Ka hopena o ka hydroxyethyl cellulose ether ma ka hydration mua o ka CSA cement

Nā hopena ohydroxyethyl cellulose (HEC)a kiʻekiʻe a haʻahaʻa hoʻololi hydroxyethyl methyl cellulose (H HMEC, L HEMC) ma ke kaʻina hana hydration mua a me ka hydration huahana o sulfoaluminate (CSA) sima. Ua hōʻike ʻia nā hopena i hiki i nā mea like ʻole o L‑HEMC ke hoʻoikaika i ka hydration o CSA cement ma 45.0 min~10.0 h. ʻO nā ʻekolu cellulose ethers i hoʻopaneʻe i ka hydration o ka hoʻoheheʻe cement a me ka pae hoʻololi o CSA mua, a laila hoʻolaha i ka hydration i loko o 2.0 ~ 10.0 h. ʻO ka hoʻokomoʻana i ka hui methyl i hoʻonui i ka hopena o ka hydroxyethyl cellulose ether ma ka hydration o ka CSA cement, aʻo L HEMC ka mea hoʻoikaika ikaika loa; ʻO ka hopena o ka cellulose ether me nā mea pani a me nā degere o ka hoʻololi ʻana i nā huahana hydration i loko o 12.0 h ma mua o ka hydration he ʻokoʻa loa. He ʻoi aku ka ikaika o ka hoʻolaha ʻana o ka HEMC i nā huahana hydration ma mua o HEC. L HEMC hoʻololi ʻia ʻo CSA cement slurry e hana i ka calcium-vanadite a me ka alumini gum ma 2.0 a me 4.0 h o ka hydration.
Hua'ōlelo nui: sulfoaluminate cement; Cellulose ether; Mea pani; Degere o ka pani; Kaʻina hana wai; Huahana wai

Sulfoaluminate (CSA) cement me anhydrous calcium sulfoaluminate (C4A3) a me boheme (C2S) ma ke ʻano o ka mineral clinker nui me nā mea maikaʻi o ka paʻakikī wikiwiki a me ka ikaika mua, anti-freezing a me anti-permeability, haʻahaʻa alkalinity, a me ka hoʻohana ʻana i ka wela haʻahaʻa. kaʻina hana, me ka wili maʻalahi o ka clinker. Hoʻohana nui ia i ka hoʻoponopono wikiwiki, anti-permeability a me nā papahana ʻē aʻe. Hoʻohana nui ʻia ka cellulose ether (CE) i ka hoʻololi ʻana i ka mortar ma muli o kāna mau waiwai mālama wai a me ka mānoanoa. He paʻakikī ka CSA cement hydration reaction, he pōkole loa ka manawa induction, he multi-stage ka wikiwiki, a hiki i kona hydration ke hoʻololi i ka mana o ka admixture a me ka mālama ʻana i ka mahana. ʻO Zhang et al. Ua ʻike ʻo HEMC hiki ke hoʻolōʻihi i ka manawa induction o ka hydration o CSA cement a hana i ka piko nui o ka hoʻokuʻu ʻana i ka wela hydration. ʻO Sun Zhenping et al. Ua ʻike ʻia ua pili ka hopena hoʻoheheʻe wai o HEMC i ka hydration mua o ka slurry sima. Wu Kai et al. manaʻoʻiʻo ʻaʻole lawa ka adsorption nāwaliwali o HEMC ma ka ʻili o ka CSA cement e hoʻopilikia i ka hoʻokuʻu wela o ka hydration sima. ʻAʻole like nā hopena noiʻi e pili ana i ka hopena o ka HEMC ma ka CSA cement hydration, hiki ke kumu i nā ʻāpana like ʻole o ka clinker sima i hoʻohana ʻia. ʻO Wan et al. 'ike 'ia ka pa'a wai o HEMC i 'oi aku ka maika'i ma mua o ka hydroxyethyl cellulose (HEC), a 'o ka dynamic viscosity a me ka 'ili o ka 'ili o ka hole solution o HEMC-ho'ololi 'ia CSA sima slurry me ki'eki'e substitution degere. Li Jian et al. nānā i nā hoʻololi mua o ka wela o loko o ka HEMC-hoʻololi ʻia ʻo CSA mortars ma lalo o ka fluidity paʻa a ʻike ʻia he ʻokoʻa ka mana o HEMC me nā degere like ʻole.
