Nkọwa:A mụrụ mmetụta nke ọdịnaya dị iche iche nke hydroxypropyl methylcellulose ether na njirimara nke ngwa agha agwakọta akọrọ akọrọ. Nsonaazụ gosiri na: na mmụba nke ọdịnaya nke cellulose ether, nkwụsi ike na njupụta na-ebelata, na oge nhazi na-ebelata. Mgbatị ahụ, ike mkpakọ 7d na 28d belatara, mana arụ ọrụ niile nke ngwa agha agwakọtara akpọnwụla ka emelitere.
0. Okwu mmalite
N'afọ 2007, ministri isii na kọmitii nke mba ahụ nyere "Notice on Prohibiting On- Site Mixing of Mortar in Some Cities in a Time Limit". Ka ọ dị ugbu a, obodo 127 n'ofe mba ahụ arụwo ọrụ nke "machibidoro ngwa agha dị ugbu a", nke wetara mmepe na-enweghị atụ na mmepe nke ngwa agha akọrọ. ohere. Na ike mmepe nke akọrọ-agwakọta ngwa agha na anụ ụlọ na mba ọzọ na-ewu ahịa, dị iche iche akọrọ-agwakọta ngwa agha admixtures nwekwara banyere nke a na-apụta ụlọ ọrụ, ma ụfọdụ ngwa agha admixture mmepụta na ahịa ụlọ ọrụ na-ama ụma ikwubiga okwu ókè na irè nke ngwaahịa ha, na-eduhie ndị akọrọ- ngwakọta ngwa agha ụlọ ọrụ. mmepe ahụike na n'usoro. Ka ọ dị ugbu a, dị ka ihe mgbakwụnye kọnkịtị, a na-ejikarị ngwakọta ngwa ngwa agwakọta akpọnwụ akpọnwụ, ma ole na ole ka a na-eji naanị ya. Karịsịa, e nwere ọtụtụ ụdị admixtures na ụfọdụ ọtọ akọrọ-agwakọta ngwa agha, ma Na ndị nkịtị akọrọ-mixed ngwa agha, ọ dịghị mkpa na-achụso ọnụ ọgụgụ nke admixtures, ma ọzọ anya kwesịrị ugwo ya practicability na operability, ka zere iji ngwa ngwa na-emebiga ihe ókè, na-eme ka mkpofu na-adịghị mkpa, na ọbụna na-emetụta àgwà nke ọrụ ahụ. N'ime ngwa agha agwakọta akpọnwụ nkịtị, cellulose ether na-arụ ọrụ nke njide mmiri, ịgbatị, na nkwalite arụmọrụ ihe owuwu. Ịrụ ọrụ njide dị mma na-eme ka mmiri na-ekpo ọkụ na-ekpo ọkụ agaghị eme ka ájá, ntụ ntụ na mbelata ike n'ihi ụkọ mmiri na hydration ciment ezughị ezu; mmetụta na-akpụ akpụ na-eme ka ike nhazi nke ngwa agha mmiri ahụ dịkwuo elu. Akwụkwọ a na-eduzi ọmụmụ ihe n'usoro na ntinye nke cellulose ether na ngwa agha akọrọ akọrọ, nke nwere ihe na-eduzi maka otu esi eji admixtures mee ihe n'ụzọ ziri ezi na ngwa ngwa akọrọ akọrọ.
1. Ngwa ngwa na ụzọ eji eme ule
1.1 Ngwa ngwa maka ule
Simenti bụ P. 042.5 simenti, ash ijiji bụ Klas II ash sitere na ụlọ ọrụ ike dị na Taiyuan, nchịkọta dị mma bụ ájá osimiri a mịrị amị nke nwere nha 5 mm ma ọ bụ karịa sieved, modul nke ịdị mma bụ 2.6, na ether cellulose bụ. hydroxypropyl methyl cellulose ether dị n'ahịa (viscosity 12000 MPa·s).
1.2 Usoro ule
A na-eme nkwadebe ihe nlele na nyocha arụmọrụ dịka JCJ/T 70-2009 si dị na usoro nyocha nke isi ihe eji arụ ụlọ.
