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MechEngDropout
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Joined: 27 Jun 2003
Posts: 10474
Location: Off the grid
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 Posted: 09/25/05 - 00:55 Post subject: Memo to McDonalds
Dear manager of Burbank/Lee location:
We have received 7.5 inches of rain in the past two days. It is not necessary to use the sprinklers this evening. Please stop.
Kindest regards,
the guy that is pissed off at everything
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Floridaboiler
POTFH
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Joined: 18 May 2002
Posts: 11322
Location: Jacksonville, Florida
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Posted: 09/25/05 - 06:51 Post subject:
That kind of thing happens around here all the time. Businesses and people have their sprinklers on timers but they don't have a moisture sensor installed also that will over ride the timer if the sensor detects that the ground is to wet.
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marathonrnr262
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Posted: 09/25/05 - 08:35 Post subject: Re: Memo to McDonalds
| MechEngDropout wrote: | Dear manager of Burbank/Lee location:
We have received 7.5 inches of rain in the past two days. It is not necessary to use the sprinklers this evening. Please stop. Additionally, the sidewalk does not need hydration, the cement has already set
Kindest regards,
the guy that is pissed off at everything |
Sheldon
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Ms. Jenn
Fresh, Hot & Wild
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Joined: 14 Feb 2004
Posts: 7935
Location: Suite 550
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Posted: 09/25/05 - 10:21 Post subject: Re: Memo to McDonalds
| marathonrnr262 wrote: | Additionally, the sidewalk does not need hydration, the cement has already set
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Sheldon[/quote]
WRONG, WRONG WRONG!
Complete hydration is rare in the field due to a lack of moisture and the long period of time (sometimes decades) required to achieve complete hydration. Just because the concrete is hard does not mean it has completely hydrated. Concrete is designed to reach desired strength within 30 days of being set, even though it has NOT hydrated thoroughly.
Additionally, if concrete is resaturated after a drying period, hydration will resume and strength will again increase. Outdoor exposures often continue to provide moisture through ground contact and rainfall. Indoor concretes often dry out after curing and do not continue to gain strength.
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marathonrnr262
Member
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Posted: 09/25/05 - 10:53 Post subject: Re: Memo to McDonalds
| Ms. Jenn wrote: |
WRONG, WRONG WRONG!
Complete hydration is rare in the field due to a lack of moisture and the long period of time (sometimes decades) required to achieve complete hydration. Just because the concrete is hard does not mean it has completely hydrated. Concrete is designed to reach desired strength within 30 days of being set, even though it has NOT hydrated thoroughly.
Additionally, if concrete is resaturated after a drying period, hydration will resume and strength will again increase. Outdoor exposures often continue to provide moisture through ground contact and rainfall. Indoor concretes often dry out after curing and do not continue to gain strength. |
Ratten, fratten , mlatten, kratten..... rabbit.
However, the sidewalk is then perfect for running on if it has not hydrated and completely hardened. Better for the knees ya know.
Sheldon.
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Ms. Jenn
Fresh, Hot & Wild
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Joined: 14 Feb 2004
Posts: 7935
Location: Suite 550
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Posted: 09/25/05 - 14:34 Post subject: Re: Memo to McDonalds
| marathonrnr262 wrote: | | Ms. Jenn wrote: |
WRONG, WRONG WRONG!
Complete hydration is rare in the field due to a lack of moisture and the long period of time (sometimes decades) required to achieve complete hydration. Just because the concrete is hard does not mean it has completely hydrated. Concrete is designed to reach desired strength within 30 days of being set, even though it has NOT hydrated thoroughly.
Additionally, if concrete is resaturated after a drying period, hydration will resume and strength will again increase. Outdoor exposures often continue to provide moisture through ground contact and rainfall. Indoor concretes often dry out after curing and do not continue to gain strength. |
Ratten, fratten , mlatten, kratten..... rabbit.
However, the sidewalk is then perfect for running on if it has not hydrated and completely hardened. Better for the knees ya know.
Sheldon. |
It's even harder on the knees when it's hard, wet and slippery (from the sprinklers) and you fall  
You should have known better than to say something about concrete! You knew I'd catch it and give you more than you ever cared to know about concrete!
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MechEngDropout
Member
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Joined: 27 Jun 2003
Posts: 10474
Location: Off the grid
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Posted: 09/25/05 - 14:54 Post subject: Re: Memo to McDonalds
| Ms. Jenn wrote: |
It's even harder on the knees when it's hard, wet and slippery (from the sprinklers) and you fall
You should have known better than to say something about concrete! You knew I'd catch it and give you more than you ever cared to know about concrete! |
My roommate last semester was a civil engineering major. I had the joys of concrete 24/7. 
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cherylpf
crazy cat lady
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Joined: 14 May 2002
Posts: 17305
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Posted: 09/25/05 - 15:07 Post subject: Re: Memo to McDonalds
| Ms. Jenn wrote: | | marathonrnr262 wrote: | | Ms. Jenn wrote: |
WRONG, WRONG WRONG!
