na ike mgbanwe nke afọ dị iche iche, mana mbelata ahụ dị ala karịa nke HPMC2000. N'ime akwụkwọ a, a na-ewere na HPMC6000 kwesịrị ịhọrọ mgbe ị na-akwadebe nchara slag ájá pụrụ iche nke nwere mmiri mmiri dị elu, nnukwu njigide mmiri na ike dị elu, na usoro ọgwụgwọ ekwesịghị ịbụ ihe karịrị 0.20%.

Isi okwu:ígwè slag ájá; cellulose ether; viscosity; arụ ọrụ arụ ọrụ; ike

okwu mmeghe

Steel slag bụ ihe sitere na mmepụta nke ígwè. Site na mmepe nke ụlọ ọrụ ígwè na ígwè, nkwụsị nke ígwè slag kwa afọ amụbawo ihe dị ka nde tọn 100 n'afọ ndị na-adịbeghị anya, na nsogbu nke ịkwakọba n'ihi ọdịda nke iji ihe onwunwe eme ihe n'oge dị oké njọ. Ya mere, iji ihe onwunwe na mkpofu ígwè slag site na nkà mmụta sayensị na ụzọ dị irè bụ nsogbu a na-apụghị ileghara anya. Steel slag nwere njirimara nke njupụta dị elu, ederede siri ike na ike mkpakọ dị elu, a pụkwara iji ya mee ihe dị ka ihe nnọchiteanya maka ájá sitere n'okike na ngwa ngwa ciment ma ọ bụ ihe. Steel slag nwekwara ụfọdụ reactivity. A na-akụ slag ígwè n'ime ntụ ntụ ntụ ntụ (ụtụ slag ígwè). Mgbe agwakọtara ya n'ime ihe, ọ nwere ike ịkpata mmetụta pozzolanic, nke na-enyere aka ịkwalite ike nke slurry ma melite mgbanwe mgbanwe n'etiti mkpokọta ihe na slurry. ebe, si otú ahụ na-amụba ike nke ihe. Otú ọ dị, a ghaghị ịṅa ntị na nchara ígwè ahụ na-apụ n'enweghị ihe ọ bụla, calcium oxide n'ime ya, free magnesium oxide na RO oge ga-eme ka nkwụsi ike na-adịghị mma nke slag nchara, nke na-egbochi iji ígwè slag dị ka nke siri ike na. ezigbo mkpokọta. Ngwa na ngwa ngwa ciment ma ọ bụ kọmpat. Wang Yuji et al. chịkọtara dị iche iche nchara slag ọgwụgwọ Filiks na chọpụtara na ígwè slag na-emeso site na-ekpo ọkụ nri usoro nwere ezi nkwụsi ike na ike iwepụ ya mgbasa nsogbu na ciment ihe, na-ekpo ọkụ stuffy ọgwụgwọ usoro e n'ezie emejuputa atumatu na Shanghai Mba 3 Iron na ígwè osisi maka oge mbụ. Na mgbakwunye na nsogbu nke nkwụsi ike, nchara slag aggregates nwekwara àgwà nke pores siri ike, multi-angles, na obere ego nke ngwaahịa hydration n'elu. Mgbe ejiri ya dị ka mkpokọta iji kwadebe ngwa agha na kọnkịtị, ọrụ ha na-emetụtakarị. Ka ọ dị ugbu a, n'okpuru nhazi nke ijide n'aka nkwụsi ike nke olu, iji ígwè slag dị ka nchịkọta dị mma iji kwadebe ngwa agha pụrụ iche bụ ntụziaka dị mkpa maka iji ihe onwunwe nke slag ígwè. Ọmụmụ ihe ahụ chọpụtara na ịtinye onye na-ebelata mmiri, uzuzu latex, cellulose ether, onye na-emepụta ikuku na defoamer na nchara ájá ájá nwere ike imeziwanye arụmọrụ ngwakọta na ịrụ ọrụ siri ike nke ájá ájá ájá dị ka achọrọ. Onye edemede ahụ ejirila usoro nke ịgbakwunye ntụ ntụ latex na ihe mgbakwunye ndị ọzọ iji kwadebe nchara slag ájá dị elu na-arụzi ngwa agha. N'ime mmepụta na ntinye nke ngwa agha, cellulose ether bụ ihe na-emekarị kemịkalụ admixture. Ether cellulose a na-ejikarị eme ihe na ngwa agha bụ hydroxypropyl methyl cellulose ether (HPMC) na hydroxyethyl methyl cellulose ether (HEMC). )Chere. Cellulose ether nwere ike imeziwanye arụmọrụ nke ngwa agha ruo n'ókè dị ukwuu, dị ka inye ngwa agha mmiri dị mma site na ịgbara mmiri, ma ịtinye ether cellulose ga-emetụtakwa mmiri mmiri, ọdịnaya ikuku, ịtọ oge na ike nke ngwa agha. Njirimara dị iche iche.

