concrete - Eastern Canada (1)

Question

In 2023, researchers found that the presence of lime clasts in an ancient Roman form of this material played a key role in its self-healing properties. For 10 points each:

[10m] Name this composite material. Modern preparations of this material may involve prestressing it with high-strength tendons or embedding it with rebar to reinforce it.

ANSWER: concrete [accept reinforced concrete or ferroconcrete; accept prestressed concrete; accept self-healing concrete; accept Roman concrete]

[10e] Prestressing or reinforcing concrete helps overcome its weakness to this kind of force. A rope experiences this kind of force when it is held taut.

ANSWER: tension [accept tensile force]

[10h] Concrete can also be made more workable and fluid by adding the “super-” form of these additives, reducing the water requirements of concrete production. These additives are also used to decrease the viscosity of polymers.

ANSWER: plasticizers [accept superplasticizers]

<Editors, Chemistry>

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Summary


Northern California	Main	Y	1	20.00	100%	100%	0%
Southern California	Main	Y	7	17.14	100%	71%	0%
Eastern Canada (1)	Main	Y	5	16.00	100%	60%	0%
Eastern Canada (2)	Main	Y	9	20.00	100%	89%	11%
Florida	Main	Y	1	20.00	100%	100%	0%
Great Lakes	Main	Y	12	17.50	83%	92%	0%
Lower Mid-Atlantic	Main	Y	9	17.78	89%	89%	0%
Upper Mid-Atlantic	Main	Y	12	20.00	92%	100%	8%
Midwest	Main	Y	9	17.78	89%	89%	0%
North	Main	Y	1	20.00	100%	100%	0%
Northeast	Main	Y	12	20.00	100%	100%	0%
Pacific	Main	Y	9	17.78	89%	78%	11%
South Central	Main	Y	4	17.50	75%	100%	0%
Southeast	Main	Y	13	17.69	85%	92%	0%
UK (North)	UK	Y	5	18.00	80%	100%	0%
UK (South)	UK	Y	8	20.00	88%	100%	13%
Upstate NY	Main	Y	5	20.00	100%	100%	0%

Data


Ottawa C	Carleton A	10	10	20
McGill A	Ottawa A	10	10	20
McGill B	Ottawa D	10	10	20
McGill E	Carleton B	0	10	10
Ottawa B	McGill C	0	10	10