کارآیی مصالح سیمانی، شامل: بتن، ملات ماسه-سیمان و دوغاب سیمان(گروت)، بر مبنای میزان نشست آزمایش اسلامپ، باید در محدوده های زیر قرار داشته باشد. بتن: ۵۰ تا ۱۵۰ میلی‌متر ملات: ۱۰۰ تا ۲۰۰ میلی‌متر دوغاب: ۲۰۰ تا ۲۷۰ میلی‌متر
کارآیی مصالح سیمانی، شامل: بتن، ملات ماسه-سیمان و دوغاب سیمان(گروت)، بر مبنای میزان نشست آزمایش اسلامپ، باید در محدوده های زیر قرار داشته باشد. بتن: ۵۰ تا ۱۵۰ میلی‌متر ملات: ۱۰۰ تا ۲۰۰ میلی‌متر دوغاب: ۲۰۰ تا ۲۷۰ میلی‌متر
As the war in Ukraine rages, the messaging app Telegram has emerged as the go-to place for unfiltered live war updates for both Ukrainian refugees and increasingly isolated Russians alike. Sebi said data, emails and other documents are being retrieved from the seized devices and detailed investigation is in progress. What distinguishes the app from competitors is its use of what's known as channels: Public or private feeds of photos and videos that can be set up by one person or an organization. The channels have become popular with on-the-ground journalists, aid workers and Ukrainian President Volodymyr Zelenskyy, who broadcasts on a Telegram channel. The channels can be followed by an unlimited number of people. Unlike Facebook, Twitter and other popular social networks, there is no advertising on Telegram and the flow of information is not driven by an algorithm. Telegram boasts 500 million users, who share information individually and in groups in relative security. But Telegram's use as a one-way broadcast channel — which followers can join but not reply to — means content from inauthentic accounts can easily reach large, captive and eager audiences. In 2018, Russia banned Telegram although it reversed the prohibition two years later.
from ua