Eia nō naʻe, ʻaʻole lawa ka noiʻi hoʻohālikelike e pili ana i nā hopena o CE me nā ʻokoʻa a me nā degere o ka hoʻololi ʻana i ka hydration mua o ka CSA cement. Ma kēia pepa, ua aʻo ʻia nā hopena o ka hydroxyethyl cellulose ether me nā mea like ʻole, nā hui pani a me nā degere o ka hoʻololi ʻana i ka hydration mua o ka CSA cement. ʻO ke kānāwai hoʻokuʻu wela hydration o 12h hoʻololi ʻia ʻo CSA cement me ka hydroxyethyl cellulose ether i hoʻopaʻa ʻia, a ua nānā ʻia nā huahana hydration.

1. Hoao
1.1 Mea Maka
ʻO ka sima he 42.5 papa wikiwiki paʻakikī CSA sima, ʻo ka manawa hoʻonohonoho mua a me ka manawa hope he 28 min a me 50 min, kēlā me kēia. ʻO kona ʻano kemika a me ka hui mineral (ka hapa nui, ka ʻano a me ka ratio wai-cement i ʻōlelo ʻia i loko o kēia pepa he hapa nui a i ʻole ratio mass) mea hoʻololi CE me 3 hydroxyethyl cellulose ethers me ka like viscosity: Hydroxyethyl cellulose (HEC), kiʻekiʻe o ka substitution hydroxyethyl methyl cellulose (H HEMC), haʻahaʻa degere o substitution hydroxyethyl methyl fibrin (L HEMC), ka viscosity o 32, 37, 36 Pa·s, ke degere o ka pani o 2.5, 1.9, 1.6 hui wai no ka wai deionized.
1.2 Huina ratio
ʻO ka lakio wai-cement paʻa o 0.54, ka ʻike o L HEMC (helu ʻia ka ʻike o kēia ʻatikala e ka maikaʻi o ka lepo wai) wL=0%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, HEC a me H HEMC maʻiʻo o 0.5%. Ma keia pepa: L HEMC 0.1 wL=0.1% L HEMC hoololi CSA sima, a pela aku; ʻO CSA ka CSA sima maʻemaʻe; HEC hoʻololi CSA sima, L HEMC hoʻololi i ka CSA sima, H HEMC hoʻololi CSA sima i kapa ʻia ʻo HCSA, LHCSA, HHCSA.
1.3 Ke ʻano hoʻāʻo
Ua hoʻohana ʻia kahi micrometer isothermal ʻewalu kanal me kahi ana o 600 mW no ka hoʻāʻo ʻana i ka wela o ka hydration. Ma mua o ka hoʻāʻo ʻana, ua hoʻopaʻa ʻia ka mea kani ma (20±2) ℃ a me ka haʻahaʻa pili RH= (60±5) % no 6.0~8.0 h. ʻO ka CSA cement, CE a me ka hui ʻana o ka wai i hui pū ʻia e like me ka lakene hui a ua hana ʻia ka hui ʻana o ka uila no 1min ma ka wikiwiki o 600 r / min. E kaupaona koke (10.0±0.1) g slurry i loko o ka ampoule, e hoʻokomo i ka ampoule i loko o ka mea kani a hoʻomaka i ka hoʻāʻo manawa. ʻO ka mahana o ka hydration he 20 ℃, a ua hoʻopaʻa ʻia ka ʻikepili i kēlā me kēia 1min, a mau ka hoʻāʻo a hiki i 12.0h.
