Construction 4 - Specific Gravity

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9 Terms

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Bulk Specific Gravity of Aggregates (Paving Mixture)

P - percent weight
G - specific gravity

<p>P - percent weight<br>G - specific gravity</p>

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Effective Specific Gravity of Aggregates (Paving Mixture)

P_T - total asphalt mixture = 100%
Pa - percent weight of asphalt cement
G_mm - max. specific gravity
G_a – specific gravity of asphalt cement

<p>P<sub>T</sub> - total asphalt mixture = 100%<br>Pa - percent weight of asphalt cement<br>G<sub>mm</sub> - max. specific gravity<br>G<sub>a</sub> – specific gravity of asphalt cement</p>

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Asphalt Absorption of Aggregates (Paving Mixture)

P_T - total asphalt mixture = 100%
Pa - percent weight of asphalt cement
G_b-agg - bulk specific gravity
G_e - effective specific gravity
G_a – specific gravity of asphalt cement

<p>P<sub>T</sub> - total asphalt mixture = 100% <br>Pa - percent weight of asphalt cement<br>G<sub>b-agg</sub> - bulk specific gravity<br>G<sub>e</sub> - effective specific gravity<br>G<sub>a</sub> – specific gravity of asphalt cement</p>

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Max Pressure in Slump Concrete

P - max lateral pressure in Slump Concrete (lb/ft²)
R - rate of placement (ft/h)
T - temperature of concrete form (F)

<p>P - <span>max lateral pressure in Slump Concrete (lb/ft²)</span><br><span>R - rate of placement (ft/h)</span><br><span>T - temperature of concrete form (F)</span></p>

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Open & Close Pores

V_W = Open Pores
V_T - V_S - V_W = Close Pores

<p>V<sub>W</sub> = Open Pores<br>V<sub>T</sub> - V<sub>S</sub> - V<sub>W</sub> = Close Pores</p>

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Linear Shrinkage

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Absolute SG (Asphalt Mixture)

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Bulk SG (Asphalt Mixture)

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Porosity (Asphalt Mixture)