Open AccessStudy on Compaction Characteristics and Construction Control Index of Gravel Materials in a Core Wall Dam
Author(s) -
Long Wang,
Xiaogang Wang,
Jianming Zhao,
Renlong Huang,
Zhigang Yang,
Rongfeng Ma
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/669/1/012012
Subject(s) - compaction , gradation , geotechnical engineering , permeability (electromagnetism) , water content , relative density , proctor compaction test , geology , materials science , computer science , composite material , membrane , biology , computer vision , genetics , sintering
Gravel materials are widely used in dam engineering in western China due to their excellent engineering characteristics such as high compaction density, high shear strength and strong water permeability. The compaction standard of gravel materials is evaluated by the relative density index. Therefore, after a reasonable compaction standard is determined, the next most critical link is the control of construction filling quality. Based on the results of field rolling tests, this paper analyzes the basic influence laws of gravel content, paving thickness, rolling times and water content on the compaction dry density and relative density of gravel materials, and studies the basic compaction characteristics of gravel materials, and determines the construction compaction parameters based on satisfying the design compaction standard. By controlling the gradation, rolling parameters and water content of dam construction gravel materials, the filling quality of dam construction can meet the design compaction standard, so as to ensure the safety and stability of dams.