Ka nānā ʻana o Thermogravimetric (TG): Ua hoʻomākaukau ʻia ka slurry cement e like me ka ISO 9597-2008 Cement - Nā hana hoʻāʻo - Hoʻoholo i ka manawa hoʻonohonoho a me ke kani. Hoʻokomo ʻia ka slurry sima i hui ʻia i loko o ka pahu hoʻāʻo o 20 mm × 20 mm × 20 mm, a ma hope o ka haʻalulu ʻana no 10 mau manawa, waiho ʻia ma lalo o (20±2) ℃ a me RH = (60±5) % no ka ho'ōla. Lawe ʻia nā laʻana i ka makahiki o t=2.0, 4.0 a me 12.0 h, kēlā me kēia. Ma hope o ka wehe ʻana i ka ʻili o ka hāpana (≥1 mm), ua ʻoki ʻia i loko o nā ʻāpana liʻiliʻi a hoʻomoʻi ʻia i ka waiʻona isopropyl. Hoʻololi ʻia ka waiʻona Isopropyl i kēlā me kēia 1d no 7 mau lā e hōʻoia i ka hoʻokuʻu piha ʻana o ka hopena hydration, a maloʻo ma 40 ℃ i ke kaumaha mau. Kauona (75±2) mg nā laʻana i loko o ka ipu hao, e wela i nā laʻana mai ka 30 ℃ a i ka 1000 ℃ ma ke ana wela o 20 ℃/min i loko o ka lewa nitrogen ma lalo o ke kūlana adiabatic. ʻO ka decomposition thermal o nā huahana hydration hydration CSA ka mea maʻamau ma 50 ~ 550 ℃, a hiki ke loaʻa ka ʻike o ka wai i hoʻopaʻa ʻia ma ka helu ʻana i ka nui o ka pohō o nā laʻana i loko o kēia pae. Ua nalowale ʻo AFt he 20 wai aniani a ua nalowale ʻo AH3 i 3 mau wai aniani i ka wā o ka hoʻoheheʻe wela ma 50-180 ℃. Hiki ke helu ʻia nā ʻike o kēlā me kēia huahana hydration e like me ka TG curve.

2. Nā hopena a me ke kūkākūkā
2.1 ʻIkepili o ke kaʻina hana hydration
2.1.1 Ka hopena o ka ʻike CE ma ke kaʻina hydration
E like me ka hydration a me exothermic curves o like 'ole maʻiʻo L HEMC hoʻololi CSA sima slurry, aia 4 exothermic peaks ma ka hydration a me exothermic curves o maemae CSA slurry slurry (wL=0%). Hiki ke hoʻokaʻawale ʻia ke kaʻina hana hydration i ka pae dissolution (0 ~ 15.0min), ka pae hoʻololi (15.0 ~ 45.0min) a me ka pae wikiwiki (45.0min) ~ 54.0min), ka pae deceleration (54.0min ~ 2.0h), ka pae equilibrium ikaika ( 2.0 ~ 4.0h), reacceleration pae (4.0 ~ 5.0h), redeceleration pae (5.0 ~ 10.0h) a stabilization pae (10.0h~). I loko o 15.0min ma mua o ka hydration, ua hoʻoheheʻe koke ʻia ka mineral sima, a ʻo ka mua a me ka lua o ka hydration exothermic peaks i kēia pae a me 15.0-45.0 min pili i ka hoʻokumu ʻana o ka pae metastable AFt a me kona hoʻololi ʻana i ka monosulfide calcium aluminate hydrate (AFm), kēlā me kēia. Ua hoʻohana ʻia ke kolu o ka puʻu exothermal ma 54.0min o ka hydration e puʻunaue i ka hydration acceleration a me ka deceleration pae, a ua lawe nā helu o ka hanauna o AFt a me AH3 i kēia ma ke ʻano he inflection point, mai ka boom a i ka emi ʻana, a laila komo i ka pae equilibrium dynamic mau 2.0 h. . I ka 4.0h ka hydration, ua komo hou ka hydration i ke kahua o ka wikiwiki, ʻo C4A3 kahi hoʻoheheʻe wikiwiki a me ka hana ʻana o nā huahana hydration, a ma 5.0h, ʻike ʻia kahi kiʻekiʻe o ka hydration exothermic wela, a laila komo hou i ke kahua o ka deceleration. Hoʻopaʻa ʻia ka hydration ma hope o 10.0h.
