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RISEffect of Polycarboxylate Superplasticizer in Ordinary Portland Cement and Sulfate Resistant Cement
Publisher: American Society of Civil Engineers
Abstract: Polycarboxylate superplasticizers (PCE) are the most widely used admixtures in today’s cementitious construction materials. The molecular structure has a decisive influence on the effectiveness of PCE, which also can be ...
Runoff Mitigation by Underdrained Permeable Pavements in Shallow Groundwater Environments: A Field Investigation
Publisher: ASCE
Abstract: Permeable pavements equipped with an underdrain are one of the most widely used and efficient types of green infrastructure. They can greatly reduce, delay, and retain surface runoff, given their high surface infiltration ...
Development and Validation of the Coupled Diffusion-Kinetics Aging Model to Analyze Field Aging Gradient in Asphalt Pavements
Publisher: ASCE
Abstract: Ultraviolet (UV) radiation and thermal oxidation are two leading causes of the aging of asphalt pavements. However, there is a lack of a suitable analytical model to consider both when the field aging gradient of asphalt ...
Effect of Sisal Fibers on the Rheology of Cement Paste Plasticized by Polycarboxylate Superplasticizer
Publisher: ASCE
Abstract: Sisal fibers (SF) and polycarboxylate superplasticizers (PCE) contribute to the sustainable development of cementitious materials by improving and optimizing their hardening properties. In this study, the impact of SF and ...
Total Least-Squares Estimation for 2D Affine Coordinate Transformation with Constraints on Physical Parameters
Publisher: American Society of Civil Engineers
Abstract: The error-in-variable (EIV) model takes the error of all variables into account and has been widely applied to many practical problems arising in environmental study, geology, geographic information science (GIS), and ...
Impact of Coal Ranks and Confining Pressures on Coal Strength, Permeability, and Acoustic Emission
Publisher: ASCE
Abstract: Hydraulic fracturing is extensively applied as an effective stimulation technology to enhance coalbed methane recovery. Coal strength and permeability play critical roles in the performance of hydraulic fracturing, and ...
Laboratory and Field Patching Performance of a Half-Warm Mix Using Waste Cooking Oil–Based Biobinder with Reclaimed Asphalt Pavement
Publisher: ASCE
Abstract: In this study, a new half-warm mix patching material was developed using polymerized waste cooking oil (WCO)-based biobinder with 100% reclaimed asphalt pavement (RAP). Laboratory tests were conducted on this bio-RAP mixture ...
Fabrication of Piezoresistive CNT/CNF Cementitious Composites with Superplasticizer as Dispersant
Publisher: American Society of Civil Engineers
Abstract: Dispersion of carbon nanotubes (CNTs)/carbon nanofibers (CNFs) in cement matrixes is one of the key problems for fabricating piezoresistive CNT/CNF cementitious composites. The use of existing dispersants such as sodium ...
Modification of Asphalt Materials to Resist Studded-Tire Wear on Pavements
Publisher: ASCE
Abstract: Studded tires are used during winter seasons to reduce snow- and ice-related accidents in several cold climate regions. However, during driving the studs in these tires progressively punch into the asphalt pavement and ...
Evaluation of Cement-Based Grout for Reinforcing Unsafe Rocks of Stone Carvings at Hangzhou Klippe in China
Publisher: American Society of Civil Engineers
Abstract: Cement-based grouting materials can be applied to reinforce unsafe rocks of stone carvings that are attached to or carved out of cliffs. However, studies on the evaluation, that is, the pros and cons of the applied grouting ...