Surendra P. Shah

Surendra P. Shah
University of Texas at Arlington | UTA · Department of Civil Engineering

Doctor of Philosophy

About

682
Publications
152,828
Reads
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36,759
Citations
Citations since 2016
92 Research Items
19122 Citations
201620172018201920202021202205001,0001,5002,0002,5003,000
201620172018201920202021202205001,0001,5002,0002,5003,000
201620172018201920202021202205001,0001,5002,0002,5003,000
201620172018201920202021202205001,0001,5002,0002,5003,000
Additional affiliations
June 1990 - June 2010
Northwestern University
Position
  • Managing Director
Description
  • ACBM was a National Science Foundation and Industrial Consortia funded Science and Technology Center.
September 1981 - present
Northwestern University
Position
  • Walter P.Murphy Professor of Civil Engineering
Description
  • currenly working on nano modificationn, nano scale characterization, rheology, self consolidating concrete, concrete reinforced withCNT and graphene,

Publications

Publications (682)
Article
Full-text available
Graphene oxide is emerging as a promising nanomaterial owing to its unique property of being a strong and flexible material. This work examines the potential use of graphene oxide (GO) for CO2 sequestration in cementitious-based materials in addition to mechanical properties. The effect of oxidized graphene surface on the hydration mechanism of cem...
Article
Full-text available
To explore the effect of nano-attapulgite clay (NAC) on the durability of concrete, two kinds of NAC (calcined raw ore and calcined high viscosity ore: calcination at 650 °C for 2 h) were used to study their effects on the durability of concrete, mainly discussing the changes of chloride ion permeability and the resistivity of concrete with NAC. Th...
Article
The article studied the stress-sensitivity of carbon nanotube-grafted-carbon fiber incorporated cement-based composites under temperature and humidity, and further investigated the piezoresistive stability of cement embedded in the concrete as a sensor. This study employed hydrothermal synthesis to graft carbon nanotubes (CNTs) onto the surface of...
Article
To develop smart concrete pavement for intelligent infrastructure, the self-sensing performance of smart pavement with embedded cement-based sensors was experimentally investigated in this study. The self-sensing behaviors of mortar pavement is evaluated by the self-sensing of compression force, human motion detection, and vehicle speed monitoring....
Article
Full-text available
In this paper,different types and particle sizes of nanoclay(nano-metakaolin—NMK—and nano-attapulgite—NMA—clay) were selected to study the effect of nanoclay on the properties of cement-based cementitious materials. The stability of different nanoclay dispersions wasanalyzed. The effects of nanoclay on the mechanical properties and cracking behavio...
Article
Full-text available
To improve the ability of concrete structures to resist freeze-thaw damage in cold environments, explore the effect and mechanism of nano-metakaolin (NMK) on frost resistance of concrete. And make up for the deficiencies in the mechanical properties and deformation process of na-no-metakaolin concrete in freeze-thaw environments. Rapid freeze-thaw...
Article
Aggressive substances can gain access to the inner structure of cement-based materials through the surface, resulting in deterioration of the structure. This work developed an effective way of improving the quality of cement-based materials surface by applying nanoSiO2-/nanoTiO2-engineered releasing agents (nSRa/nTRa) on the formwork surface. Conti...
Article
In this study, the PeakForce quantitative Nanoscale Mechanical Characterization (PF-QNM) mode was used to explore the micro-zone mechanical properties of the interfacial transition zone (ITZ) in carbon nanofiber (CNF)-reinforced cement mortar. It was found that adding CNFs increased the Young’s modulus of neat cement paste and cement mortar specime...
Article
Full-text available
The lamellar structure of graphene oxide and the filling effect of nano-cerium oxide particles together provide a good barrier and stability to coating. In this paper, cerium oxide-graphene oxide (4:1) nanocomposite was prepared by the hydrothermal synthesis method. The effect of cerium oxide–graphene oxide (4:1) nanocomposite on the anticorrosion...