2. Nyochaa atụmatụ
2.1 Usoro maka ule
N'ime ule a, a na-eji ọnụ ọgụgụ nke akụrụngwa ọ bụla nke 1 ton nke plasta agwakọta akọrọ dị ka usoro bụ isi maka ule ahụ, na mmiri bụ oriri mmiri nke 1 ton nke ngwa ngwa agwakọta akọrọ.
2.2 Atụmatụ akọwapụtara
N'iji usoro a, ọnụọgụ hydroxypropyl methylcellulose ether agbakwunyere na tọn nke ọ bụla nke akwa akwa akwa akwa akọrọ bụ: 0.0 kg/t, 0.1 kg/t, 0.2 kg/t, 0.3 kg/t, 0.4 kg/tt, 0.6 kg/ t, na-amụ mmetụta nke dị iche iche dosages nke hydroxypropyl methylcellulose ether na mmiri njide, agbanwe agbanwe, pụtara njupụta, mwube oge, na compressive ike nke nkịtị akọrọ-agwakọta plastering ngwa agha, iji na-eduzi akọrọ-agwakọta plastering The ziri ezi ojiji nke ngwa agha. admixtures nwere ike n'ezie ghọta uru nke mfe akọrọ-agwakọta ngwa agha mmepụta usoro, adaba ewu, gburugburu ebe obibi nchebe na ike ịzọpụta.
3. Nnwale ule na nyocha
3.1 Nsonaazụ ule
Mmetụta nke usoro onunu dị iche iche nke hydroxypropyl methylcellulose ether na njide mmiri, nkwụsi ike, njupụta pụtara ìhè, ịtọ oge, na ike mkpakọ nke ụrọ plasta agwakọta agwakọta.
3.2 Nyochaa nsonaazụ
Enwere ike ịhụ ya site na mmetụta nke usoro ọgwụgwọ dị iche iche nke hydroxypropyl methylcellulose ether na njide mmiri, nkwụsi ike, njupụta pụtara ìhè, ịtọ oge, na ike mkpakọ nke ụrọ akwa akwa agwakọta akọrọ. Site na mmụba nke cellulose ether ọdịnaya, ọnụ ọgụgụ njide mmiri nke mmiri mmiri na-eji nwayọọ nwayọọ na-abawanye, site na 86.2% mgbe hydroxypropyl methyl cellulose adịghị agwakọta, ruo 0.6% mgbe agwakọta hydroxypropyl methyl cellulose. Ọnụ ọgụgụ njide mmiri ruru 96.3%, nke gosipụtara na mmetụta njide mmiri nke propyl methyl cellulose ether dị ezigbo mma; ịdịgidesi ike nke nta nke nta na-ebelata n'okpuru mmetụta njide mmiri nke propyl methyl cellulose ether (mmiri oriri kwa ton nke ngwa agha na-agbanwe agbanwe n'oge nnwale); Njupụta nke pụtara ìhè na-egosi ọnọdụ dị ala, na-egosi na mmetụta njide mmiri nke propyl methyl cellulose ether na-abawanye ụda mmiri mmiri ma na-ebelata njupụta; oge mwube nke nta nke nta na-abawanye na mmụba nke ọdịnaya nke hydroxypropyl methyl cellulose ether, na ọdịnaya nke Mgbe ọ ruru 0.4%, ọ gaferịrị uru akọwapụtara nke 8h chọrọ site na ọkọlọtọ, na-egosi na iji hydroxypropyl methylcellulose ether kwesịrị ekwesị nwere. mmetụta na-achịkwa nke ọma na oge ọrụ nke ngwa agha mmiri; ike mkpakọ nke 7d na 28d ebelatala (Ka usoro onunu buru ibu, ka a na-edobe anya karịa). Nke a metụtara mmụba nke ụda ngwa agha na mbelata nke njupụta pụtara ìhè. Mgbakwunye nke hydroxypropyl methyl cellulose ether nwere ike ịmepụta oghere mechiri emechi n'ime ngwa ngwa siri ike n'oge nhazi na ike nke ngwa agha ahụ. Micropores na-akwalite ịdịte aka nke ngwa agha.
