Weina Meng

Weina Meng
Stevens Institute of Technology · Department of Civil, Environmental & Ocean Engineering

Ph.D

About

52
Publications
33,509
Reads
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2,018
Citations
Introduction
Additional affiliations
August 2018 - present
Stevens Institute of Technology
Position
  • Professor (Assistant)
August 2017 - August 2018
Missouri University of Science and Technology
Position
  • Fellow
August 2016 - July 2017
Missouri University of Science and Technology
Position
  • Research Assistant
Education
September 2009 - June 2012
Southwest Jiaotong University
Field of study
  • Location design and lean construction of high speed railway
September 2005 - July 2009
Southwest Jiaotong University
Field of study
  • Bridge and railway engineering

Publications

Publications (52)
Article
In this study, 0 to 75% volume of river sand was replaced by an equivalent amount of pre-saturated lightweight sand (LWS) to enhance mechanical properties and reduce autogenous shrinkage of ultra-high-performance concrete (UHPC). The use of LWS is demonstrated to effectively decelerate and reduce the drop in internal relative humidity and autogenou...
Article
Full-text available
Partial replacement of ordinary portland cement by silica fume (SF) accelerates its rate of hydration reactions. This acceleration is attributed to the enhanced heterogeneous nucleation of the main hydration product, i.e., calcium-silicate-hydrate (C-S-H), on the extra surfaces provided by SF. However, such enhancement of C-S-H nucleation is suppre...
Article
This study develops a rheology control method to improve steel fiber distribution and flexural performance of ultra-high-performance concrete (UHPC) by adjusting the rheological properties of the suspending mortar of UHPC before steel fibers are added. Correlations among the plastic viscosity of the suspending mortar, the resulting steel fiber dist...
Article
Full-text available
Effects of graphite nanoplatelets (GNPs) and carbon nanofibers (CNFs) on mechanical properties of ultra-high-performance concrete (UHPC) are investigated. A non-proprietary UHPC mixture composed of 0.5% steel micro fibers, 5% silica fume, and 40% fly ash was used. The content of the nanomaterials ranged from 0 to 0.3% by weight of cementitious mate...
Article
Full-text available
This paper presents a mix design method for ultra-high performance concrete (UHPC) prepared with high-volume supplementary cementitious materials and conventional concrete sand. The method involves the optimization of binder combinations to enhance packing density, compressive strength, and rheological properties. The water-to-cementitious material...
Article
Arsenate (As(V)) in municipal wastewater leads to a public health problem due to its contamination of natural water sources. Here, we proposed to use sewer pipe made of TiO2-doped cementitious composite (TCC) for As(V) removal from municipal wastewater. The optimum composition of TCC, the performance for As(V) removal in the simulated sewer system,...
Article
This paper presents an intelligent photo interpretation approach to automatically monitor and characterize dense interconnected microcracks in strain-hardening cementitious composite (SHCC) featuring unique crack patterns in terms of crack number and crack width. The presented approach employs a stereo vision system that integrates binocular and mo...
Article
High carbon emissions of cementitious materials is increasingly raising concerns under the grand goal of global carbon neutrality. This paper presents an approach to achieve low-carbon cementitious materials and enhance the mechanical properties while retaining the desired constructability for cast-in-place and precast applications of civil infrast...
Article
Concerns on low rate of glass recycling are rising due to the environmental issues caused by landfills of waste glass. Glass utilization in concrete is a promising approach to vastly improve the glass recycling rate. However, the glass in concrete causes deleterious alkali-silica reaction (ASR), which cracks the concrete and weakens its durability...
Article
The interfacial behaviors play significant roles in various composite materials and structures. This paper presents a logic-guided neural network to seamlessly integrate data-driven methods and scientific knowledge in predicting interfacial properties of steel-concrete composites. The investigated properties include the bond strength, interface sli...
Preprint
Full-text available
Identification of the mechanically exfoliated graphene flakes and classification of the thickness is important in the nanomanufacturing of next-generation materials and devices that overcome the bottleneck of Moore's Law. Currently, identification and classification of exfoliated graphene flakes are conducted by human via inspecting the optical mic...
Article
Full-text available
Plastic viscosity is a key property of ultra-high-performance concrete (UHPC) and must be controlled during the mixing to achieve desired fresh and hardened properties. This paper presents a video recognition technology for real-time assessment of plastic viscosity using a video captured by a camera during the mixing of UHPC. A long-term recurrent...
Article
This paper presents feasibility and benefits of utilizing off-specification fly ash (OSFA), which would have otherwise been landfilled, in preparing ultra-high-performance concrete (UHPC). Effects of mixture design variables, including OSFA content, water-to-binder ratio, and slag content, on compressive and flexural properties of UHPC were tested....
Article
Machine learning methods are promising to predict key properties of concrete and expedite design of advanced concrete, but the existing methods have limitations in accuracy and generalization performance, because limited dataset size and anomalous data are used to train predictive models. This study presents an auto-tune learning framework for pred...
Article