Complete hydration is rare in the field due to a lack of moisture and the long period of time (sometimes decades) required to achieve complete hydration. Just because the concrete is hard does not mean it has completely hydrated. Concrete is designed to reach desired strength within 30 days of being set, even though it has NOT hydrated thoroughly.
Additionally, if concrete is resaturated after a drying period, hydration will resume and strength will again increase. Outdoor exposures often continue to provide moisture through ground contact and rainfall. Indoor concretes often dry out after curing and do not continue to gain strength. |
Ratten, fratten , mlatten, kratten..... rabbit.
However, the sidewalk is then perfect for running on if it has not hydrated and completely hardened. Better for the knees ya know.
Sheldon. |
It's even harder on the knees when it's hard, wet and slippery (from the sprinklers) and you fall
You should have known better than to say something about concrete! You knew I'd catch it and give you more than you ever cared to know about concrete! |
see my response in the fractures thread. I slipped and broke my tailbone on wet concrete one summer 
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j1miller
Puppy Love!
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Joined: 07 Jul 2002
Posts: 15447
Location: Lost on trail.
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Posted: 09/25/05 - 16:12 Post subject:
you people crack me up!
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andydp
Member
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Joined: 23 Sep 2003
Posts: 8122
Location: Upstate NY near Albany
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Posted: 09/26/05 - 11:52 Post subject: Re: Memo to McDonalds
| Ms. Jenn wrote: |
WRONG, WRONG WRONG!
Complete hydration is rare in the field due to a lack of moisture and the long period of time (sometimes decades) required to achieve complete hydration. Just because the concrete is hard does not mean it has completely hydrated. Concrete is designed to reach desired strength within 30 days of being set, even though it has NOT hydrated thoroughly.
Additionally, if concrete is resaturated after a drying period, hydration will resume and strength will again increase. Outdoor exposures often continue to provide moisture through ground contact and rainfall. Indoor concretes often dry out after curing and do not continue to gain strength. |
I love it when you talk dirty - when do you get to the water/cement ratio part ?
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Ms. Jenn
Fresh, Hot & Wild
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Joined: 14 Feb 2004
Posts: 7935
Location: Suite 550
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Posted: 09/26/05 - 12:37 Post subject: Re: Memo to McDonalds
| andydp wrote: | | Ms. Jenn wrote: |
WRONG, WRONG WRONG!
Complete hydration is rare in the field due to a lack of moisture and the long period of time (sometimes decades) required to achieve complete hydration. Just because the concrete is hard does not mean it has completely hydrated. Concrete is designed to reach desired strength within 30 days of being set, even though it has NOT hydrated thoroughly.
Additionally, if concrete is resaturated after a drying period, hydration will resume and strength will again increase. Outdoor exposures often continue to provide moisture through ground contact and rainfall. Indoor concretes often dry out after curing and do not continue to gain strength. |
I was saving that for PM. I don't want team prude get the admin to ban me!
I love it when you talk dirty - when do you get to the water/cement ratio part ? |
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andydp
Member
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Joined: 23 Sep 2003
Posts: 8122
Location: Upstate NY near Albany
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Posted: 09/26/05 - 14:47 Post subject: Re: Memo to McDonalds
| Ms. Jenn wrote: | | andydp wrote: | | Ms. Jenn wrote: |
WRONG, WRONG WRONG!
Complete hydration is rare in the field due to a lack of moisture and the long period of time (sometimes decades) required to achieve complete hydration. Just because the concrete is hard does not mean it has completely hydrated. Concrete is designed to reach desired strength within 30 days of being set, even though it has NOT hydrated thoroughly.
Additionally, if concrete is resaturated after a drying period, hydration will resume and strength will again increase. Outdoor exposures often continue to provide moisture through ground contact and rainfall. Indoor concretes often dry out after curing and do not continue to gain strength. |
I love it when you talk dirty - when do you get to the water/cement ratio part ? |
I was saving that for PM. I don't want team prude get the admin to ban me! |
I suppose talking about "slump tests" is out of the question ?
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Ms. Jenn
Fresh, Hot & Wild
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Joined: 14 Feb 2004
Posts: 7935
Location: Suite 550
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Posted: 09/26/05 - 15:26 Post subject: Re: Memo to McDonalds
| andydp wrote: | | Ms. Jenn wrote: | | andydp wrote: | | Ms. Jenn wrote: |
WRONG, WRONG WRONG!
Complete hydration is rare in the field due to a lack of moisture and the long period of time (sometimes decades) required to achieve complete hydration. Just because the concrete is hard does not mean it has completely hydrated. Concrete is designed to reach desired strength within 30 days of being set, even though it has NOT hydrated thoroughly.
Additionally, if concrete is resaturated after a drying period, hydration will resume and strength will again increase. Outdoor exposures often continue to provide moisture through ground contact and rainfall. Indoor concretes often dry out after curing and do not continue to gain strength. |
I love it when you talk dirty - when do you get to the water/cement ratio part ? |
I was saving that for PM. I don't want team prude get the admin to ban me! |
I suppose talking about "slump tests" is out of the question ? |
Slump tests are the dirtiest! 
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