Presentation Summary
- Company History
- Concrete Basics
- USCP’s Product Line / Highlights
- Manufacturing Plant
- Questions
US Concrete Products
Started in 2000
Principals’ background with the Sakrete
Company
Did all company specialty product mix
designs
Concrete Basics
Its as simple at 1-2-3
1 part cement meeting ASTM C 150, 2
parts concrete sand meeting ASTM C
33, 3 parts coarse aggregate meeting
ASTM C 33
ASTM Designations – Why
they are important
Cement meeting ASTM C 150 assures
the proper chemical make up for
consistency in performance and long
term durability
Foreign imported cements can be
cheaper but you don’t know exactly
what you are getting from shipment to
shipment
ASTM Designations – Why
they are important
Aggregates meeting ASTM C 33
gradation requirements assures the
proper particle size distribution
Proper particle sized distribution is
critical to produce concrete with long
term durability
ASTM C 33 – Concrete Sand
Sieve (Specification E 11) Percent
Passing
9.5-mm (3⁄8-in.) 100
4.75-mm (No. 4) 95 to 100
2.36-mm (No. 8) 80 to 100
1.18-mm (No. 16) 50 to 85
600-μm (No. 30) 25 to 60
300-μm (No. 50) 5 to 30
150-μm (No. 100) 0 to 10
ASTM C 33 – #8 or 3/8” Aggregate
Sieve (Specification E 11) Percent
Passing
12.5-mm (1/2-in.) 100
9.5-mm (3/8-in.) 85-100
4.75-mm (No. 4) 10-30
2.36-mm (No. 8) 0-10
1.18-mm (No. 16) 0-5
600-μm (No. 30)
300-μm (No. 50)
150-μm (No. 100)
Total Particle Size Distribution
7 different sizes total between 3/8”
#50 sieve
Cement fills the voids between the
particle sizes
Total Particle Size Distribution
– Why is this important?
The matrix created helps assure the
long term durability of the concrete
Assures water addition is not excessive
– too much fine aggregate needs more
water
Optimizes the use of materials
Typical Sand Gradation –
Competitors use
Sieve (Specification E 11) Percent
Passing
9.5-mm (3⁄8-in.) 100
4.75-mm (No. 4) 100
2.36-mm (No. 8) 100
1.18-mm (No. 16) 50 to 85
600-μm (No. 30) 30 to 40
300-μm (No. 50) 0 to 10
150-μm (No. 100) 0
Why do they use this gradation?
Most of the major suppliers have their
sand dried by another company
The sand used is conveyed
pneumatically
Multiple particle sizes as defined by
ASTM C 33 would segregate in the
pnuematic conveying process
How do we know this?
USCP dries aggregate for major
competitors
What are full depth concrete
repair materials?
Full-Depth Repairs
4.0 Material Considerations
Typical full-depth repair operations utilize concrete mixes containing 390-502kg/m3 (658-846 lbs/yd3) of
either cement Type I or Type III cement. A set-accelerator is frequently used to permit opening in 4 to 6
, the concrete mixture for
full-depth repairs should have the following
properties:
6.5 ± 1.5 percent of entrained air in the concrete
(less air may be permissible in nonfreeze areas).
50 to 100 mm (2 to 4 in.) slump
hours. . . . Regardless of the mix design used
Mixes using Type III cement may require slightly more mix water than a similar mix with
Type I portland cement. However, too much extra water may cause the concrete to suffer
from high shrinkage during curing. A water-reducing admixture will disperse cement
particles and reduce the water necessary for workability.
Above can be found at http://www.fhwa.dot.gov/pavement/full4.htm . Pvement Technology on FHA
website.
Deck Mix line for
full depth repair
-
Engineered concrete in pre-packaged form
Single component
Graded coarse & fine aggregates for proper particlesize distribution
ASTM C33 concrete sand with gravel meeting ASTM
#8 (3/8”)
AE - 80lb. bag, .61 cu.ft.
FP – 50lb. Bag, .42 cu.ft. (neat) .52 cu.ft (ext)
Air-entrained
Corrosion inhibitor
Full Depth Repair
Deck Mix AE & FP
Deck Mix AE – Air
Entrained Concrete with
Corrosion Inhibitor
Deck Mix FP – Air
Entrained with Corrosion
Inhibitor, designed
specifically for form and
pump applications
Features of Deck Mix AE &
FP:
Just add water
Contains gravel
Water/Cement
ratio of .37
Air entrained
Shrinkage
Compensated
6” slump at time
of placement
Corrosion
Inhibitor
Technical Information-Deck Mix Ae
Length Change (ASTM C 157 - dry cured): -0.028% @ 28
days
6.5% Air Entrainment (+/- 1.25%)
Compressive strength (ASTM C 39 - 6”x12” Cylinders) :
1 day
2000 psi
7 days
4000 psi
28 days
6000+psi
Bond strength (ASTM C 882) :
1 day
350 psi
7 days
890 psi
28 days
1800+psi
What is HP Cement?
A very fast setting portland cement
based system
30 minute final setting time
Free of sulfates (Gypsum) and high
alumina cement
What Makes HP Cement Unique?
Very low heat of hydration
Very low shrinkage
Excellent durability and resistance to freeze
thaw cycling
Economical
Includes a corrosion inhibitor
Benefits from a low exotherm:
Eliminates thermal cracking
Setting times are less affected by
ambient temperatures
Predictability of setting times
HP Concrete
Full depth fast setting concrete
Just add water
6”+ slump
Manufactured with 3/8” pea gravel
Excellent resistance to freeze thaw
cycling
Coatings(100% Solids) applied within
24 – 48 hours
HP Concrete Mix Properties
6-8” slump
6.5% air content
.38 water/cement
ratio
HP Concrete - Technical
Information:
Compressive Strength (ASTM C 39) :
2 Hours
2750 psi
1 Day
4500 psi
7 Days
5000 psi
Flexural Strength(ASTM C 293):
28 Days
6000 + psi
28 days
800 psi
HP Concrete - Technical
Information:
Freeze thaw cycling - (ASTM C 666):
Loss
RDM
25 cycles 50 cycles
-.02%
-0.025%
100%
100%
100 cycles
-0.028%
104%
300 cycles
-0.08%
101%
HP Concrete - Technical
Information:
Length change (ASTM C 157 – dry cured):
1 day
0.0011%
28 days
56 days
150 days
-0.023%
-0.023%
-0.025%
Project References – HP
Concrete:
Logan Airport
Runway Repairs
Gate Areas
Centerline Lighting
Replacement
Project References: HP Concrete
MAA - BWI Main Terminal Parking Deck
Full-Depth Repairs
VStructural / Parsons Engineering
Quest Communications Garage
Full-Depth Column Repairs
Consolidated Waterproofing / SK & A
Project References: Deck Mix AE
DHL Service Center – New York, NY
Full-Depth Repairs
Structural Preservation / McMullen
Watergate at Landmark – Wash, DC
Balcony Overlays and Full-Depth
Concrete Protection & Restoration / TCE
Reliable
Consistent
Flexable