Article
Full-text available
Adding mineral admixture is one of the leading technical ways to improve the durability of cement-based materials. Nano attapulgite clay (NAC) is a unique fiber rod crystal structure that can change the physical and mechanical properties of cement-based materials, and opens up a new idea for exploring the durability of high-performance cement-based...
Article
This paper discusses the different modifying mechanisms of carbon nanofiber (CNF) on the geopolymers with different calcium contents. First, the rheological and mechanical properties of CNF modified geopolymers with low and high-calcium content are measured. Results show that the modifying effect on rheological properties is more obvious on high-ca...
Article
This study aims to develop multifunctionality of cementitious composites with the integrated self-sensing and self-healing capacities by incorporating conductive carbon black (CB) with CB-encapsulated slaked lime (SL). The microsized SL particles were premixed with a half of designed content of nanosized CB particles. When CB agglomerations coat ar...
Article
Full-text available
In the marine service environment, metal materials have a serious risk of corrosion. The corrosion rate of metal materials will be accelerated by the dual action of temperature change and alkali salt in saline-alkali environment. In order to delay the metal materials’ corrosion rate and prolong their service life, this paper used a CeO2–GO (4:1) na...
Article
Two-dimension graphene-based nanomaterials (GBNs), such as multi-layers graphene (GNPs) and graphene oxide (GOs) have been extensively applied to enhance the mechanical properties, durability, and self-sensing performance of construction materials. Although there are some reviews on the mechanical properties and durability of graphene-based cementi...
Article
Micro- and nano-sized SiO2 particles, i.e., silica fume (SF) and nanosilica (NS) have been extensively documented of improving the durability of concrete, but rare investigation on their specific effects on tri-calcium aluminate (3CaO·Al2O3, C3A) reactions/performances in harsh environment has been reported. This work determined the effects of SF a...
Article
Carbon nanomaterials have been extensively applied for smart cementitious composites to gain multifunctionalities (e.g. self-sensing, self-healing, self-heating, and electromagnetic interference shielding). This paper critically reviewed dispersion and percolation of 0 dimension (0D), 1 dimension (1D) and 2 dimensions (2D) carbon materials used in...
Article
Cement-based concrete is the most used construction material in the world, ubiquitous in most of the infrastructures. Concrete infrastructure, however, is at the risk of premature failure when the degradation of concrete compromises their serviceability and reliability. The risk stems from complex interactions between concrete and the service envir...
Article
The heterogeneity of interfacial transition zones (ITZs) is a key factor for the properties and failure mechanism of geopolymer concrete. The nano/microscale properties and heterogeneity of the ITZs (the top, bottom and lateral interfaces) prepared by encompassing polished aggregates in the modelled fly ash-based geopolymer concrete are statistical...
Article
Building construction deserves many attentions due to its huge energy consumption, while Phase Change Materials (PCMs) provide positive solutions for improving energy efficiency and enhancing the thermal properties of construction materials. However, PCMs also present some negative impacts, such as weakening mechanical properties and increasing cos...
Article
Full-text available
The Bi2S3-modified ZnO nanowires (Bi2S3/ZnO) were prepared by the electrochemistry deposition and successive ionic layer adsorption and reaction and their photoelectrochemical cathodic protection performance was explored. Compared with that of pristine ZnO, the photo-response of the Bi2S3/ZnO heterostructure thin-film red shifted to the visible lig...
Article
To develop high deterioration resistance concrete for marine infrastructures, two types of nano TiO2 (NT) including anatase phase NT and silica surface-treated rutile phase NT were incorporated into concrete. The fabricated NT modified concrete was then put into the marine environment for 21 months in this study. The effects and mechanisms of two t...
Article
Hydrotalcite materials, also known as layered double hydroxides (LDHs), have strong ion exchange properties, and are widely used in the field of reinforced concrete corrosion protection. LDHs can improve the compactness and mechanical properties of concrete through physical and chemical effects, combined with its ion exchange performance, and joint...
