Mapepala opangidwa ndi simenti achitoliro chachitsulo chosungunukas imagwiritsidwa ntchito makamaka popewa dzimbiri ndi kukula kwa khoma lamkati la chitoliro, kuonetsetsa kuti madzi ndi abwino, komanso kuchepetsa kutayika kwa hydraulic friction. Komabe, muyezo waukulu wa ku Europe wa EN196-1 umatchula njira yodziwira mphamvu ya simenti, yomwe ndi imodzi mwazofunikira kwambiri komanso zofunika kwambiri poyesa mawonekedwe a simenti (monga mphamvu yokakamiza ndi yopindika).
Njira yoyesera ingagawidwe m'magawo akuluakulu awa: kukonzekera, kupanga magulu, kusakaniza, kupanga, kuchiritsa, kuyesa kusweka, ndi kuwerengera zotsatira.
Njira Yoyesera 1.Masitepe Osakaniza:Onjezani madzi ndi simenti, ndipo sakanizani pa liwiro lotsika kwa masekondi 30;
Onjezani mchenga mofanana mkati mwa masekondi 30 otsatira (kuyambira ndi mtundu wovuta kwambiri), ndipo sakanizani mofulumira kwambiri kwa masekondi 30;
Imani kaye kwa masekondi 90 (chotsani matope aliwonse ochokera pa masamba ndi khoma la mphika mkati mwa masekondi 15 oyambirira);
Sakanizani mofulumira kwambiri kwa masekondi 60. Nthawi yolekerera gawo lililonse ndi ± sekondi imodzi
2. Kuumba (Tebulo Logwedezeka):
Mangani nkhungu yoyesera yopanda kanthu ndi chogwirira cha nkhungu patebulo logwedezeka;
Ikani zinthuzo m'magawo awiri, pafupifupi 300g pa thanki iliyonse mu gawo loyamba, ndipo njenjemerani nthawi 60;
Ikani gawo lachiwiri ndikulifalitsa mofanana, kenako gwedezaninso nthawi 60;
Chotsani chivundikiro cha nkhungu, pukutani matope otsala, ndipo salalani pamwamba pake.
3. Manambala:Dziwani nambala ya chitsanzo ndi malo. Zitsanzo zomwe zili mu chikombole choyesera chimodzi zimatha kukhala za mibadwo yosiyana.4.Kuyeretsa:Tsukani mphika wosakaniza, masamba, ndi njira yotulutsira madzi musanayese kapena mukamasintha simenti.
5. Kuchiritsa:Mukamaliza kulemba manambala, ikani zinyalala zoyesera m'bokosi lochiritsira (ndi kabati yopingasa ndipo pamwamba pokwapulidwa pakuyang'ana mmwamba).
Zitsanzo zoyesera zomwe zili ndi maola 24 ziyenera kuchotsedwa mu nkhungu mkati mwa mphindi 20 zisanasweke.
Zitsanzo zoyesera za maola 24 kapena kuposerapo ziyenera kuchotsedwa mu nkhungu mkati mwa maola 20-24 mutapanga (lembani nthawi).
Mukamaliza kuyeretsa, ikani m'madzi kuti muziziritse (kutalika kwa chitsanzo choyesera ≥ 5 mm, kuya kwa madzi pamwamba ≥ 5 mm).
Zitsanzo zoyesera zamtundu womwewo ziyenera kutsukidwa mu thanki lomwelo, kusunga madzi okwanira (musalowetse madzi onse m'malo mwake).
Zitsanzo zoyesera za msinkhu womwe mukufuna ziyenera kuchotsedwa mphindi 15 musanayesedwe, kutsukidwa kuchokera ku dothi, ndikuphimba ndi nsalu yonyowa.
Kukonza ndi Kupereka Malipoti ZotsatiraMphamvu Yokakamiza: Nenani za kuchuluka kwa mphamvu yokakamiza ya ma specimen asanu ndi limodzi, olondola kufika pa 0.1 MPa. Ngati zotsatira zilizonse zikusiyana ndi kuchuluka kwa mphamvu ndi zoposa ±10%, zidzatayidwa. Ngati zotsatira zosakwana zitatu zovomerezeka zatsala mutataya izi, mayesowo ayenera kubwerezedwanso.
Nthawi yotumizira: Sep-16-2025









