Sugar in Concrete - Strength Results

Sugar in Concrete - Strength Results - Vlog 487

Рет қаралды 19,306

Күн бұрын

Пікірлер: 54

@CogitoBcn 3 жыл бұрын

If no mistake in my calculations, in metric system the right amount of sugar-1 it should be about 1.6 kg per cubic meter. And the threshold sugar-2 about 5kg per cubic meter.

@edwardbrowns8436 2 жыл бұрын

50 lbs bag sugar kills 10 yards concrete in emergency situation. Had to do it when engine blew up going to job site.

@Tigersfan829 9 ай бұрын

But if the engine blew up how could you run the drum to mix it in

@Guy4UnderDog 4 жыл бұрын

Since sugar had such a profound impact on slump, it seems incomplete to not do experiments with constant slump. Use the same water:sugar ratio, but reduce the liquid.

@IIIBETEPIII 9 ай бұрын

For full experiment you had to reduce the amount of water on 3 and 4, just because you can. Maybe because it was too liquid, it separated the cement from sand.

@alexmcdonald7294 3 жыл бұрын

Thanks Dr John, that was fascinating. I’m a civil structural engineer and we’re always spec’ing fancy concrete but I heard about putting dish washing liquid detergent into the mix. A few old builders have mentioned it variously as a backyard plasticiser/water reducer/air entraining… thing. I did a couple of experiments with pavers in my garage. It seems to “work” with no obvious degradation of strength. What might be the complications with long term durability with the leftover byproducts and reo corrosion? What do you think would be an optimal addition to a garden path type mix. Could be a good experiment video? Cheers, Alex.

@petersamuel1884 2 жыл бұрын

Would be interesting to see results in a concrete overlay mix too.

@markbogen8970 Жыл бұрын

Just came across your comment, I might be wrong but putting dish soap in would probably raise air content way too high. High air concrete is weak that is why its typically around 6 percent maximum

@cois 2 жыл бұрын

Thanks for the awesome info! Can you perhaps translate that to a percentage for us? How much sugar would you then suggest we use?

@IntelligentConcrete 2 жыл бұрын

I would start with 1% addition of cementitious by weight.

@rongray4118 Жыл бұрын

MY question is this. Knowing this information to fairly accurate. I should pre-dose the water to be added to a volumetric mixer so that the water/sugar ratio is as close to 1 cubic yard as I am able. I hope that I can get this correct. We need to install footings and a pad on top of a mountain where no cement delivery is even capable of delivering. I will do a couple test pads and see what results we can achieve. I do not think we are going to need this in a winter setting of 45 degrees Fahrenheit though.

@IntelligentConcrete Жыл бұрын

Check out Hydration Stabilizers from Chryso or BASF. The sugar might be enough or tough to control for this type of job.

@rongray4118 Жыл бұрын

@@IntelligentConcrete I will do that! Thank you. Your response comes a month later - Merry Christmas and Blessings to each in Your Family!

@1HighVoltage1 5 жыл бұрын

Could you please address the difference between a hydration stabilizer and a set retarder? Is their relation like HRWR and Super Plasticizers?

@ridwanaffandi4874 3 жыл бұрын

Hi,sir.iwanna make burbell n dumbell from concerte.What is the best ratio u suggest?

@IntelligentConcrete 3 жыл бұрын

Go buy some premixed concrete from the local hardware store. Less expensive and easier to make.

@prabhaths5513 4 жыл бұрын

Pls advise how to make a supper plasticisers to reduce water in concrete

@IntelligentConcrete 4 жыл бұрын

There are some great papers out there in the inter web on water reduced manufacturing. Google scholar has a bunch of places to start.

@umemmuouchenna6943 4 жыл бұрын

I'm new here and I want to ask weather does sugar increase the strength of concrete and how?

@IntelligentConcrete 4 жыл бұрын

It can do both depending on how much you use and the original chemistry of your binding matrix. By putting small quantities, the early concrete strength development might be delayed but due to a great length of time for dissolution of the parent materials, you should see a greater strength and lower permeability of the mix.