ʻO ka mana o L HEMC maʻiʻo ma ka CSA cement hydration dissolutiona ʻokoʻa ka pae hoʻololi: i ka haʻahaʻa ʻana o L HEMC maʻiʻo, L HEMC hoʻololi ʻia ʻo CSA cement paste i ka lua o ka hydration heat release peak i ʻike iki ʻia ma mua, ʻoi aku ka kiʻekiʻe o ka helu hoʻokuʻu wela a me ka waiwai hoʻokuʻu wela kiʻekiʻe ma mua o ka CSA cement paste; Me ka mahuahua o ka L HEMC maʻiʻo, ka wela hoʻokuʻu 'ana o L HEMC hoʻololi CSA slurry slurry lohi iki, a emi iho maʻemaʻe CSA sima slurry. ʻO ka helu o nā peaks exothermic i loko o ka hydration exothermic curve o L HEMC 0.1 ua like ia me ka CSA maʻemaʻe paʻi sima, akā ʻo ka 3rd a me ka 4th hydration exothermic peaks i holomua i 42.0min a me 2.3h, kēlā me kēia, a hoʻohālikelike ʻia me 33.5 a me 9.0 mW/g o ka CSA maʻemaʻe paʻi sima, hoʻonui ʻia ko lākou mau piko exothermic i 36.9 a me 10.5 mW/g. Hōʻike kēia i ka 0.1% L HEMC e wikiwiki a hoʻonui i ka hydration o L HEMC i hoʻololi ʻia CSA cement i ka pae kūpono. A ʻo L HEMC maʻiʻo he 0.2% ~ 0.5%, L HEMC hoʻololi ʻia ʻo CSA cement acceleration a me ka deceleration pae i hui mālie ʻia, ʻo ia hoʻi, ʻo ka ʻehā o ka piko exothermic ma mua a hui pū ʻia me ke kolu o ka piko exothermic, ʻaʻole ʻike hou ʻia ka waena o ka pae kaulike. , L HEMC ma ka CSA cement hydration paipai 'ana i oi aku ka nui.
L HEMC nui paipai i ka hydration o CSA sima ma 45.0 min~10.0 h. I ka 45.0min ~ 5.0h, 0.1% L HEMC he liʻiliʻi ka hopena i ka hydration o CSA cement, akā ke piʻi ka ʻike o L HEMC i 0.2% ~ 0.5%, ʻaʻole nui ka hopena. He ʻokoʻa loa kēia mai ka hopena o CE ma ka hydration o Portland cement. Ua hōʻike ʻia nā haʻawina moʻokalaleo e loaʻa ana ka CE i kahi nui o nā pūʻulu hydroxyl i loko o ka mole e hoʻopili ʻia ma luna o ka ʻili o nā ʻāpana sima a me nā huahana hydration ma muli o ka launa pū ʻana o ka waikawa-base, pēlā e hoʻopaneʻe ai i ka hydration mua o Portland cement, a ʻoi aku ka ikaika o ka adsorption. ʻoi aku ka maopopo o ka lohi. Eia nō naʻe, ua ʻike ʻia i loko o ka puke palapala ʻoi aku ka nāwaliwali o ka hiki ke hoʻopili ʻia o CE ma ka ʻili AFt ma mua o ka mea ma luna o ka calcium silicate hydrate (C‑S‑H) gel, Ca (OH) 2 a me ka calcium aluminate hydrate surface, ʻoiai ka hiki o ka adsorption o ʻOi aku ka nāwaliwali o ka HEMC ma nā ʻāpana sima CSA ma mua o nā ʻāpana sima Portland. Eia kekahi, hiki i ka oxygen atom ma ka mole CE ke hoʻoponopono i ka wai manuahi ma ke ʻano o ka paʻa hydrogen e like me ka wai adsorbed, hoʻololi i ke ʻano o ka wai evaporable i ka slurry sima, a laila pili i ka hydration cement. Eia nō naʻe, e hoʻonāwaliwali mālie ka adsorption nāwaliwali a me ka wai o ka CE me ka hoʻonui ʻana i ka manawa hydration. Ma hope o kekahi manawa, e hoʻokuʻu ʻia ka wai adsorbed a hana hou me nā ʻāpana sima unhydrated. Eia kekahi, hiki i ka hopena o ka CE ke hāʻawi i kahi lōʻihi no nā huahana hydration. ʻO kēia paha ke kumu e hoʻolaha ai ʻo L HEMC i ka hydration cement CSA ma hope o 45.0 min hydration.
