1. Okuqukethwe yisihloko kanye nobubanzi bokusetshenziswa kwaso
Le ndlela ichaza imishini kanye nezinyathelo zokusebenza zokunquma ukugeleza kodaka lwesimende.
Le ndlela iyasebenza ekunqumeni ukugeleza kodaka lomlotha wentaba-mlilo i-Portland cement, i-composite Portland cement, i-Portland cement ejwayelekile exutshwe nomlotha wentaba-mlilo, i-slag cement yasePortland kanye nezinye izinhlobo ze-cement ezibekelwe ukusebenzisa le ndlela.
2. Izindinganiso zokubhekisela
Indlela yokuhlola amandla kadaka lukasimende lwe-GB177
Isihlabathi esijwayelekile se-GB178 sokuhlolwa kwamandla esimende
Isampula ejwayelekile ye-JBW 01-1-1 yokugeleza kodaka lwesimende
3. Indlela yokuthola izinga lokunciphisa amanzi kodaka yilena elandelayo:
3.1 Izinsimbi kanye nemishini
A. Umxube wodaka;
B. Itafula lokugxuma (kumelwe kwengezwe ipuleti lengilazi eliwugqinsi oluyi-5mm);
C. Ibha yokugoqa eyisilinda: yenziwe ngezinto zensimbi, ububanzi obungu-20mm, ubude obungaba ngu-185mm;
D. isikhunta esiyindilinga sekhoni esinqunyiwe kanye nesembozo sesikhunta: usayizi wesikhunta esiyindilinga sekhoni esinqunyiwe, ukuphakama kungu-60±0.5mm, ububanzi obuphezulu bungu-φ 70±0.5mm, ububanzi obuphansi bungu-100±0.5mm, isembozo sesikhunta kumele sihambisane nesikhunta esiyindilinga sekhoni esinqunyiwe, isikhunta sekhoni esinqunyiwe kanye nesembozo sesikhunta esenziwe ngezinto zensimbi;
E. Umbusi (ibanga lokulinganisa elingu-300mm) noma ama-caliper anobubanzi bokulinganisa obungu-300mm;
F. i-spatula.
G. Ibhalansi yemithi (enesisindo esingu-1000g, ukuzwela okungu-1g).
3.2. Inqubo yokuhlola
3.2.1 Kala ukusetshenziswa kwamanzi kodaka olubhekiselwe kulo
A. Kala u-300g wesamente kanye nesihlabathi esijwayelekile esingu-750g bese uzithela ebhodweni lokuxuba, qala umshini wokuxuba, engeza amanzi kancane ngemva kokuxuba imizuzu emi-5, bese uwafaka zingakapheli imizuzu engama-30. Yeka ukuxuba imizuzu emi-3 ngemva kokuqala umshini. Khuhla udoti emaceleni bese ususa ipani lokuxuba.
B. Ekuxubeni udaka ngesikhathi esifanayo, ngendwangu emanzi sula itafula letafula le-jump, induku ye-ramming, usike isikhunta esiyindilinga bese umboza udonga lwangaphakathi, bese uzifaka phakathi kwepuleti lengilazi, zimbozwe ngendwangu emanzi.
C. Udaka oluhlanganisiwe luhlukaniswa ngokushesha lube yizingqimba ezimbili zibe yisikhunta, ungqimba lokuqala lufakwa ku-cone mold cishe izingxenye ezimbili kwezintathu ukuphakama, kanye ne-ramming bar kusukela emaphethelweni kuya enkabeni efakwe ngokulinganayo i-ramming izikhathi eziyishumi nanhlanu, bese kulayishwa ungqimba lwesibili lodaka, olufakwe cishe ngamasentimitha amabili ukuphakama kune-mold eyindilinga, induku efanayo eyi-cylindrical i-ramming izikhathi eziyishumi nanhlanu. Uma ulayisha isihlabathi kanye ne-ramming, cindezela i-truncate cone die ngesandla ukuze ugweme ukunyakaza.
D. Ngemva kokuyicindezela, susa isembozo sesikhunta, sebenzisa i-spatula ukuze ukhuhle udoti ophakeme kunesikhunta esiyindilinga sekhoni esinqunyiwe bese usisula kahle, bese uphakamisa ngobumnene isikhunta esiyindilinga siqonde phezulu. Xoxa ngezandla nge-crank yesondo ukuze wenze itafula lokugxuma ligxume izikhathi ezingamashumi amathathu ngesivinini esisodwa ngomzuzwana.
E. Ngemva kokushaya, sebenzisa ama-caliper ukukala ububanzi bokusatshalaliswa kwesisekelo se-mortar, bese uthatha isilinganiso senani lamadayamitha amabili aqonde komunye nomunye njengokusabalala kwe-mortar lapho amanzi esetshenziswa, okuvezwa ku-mm. Uma ukusabalala kwe-mortar kungama-140±5mm, ukusetshenziswa kwamanzi ukusetshenziswa kwamanzi kokusabalala kwe-mortar.
3.2.2 Ngokwendlela ka-3.2.1, ukusetshenziswa kwamanzi kodaka olune-ejenti yokunciphisa amanzi kufinyelele ku-140±5mm.
3.3. Izinga lokunciphisa amanzi kodaka olulungisiwe libalwa kanje:
Izinga lokunciphisa amanzi e-mortar (%) = (W0-W1)/ W0 ×100
Lapho, w0 — ukusetshenziswa kwamanzi (g) lapho ukusabalala kodaka olubhekisela kungama-140±5mm;
W1 — Ukusetshenziswa kwamanzi (g) lapho ukusabalala kodaka olune-ejenti yokunciphisa amanzi kungu-140±5mm.
Inani lesilinganiso sokunciphisa amanzi liyinani eliphakathi lezibalo lamasampula amathathu.
Isikhathi sokuthunyelwe: Ephreli-25-2024