Article
This paper provides an overview of the use of nanoclays in cement-based materials. The effect of nanoclays on shear rheological properties will be discussed, with a focus on structural build-up behavior. This macroscale flow behavior will then be tied to the effect of nanoclays on the fresh microstructure as characterized via in-situ particle size...
Chapter
In this study, polypropylene (PP) was added to develop carbon black (CB)/cementitious composites as cement-based sensors. The mechanical properties and piezoresistivity were been experimentally investigated. The compressive strength slightly decreased, while the flexural strength was significantly increased with the increased amount of PP fibres. T...
Article
Interfacial transition zones (ITZs) of cementitious composites are highly heterogeneous, which caused many challenges in accurately obtaining their properties. In this study, regular aggregates were applied to prepare modelled geopolymer composites, in which ITZs exhibited neat boundaries. Nanoscratch technique with the ability to quickly scan a lo...
Article
The aim of this study is to improve the physical and mechanical properties of cement-based materials by adding nanometakaolinite clay (NKC). The results show the mechanism by which NKC modifies cement-based materials at the microscale level. A comparative experimental analysis of micromorphology and pore structure of cement specimens with NKC prepa...
Article
This paper aims to compare the properties of interfacial transition zones (ITZs) in Portland cement (PC) concrete and geopolymer concrete. Portland cement and geopolymer pastes were designed with the equivalent flowability to provide similar mix and casting condition of ITZs. Two types of modelled ITZs were prepared to facilitate the nanoindentatio...
Article
In this study, multifunctional cementitious composites with integrated self-sensing and hydrophobicity abilities were firstly developed and investigated using conductive graphene nanoplate (GNP) and silane hydrophobic powder (SHP). The mechanical properties, permeability, water contact angle, microstructure, and piezoresistivity were studied and co...
Article
The quest for high-performance construction materials is led by the development and application of new reinforcement materials for cement composites. Concrete reinforcement with fibers has a long history. Nowadays, many new fibers associated with high performance and possessing eco-environmental characteristics, such as basalt fibers and plant fibe...
Article
Graphene nanoplate (GNP) and graphite plate (GP) are promising functional nanofillers for smart self-sensing cementitious composites. The effects of GNP and GP on physicochemical, mechanical and piezoresistive properties of cementitious composite were investigated in this paper. The results show that cement hydration was accelerated with the increa...
Article
Nanosilica-geopolymer composites with different dispersion levels of nanoparticles were investigated on the physical properties and gel properties. The results indicated that compared with the nanosilica-geopolymer composites without ultrasonic dispersion, the 20 and 120 min of sonication brought 3.88% and 13.59% of additional strength enhancement,...
Article
Effects of nanosilica (NS) on improving physicochemical property of cement is greatly dependent on its dispersion. This research aims to study the influences of mixing sequences of raw materials on the dispersion of NS and the properties of cement-based materials. Particle size distribution, hydration heat, setting time and compressive strength wer...
Article
Static nanoindentation and Maximum Likelihood Estimation (MLE) were applied for the nano/micromechanical properties investigation of alkali-activated fly ash (AAFA) in this study. Some critical issues of statistical nanoindentation were fully discussed, including properties of pure gel phase, influence of bin size when using least-square estimation...
Article
The crack closure and self-healing efficiency of smart self-healing cementitious composite can effectively reveal the mechanism of self-healing performance recovery. This study focused on effects of crack healing on crack closure and mechanical performance recovery of crack-healed cementitious composite, including flexural compressive behaviours. M...
Article
Piezoresistivity of carbon nanotube/cementitious composites has been widely investigated, but the piezoresistive performance had been rarely studied when exposed to elevated temperatures. In this study, the physicochemical and mechanical properties, and piezoresistive behaviours of multi-walled carbon nanotube (MWCNT) reinforced smart cementitious...
