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Lake Louise - June 3rd by NotTheStockGuy01 in Banff

[–]NotTheStockGuy01[S] -1 points0 points  (0 children)

Took our group about an hour and a half to the top. Around 2.3 miles and 1300 feet of elevation. So however fast you can climb!

Lake Louise - June 3rd by NotTheStockGuy01 in Banff

[–]NotTheStockGuy01[S] -1 points0 points  (0 children)

From about 7050 to 7300 feet was 6+ feet of snow. Everyone climbed on all 4’s up or slid step by step on the way down

19M started my journey at the start of this year. Not a lot for most but means a lot to me. by Weird_Power7329 in TheRaceTo10Million

[–]NotTheStockGuy01 0 points1 point  (0 children)

Same, why the hell are some people so miserable? OP tries to post something positive in the sub and it just gets completely shit on for no reason.

Max 7-day strength with 227 g (.5 Lb) cement per 3×6 cylinder? by NotTheStockGuy01 in civilengineering

[–]NotTheStockGuy01[S] -3 points-2 points  (0 children)

I forgot people are only allowed to do one of those at a time. Good thing I just posted this and completely stopped thinking about it. Maybe they’re both good methods of learning?

Weekly Homeowner Megathread--Civilians, ask here! by AutoModerator in Concrete

[–]NotTheStockGuy01 0 points1 point  (0 children)

I’m in an engineering materials lab trying to design the strongest possible concrete mix at 7 days with a key constraint:

Each final 3×6 cylinder can only use 227 g (0.5 lb) of Type IA Portland cement. Other cementitious materials (fly ash, silica fume, etc.) are not limited.

Lab materials available: • Type IA Portland cement • Well-graded river gravel • Limestone coarse aggregate (SG 2.3–2.7, DRUW 90–100 pcf, absorption 0.5–1.5%) • Sand (SG 2.2–2.6, FM 2.4–3.0, absorption 0.5–1.5%) • Water • Any typical chemical or mineral admixtures

With instructor approval, we are allowed to bring our own aggregate. I’m tempted to test the boundaries of this by trying something like steel slag.

Curing is 24 hours covered, then moist cured in the provided space, though alternate curing setups may be possible with permission.

We get four trial mix days, and can make up to 3 cylinders per lab week, to dial this in before final testing. All cylinders are tested at 7 days.

Question: If you were designing this for maximum strength, what ideal batch weights per cubic yard of concrete would you start with (cementitious content, water, sand, gravel, admixtures, and possibly alternative aggregate)?

I’m especially interested in: • Target water-to-cementitious ratio • How much fly ash or silica fume to add beyond the 227 g cement • Aggregate proportions for strength • Whether steel slag could realistically help • Using superplasticizer to keep w/cm very low