This study develops a framework for property prediction and multi-objective optimization of strain-hardening cementitious composites (SHCC) based on automated machine learning. Three machine learning models are developed to predict the compressive strength, tensile strength, and ductility of SHCC. A tree-based pipeline optimization method is enhanc...
Article
Intact ultra-high-performance concrete (UHPC) can properly protect embedded steel rebar from corrosion. However, cracks initiate and propagate in UHPC beams under loading, which will facilitate the corrosion of steel rebar. In this study, UHPC beams made with different steel fiber contents (0.5 vol% and 2.0 vol%) were pre-cracked to generate differ...
Data
The dataset was developed to predict the compressive strength, flexural strength, workability, and porosity of Ultra-high-performance concrete (UHPC). The dataset has 1,228 experimental data covering 24 mix design variables of UHPC. The input variables can be grouped into four categories: (1) Category 1: variables of the cementitious systems, (2) C...
Article
To upcycle waste concrete through producing strain-hardening cementitious composites (SHCC) for sustainable and resilient structures, this research investigates the effect of fine recycled concrete powder on the fresh and hardened properties, optimizes the mixture design, evaluates the structural behavior, and assesses the life-cycle performance of...
Article
High-performance fiber-reinforced cementitious composites (HPFRCCs) feature high mechanical strengths, crack resistance, and durability. Under excessive loading, HPFRCCs demonstrate dense microcracks that are difficult to identify using existing methods. This study presents a computer vision method for identification, quantification, and visualizat...
Article
To explore the deterioration process and improvement mechanism concrete blended with supplementary cementitious materials (fly ash, slag, and silica fume) in frozen areas, the SCM content, w/b ratio, curing age, freeze-thaw (F-T) cycle, and salt-frost (S-F) cycle were varied to systematically evaluate the chloride permeability resistance and S-F re...
Article
Full-text available
Ultra-high-performance concrete (UHPC) is a type of cement-based composite for new construction and/or restoration of existing structures to extend service life. UHPC features superior workability, mechanical properties, and durability compared with conventional concrete. However, some challenges limit the wider application of UHPC, such as low wor...
Article
Full-text available
Current development of high-performance fiber-reinforced cementitious composites (HPFRCC) mainly relies on intensive experiments. The main purpose of this study is to develop a machine learning method for effective and efficient discovery and development of HPFRCC. Specifically, this research develops machine learning models to predict the mechanic...
Article
As an increasing amount of waste glass is produced every year, recycling glass in manufacturing concrete shows economic and environmental benefits. Recently, glass has been used as one of the ingredients to prepare high-performance fiber-reinforced cementitious composites (HPFRCCs), such as ultra-high-performance concrete and strain-hardening cemen...
Article
Concrete is prone to shrinkage thus induces pavement cracking at early age. In this study superabsorbent polymers (SAP) and basalt fibers are utilized in concrete for pavement to mitigate the shrinkage and cracking. The effect of different SAP meshes (particle sizes), SAP contents, absorption ratios, and fiber contents on the key properties, includ...
Article
This paper studies cyclic behaviors of joints assembled by prefabricated beams and columns made using Engineered Cementitious Composite (ECC). Five large-scale joint specimens were prepared and tested under cyclic loads until failure, including two joints made using conventional concrete and three joints made using ECC. One specimen was monolithica...
Article
To tackle the rising CO2 concentration in atmosphere, technologies of carbon sequestration are emerging. As one of these technologies, carbonation curing of cement-based composite at early age shows a great potential because its wide application and benefits to provide cement-based composite with enhanced mechanical properties and durability. Howev...
Article
The study aims to improve flexural properties of ultra-high-performance concrete (UHPC) prepared with different steel fiber volumes by controlling the rheological properties of the suspending mortar. Welan gum and high-range water reducer were incorporated to control rheology. Optimum rheological properties led to enhanced fiber distribution. Fiber...
Article
The aim of this paper is to investigate the effect of a well-dispersed graphene oxide (GO) on workability, rheological properties, hydration kinetics, density of hydration products, and compressive strength of cement paste. Paste mixtures were prepared with 0.42 water-to-cement ratio, and a well-dispersed GO was incorporated at contents of 0.04%, 0...
Article
While a large amount of waste glass is annually produced worldwide, a limited percentage of waste glass is recycled. Recycling glass in concrete has shown great promise in solid waste management because there is a high volume of concrete in civil infrastructure. However, a consensus on the effects of waste glass in concrete has not been achieved. S...
Article
Corrosion of steel bars compromises the safety and service life of reinforced concrete structures. This study develops an in-situ corrosion monitoring method for reinforced concrete with a distributed fiber optic sensor through experimentation. Reinforced concrete beams instrumented with distributed fiber optic sensors were prepared. A constant cur...
Article
Ultra-high-performance concrete (UHPC) is able to provide better protection for embedded steel rebar from corrosion due to its superior impermeability characteristics. Lightweight sand (LWS) and steel fibers are utilized in mixing UHPC to promote internal curing and improve flexural strength, respectively. But the effects of different contents of L...