2.1.2 Ka hopena o ka CE substituent a me kona degere ma ke kaʻina hydration
Hiki ke ʻike ʻia mai ka hydration heat release curves o ʻekolu CE i hoʻololi ʻia CSA slurries. Ke hoʻohālikelike ʻia me L HEMC, ʻo ka hydration heat release rate curves o HEC a me H HEMC hoʻololi ʻia ʻo CSA slurries he ʻehā puʻupuʻu hoʻokuʻu wela hydration. Ua hoʻopaneʻe nā hopena a pau o nā CE a pau i ka hoʻoheheʻe ʻana a me ka hoʻololi ʻana o ka CSA cement hydration, a ʻo HEC a me H HEMC i ʻoi aku ka ikaika o nā hopena lohi, e hoʻopaneʻe i ka puka ʻana o ka pae hydration wikiwiki. ʻO ka hoʻohui ʻana o HEC a me H‑HEMC ua hoʻopaneʻe iki i ka 3rd hydration exothermic peak, hoʻonui nui i ka 4th hydration exothermic peak, a hoʻonui i ka piko o ka 4th hydration exothermic peak. I ka hopena, ʻoi aku ka nui o ka hoʻokuʻu ʻana i ka wela hydration o nā slurries CSA ʻekolu i hoʻololi ʻia ma mua o nā slurries CSA maʻemaʻe i ka wā hydration o 2.0 ~ 10.0 h, e hōʻike ana i ka hoʻolaha ʻana o nā CE ʻekolu i ka hydration o CSA cement i kēia pae. I ka hydration manawa o 2.0 ~ 5.0 h, i ka hydration wela hoʻokuʻu o L HEMC hoʻololi CSA sima ka nui loa, a me H HEMC a me HEC ka lua, e hoike ana i ka paipai 'ana o ka haʻahaʻa substitution HEMC ma ka hydration o CSA sima ka ikaika. . ʻOi aku ka ikaika o ka hopena catalytic o HEMC ma mua o ka HEC, e hōʻike ana i ka hoʻokomo ʻana o ka hui methyl i hoʻonui i ka hopena catalytic o CE ma ka hydration o CSA cement. ʻO ka hoʻolālā kemika o CE he mana nui i kāna adsorption ma ka ʻili o nā ʻāpana sima, ʻoi aku ka nui o ka hoʻololi ʻana a me ke ʻano o ka mea pani.
ʻOkoʻa ka steric hindrance o CE me nā mea hoʻololi like ʻole. He hydroxyethyl wale nō ka HEC ma ke kaulahao ʻaoʻao, ʻoi aku ka liʻiliʻi ma mua o HEMC me ka hui methyl. No laila, HEC i ka ikaika adsorption hopena ma CSA sima particles a me ka nui loa ka hopena ma ka hoʻopili 'ana ma waena o ka sima particles a me ka wai, no laila, i ka loa maopopo lohi hopena ma ke kolu hydration exothermic peak. ʻOi aku ka ikaika o ka wai o HEMC me ka hoʻololi kiʻekiʻe ma mua o ka HEMC me ka hoʻololi haʻahaʻa. ʻO ka hopena, ua hoʻemi ʻia ka wai manuahi e pili ana i ka hopena hydration ma waena o nā hale flocculated, he hopena nui i ka hydration mua o ka cement CSA i hoʻololi ʻia. Ma muli o kēia, ua lohi ke kolu o ka piko hydrothermal. Loaʻa nā HEMC hoʻololi haʻahaʻa i ka wai hoʻoheheʻe wai a me ka manawa hana pōkole, ka hopena i ka hoʻokuʻu mua ʻana o ka wai adsorbent a me ka hydration hou o ka nui o nā ʻāpana cement unhydrated. Loaʻa nā hopena lohi like ʻole o ka adsorption nāwaliwali a me ka absorption wai i ka hydration dissolution a me ka hoʻololi ʻana o ka CSA cement, ka hopena i ka ʻokoʻa o ka hoʻolaha ʻana i ka hydration cement i ka pae hope o CE.
