RT-1
RT-2
RT-3
RT-5
Answer is Wrong!
Answer is Right!
The correct answer is: A. RT-1
RT-1 is a grade of tar that is specifically designed for grouting purposes. It is a bituminous material that is made from coal tar and is a good choice for grouting because it is water-resistant and has good adhesive properties.
RT-2 is a grade of tar that is used for roofing and waterproofing. It is not as water-resistant as RT-1 and does not have as good adhesive properties.
RT-3 is a grade of tar that is used for paving and road construction. It is
class="youtube-icon"> Subscribe on YouTube