48-Site Concrete Specifications.pdf
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- Attached to
- Construct 241st Security Measures
- Solicitation number
- W50S98-25-B-A006
About this file
This document is a Site Concrete Specifications sheet that provides detailed technical requirements for concrete construction. The specifications mandate that all site concrete must have a 4,000 PSI compressive strength at 28 days, with a maximum slump of 3 inches and 6% (+/- 1%) air entrainment, conforming to ASTM C94. Key requirements include using Portland cement (ASTM C150, Type I), a mineral aggregate base (ASTM C33), and clean water free from deleterious materials. Special conditions address concrete placement, including restrictions on temperature (not below 40 degrees F) and requirements for cold and hot weather admixtures. Additional specifications cover sidewalk sealing with Tnemec 668 Deck A Pell 40 Sealer and the use of Type III microfiber reinforced concrete with a dosing rate of 2.5 lbs/cy when specified. The document emphasizes that any concrete damaged prior to project acceptance must be replaced at no cost to the government.
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SITE CONCRETE SPECIFICATIONS
NOT TO SCALE
1. THESE SPECIFICATIONS APPLY TO CONCRETE APPEARING ON THE CIVIL
DRAWINGS. ALL OTHER CONCRETE SHALL CONFORM TO THE
SPECIFICATIONS ON THE STRUCTURAL DRAWINGS.
2. ALL SITE CONCRETE SHALL BE 4,000 PSI COMPRESSIVE STRENGTH AT 28
DAYS WITH MAXIMUM SLUMP OF 3 INCHES AND 6% (+/- 1%) AIR
ENTRAINMENT; ASTM C94.
3. USE ACCELERATING ADMIXTURES IN COLD WEATHER ONLY WHEN
ACCEPTABLE TO THE COR. USE OF ADMIXTURES SHALL NOT RELAX COLD
WEATHER PLACEMENT REQUIREMENTS. DO NOT USE CALCIUM CHLORIDE.
4. USE SET-RETARDING ADMIXTURES DURING HOT WEATHER ONLY WHEN
ACCEPTABLE TO THE COR.
5. DO NOT PLACE CONCRETE WHEN BASE SURFACE TEMPERATURE IS LESS
THAN 40 DEGREES F OR SURFACE IS WET OR FROZEN.
6. PORTLAND CEMENT: ASTM C150; NORMAL - TYPE I.
7. MINERAL AGGREGATE BASE: ASTM C33.
8. WATER: CLEAN AND FREE FROM INJURIOUS AMOUNTS OF OIL, ALKALI,
ORGANIC MATTER, OR OTHER DELETERIOUS MATERIAL.
9. AIR ENTRAINMENT: ASTM C260 OR AASHTO M-154. AIR ENTRAINING
ADMIXTURES SHALL BE ADDED TO THE MIXER IN THE AMOUNT NECESSARY
TO PRODUCE THE SPECIFIED AIR CONTENT.
10. CONCRETE SIDEWALK SHALL HAVE TNEMEC 668 DECK A PELL 40 SEALER
APPLIED AS A FLOOD COAT AT 150 SQUARE FEET PER GALLON. SEALER
SHALL BE APPLIED PER MANUFACTURER'S RECOMMENDATIONS.
11. ANY CONCRETE DAMAGED PRIOR TO FINAL ACCEPTANCE OF THE PROJECT
SHALL BE REPLACED AT NO EXPENSE TO THE GOVERNMENT.
12. WHERE FIBER REINFORCED CONCRETE IS SPECIFIED - USE TYPE III
MICROFIBER REINFORCED CONCRETE WITH DOSING RATE OF 2.5LBS/CY.
NOTES:
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