What is the purpose of evaluation methods of materials and assemblies in historic bulidings?

SCC and Plain Concrete What is slag and why do we use it

SCC and Plain Concrete What is superplasticizer and why do we use it?

Kindly give me both answers How does the excessive presence of silt harm the strength of concrete? Is the fine aggregate suitable for making concrete?

Concrete Compressive Strength test Discussion: After concreting is completed, your project manager raises concern about the quality of theconcrete cast in the slab and instructs you to test the cylinder samples taken during the castingprocess in 7 days. What would be the acceptable 7 day compressive strengths of your samplesto give confidence to your manager that the 28 day target strength will be met?

How does a synthetic liner around a prestressed concrete tank affect the maximum failure load

1) What is the recommendations of Density, Absorption and Voids in Hardened Concrete lab test?  2) What is the errors that might happen on this lab test and how to prevent it?  Recommendations for at least 4 industrial applications with details provided.  do it academically and Do not copy, write it as a points

Can you explain the steps in Rapid Method of Concrete Mix Design? Thank you.

What is the recommendations of Bulk density of concrete lab test? What is the errors that might happen on this lab test and how to prevent it?  Recommendations for at least 4 industrial applications with details provided.

Self-healing concrete.  Explain why that strategy and how it can help in the product development process    please provide clear explanation