2.2 Ka nānā ʻana i nā huahana hydration
2.2.1 Ka hopena o ka ʻike CE ma nā huahana hydration
E hoʻololi i ka pihi TG DTG o ka slurry wai CSA e nā mea like ʻole o L HEMC; Ua helu ʻia nā mea o loko o ka wai ww a me nā huahana hydration AFt a me AH3 wAFt a me wAH3 e like me nā pihi TG. Ua hōʻike ʻia nā hopena i helu ʻia e hōʻike ana nā pihi DTG o ka paʻi sima CSA maʻemaʻe i ʻekolu mau piko ma 50 ~ 180 ℃, 230 ~ 300 ℃ a me 642 ~ 975 ℃. E pili ana i ka AFt, AH3 a me ka decomposition dolomite. Ma ka hydration 2.0 h, ʻokoʻa nā pihi TG o L HEMC i hoʻololi ʻia CSA slurry. Ke piʻi ka hydration i ka 12.0 h, ʻaʻohe ʻokoʻa koʻikoʻi i nā pihi. Ma ka hydration 2.0h, ʻo ka maʻiʻo wai hoʻopaʻa kemika o wL = 0%, 0.1%, 0.5% L HEMC i hoʻololi ʻia ʻo CSA cement paste he 14.9%, 16.2%, 17.0%, a me AFt maʻiʻo he 32.8%, 35.2%, 36.7%, pakahi. ʻO ka maʻiʻo o AH3 he 3.1%, 3.5% a me 3.7%, e hōʻike ana i ka hoʻohui ʻana o L HEMC i hoʻomaikaʻi i ka degere hydration o ka slurry hydration sima no 2.0 h, a hoʻonui i ka hana ʻana o nā huahana hydration AFt a me AH3, ʻo ia hoʻi, hāpai ʻia. ka hydration o ka CSA cement. Aia paha kēia no ka HEMC i loko o ka hui hydrophobic methyl a me ka hydrophilic pūʻulu hydroxyethyl, nona ka hana kiʻekiʻe o ka ʻili a hiki ke hoʻemi nui i ka ʻili o ka pae wai i ka slurry sima. I ka manawa like, loaʻa iā ia ka hopena o ka entraining ea e maʻalahi i ka hana ʻana o nā huahana hydration cement. Ma 12.0 h o ka hydration, AFt a me AH3 i loko o L HEMC hoʻololi CSA slurry slurry a maemae CSA slurry slurry i ole nui okoa.
2.2.2 Ka hopena o nā mea pani CE a me kā lākou mau degere o ka hoʻololi ʻana i nā huahana hydration
ʻO ka TG DTG curve o CSA cement slurry i hoʻololi ʻia e ʻekolu CE (ʻo ka ʻike o CE he 0.5%); ʻO nā hualoaʻa helu e like me ww, wAFt a me wAH3 penei: ma ka hydration 2.0 a me 4.0 h, ʻokoʻa loa nā pihi TG o nā slurries sima like ʻole. Ke hiki aku ka hydration i ka 12.0 h, ʻaʻohe ʻokoʻa nui nā pihi TG o nā slurries sima like ʻole. Ma 2.0 h hydration, ka chemically nakinaki wai maʻiʻo o maʻemaʻe CSA sima slurry a me HEC, L HEMC, H HEMC hoololi CSA slurry slurry mea 14.9%, 15.2%, 17.0%, 14.1%, pakahi. Ma ka 4.0 h o ka hydration, ua emi ka liʻiliʻi loa o ka TG curve o ka CSA cement slurry. ʻOi aku ka nui o ka hydration degere o nā slurries CSA i hoʻololi ʻia ʻekolu CE ma mua o nā slurries CSA maʻemaʻe, a ʻoi aku ka ʻike o ka wai i hoʻopaʻa ʻia i ka wai o HEMC i hoʻololi ʻia CSA slurries ma mua o ka HEC i hoʻololi ʻia CSA slurries. L HEMC hoʻololi ʻia ʻo CSA cement slurry chemical binding water content ka mea nui loa. I ka hopena, ʻo CE me nā ʻokoʻa like ʻole a me nā degere o ka hoʻololi ʻana he ʻokoʻa koʻikoʻi i nā huahana hydration mua o CSA cement, a ʻo L‑HEMC ka hopena hoʻolaha nui loa i ka hoʻokumu ʻana i nā huahana hydration. Ma ka 12.0 h hydration, ʻaʻohe ʻokoʻa nui ma waena o ka nui o ka pohō nui o nā slurps cement CSA i hoʻololi ʻia ʻekolu CE a me nā slurps sima CSA maʻemaʻe, i kūlike me nā hopena hoʻokuʻu wela, e hōʻike ana i ka hopena o CE i ka hydration o ka wai. CSA sima i loko o 12.0 h.
