p90x On the cement concrete pavement common diseas

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On the cement concrete pavement common diseases and their control

Paper Keywords: Cement Concrete Pavement Disease Control
Abstract: cement concrete pavement with high intensity, good stability, long life,p90x, simple construction, etc., in the widely used low-grade highways. This article discusses the common diseases of cement concrete pavement and its control. Cement concrete pavement as high strength, good stability, long life characteristics of simple construction, low-grade highways in the widely used in highway construction. This article discusses the common diseases of cement concrete pavement and its control. 1. Cement concrete pavement and causes 1.1 crack (1) transverse cracks. As the water loss of cement concrete shrinkage, shrink, cut slit in time and so causes no cement concrete pavement direction perpendicular to the line,Wholesale MAC Cosmetics, there are rules of cracks. (2) vertical cracks. As the embankment body filler, improper construction methods, resulting in uneven settlement of foundation, so that slab in the weight and driving under the pressure generated in parallel with the line, or basic parallel to the crack. (3) cross-cracks. Since its insufficient strength of cement concrete pavement, subgrade and road base strength and water stability of poor performance or cause instability of the cement produced cement concrete pavement for more than two or two cross-cutting fractures. (4) plate angle fracture. As the plate corner by the continuous loads, foundation, strength, and warping the role of stress and other factors on both sides of joint production and plate angle equal throughout the entire thickness of cement concrete pavement cracks. 1.2 surface damage (1) grain crack, network crack, board peeling and flaking. Because excessive finishing construction, maintenance and other causes not timely pavement surface appears light, thin or fat, filamentous surface cracks and crack network. (2) Ma face, explicit. As the concrete slab segregation led to loss of surface binding mill, sheets or sections of panels presented over the rough surface or exposed aggregate. (3) polished. As the aggregate result in poor wear resistance of cement concrete pavement in the wheel load after repeated rolling mill, that polished, skid performance. (4) pit, hole. As the aggregate of the mud causes excessive surface layer of aggregate such as local off holes, pits. 1.3 joint damage (1) sealing material damage, joints cracked. Use, the temperature rise was out of joint filler, sealing materials when temperature dropped can not be restored so that gap of the gap formation, mud, sand,MAC Cosmetics Discount, rock chips and other debris intrusion into another obstacle to expansion when stretched, resulting in road access panel deformation and damage joints. (2) Mud. Sealing material damage, water infiltration lead to pump mud. 1.4 deformation damage (1) the wrong station. As the primary or uneven subgrade compaction,MAC Cosmetics Cheap, resulting in cement concrete pavement adjacent to the vehicle under repeated loading, resulting in differential settlement, leading to the adjacent cement concrete pavement joints produced in the vertical height difference. (2) arch, and subsidence. Expansion joints are hard object obstruction, or expansion joint set is too small, so that when heated slab are not free to be done on both sides of the concrete road leading to transverse joint Body obvious elevation plate board; sealing material damage caused water infiltration from the seam , softening the grass embankment and even softening body, so that joint below the pavement subgrade bearing capacity of the primary and fall, followed by sinking slab,Discount MAC Cosmetics, concrete pavement on both sides of the apparent sinking plate board body.
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