Iji na-eduzi nke ọma mmepe na ntinye nke ígwè slag ájá ájá, na ndabere nke ọrụ nyocha gara aga na ígwè slag ájá ájá, akwụkwọ a na-eji ụdị viscosities abụọ (2000mPa).·s na 6000mPa·s) nke hydroxypropyl methyl cellulose ether (HPMC) Mee nyocha nyocha na mmetụta nke ígwè slag ájá ájá dị elu na-arụ ọrụ na-arụ ọrụ (mmiri na mmiri na-ejide mmiri) na mkpakọ na ike mgbanwe.

1. Akụkụ nnwale

1.1 Akụrụngwa

Cement: Onoda P·II 52.5 ọkwa ciment.

Ngwongwo nchara nchara: A na-edozi slag nchara nke Shanghai Baosteel site na usoro nri na-ekpo ọkụ, yana njupụta dị ukwuu nke 1910kg / m.³, nke na-ajụ ọkara, na mma modul nke 2.3.

Onye na-ebelata mmiri: polycarboxylate water reducer (PC) nke Shanghai Gaotie Chemical Co., Ltd na-emepụta, n'ụdị ntụ ntụ.

Latex ntụ ntụ: Model 5010N nyere Wacker Chemicals (China) Co., Ltd.

Defoamer: Usoro P803 ngwaahịa nke German Mingling Chemical Group nyere, ntụ ntụ, njupụta 340kg / m³, ọnụ ọgụgụ isi awọ 34% (800°C), uru pH 7.2 (20°C DIN ISO 976, 1% na DIST, mmiri).

Cellulose ether: hydroxypropyl methylcellulose ether nyere siteỤgwọ nke ụlọ ọrụ Kima Chemical Co., Ltd., nke nwere viscosity nke 2000mPa·s bụ HPMC2000, yana nke nwere viscosity nke 6000mPa.·s ka akpọrọ HPMC6000.

Ịgwakọta mmiri: mmiri mgbata.

1.2 Oke nnwale

Ngwunye ciment-aja nke nchara slag-aja a kwadebere n'oge mmalite nke ule ahụ bụ 1: 3 (oke oke), mmiri-ciment ruru 0.50 (oke oke), na usoro nke polycarboxylate superplasticizer bụ 0.25% (pasent cement mass, otu dị n'okpuru ebe a.), Ntụ ọka latex ntụ ntụ bụ 2.0%, na defoamer ọdịnaya bụ 0.08%. Maka nnwale atụnyere, usoro onunu abụọ nke cellulose ethers HPMC2000 na HPMC6000 bụ 0.15%, 0.20%, 0.25% na 0.30%, n'otu n'otu.

