ACCUMULATOR 5247244 - Caterpillar

head of material that is carried forward by the screed strike-off make up the major force that resists the forward motion of the screed. Control of the force is necessary for performance of the leveling process.A variation in the head of material changes the pulling force. The variation in material changes the density of the material in the strike off zone. As the quantity of the material decreases, the density of the material decreases. As the quantity of the material increases, the density of the material increases. A change in density will affect the internal stress that is developed in the mix. Internal stress affects the force that resists the weight of the screed. Internal stress affects the compacting action of the screed. If the material passes under the strike-off that is less compacted, the weight of the screed will cause the screed to sink. If the screed sinks, a thinner mat will be produced. If the material that passes under the strike-off is dense, the screed rises because less compaction is required under the screed to carry the weight of the screed. The head of material affects the density in the strike-off zone. Variations in the quality of material will cause variations in the thickness of the mat.Control the quantity of material in the auger chamber. This will allow the screed to level properly. This will allow the screed to compact properly.