GraniRapid -- liquid vs. powder -- old vs. new

[Eurob]

Alright guys , I have to start this one just to reduce the confusion with the other one thread .

We know that the GraniRapid test I did a while ago -- 5 days -- did show strange things , so here are 4 new tests in 4 different configurations .

1) New liquid mixed with new powder . New means Best by 22 May 2015 , it doesn't mean it is expired or throw it out .

2) New liquid mixed with old powder

3) Old liquid mixed with new powder

4) Old liquid mixed with old powder Old means it did pass the best by date for 5 months . Storage was under good conditions with no extra manipulations . The old liquid was from a 18.9L open bucket and the old powder from an unopened full bag .

Let's see where all these will bring us .

 

[Eurob]

All the test samples were done using CBU -- the Next generation -- , Kerdi , transparent regular glass 6mm and GraniRapid .

All of the samples were done using 4 different mixes of GraniRapid , but same mix was used per individual sample for adhering the Kerdi and the glass , one after the other in sequence .

The temperature and humidity are almost 10% or less in variance from 18C and 58% humidity .

Here are some of the prep pictures .

 

[Sponsor]

 

[Eurob]

Here are the pictures of the o hour mark -- just installed samples complete.

 

[Eurob]

All right let's see how the samples are doing after 5 hours mark.

1) Old liquid & old powder batch sample .

What a disappointment , still soft with a skin over 15% cured .

 

[Eurob]

2) New liquid & old powder batch sample .

A step down beyond disappointment , still soft -- just mixed -- with a skin over 5% cured .

 

[Eurob]

3) Old liquid & new powder batch sample .

Bang , 95% cured . I will monitor the under glass mortar color change for the next 48 hours.

 

[Eurob]

4) New liquid & new powder batch sample .

Bang , 95% cured . I will monitor the under glass mortar color change for the next 48 hours.

 

[ShowerDude]

Bang!!!! your crackin me up! nice backup test, core sample thru durock? and a proper submersion test?

 

[Eurob]

SO , it seems that the liquid is not a factor in the cure degradation of past '' best before date '' products .

Both cured samples are looking alike and I think they will be ready soon for some submerged testing .

It seems that the powder -- I am worried now -- is the culprit and it does it in a way '' you don't want to find out '' .

I will monitor the uncured samples and see if they get the same results as the first one I have which is 5 days old .

 

[Eurob]

Bang!!!! your crackin me up! nice backup test, core sample thru durock? and a proper submersion test?

Yes , Sir !!!!

 

[JohnfrWhipple]

I love your lab Roberto! Very official. I would like to see more detail!!! lol

 

[Jadnashua]

From the data sheet, liquid, 2-years shelf life, powder, 1-year. http://www.mapei.com/public/US/products/Granirapid_System_EN_lr.pdf

 

[ShowerDude]

now im curious Roberto , say you make 3 samples and lay one flat on table as you have been, set one up vertical plumb like a wall mock up??? #3 a ceiling or upside down....... gravitational pull!!! lol

 

[ShowerDude]

im rockin my ignore button right now!!!

 

[Eurob]

Like

now im curious Roberto , say you make 3 samples and lay one flat on table as you have been, set one up vertical plumb like a wall mock up??? #3 a ceiling or upside down....... gravitational pull!!! lol

Hey man ! Don't push it !!!! lol

I would like to see more detail!

Did you notice that the shell life is rated at 23C and 50% relative humidity . WTF !!!

Maybe we should all live in a bubble lab at 23C and 50% RH .LOL

 

[JohnfrWhipple]

im rockin my ignore button right now!!!

Finally. How much time have you wasted this week just reading crap?

I wonder if the rapid set mortars all kick off faster than one year? This latest test of Roberto's is so interesting....

I want to come over and watch it. While drinking beer.

 

[Eurob]

I would like that , John .

Maybe I should send you the sample for test pulling called

VEGAS STYLE TEST

 

[Eurob]

Alright , some findings after the 27 hours mark .


1) Old liquid & old powder OLD stands for passed the best by date .

There was a skin formed of about 30% cure and the rest -- accessible part -- is mushy mushy mushy . Like it was just mixed ....I wouldn't even mention the under the glass area -- JUST MIXED AND STICKY --

Not something I am looking forward to see again . It is like there is a component ( or more ) which is missing from the chemical reaction which should take place . It is not possible , but who knows , maybe some components are designed to '' expire '' or encapsulate themselves , like oxidation or something similar . LOL , I sound like I know something , but really I am just stunned by it . I have to pinch me now ....let's continue .


2) New liquid & old powder

On this one the new -- not passed the best by date -- liquid helped somewhat , but not enough ... I would say a 30% improvement . The accessible area seems to be cured about 30% , the mortar is not sticky and the area at the perimeter under the glass show the same signs .

Again , nothing I am looking forward to see again .

 

[Eurob]

3) Old liquid & new powder 27 hours mark .

This one it is a done deal and is something I like to see every time I use it . 5 hours past the installation -- DONE -- .



4) New liquid & new powder 27 hours mark

This one it is a done deal and is something I like to see every time I use it . 5 hours past the installation -- DONE -- .


Later

 

[Vegas_sparky]

Pretty amazing to see how dramatic the real world difference is. You guys have always said to avoid expired product, and care for what you have. This experiment is a great example to show exactly why. Great job, Roberto.