Comments on: Why do We Test Concrete Compressive Strength after 28 Days?

By: Ashok Kumar Sharma

Ashok Kumar Sharma — Sat, 20 Feb 2016 16:11:46 +0000

Because in 28 Day concrete gain 100% Strength as per grade

By: Ashok Kumar Sharma

Ashok Kumar Sharma — Sat, 20 Feb 2016 16:08:34 +0000

No need to demolish so many ways like injecting chemical in concrete and jacketing are the ways to given sttrngth. Gp2 Is the well known chemical..

By: Jonathan Imperial Miano

Jonathan Imperial Miano — Thu, 28 Jan 2016 07:09:48 +0000

There are construction practices that the foundation is being poured directly into the earth. For your plot with high level of salty water, you may provide a lean concrete min of 4" before your foundation . Making sure also that your concrete cover for reinforcements is being observed with proper concrete spacer. Insufficient concrete cover can affect the bar reinforcement on the "salty" environment. Controls during concrete pouring must be observed since actual scenario – it is being neglected

By: Samiullah Stanekzai

Samiullah Stanekzai — Sun, 26 Oct 2014 07:44:57 +0000

sir thanks for your information but percentage you are given it have any reference or any recommendation by ASTM standard

By: Deep Kukreti

Deep Kukreti — Fri, 24 Oct 2014 09:44:13 +0000

Do these tabulated data belong to any references or any recommendations by codes?

By: Abdulkhaliq Akakhil

Abdulkhaliq Akakhil — Mon, 08 Sep 2014 05:46:08 +0000

right

By: Taylor Jr Farley

Taylor Jr Farley — Sun, 24 Aug 2014 10:11:20 +0000

I really appreciate this information, I will like to have more

By: Ahmad Sukri Norhan

Ahmad Sukri Norhan — Fri, 22 Aug 2014 04:34:18 +0000

how about for non load bearing material that use some cement e.g wood wool cement board. Do we need to wait until day 28 for test? TQ