Alex Mrema

4 Questions 41 Answers 0 Followers

Questions related from Alex Mrema

Why not earth buildings?

Despite the sky rocketing costs of building materials many people do not seem to go for earth buildings which have added advantages of climate regulation. Why is this so?

12 December 2018 6,739 4 View

A no fines cncrete is required in a parking lot so that rain water can easily drain. Can one suggest how to improve the strength of such a concrete?

The aggregates to use are granite aggregates and we need a compressive strength that is sufficient to carry commercial vehicles.

02 February 2018 2,362 12 View

Could someone tell me the best way that I could incorporate aggregates which are silica reactive (ASR aggregates) in concrete?

I am in a site where I cannot economically obtain other suitable aggregates for making concrete.

05 May 2017 10,097 3 View

What determines the ultimate strength of concrete in a high strength concrete. Is it the strength of the mortar or the strength of the aggregates?

I designed a concrete mix of a mean strength of 60 MPa but on testing I got a maximum strength of 55 MPa after 56 days and this was after adding about 20% fly ash and a superplasicizer. The...

05 May 2015 703 14 View