4. Akpachara anya maka ngwa nke cellulose ether na nkịtị akọrọ-agwakọta ngwa agha
1) Nhọrọ nke cellulose ether ngwaahịa. N'ikwu okwu n'ozuzu, ka viscosity nke cellulose ether ka ukwuu, ka mma njigide mmiri ya, ma elu viscosity, na-ebelata solubility ya, nke na-emebi ike na ịrụ ọrụ nke ngwa agha; ịdị mma nke cellulose ether dị ntakịrị na ngwa ngwa agwakọta akọrọ. A na-ekwu na ọ bụrụ na ọ dị mma, ọ na-adịrị ya mfe ịgbari. N'okpuru otu usoro onunu ogwu, nke ka mma nke ọma, ka mma na-ejide mmiri.
2) Nhọrọ nke cellulose ether onunu ogwu. Site na nsonaazụ ule na nyocha nke mmetụta nke ọdịnaya nke cellulose ether na arụmọrụ nke akọrọ-agwakọta plastering ngwa agha, a pụrụ ịhụ na elu ọdịnaya nke cellulose ether, mma, ọ ga-e ga-atụle si mmepụta ihe na-eri. ngwaahịa àgwà, ewu arụmọrụ na anọ akụkụ nke ewu gburugburu ebe obibi ka comprehensively họrọ kwesịrị ekwesị onunu ogwu. Usoro onunu ogwu nke hydroxypropyl methyl cellulose ether na ngwa ngwa agwakọta akọrọ bụ ọkacha mma 0.1 kg/t-0.3 kg/t, na mmetụta njide mmiri enweghị ike izute ọkọlọtọ achọrọ ma ọ bụrụ na agbakwunyere hydroxypropyl methyl cellulose ether na obere ego. Ihe ọghọm dị mma; usoro onunu ogwu nke hydroxypropyl methyl cellulose ether na ngwa agha plasta pụrụ iche na-eguzogide mgbape bụ ihe dịka 3 kg / t.
3) Ngwa nke cellulose ether na nkịtị akọrọ-agwakọta ngwa agha. Na usoro nke na-akwadebe nkịtị akọrọ-agwakọta ngwa agha, ihe kwesịrị ekwesị ego nke admixture nwere ike tinye, ọkacha mma na a ụfọdụ mmiri njigide na ndim mmetụta, nke mere na ọ nwere ike na-etolite a mejupụtara superposition mmetụta na cellulose ether, belata mmepụta ego, na-azọpụta ego. ; ma ọ bụrụ na ejiri ya naanị Maka cellulose ether, ike nke njikọ enweghị ike imezu ihe ndị a chọrọ, a pụkwara itinye ego kwesịrị ekwesị nke uzuzu latex redispersible; n'ihi obere ego nke ngwa ngwa admixture, njehie nha dị ukwuu mgbe ejiri ya naanị ya. Ogo nke ngwaahịa ngwa agha agwakọta akọrọ.
5. Mkpebi na aro
1) N'ime ngwa agha akọrọ akọrọ-agwakọta, yana mmụba nke ọdịnaya nke hydroxypropyl methylcellulose ether, ọnụ ọgụgụ njigide mmiri nwere ike iru 96.3%, nkwụsi ike na njupụta na-ebelata, na oge nhazi oge na-agbatị. Ike mkpakọ nke 28d belatara, mana n'ozuzu arụmọrụ nke ngwa agha agwakọtara akọrọ ka emelitere mgbe ọdịnaya nke hydroxypropyl methyl cellulose ether dị oke oke.
2) Na usoro nke na-akwadebe nkịtị akọrọ-agwakọta ngwa agha, cellulose ether na kwesịrị ekwesị viscosity na fineness kwesịrị ịhọrọ, na ya onunu ogwu kwesịrị kpebisiri ike site na nnwale. N'ihi obere mkpirisi ngwa ngwa, njehie nha dị ukwuu mgbe ejiri ya naanị ya. A na-atụ aro ka ị gwakọta ya na onye na-ebu ya na mbụ, wee mụbaa ọnụ ọgụgụ nke mgbakwunye iji hụ na àgwà nke ngwaahịa ngwa ngwa agwakọta akọrọ.
3) ngwa agha agwakọta akọrọ bụ ụlọ ọrụ na-apụta na China. Na usoro nke iji ngwa agha admixtures, anyị agaghị kpuru ìsì na-achụso ibu, ma na-elebakwu anya na àgwà na ibelata mmepụta ego, na-agba ume ojiji nke ulo oru mkpofu residues, na n'ezie nweta ike ịzọpụta na oriri Mbelata.
Oge nzipu: Feb-22-2023