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Time-Saver Standards for Landscape Architecture > Concrete > Flashcards

Concrete Flashcards

1
Q

Concrete

A

Aggregate, Cement, Water, and Admixture

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2
Q

Portland Cement

A

Lime, Silica, Alumina, Gypsum

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3
Q

How long does Cement take to reach full strength?

A

28 Days

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4
Q

Isolation (expansion) Joint

A

Provide for lateral movement between slabs. Extend the full depth of the Concrete

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5
Q

Concrete Qualities

A

Strength, Durability, Stability, Availability, Adaptability, and Low-cost

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6
Q

Properties of Concrete

A

Constituents, Skills used in placing

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7
Q

Concrete resistance to freeze/thaw and deicing chemicals

A

Apply admixtures

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8
Q

Concrete resistance to abrasion and wear

A

Increased if the concrete mix contains well-graded strong aggregate

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9
Q

Methods of Concrete Placement

A

Cast in Place, Sprayed, Mixed in Place

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10
Q

Process of Hydration

A

Cement and Water mixture results in hardening

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11
Q

Types of Aggregate for Concrete

A

Sand, Gravel, Crushed Stone

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12
Q

Selection of Aggregate for Concrete

A

Resistance to abrasion, Performance, Resistance to effects of freezing/chemicals, Range of Aggregates

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13
Q

Admixtures

A

Workability, Reduce Moisture, Increase durability, Resistance to Freezing, Accelerate or retard hardening or setting, Increase Flowability

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14
Q

Water Quality for Concrete

A

Potable Water (Uncontaminated)

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15
Q

2 Styles of Mixing Concrete

A

Ready-mix and On-site Mixing

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16
Q

Slump Test

A

Determines Relative Consistency & Reflects changes in the amount of water in the mix

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17
Q

Air Content Test

A

Determines the air entertainment at the time of use

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18
Q

Cylinder Test

A

Determines the compressive strength of cured concrete

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19
Q

Site Preparation for Use of Concrete

A

Granular sub-base over-prepared, and compacted, subgrade

20
Q

Benefits of Reinforcement

A

Controls cracking and give greater tensile strength

21
Q

Purpose of Joints

A

Minimize damaging effects of expansion and contraction in concrete due to temperature variations and the presence of moisture

22
Q

Control, or contraction, joints

A

Designed to restrict the cracking of concrete at predetermined locations. ¼ to ⅓ the thickness of the concrete. At intervals roughly the width of slab

23
Q

Construction Joint

A

Provide places where the casting of concrete can be stopped

24
Q

Joint Fillers

A

Joints tend to be filled and sealed to keep out moisture and debris

25
Q

Types of Joint Fillers

A

Fiber Filler
Wood Dividers
Plastics, rubber, cork, or metal

26
Q

Joint Sealant

A

Prevents filler material from bleeding or being squeezed up. Keep out debris. Keep out water

27
Q

Two of the most common types of concrete finishes

A

Floating and Troweling

28
Q

Colored Concrete One Course Method

A

Mixing pigments when concrete is created

29
Q

Colored Concrete Two-Course Method

A

Top or finish surface after laying regular concrete

30
Q

Dry-shake Method

A

Sprinkling Special pigments on the surface

31
Q

Stains and Paints

A

Typically done on existing concrete

32
Q

Exposed Aggregate

A

Resistance to slipping and heavy wear

33
Q

One-course Aggregate Finish

A

Fine aggregate added to the concrete mix. Hosing or acid washing and brushing
Surface retardant applied

34
Q

Two-course Aggregate Finish

A

Base concrete laid. Concrete topping with aggregate added over base concrete Hosing or acid washing and brushing

35
Q

Seeding Aggregate Finish

A

Sprinkling aggregate over a freshly placed concrete base

36
Q

Special Non-slip finishes

A

Floats, trowels, brooms, or dry-shaking grains onto the surface. Grains such as Silicon carbide and aluminum oxide

37
Q

Edging

A

Prevents chipping

Helps compact and harden

38
Q

Wet Covering

A

Covering with moisture-retaining fabric

Keeps concrete wet

39
Q

Waterproof paper or plastic sheets

A

Prevents rapid loss of moisture from the concrete

40
Q

Sprinkling or ponding of water

A

Effective but expensive

Sand or earth berms to be removed later

41
Q

Curing compounds

A

Used in conjunction with coverings. Used to help sustain curing

42
Q

Temperature Control

A

Cover with sheets. Use Heaters

43
Q

Sealers and Glaziers

A

Prevent or Reduce Moisture Penetration and Chloride Penetration

44
Q

Sealers and Glaziers

A

Used to waterproof or bring out the natural color

45
Q

Restoration and Repair of Concrete

A

(1) Removal/Cleaning of Damaged Concrete
(2) Concrete or grout is mixed in small amounts
(3) Treat damaged areas

Time-Saver Standards for Landscape Architecture (6 decks)

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