Joint and layer treatment method of asphalt concrete core wall in high altitude area

• Main Authors: HUANG PEIJIE, ZHANG GUANGLI, SUN XINJIAN, ZHANG BAOYUN, LIU HAI, WANG JIWEI, YANG QIFU, LONG ANXIONG
• Format: Patent
• Language: Chinese; English
• Published: 31.01.2023
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention relates to a joint and layer treatment method of an asphalt concrete core wall in a high altitude area, in joint treatment, transverse joints of the asphalt concrete core wall are reduced, when the transverse joints appear, the combination gradient of the transverse joints is made into a slope with the gradient being less than 1: 3, the transverse joints of the upper layer and the lower layer are staggered by more than 2 m, and rainwater deposition is reduced; in the layer surface treatment, the surface of normal concrete is kept rough and flat, rough surface treatment is conducted, laitance, milk skin, waste residues and adhesive substances on the surface of the normal concrete are all removed, bituminous mortar or diluted asphalt is smeared on the surface, the diluted asphalt needs to be smeared evenly, no blank or block mass exists, the color is consistent, and the thickness of the surface of each square meter of the normal concrete needs to be adjusted. The use amount of the diluted asphalt