Why materials specified for use in air are often unsuitable for underwater application for repair of concrete structures?

many times we find very difficult to carry out under water repair of concrete construction

04 May 2019 8,767 1 View

Pozolana is added to cement to increase early strength or reduce heat of hyderation, which is true?why?

Pozzolana is added to cement , this cement is used worldwide

04 May 2019 8,532 1 View

Most common symptom of distress in concrete structure is cracking of concrete, what is your opinion?

Distress in concrete structure may be spalling of concrete,cracking of concrete, scaling of concrete or something else?

04 May 2019 2,192 3 View

Can we use potash soap,butylstearate,petroleum waxes as a waterproofing material?suggest advanced,latest,waterproofing material available in market?

can we use potash soap,butylstearate,petroleum waxes as a waterproofing material?suggest advanced,latest,commonly used waterproofing material available in market?

04 May 2019 4,350 2 View

What is retempring of concrete?as a expert of concrete technology can we permit re-tempering of concrete?

on actual construction site some times concrete is remixed. is it re-tempering of concrete? as a expert of concrete technology can we permit re-tempering of concrete.

02 March 2018 1,320 1 View

What is exact meaning of term "tranzition zone" related with concrete?

concrete is generally considered as two phase material-paste phase and aggregate phase. concrete is complex material. what is tranzition zone?

02 March 2018 816 2 View

Why there is difference between setting time of cement and setting time of concrete?why test to find setting time of concrete on site not performed?

there is always difference between setting time of cement and setting time of concrete. for measuring setting time of cement different method is used and to measure setting time of concrete...

31 December 2017 5,957 3 View

What pressure researcher feel every day?how they overcame it?

Pressure and researchet two sides of coin

01 January 1970 8,429 3 View

Should college be free all over world?

Should college education be free all over world?

01 January 1970 6,904 4 View

What do you think is realistic task in research field?

One example is- if Someone says ,he is working 24 by 7 in research field,which is not possible

01 January 1970 3,048 1 View

Timeout error!! Processor in the loop (PIL) using STM32F4 Matlab 2018a?

Dear Researchers I am trying to perform a PIL simulation using STM32F4 Discovery board and comunication serial USB TO TTL. During simulation I receive the following timeout error: An error...

01 March 2021 2,327 1 View

Does anyone know an alternative product for cardiac Troponin T antibody for Immunofluorescence (Thermo # MA512960)?

We have been using Thermo Fisher anti-cardiac Troponin T antibody for immunofluorescence staining in FFPE mouse heart sections but it was recently discontinued. The literature shows it to be the...

01 March 2021 4,937 1 View

Tooth extraction and subsequent dental implant placement in Sprague-Dawley rats induce differential changes in anterior digastric myofibre size and ?

01 March 2021 7,254 3 View

No title

I am trying to find how to know the density needed for a pva electrospinning in a 0.6mm neddle, the electrospinning will be from top to bottom and the problem I really have is the solution because...

25 February 2021 2,615 3 View

How Can I clain a removal of a co-author?

I would like to make a correction in a co-author in your paper which is wrong. This name is also in other papers of Kenton Ko. Zey Ko is not a Co-author . The correct name is Zdenka...

24 February 2021 3,476 4 View

How does the injection volume impact LLOQ and ULOQ in regression analysis (LC-MSMS)?

Hello, I have run into an issue that has sparkled a debate at work: is the LLOQ/ULOQ impacted by injection volume under the following circumstances: 1) Same dilution factor of all samples 2)...

23 February 2021 9,159 3 View

Difficulty in debugging code to correct error - TypeError: '<' not supported ?

I am trying with a Unet code ontained from net ...in tensorflow. When trying to predict the segmentation result with the trained and saved model with metric " iou" using "CustomObjectScope"...

22 February 2021 5,254 1 View

How to perform Haldane correction on SPSS?

I was wondering if anyone knew how to perform the Haldane correction for SPSS (this is the definition of the correction -...

21 February 2021 2,882 1 View

absorption= 1-mag(S(FP1:1,FP1:1)*S(FP1:1,FP1:1))-mag(S(FP2:1,FP1:1)*S(FP2:1,FP1:1)) is it correct for absorption ?

hi everyone I am simulating a unit cell structure in HFSS using Flouquet port having two modes for absorption I have used this formula:- absorption=...

17 February 2021 9,178 2 View

How can I calculate the magnetic force applied from a magnet (no electrism)?

I would like to calculate the magnetic force on a Fe304 particle which is into a liquid solution . The magnet is above the solution , and there is no electricity. I found this formula : F = (V...

13 February 2021 4,770 3 View