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B) Gips toshining siqilishga mustahkamlik chegarasini aniqlash
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B) Gips toshining siqilishga mustahkamlik chegarasini aniqlash
Tajriba tartibi: ______________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Gips namunasining egilishga va siqilishga mustahkamlik chegaralari aniqlanib, gips markasi bilan uning mustahkamlik chegarasi orasidagi bog’lanish jadvali orqali uning markasi aniqlanadi. Gips markası bilan uning mustahkamlik chegarasi orasidagi bog’lanish jadvali Gips markasi 40x40x160 mm li namunalarning 2 soatdan keyingi mustahkamlik chegarasi , MPa dan kam emas Egilishga Siqilishga G-2 1,2 2 G-3 1,8 3 G-4 2 4 G-5 2,5 5 G-6 3 6 G-7 3,5 7 G-10 4,5 10 G-13 5,5 13 G-16 6 16 G-19 6,5 19 G-22 7 22 G-25 8 25 Olingan natijalar quyidagi jadvalga yozib boriladi. Gipsning siqilishdagi mustahkamlik chegarasi Ko’rsatkichlar nomi Namunalar (yarimtalik) O’rtacha qiymat 1 2 3 4 5 6 Press manometri ko’rsatkichi Metall plastinka yuzasi, sm 2 Siqilishdagi mustahkamlik chegarasi, MPa Gipsning egilishga mustahkamlik chegarasining o’rtacha arifmetik qiymati R egil = MPa Gipsning siqilishga mustahkamlik chegarasining o’rtacha arifmetik qiymati R siq = MPa Demak gips markasi G-___ bo’ladi. |
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