Hiki ke ʻike ʻia ʻo AFt a me AH3 ʻano ikaika kiʻekiʻe o L HEMC i hoʻololi ʻia CSA slurry ka mea nui loa i ka hydration 2.0 a me 4.0 h. AFt maʻiʻo o ka maʻemaʻe CSA slurry a me HEC, L HEMC, H HEMC hoʻololi CSA slurry he 32.8%, 33.3%, 36.7% a me 31.0%, ma ka 2.0h hydration. ʻO ka maʻiʻo AH3 he 3.1%, 3.0%, 3.6% a me 2.7%. Ma ka 4.0 h o ka hydration, AFt maʻiʻo he 34.9%, 37.1%, 41.5% a me 39.4%, a me AH3 maʻiʻo he 3.3%, 3.5%, 4.1% a me 3.6%, kēlā me kēia. Hiki ke ʻike ʻia ʻo L HEMC ka hopena hoʻoikaika ikaika loa i ka hoʻokumu ʻana i nā huahana hydration o CSA cement, a ʻoi aku ka ikaika o ka hopena o HEMC ma mua o ka HEC. Hoʻohālikelike ʻia me L‑HEMC, ua hoʻomaikaʻi nui ʻo H‑HEMC i ka viscosity dynamic o ka solution pore, no laila e hoʻopilikia ai i ka lawe ʻana i ka wai, ka hopena i ka emi ʻana o ka slurry penetration rate, a pili i ka huahana hydration product i kēia manawa. Ke hoʻohālikelike ʻia me nā HEMC, ʻoi aku ka ʻike o ka hopena hoʻopaʻa hydrogen i loko o nā molekala HEC, a ʻoi aku ka ikaika o ka hopena o ka hoʻoheheʻe wai. I kēia manawa, ʻaʻole ʻike hou ʻia ka hopena hoʻoheheʻe wai o nā HEMC kiʻekiʻe a me nā HEMC haʻahaʻa haʻahaʻa. Eia kekahi, hana ʻo CE i kahi "loulou paʻa" o ka lawe ʻana i ka wai i loko o ka micro-zone i loko o ka slurry sima, a hiki i ka wai i hoʻokuʻu mālie ʻia e CE ke hiki ke hana pololei me nā ʻāpana sima a puni. Ma ka 12.0 h o ka hydration, ʻaʻole koʻikoʻi nā hopena o CE ma AFt a me AH3 o ka CSA cement slurry.

3. Ka hopena
(1) Hiki ke hoʻonui ʻia ka hydration o ka sulfoaluminate (CSA) sludge i 45.0 min ~ 10.0 h me nā ʻano like ʻole o ka hydroxyethyl methyl fibrin haʻahaʻa (L HEMC).
(2) Hydroxyethyl cellulose (HEC), hydroxyethyl methyl cellulose (H HEMC), L HEMC HEMC, kēia mau hydroxyethyl cellulose ether (CE) ua hoʻopaneʻe i ka dissolution a me ka hoʻololi ʻana o ka CSA cement hydration, a hāpai i ka hydration o 2.0 ~ 10.0 h.
(3) Hiki i ka hoʻokomo ʻana o ka methyl i loko o ka hydroxyethyl CE ke hoʻoikaika nui i kona hopena hoʻolaha ma ka hydration o ka cement CSA ma 2.0 ~ 5.0 h, a ʻoi aku ka ikaika o ka hopena hoʻolaha o L HEMC ma ka hydration o CSA cement ma mua o H HEMC.
(4) Ke 0.5% ka helu o ka CE, ʻo ka nui o AFt a me AH3 i hana ʻia e L HEMC i hoʻololi ʻia CSA slurry ma hydration 2.0 a me 4.0 h ka mea kiʻekiʻe loa, a ʻo ka hopena o ka hoʻolaha ʻana i ka hydration ka mea nui loa; H HEMC a me HEC hoʻololi CSA slurries i kiʻekiʻe AFt a me AH3 slurries maʻemaʻe CSA slurries wale nō ma 4.0 h o ka hydration. Ma ka 12.0 h o ka hydration, ʻaʻole nui nā hopena o 3 CE ma nā huahana hydration o CSA cement.