Kuyesera kwa matope a 3D ndi hydroxypypyl methylcelulose

1.1zida zogwiritsira ntchito

Mitsempha imatengera P · 22.5 simenti (PC) yopangidwa ndi simenti Orotian Stemer Oble, ufa Woyera wa 95%, 0.05%, 0.10%, 0.20%, 0.30%, motsatana; Wolemba bwino ndi quartz mchenga wokhala ndi tinthu tating'onoting'ono 0,212 ~ 0.425 mm.

1.2Njira Yoyeserera

1.2.1Kukonzekera Zinthu

Pogwiritsa ntchito matope ophatikizika a JJJ-5, ofuna kusakaniza HPMC, simenti ndi mchenga komanso kusakaniza madzi 3 min (mphindi 2 ku liwiro lalitali)

1.2.2Kuwunika kwa Pulogalamu Yosindikiza

Kusindikiza kwa matope kumadziwika ndi kutukwana komanso kutokha.

Kutulutsa kwabwino ndi njira yopezera kusindikiza kwa 3D, ndipo matope amafunikira kuti akhale osalala ndipo osatsekereza chitoliro chomwe chikuyenda. Zofunikira. Pofotokoza za GB / T 2419-2005 "Matope amtundu wa simenti", madzimadzi amtowo omwe adasiyidwa ndi 0, 20, 40, ndi 60 min adayesedwa ndi mayeso a tebulo.

Kututa kwabwino ndikofunikira kuti mukwaniritse kusindikiza 3D. Akufunika kuti kusanjidwa kosindikizidwa sikugwa kapena kusokonekera kwambiri pansi pa kulemera kwake komanso kukakamizidwa kwa chapamwamba. Mawonekedwe osungika komanso kukana kulowa pansi pa kulemera kwake kungagwiritsidwe ntchito kuti azindikire bwino matope osindikizira 3D.

Kuchuluka kwa kuchuluka kwake pansi pa kulemera kwake kumawonetsa kuchuluka kwa kuwonongeka kwa zomwe zili ndi kulemera kwake, komwe kumatha kugwiritsidwa ntchito kuwunika zida za 3D. Kukweza mawonekedwe osunga mawonekedwe, ang'onoang'ono kuwonongeka kwa matope pansi pa kulemera kwake, komwe kumathandizira kusindikiza. Kutanthauzira, ikani matope mu cylindrical nkhungu yokhala ndi mainchesi ndi kutalika kwa 100 mm, Ram ndi kunjenjemera Njira yomwe ili pamwambapa idagwiritsidwa ntchito kuyesa kuchuluka kwa matope atayimirira 0, 20, 40, ndi 60 mphindi motero.

Kusungidwa kwa matope 3D kumagwirizana mwachindunji ndi mawonekedwe ndikuwumitsa zinthuzo, momwemonso njira yolimbana ndi zinthu zolimba kapena njira zomangira zomwe zimakhazikitsidwa. Fotokozerani JGJ 70 - 2009 "Njira yoyesera yopangira matope omanga" kuyesa kupendekera kwa matope.

Kuphatikiza apo, chosindikizira cha gantry chimagwiritsidwa ntchito popanga mafinya amodzi a cube imodzi yokhala ndi gawo la 200 mm, ndipo magawo oyamba osindikizira monga m'mphepete mwa nthambi, ndipo m'lifupi mwake m'mphepete mwa nyanjayo adayesedwa. Kusindikiza kwa makulidwe ndi 8 mm, ndipo kuthamanga koyenda ndi 1 500 mm / min.

1.2.3Kuyesa kwa Rheogical

Parameter ya rheological ndi njira yofunika kwambiri yodziwitsa kuwonongeka kwa slurry, yomwe itha kugwiritsidwa ntchito kulosera kakhalidwe katatu ka 3D. Mavalidwe owoneka bwino akuwonetsa mikangano yamkati pakati pa tinthu tating'onoting'ono ndikuwunika kukana kwa slurry kuti musunthe. Kutha kwa HPMC kuwonetsa zotsatira za hpmc pa expridiodima matope 3D. Refer to the mixing ratio in Table 2 to prepare cement paste P-H0, P-H0.10, P-H0.20, P-H0.30, Use a Brookfield DVNEXT viscometer with an adapter to test its rheological properties. Kutentha kwa chilengedwe kwa (20 ± 2) ° C. Otsekemera oyera amachepetsa 10 s ali pa 60.0 s-1 kuti apangitse pang'ono kufalikira, kenako ndikupuma kwa 10 s, kenako ndikuchepetsa mpaka 0.1 s-1.

Mtundu wa Bingham womwe wawonetsedwa mu EQ. .

τ = τ0 + μΓ (1).

komwe kupsinjika kumeta; Nthawi imodzi ndi zopsinjika zokolola; μ ndi ma vipukiti. Γ ndiye mtengo wamanyazi.

Zinthu zamimenti zikakhala mu State State, maviccrencle yopumira μ imatha kuvuta kwa colloidal dongosolo la Colloidal dongosolo, limatanthawuza kupsinjika kocheperako komwe kumafunikira kuti musunthe. Zinthu zomwe zimangoyenda zimangoyenda bwino kwambiri poyerekeza ndi nthawi yayitali, zimachitika, kotero zitha kugwiritsidwa ntchito kuwonetsa chiwopsezo cha HPMC pa matope a 3D.

1.2.4Makina Olimbitsa Makina

Kunena za GB / T 17691-1999 "Zojambulazo za matope a simenti", zonena za matope ndi zomwe zili mu HPMC zidakonzedwa molingana ndi chiwerengero chawo chopondera mu tebulo 2, ndipo mphamvu zawo zopsinjika ndi kutheratu zidayesedwa.

Palibe muyeso woyenera wa njira yoyeserera yaukadaulo pakati pa matope a 3D. Mu phunziroli, njira yogawanika idagwiritsidwa ntchito poyesa. Matangongole osindikizira 3 adachiritsidwa 28 D, kenako ndikudula m'magawo atatu, dzina lake a, c motero. , monga tikuonera Chithunzi 2 (a). Makina a CMT-4204 padziko lonse lapansi (Quol 20 Kin, Offict Center 1, Kutsegula Voteni 0.08 mm / min) idagwiritsidwa ntchito kunyamula gawo la magawo atatuwo kuti lithetse kulephera, monga tikuonera Chithunzi 2 (b).

Boma la Interlaminar Mphamvu PB ya fanizoli imawerengedwa malinga ndi njira zotsatirazi:

PB = 2FMA = 0.637 fa (2)

komwe f ndiyo kulephera kwa fanizo; Gawo lagawidwe kazinthu.

1.2.5Micromoron

Ma microscoropic morphology a zoyerekeza pa 3 D adawonedwa ndi ma microscope a elekiti a elekitopu (Semu) kuchokera ku Fei Company, USA.