1.3 Usoro ule

Usoro Nnwale Mortar Fluidity: Kwadebe ngwa agha dị ka GB/T 17671-1999 si kwuo "Cement Mortar Strength Test (ISO Method)", jiri ule ule na GB/T2419-2005 "Ụzọ Nnwale Nleba nke Cement Mortar", ma kpalie wunye ezigbo ngwa agha. n'ime ule nyocha ngwa ngwa, jiri ihe mkpocha kpochapụ ngwa ngwa ahụ gafere, bulite ihe nlele ahụ kwụ ọtọ elu, na mgbe ngwa agha anaghịzi erugharị, tụọ oke dayameta nke ebe mgbasa nke ngwa agha ahụ na dayameta n'akụkụ kwụ ọtọ, na were nkezi uru, ihe ga-esi na ya pụta ziri ezi na 5mm.

A na-eme ule nke ọnụ ọgụgụ mmiri mmiri nke mmiri mmiri dị ka usoro akọwapụtara na JGJ/T 70-2009 "Ule ule maka ihe ndị bụ isi nke Ụlọ Ụlọ".

A na-eme nnwale nke ike mkpakọ na ike mgbanwe nke ngwa agha dị ka usoro akọwapụtara na GB/T 17671-1999 si dị, na afọ ule bụ ụbọchị 3, ụbọchị 7 na ụbọchị 28 n'otu n'otu.

2. Nsonaazụ na mkparịta ụka

2.1 Mmetụta nke cellulose ether na arụ ọrụ nke ígwè slag ájá ájá

Site mmetụta nke dị iche iche ọdịnaya nke cellulose ether na mmiri njigide nke ígwè slag ájá ụrọ, ọ pụrụ ịhụ na-agbakwunye HPMC2000 ma ọ bụ HPMC6000 nwere ike budata mma na mmiri njide nke freshly agwakọta ngwa agha. Site na mmụba nke ọdịnaya cellulose ether, ọnụ ọgụgụ njide mmiri nke ngwa agha mụbara nke ukwuu wee kwụsie ike. N'ime ha, mgbe ọdịnaya nke cellulose ether bụ naanị 0.15%, ọnụ ọgụgụ njide mmiri nke ngwa agha na-abawanye site na ihe fọrọ nke nta ka ọ bụrụ 10% ma e jiri ya tụnyere nke ahụ na-enweghị mgbakwunye, na-eru 96%; mgbe ọdịnaya na-abawanye ruo 0.30%, ọnụ ọgụgụ njide mmiri nke ngwa agha dị elu dị ka 98.5%. Enwere ike ịhụ na mgbakwunye nke cellulose ether nwere ike ime ka njide mmiri nke ngwa agha dịkwuo mma.

Site na mmetụta nke usoro dị iche iche nke cellulose ether na fluidity nke ígwè slag ájá ájá, a pụrụ ịhụ na mgbe usoro nke cellulose ether bụ 0.15% na 0.20%, ọ nweghị mmetụta doro anya na mmiri mmiri nke ngwa agha; mgbe usoro onunu ogwu na-abawanye na 0.25% ma ọ bụ karịa, na-enwe mmetụta dị ukwuu na mmiri mmiri, ma a ka nwere ike ịnọgide na-enwe mmiri na 260mm na n'elu; mgbe ethers abụọ cellulose dị n'otu ego ahụ, ma e jiri ya tụnyere HPMC2000, mmetụta ọjọọ nke HPMC6000 na mmiri mmiri ngwa agha doro anya.

