Longitudinal contraction joint cutting machine for asphalt concrete pavement
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- 金华正方机械设备有限公司
- Publication Date
- 2018-11-13
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Abstract
Description
technical field
[0001] The invention relates to the field of asphalt concrete processing equipment, in particular to a longitudinal shrinkage joint cutting machine for asphalt concrete pavement. Background technique
[0002] Concrete is mainly divided into asphalt concrete and cement concrete. At present, asphalt concrete is the most widely used. The upper layer of asphalt concrete pavement is composed of concrete panels with a certain thickness, which has the property of thermal expansion and contraction. Due to changes in temperature throughout the year, concrete will expand and contract to varying degrees. And within a day and night, when the daytime temperature rises, the temperature of the top surface of the concrete slab is higher than that of the bottom surface, and this temperature gradient will cause the middle part of the slab to protrude. When the temperature drops at night, the temperature of the top surface of the concrete slab is lower than that of the bottom ...