1. Abubuwan da ake buƙata da kuma iyakokin aikace-aikacen
Wannan hanyar tana ƙayyade kayan aiki da matakan aiki don tantance ruwan turmi na siminti.
Wannan hanyar ta shafi tantance yawan turmi na tokar dutsen mai aman wuta da aka yi da simintin Portland, simintin Portland da aka haɗa, simintin Portland na yau da kullun da aka haɗa da tokar dutsen mai aman wuta, simintin Portland da sauran nau'ikan siminti da aka tsara don amfani da wannan hanyar.
2. Ma'aunin tunani
Hanyar gwajin ƙarfin turmi na siminti GB177
GB178 Yashi na yau da kullun don gwajin ƙarfin siminti
JBW 01-1-1 Misalin da aka saba amfani da shi don ruwan turmi na siminti
3. Hanyar gano yawan rage ruwa na turmi kamar haka:
3.1 Kayan aiki da kayan aiki
A. Injin haɗa turmi;
B. Teburin tsalle (dole ne a ƙara farantin gilashi mai kauri mm 5);
C. Sanda mai siffar silinda: an yi shi da ƙarfe, diamita 20mm, tsawonsa kusan 185mm;
D. murfin mazugi mai siffar ...
E. Ruler (zagayen aunawa 300mm) ko calipers masu kewayon aunawa 300mm;
F. spatula.
G. Daidaiton magani (mai nauyin 1000g, jin nauyin 1g).
3.2. Tsarin gwaji
3.2.1 Auna yawan ruwan turmi da ake amfani da shi wajen amfani da shi
A. A auna siminti gram 300 da yashi mai nauyin gram 750 sannan a zuba su a cikin tukunyar hadawa, a kunna mahaɗin, a zuba ruwa a hankali bayan an gauraya na tsawon mintuna 5, sannan a zuba su cikin mintuna 30. A daina juyawa na tsawon mintuna 3 bayan an kunna injin. A goge turmi daga ruwan wukake sannan a cire kaskon juyawa.
B. A cikin haɗa turmi a lokaci guda, da rigar zane, goge teburin tsalle, sandar ramming, yanke mazugi zagaye da mold rufe bangon ciki, sannan a sanya su a tsakiyar farantin gilashin, an rufe su da rigar.
C. Ana raba turmi da aka haɗa cikin sauri zuwa layuka biyu a cikin mold ɗin, ana sanya Layer na farko a kan mold ɗin mazugi kusan tsayin kashi biyu bisa uku, tare da sandar ramming daga gefen zuwa tsakiya a daidaita sau goma sha biyar, sannan a ɗora Layer na biyu na turmi, wanda aka sanya shi sama da santimita biyu fiye da mold ɗin zagaye, sandar cylindrical iri ɗaya tana ramping sau goma sha biyar. Lokacin da ake loda yashi da ramming, danna mazugi mai yankewa da hannu don guje wa motsi.
D. Bayan an yi tapping, a cire murfin mold ɗin, a yi amfani da spatula don goge turmi wanda ya fi girman mazugi mai zagaye da aka yanke sannan a goge shi, sannan a ɗaga mazugi mai zagaye a hankali a tsaye sama. A girgiza hannuwa da mazugi na tayoyin don sa teburin tsalle ya yi tsalle sau talatin a cikin sauri ɗaya a kowace daƙiƙa.
E. Bayan an buge, yi amfani da ma'aunin auna diamita na ƙasan turmi, kuma ɗauki matsakaicin ƙimar diamita biyu a tsaye a matsayin yaduwar turmi lokacin da ake amfani da ruwan, wanda aka bayyana a cikin mm. Lokacin da yaduwar turmi ta nuna 140±5mm, yawan amfani da ruwa shine yawan amfani da ruwa na yaduwar turmi ta tunani.
3.2.2 A bisa ga hanyar 3.2.1, yawan ruwan turmi tare da maganin rage ruwa ya kai 140±5mm.
3.3. Ana ƙididdige ƙimar rage ruwa na turmi da aka yi wa magani kamar haka:
Rage yawan ruwan turmi (%) = (W0-W1)/ W0 × 100
Inda, w0 - yawan amfani da ruwa (g) lokacin da yaduwar turmi mai ma'ana shine 140±5mm;
W1 — Yawan amfani da ruwa (g) lokacin da yaduwar turmi tare da maganin rage ruwa ya kai 140±5mm.
Darajar ƙimar rage ruwa ita ce matsakaicin ƙimar lissafi na samfura uku.
Lokacin Saƙo: Afrilu-25-2024