Hydroxypropyl methyl cellulose ether bụ polymer na-abụghị ionic nke nwere ezigbo njide mmiri, na n'ime ebe dị iche iche, ka viscosity dị ukwuu, otú ahụ ka njigide mmiri dị mma na nke na-apụta ìhè karị. Ihe kpatara ya bụ na ìgwè hydroxyl na agbụ molekụla ya na oxygen atom na ether bond nwere ike ịmepụta njikọ hydrogen na ụmụ irighiri mmiri, na-eme ka mmiri efu ghọọ mmiri agbụ. Ya mere, n'otu usoro onunu ogwu, HPMC6000 nwere ike ime ka viscosity nke ngwa agha dịkwuo elu karịa HPMC2000, belata mmiri mmiri nke ngwa agha ahụ, ma mee ka ọnụ ọgụgụ mmiri na-ejide ya pụta ìhè. Akwụkwọ 10 na-akọwa ihe dị n'elu site n'ịmepụta ngwọta viscoelastic mgbe ether cellulose gbazere na mmiri, na-akọwapụta ihe ndị na-asọpụta site na nrụrụ. Enwere ike ịpụta na ụrọ slag ígwè a kwadebere n'akwụkwọ a nwere nnukwu mmiri mmiri, nke nwere ike iru 295mm na-enweghị ịgwakọta, na nrụrụ ya dị ntakịrị. Mgbe a na-agbakwunye cellulose ether, slurry ga-enweta viscous eruba, na ike ya iweghachi ọdịdị dị ntakịrị, ya mere na-eduga ná mbelata nke njem.

2.2 Mmetụta nke cellulose ether na ike nke ígwè slag ájá ụrọ

Mgbakwunye nke cellulose ether ọ bụghị nanị na-emetụta arụ ọrụ nke ígwè slag ájá ájá, ma na-emetụtakwa akụrụngwa ya.

Site na mmetụta nke dị iche iche dosages nke cellulose ether na compressive ike nke ígwè slag ájá ụrọ, a pụrụ ịhụ na mgbe agbakwunyere HPMC2000 na HPMC6000, compressive ike nke ngwa agha na onye ọ bụla onunu ogwu na-abawanye na afọ. Ịgbakwunye HPMC2000 enweghị mmetụta doro anya na ike mkpakọ nke ụbọchị 28 nke ngwa agha, na mgbanwe ike adịghị ukwuu; mgbe HPMC2000 nwere mmetụta dị ukwuu na mmalite (3-ụbọchị na 7-ụbọchị) ike, na-egosi na a na-emekarị nke doro anya mbelata, ọ bụ ezie na usoro onunu ogwu na-abawanye na 0.25% na N'elu, mmalite mkpakọ ike mụbara ubé, ma ka dị ala karịa nke na-enweghị. na-agbakwụnye. Mgbe ọdịnaya nke HPMC6000 dị ala karịa 0.20%, mmetụta dị na ụbọchị 7 na ike mkpakọ ụbọchị 28 abụghị ihe doro anya, na ike mkpakọ ụbọchị 3 na-ebelata nwayọọ nwayọọ. Mgbe ọdịnaya nke HPMC6000 mụbara ruo 0.25% na karịa, ike ụbọchị 28 mụbara ruo n'ókè ụfọdụ, wee belata; ike ụbọchị 7 belatara, wee kwụsie ike; ike nke ụbọchị 3 belatara n'ụzọ kwụsiri ike. Ya mere, ọ nwere ike na-atụle na cellulose ethers na abụọ viscosities nke HPMC2000 na HPMC6000 enweghị doro anya emebi mmetụta na 28-ụbọchị mkpakọ ike nke ngwa agha, ma mgbakwunye na nke HPMC2000 nwere a ọzọ doro anya mmetụta ọjọọ na mmalite ike nke ngwa agha.

HPMC2000 nwere ogo dị iche iche nke mmebi na ike mgbanwe nke ngwa agha, n'agbanyeghị na mmalite (ụbọchị 3 na ụbọchị 7) ma ọ bụ njedebe ikpeazụ (ụbọchị 28). Mgbakwunye nke HPMC6000 nwekwara mmetụta na-adịghị mma na ike mgbanwe nke ngwa agha, mana ogo mmetụta dị ntakịrị karịa nke HPMC2000.