Article
As an important inorganic material, geopolymer has been widely used for ceramics and green cement in concrete. Sodium aluminosilicate hydrate (N-A-S-H) known as the zeolite precursor gel has the most critical impact on the overall performance of geopolymer. The nano/micromechanical properties of N-A-S-H have been investigated in several studies, bu...
Article
In this paper, C3A‐gypsum and C3A‐C3S‐gypsum model cement systems with and without nanosilica were studied. The effects of nanosilica on the early stage cement hydration, particularly C3A hydration, were assessed through the heat of hydration (isothermal calorimetry), phase assemblage (QXRD), zeta potential, ion concentration measurements and morph...
Article
In this study, different dosages of carbon black (CB) and polypropylene (PP) were added to manufacture functional cementitious composite. The results show that electrical conductivity increased with the amount of PP fibres, due to enclosed CB nanoparticles and more conductive passages. Compressive strength slightly decreased, while the flexural str...
Article
Fresh concrete is a concentrated suspension of Portland cement and aggregates. Cement-based materials show a fluid-to-solid transition incorporating water, which allows us to cast and place a structure in field. Ease of construction requires a lower viscosity of cement-based materials, and it could be achieved by cement particle dispersion in water...
Article
There are crack interfaces between self-healing agent and cement matrix in smart encapsulation-based self-healing concrete, whose mechanical properties significantly affects the load capacity recovery of crack-healed concrete. In this study, both experimental and numerical investigations were conducted on the crack-healed concrete under uniaxial te...
Article
The cement-based sensors have great potential for structural health monitoring, especially low-cost sensors filled with nano-carbon black (NCB) particles. To improve the sensing efficiency of NCB filled cementitious composite, polypropylene (PP) fibres were premixed with NCB in the cement-based sensor. Although the compressive strength was slightly...
Article
The effects of a range of carbon nanotube (CNT) additions (0.1–0.5% by weight of cement) on the early hydration processes (0–24h) of cementitious composites were investigated by isothermal calorimetry, Fourier transform infrared spectroscopy (FTIR), X-Ray powder diffraction (XRD) analysis and scanning electron microscope (SEM) observation. The addi...
Article
Full-text available
In this paper, the hydration process of Portland cement at early age was characterised by Fourier transform infrared spectroscopy (FTIR); the results showed that FTIR is a simple and rapid research method in operation, which can reflect the basic variation in the primary cement hydration products. As the hydration reaction proceeded, the peak value...
Article
Full-text available
In this paper, the cement paste and the mortar were tested using the PF-QNM technique. It is shown that the PF-QNM technique is very powerful to characterize the mechanical properties of micro- and nanostructures in the cement-based materials. It does not have strict requirements for test environment and it does not damage the surface of the materi...
Article
New tall building designs require higher modulus of concrete that allows to limit lateral deformations and decrease the size of structural elements. The modulus of conventional and high-strength concrete can dramatically improve with the addition of very low amounts of effectively dispersed CNTs and CNFs and without the need of optimizing the mixtu...
Article
Carbon nanofibers (CNFs) has become one of the most promising nanomaterials as an additive to cementitious composites, due to the improvements that can be seen in mechanical, electrical and thermal properties. Mechanical characterization has been conducted with cement paste, mortar and concrete with 0.1 wt% well-dispersed CNFs, and the modulus of e...
Article
Influence of colloidal silica sol (SS) consisting of mono-dispersed nano-silica on properties and microstructure of the hardened cement-based materials was investigated as compared to the nano-silica (NS) powder with agglomerates in micron-scale through detecting the mechanical and durable properties of the hardened mortar and by using SEM observat...
Article
The modification effects of nanosilica, a widely used nanomaterial, on the cement grain/C–S–H gel interface of cement-based material at early ages are investigated. The mechanical properties, morphology, and chemical composition of the interface at nano-size are explored by quantitative modulus mapping based on scanning probe microscopy (SPM) and t...