@umemmuouchenna6943 4 жыл бұрын

So how can one know the amount of sugar one can use for a particular concrete size

@IntelligentConcrete 4 жыл бұрын

Start with small batches to identify the correct dosage to use to get your required strengths and then scale up to larger batches with an scaled amount of sugar for the batch size. Verify your results and correct dosage for strengths needed before scaling up through each batch size.

@umemmuouchenna6943 4 жыл бұрын

Pls could you do the video of that measurement for us

@MrRockrobstr 3 жыл бұрын

So (cue Mary Poppins) a spoon full of sugar makes the ready mix go down😉

@SpaceCrete 5 жыл бұрын

Jon, thanks for sharing this interesting test. I did not understand the temperature graph explanation. What I see is that S1 and S2 went up dramatically in the first two minutes. This is surprising to me. Do you know why this happens with sugar? Thank you!

@1HighVoltage1 5 жыл бұрын

I believe it is S2 and S3 which go up, S1 is the one nearly flat. Although, the colors are hard to differentiate, I've got it mixed up as well the first time I looked at it. Nevertheless, I'm not the expert, but I want to make an educated guess about the temp graphs: I think in S2 and S3 there is so much sugar that the temp spike you see is actually the temp rise during initial mixing. Even though, mixing is already done for several hours, there was initially no reaction at all. This is, to my opinion, the very first sign of life of that batch. And as the results show, it's really screwed up 🙈

@SpaceCrete 5 жыл бұрын

@@1HighVoltage1 Thanks. Yes I am not the best at colors - but still very interested in the mechanism behind these initial spikes.

@1HighVoltage1 5 жыл бұрын

@@walibou287 Could you please explain why? S2 and S3 are both really f*cked up, while S1 is still quite ok, so it makes more sense that the two identical graphs match S2 and S3. For reference: S2 and S3 are in the same order of magnitude regarding sugar content, while S1 is an order of magnitude lower. I'm not saying your experience is plain wrong, I just like to discuss it and understand the mechanisms behind it.

@1HighVoltage1 5 жыл бұрын

@@walibou287 That makes three of us who'd like to know what's going on with the spike in curves 2 and 3 ;-) My guess is still that it's the first (mixing stage) reaction the mix shows. This initial stage, as Jon explains, is not visible for the other curves (ref and S1), although expected, but probably occurred before temp registration started.

@noahtacbas3760 4 жыл бұрын

Did you put gravel in it sir? Hopefully you answer quickly, your answer would us in our research, Thankyou in advance sir.

@IntelligentConcrete 4 жыл бұрын

No. We used a sanded grout.

@rickblythe4864 3 жыл бұрын

Can you add cement to a Chirt Drive way to strengthen it?

@IntelligentConcrete 3 жыл бұрын

Can you send me some photos of the chert? Normally yes, but only short term. Chert reacts negatively with concrete and will start falling apart before too long unless heavily designed with SCMs or other tech.

@rickblythe4864 3 жыл бұрын

Yes, I can send pics shortly. Chert is a mineral that we use in the South for driveways. It contains a lot of natural lime. @@IntelligentConcrete

@IntelligentConcrete 3 жыл бұрын

@@rickblythe4864 I am very familiar with chert. Excited to see the photos.

@matthewtheking Жыл бұрын

So, in conclusion put a smidge of sugar in the mix if you're a sadomasochistic individual trying to design, mix, pour, slreed, and finish a large 4 person job as 1 person crew. Got it. 📝📜

@jameschupp2230 3 жыл бұрын

So Does Sugar Ultimately make your Concrete Stonger???!!!

@IntelligentConcrete 3 жыл бұрын

Yes but when sugar has helped my mixes get stronger it was a purposeful design and not randomly throwing it into the truck.

@jameschupp2230 3 жыл бұрын

@@IntelligentConcrete So on a 4000 psi with 624 pounds of cement per yard, if I multiplied 624 x .001 = .6 lb. of sugar per yard, would that be a satisfactory amount to add to the mix?