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US Concrete Products: Cement and Aggregates for Long-Term Durability

Learn about US Concrete Products' high-quality cement and aggregates, meeting ASTM standards for durability. Find out how our products optimize material use and ensure long-term performance.

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US Concrete Products: Cement and Aggregates for Long-Term Durability

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  1. Presentation Summary • Company History • Concrete Basics • USCP’s Product Line / Highlights • Manufacturing Plant • Questions

  2. US Concrete Products • Started in 2000 • Principals’ background with the Sakrete Company • Did all company specialty product mix designs

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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)

  8. Total Particle Size Distribution • 7 different sizes total between 3/8” #50 sieve • Cement fills the voids between the particle sizes

  9. 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

  10. 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

  11. 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

  12. How do we know this? • USCP dries aggregate for major competitors

  13. 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 hours. . . . Regardless of the mix design used, 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 • 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.

  14. Deck Mix line for full depth repair • Engineered concrete in pre-packaged form • Single component • Graded coarse & fine aggregates for proper particle-size 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

  15. 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

  16. Just add water Contains gravel Air entrained 6” slump at time of placement Water/Cement ratio of .37 Shrinkage Compensated Corrosion Inhibitor Features of Deck Mix AE & FP:

  17. 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 7 days 28 days 2000 psi 4000 psi 6000+psi • Bond strength (ASTM C 882) : 1 day 7 days 28 days 350 psi 890 psi 1800+psi

  18. 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

  19. 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

  20. Benefits from a low exotherm: • Eliminates thermal cracking • Setting times are less affected by ambient temperatures • Predictability of setting times

  21. 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

  22. HP Concrete Mix Properties • 6-8” slump • 6.5% air content • .38 water/cement ratio

  23. HP Concrete - Technical Information: • Compressive Strength (ASTM C 39) : 2 Hours1 Day7 Days28 Days 2750 psi 4500 psi 5000 psi 6000 + psi • Flexural Strength(ASTM C 293): 28 days 800 psi

  24. HP Concrete - Technical Information: • Freeze thaw cycling - (ASTM C 666): 25 cycles50 cycles100 cycles300 cycles Loss -.02% -0.025% -0.028% -0.08% RDM 100% 100% 104% 101%

  25. HP Concrete - Technical Information: • Length change (ASTM C 157 – dry cured): 1 day28 days 56 days 150 days 0.0011% -0.023% -0.023% -0.025%

  26. Project References – HP Concrete: Logan Airport • Runway Repairs • Gate Areas • Centerline Lighting Replacement

  27. 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

  28. 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

  29. Reliable • Consistent • Flexable

  30. بزرگترین بانک پاورپوینت ایرانwww.txtzoom.comبانک هوشمند اسناد متنی

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