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RISEffects of Rock Properties on the Wear of TBM Disc Cutter: A Case Study of the Yellow River Diversion Project, China
Publisher: ASCE
Abstract: Disc cutters are a key component of a tunnel boring machine (TBM) for rock rolling and crushing, yet their high cost and complicated maintenance process generally increase the construction cost of a project significantly. ...
Public-Opinion Sentiment Analysis for Large Hydro Projects
Publisher: American Society of Civil Engineers
Abstract: Public opinion is becoming increasingly involved in feasibility studies, construction, and post-evaluation of large hydro projects. Recently, with the rapid development of social network services, sentiment analysis can ...
Low-Temperature and Fatigue Characteristics of Degraded Crumb Rubber–Modified Bitumen Before and After Aging
Publisher: ASCE
Abstract: The high viscosity and poor storage stability of crumb rubber–modified asphalt (CRMA) can be partially addressed by the appropriate degree of degradation of the crumb rubber modifier. However, the low-temperature and fatigue ...
Influence of SBS on the Aging Properties of High-Content Terminal Blend Rubber Modified Asphalt
Publisher: ASCE
Abstract: The goal of this study was to investigate the effect of styrene-butadiene-styrene (SBS) polymer on the aging properties of high-content terminal blend rubber modified asphalt (HCTBMA). All asphalt was tested for chemo-rheological ...
A Peak Shear Displacement Model Considering Three-Dimensional Roughness of the Actual Contact Joint Surface
Publisher: ASCE
Abstract: During rock joint shear tests, only some steep asperities on the shear surface participate in the shearing process. The existing peak shear displacement (PSD) models fail to reflect the role of steep asperities on the PSD ...
Classification of Rock Hardness at Tunnel Faces Based on a Drilling Parameter Cloud Map and Convolutional Neural Network
Publisher: American Society of Civil Engineers
Abstract: Accurately measuring rock hardness at a tunnel face is crucial for evaluating rock mass quality and ensuring construction safety. This study developed a fast and accurate classification method for rock hardness. Firstly, ...
Chemical, Physical, and Rheological Evaluation of Aging Behaviors of Terminal Blend Rubberized Asphalt Binder
Publisher: ASCE
Abstract: Terminal blend rubberized asphalt (TBRA) is widely used as binder of asphalt mixtures due to its technical characteristics of storage stability. However, its road performance deteriorates due to the aging process of TBRA. ...
Analysis of Quantification and Mechanism of SBS Modifier in SBS-Modified Asphalt
Publisher: ASCE
Abstract: The determination of styrene-butadiene-styrene (SBS) content in SBS-modified asphalt (SBSMA) is crucial in road quality control. In this study, a polystyrene (PS)-based index, which is an alternative indicator for the ...
Effect of Bio-oil on Rheology and Chemistry of Organosolv Lignin–Modified Bitumen
Publisher: ASCE
Abstract: Lignin, one of the most abundant natural polymers, has been extensively studied as an additive in bituminous binders. Even though the lignin improves the overall resistance against oxidative aging of bitumen, it could lead ...
Experimental Investigation of Nonlinear Flow Characteristics of Real Rock Joints under Different Contact Conditions
Publisher: American Society of Civil Engineers
Abstract: Laboratory experiments were conducted on three artificial rock joints with natural characteristics to study the nonlinear fluid flow characteristics in a single joint under different contact conditions. A noncontact, ...