What Is Concrete Trail Mix?? Why Trail Mix Required at Every Construction Site

Hello Friends,
In this video we will learn about trial mix design. why trial mix is so important, why we perform trial mix before start concrete. every thing about trial mix so please watch this video till end.
Hope you will like & learn something new from this video.

Gadget Use For Making Video.

Laptop-    https://amzn.to/31mFmyk   (Dell 5577)
Mic-          https://amzn.to/2KxJ8hz (Boya BY M1 Microphone)  
Writing Pad- https://amzn.to/2Ma40yH (Wacom One)

Personal Gadgets Use
Camera-  https://amzn.to/2M2zeaM (Nikon 7200D)
Lens-       https://amzn.to/2KiORZt    (24-70mm)
Flash-      https://amzn.to/2Ku7lFj
Tripod - https://amzn.to/2MMhQXv

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Thank you