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FP-96 English Version - Eastern Federal Lands Highway Division

FP-96 English Version - Eastern Federal Lands Highway Division

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Section 601TABLE 601-1Composition of Minor Structure ConcretePropertySpecificationMinimum cement content, lb/yd 3 611Maximum water/cement ratio 0.49Maximum slump, inch 4Minimum air content, % 4Size of coarse aggregate AASHTO M 43with 100%passing the1.5-inch sieveMinimum 28-day compressive strength, psi 3,000Construction Requirements601.04 General. Perform excavation and backfill work under Section 209.When concrete is cracked, spalling, or scaling, remove concrete to the nearestjoint.Design and construct forms that are free of bulge and warp and allow for removalwithout injuring the concrete. When concrete contains a retardingadmixture, fly ash, or other pozzolan replacement for cement, design the formsfor a lateral pressure equal to that exerted by a fluid weighing 150 pounds percubic foot.Use wood, metal, or other suitable material for forms. Keep forms clean andcoat with a form release agent or form oil before placing concrete.Place and fasten reinforcing steel according to Subsection 554.08.601.05 Placing Concrete. Conform to Subsection 552.10. Moisten theforms and foundation immediately before placing concrete. Discharge concretewithin the time limit shown in Table 552-2.521

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