Na mgbakwunye na ọrụ nke njide mmiri na ịgbatị, cellulose ether na-egbukwa oge usoro hydration nke ciment. Ọ bụ n'ihi mgbasa nke cellulose ether molecules na ngwaahịa hydration ciment, dị ka calcium silicate hydrate gel na Ca (OH) 2, iji mepụta oyi akwa mkpuchi; Ọzọkwa, viscosity nke ngwọta pore na-abawanye, na cellulose ether na-egbochi Mbugharị nke Ca2 + na SO42- na ngwọta pore na-egbu oge usoro hydration. Ya mere, ike mmalite (ụbọchị 3 na ụbọchị 7) nke ngwa agha gwakọtara na HPMC belatara.

Ịgbakwunye cellulose ether na ngwa agha ga-etolite ọnụ ọgụgụ buru ibu nke nnukwu egosipụta na dayameta nke 0.5-3mm n'ihi mmetụta ikuku nke cellulose ether, na cellulose ether akpụkpọ ahụ na-adsorbed n'elu nke ndị a egosipụta, nke na a. n'ókè ụfọdụ na-ekere òkè n'ikwado egosipụta. ọrụ, si otú ahụ na-ebelata mmetụta nke defoamer na ngwa agha. Ọ bụ ezie na ikuku ikuku a kpụrụ akpụ dị ka bọọlụ na ngwa ngwa agwakọta ọhụrụ, nke na-eme ka arụ ọrụ ahụ dịkwuo mma, ozugbo ngwa ngwa ahụ gbasiri ike ma sie ike, ọtụtụ n'ime ikuku ikuku na-anọgide na ngwa agha ahụ iji mepụta pores nke onwe ha, nke na-ebelata njupụta doro anya nke ngwa agha ahụ. . Ike mkpakọ na ike mgbanwe na-ebelata ya.

Enwere ike ịhụ na mgbe ị na-akwadebe nchara slag ájá pụrụ iche nke nwere mmiri mmiri dị elu, ọnụ ọgụgụ dị elu nke mmiri na ike dị elu, a na-atụ aro iji HPMC6000, na usoro ọgwụgwọ ekwesịghị ịbụ ihe karịrị 0.20%.

na ngwụcha

A na-enyocha mmetụta nke viscosities abụọ nke cellulose ethers (HPMC200 na HPMC6000) na njide mmiri, fluidity, compressive na flexural ike nke ígwè slag ájá ájá ka a na-enyocha site na nyocha, na usoro nke cellulose ether na ígwè slag ájá ájá e nyochara. Nkwubi okwu ndị a:

(1) N'agbanyeghị agbakwunyere HPMC2000 ma ọ bụ HPMC6000, ọnụ ọgụgụ njide mmiri nke ụrọ ájá ájá agwakọta ọhụrụ nwere ike ime ka ọ dịkwuo mma, yana ịrụ ọrụ njide mmiri ya nwere ike ime ka ọ dịkwuo mma.

(2) Mgbe usoro onunu ogwu dị ala karịa 0.20%, mmetụta nke ịgbakwunye HPMC2000 na HPMC6000 na fluidity nke ígwè slag ájá ájá abụghị ihe doro anya. Mgbe ọdịnaya na-abawanye na 0.25% na n'elu, HPMC2000 na HPMC6000 nwere ụfọdụ mmetụta ọjọọ na fluidity nke ígwè slag ájá ájá, na mmetụta ọjọọ nke HPMC6000 bụ ihe doro anya.

(3) The mgbakwunye nke HPMC2000 na HPMC6000 enweghị doro anya mmetụta na 28-ụbọchị mkpakọ ike nke ígwè slag ájá ụrọ, ma HPMC2000 nwere a ukwuu ọjọọ mmetụta na mmalite mkpakọ ike nke ngwa agha, na flexural ike bụkwa doro anya na-adịghị mma. Mgbakwunye nke HPMC6000 nwere mmetụta na-adịghị mma na ike mgbanwe nke ígwè slag-aja ngwa agha n'oge ọ bụla, mana ogo nke mmetụta dị ala karịa nke HPMC2000.