Article
Ultra-high-performance concrete (UHPC) is widely accepted for its super-high durability. However, the corrosion performance of steel reinforcing bars embedded in UHPC and the improved protection of UHPC cover to steel bars are seldom studied. Furthermore, whether using steel fibers in UHPC will accelerate or slow down the corrosion of steel bars is...
Article
This paper investigates the effect of silica fume (SF), a slump-retaining polycarboxylate ether (PCE) dispersant, and their combinations, on the fresh and hardened properties of ordinary portland cement paste. The investigated properties include hydration kinetics, rheological properties (i.e., plastic viscosity and yield stress), setting time, and...
Article
This study experimentally investigates tri-axial compressive properties of high-performance fiber-reinforced cementitious composites after exposure to high temperatures up to 800 °C. First, 16 mixtures were designed and tested to evaluate the effect of mixture proportioning variables on the tri-axial compressive properties. The investigated mixture...
Article
With increasing traffic volumes, fatigue of orthotropic steel decks (OSDs) has become a critical issue in recent years. In this study, an innovative composite deck composed of large-size U-ribs, a thin ultra-high-performance concrete (UHPC) layer and headed studs is proposed to enhance the fatigue properties of OSDs. Experimental and numerical appr...
Article
Flexural behaviors of fiber-reinforced polymer fabric reinforced ultra-high-performance concrete panels, Cement and Concrete Composites (2018), Abstract 6 The use of fiber-reinforced polymer (FRP) fabrics as reinforcement in concrete offers several advantages, 7 such as high tensile strength, corrosion resistance, and light weight. This paper prese...
Article
Full-text available
This paper investigates the effects of hybrid micro-macro steel and micro steel blended with synthetic fibers and of the fiber content on key properties of a cost-effective ultrahigh-performance concrete (UHPC). Eleven mixtures are prepared using three types of fibers: micro steel straight fibers (SF), macro steel hooked-end fibers (HF), and polyvi...
Article
Full-text available
In this study, lightweight sand is utilized as an internal curing agent in ultra-high-performance concrete (UHPC). A factorial design approach was employed to evaluate the effects of multiple mix proportioning parameters that are important for mixture optimization of UHPC. The investigated mix design parameters included the substitution volume rati...
Article
This study evaluates the effects of two types of graphite nanoplatelet (GNP-C and GNP-M) and one type of carbon nanofiber (CNF) on rheological properties, hydration kinetics, autogenous shrinkage, and pore structure of ultrahigh-performance concrete (UHPC). The dispersion method was optimized to secure uniform dispersion of the nanomaterials in the...
Thesis
This study presented in this thesis aims to: (1) develop a mixture design methodology for cost-effective ultra-high-performance concrete (UHPC) incorporating high volume of supplementary cementitious materials and conventional concrete and masonry sands; (2) developed UHPC with adapted rheology incorporating lightweight sand, hybrid fibers, and nan...
Article
Full-text available
This study develops a delamination detection system for smart ultra-high-performance concrete (UHPC) overlays using a fully-distributed fiber optic sensor. Three 450 mm (length) × 200 mm (width) × 25 mm (thickness) UHPC overlays were cast over an existing 200-mm-thick concrete substrate. The initiation and propagation of delamination due to early-a...
Article
Full-text available
In this study, the feasibility of using telecommunication single-mode optical fiber (SMF-28e+) as a distributed fiber optic strain and crack sensor was evaluated in concrete pavement monitoring. Tensile tests on various sensors indicated that the SMF-28e+ fiber revealed linear elastic behavior to rupture at approximately 26 N load and 2.6% strain....
Conference Paper
Full-text available
Ballastless track slab offers excellent stability and durability and has been well accepted in high-speed railways worldwide. Rails are typically laid on precast concrete slabs that are subjected to dynamic load transferred from the rails. Cracks can be induced by shrinkage and mechanical loading in concrete, which accelerates the degradation and a...
Article
Full-text available
The use of glass fiber-reinforced polymer (GFRP) grids in reinforced concrete construction offers several advantages, such as high tensile strength and excellent corrosion resistance. This paper presents the results of experimental and numerical studies of the flexural performance of ultra-high-performance concrete (UHPC) panels reinforced with GFR...
Article
Full-text available
This study is aimed to develop a real-time safety monitoring of kilometer-long joint rails using a distributed fiber optic sensor. The sensor measures the distribution of Brillouin frequency shift along its length with pulse pre-pump Brillouin optical time domain analysis (PPP-BOTDA). The measurement distance and spatial resolution can be up to 25...
Article
Full-text available
In this study, a new method to measure strain distribution and detect cracking with pulse pre-pump Brillouin optical time domain analysis (PPP-BOTDA) is proposed. A mortar cylinder was cast in a corrugated polyethylene mold with two end plugs and tested according to ASTM C1698 for autogenous shrinkage. It was instrumented with two sensors made of a...

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Projects

Projects (5)
Archived project
Improvement of the mechanical performance and sustainability of bridges through experimental, numerical, and theoretical investigations. Multi-hazard mitigation of bridges subjected to natural and man-made hazards.
Project
Design of cost-effective UPC for various structural applications, including SIF