Shafi Ullah

6 Questions 40 Answers 0 Followers

Questions related from Shafi Ullah

How to Determine the Diffusion Coefficient, D28, of Concrete?

In order to design mix proportions for an extremely durable concrete with an expected service life of 300 years, the diffusion coefficient of concrete at 28 days (D28) is to be determined. What...

11 November 2018 8,700 7 View

How to compare ACI Codes with Eurocodes for Concrete structures?

I am working on the differences in requirements of American Concrete Institute (ACI) Codes ACI-318 and the European code Eurocode 2 for concrete structures. Could any one share the differences in...

10 October 2016 2,562 0 View

What is the best and cutting edge software, nowadays, for tunnel design the World over?

Hey Researchers, I want to purchase a tunnel design software for a design firm. Could anyone suggest me a state-of-the-art software for this purpose?

09 September 2016 8,992 15 View

How to compare the Single-Shell method of tunnel construction (NMT) with the Double-Shell one (NATM) ?

There are two principal methods of tunnel construction: the single-shell known as the Norwegian Method of Tunneling (NMT) and the double-shell referred to as the New Austrian Tunneling Method...

09 September 2016 6,121 6 View

How to design a durable concrete mix for a useful life of 300 years?

Hi, it is an essential requirement of IAEA that the near surface facility for the disposal of low leevel radioactive waste shall have a useful design life of 300 years.

05 May 2016 3,449 16 View

Which one of the Euro Codes is applicable to the concrete technology.? Does it contain all the requirements / specifications for concrete ingredients?

Which one of the Euro Codes is applicable to the concrete technology.? Does it contain all the requirements / specifications for concrete ingredients such as water, cement, fine aggregate, coarse...

05 May 2016 2,938 3 View