To’G’ri gеоmеtrik shаklli nаmunаning o’rtаchа zichligini аniqlаsh umumiy malumotlar
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B) Sementning siqilishdagi mustahkamlik chegarasini aniqlash Tajriba tartibi: ___________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Sement namunasining egilishga va siqilishga mustahkamlik chegaralari aniqlanib, gips markasi bilan uning mustahkamlik chegarasi orasidagi bog’lanish jadvali orqali uning markasi aniqlanadi. Sement markası bilan uning mustahkamlik chegarasi orasidagi bog’lanish jadvali Mustahkamlik chegarasi Sement markalari 300 400 500 600 28 kun dan keyin egilishdagi mustahkamlik chegarasi, MPa dan ko’p 45 55 60 65 28 kundan keyin siqilishdagi mustahkamlik chegarasi, MPa dan ko’p 300 400 500 600 Olingan natijalar quyidagi jadvalga yozib boriladi. Sementning siqilishdagi mustahkamlik chegarasi Sementning turi __________________ Sinash muddatlari, kun Yarimtali namunalarning siqilishdagi mustahkamlik chegarasi, Mpa Sementning siqilishdagi mustahkamlik chegarasi, Mpa 1 2 3 4 5 6 Markasi Sementning egilishga mustahkamlik chegarasining o’rtacha arifmetik qiymati R egil = MPa Sementning siqilishga mustahkamlik chegarasining o’rtacha arifmetik qiymati R siq = MPa Demak sement markasi M-___ bo’ladi. |