Article
As a very promising sustainable construction material, recycled aggregate concrete (RAC) has become a hot research topic and attracted wide attention. Although many investigations have been conducted, it is still a great challenge to product RAC with satisfactory and stable performance for practical engineering application. In recent years, nanotec...
Article
The homogeneous dispersion of carbon nanotubes, (CNTs), in a cementitious matrix is a crucial procedure that affects both mechanical properties and electrical conductivity of the nanocomposite. Electrochemical Impedance Spectroscopy, (EIS), can be very useful in studying and characterizing the impact of the CNT content in nanoreinforced cementitiou...
Article
Full-text available
Workability of concrete varies during pumping. Even though concrete satisfies the required workability before pumping, it often does not satisfy the required standard after pumping. Moreover, serious problem could happen such as segregation and blockage. In this study, the rheological properties of concrete change during pumping from the pressure d...
Article
The addition of carbon nanofibers (CNF) has the potential to have a major impact in the concrete materials industry due to the high modulus and specific surface area of CNF. Past research has focused on characterization of the mechanical and flexural strength behavior of CNF-modified cement-based materials. In this study, the influence of CNF on th...
Chapter
Composite materials such as Fiber Reinforced Cement or Concrete (FRC) are designed to prevent brittle fracture. FRC is characterized by enhanced ductility and distributed crack formation prior to failure. Mitigation of progressive crack propagation and localization of cracks and stresses are result of the even distribution of fibers throughout the...
Article
Identifying the properties of the region where the cement paste meets the aggregate surface (interfacial transition zone, ITZ) is critical to understanding the strength and fracture behavior of carbon nanofiber (CNF) reinforced cement concrete. In this study, the finite element method is employed to investigate the effect of the ITZ on the Young's...
Article
This study investigated the impact behaviors of recycled aggregate concrete-filled steel tube (RACFST) after exposed to elevated temperatures by experimental and numerical studies. The impact test on RACFST was conducted by a split Hopkinson pressure bar (SHPB) with 100 mm-diameter. After the validation of finite element method simulation by the ex...
Article
A silica-based hybrid nanocomposite, SiO2/polymethylhydrosiloxane (SiO2/PMHS), is synthesized by a sol-gel process and used for surface treatment of hardened cement-based materials. The advantages of both normal organic and inorganic silica-based treatment agents are explored. Results revealed a covalent chemical bonding of SiO2 and PMHS and the Si...
Article
In this study, three modelling experiments were designed to investigate whether nano-particles incorporated in the cement paste act as nucleation sites for C–S–H gel growth during cement hydration. The nano-particles with (nano-SiO2) and without (nano-TiO2) pozzolanic reactivity were used. In the first experiment, both the cement and nano-particles...
Article
Full-text available
The modification effects of nanoSiO2 on properties of the interface region between cement grain and C- S- H gel in cement-based composites are investigated by means of the nanoscratch technique. The nanoscratch test involves driving a Berkovich diamond tip across the interface boundary perpendicularly and recording the lateral force while the norma...
Article
The compressive mechanical behaviors of recycled aggregate concrete-filled steel tube (RACFST) stub columns after exposure to elevated temperatures were experimentally investigated in this study. The RACFST stub columns incorporating different recycled coarse aggregate (RCA) replacement ratios of 0, 50% and 100% were heated under elevated temperatu...
Article
In this study, the influence of the addition of carbon nanotubes (CNTs) and nanofibers (CNFs) and their dispersion on the corrosion behavior, bulk electrical resistivity and mechanical properties of nanomodified Portland cement mortars was investigated. The experimental determination of the mechanical properties of nanocomposites reinforced with CN...
Article
The size of magnesium oxide may greatly affect its behaviour in cement-based materials (CBMs), and this has not been fully investigated. The reactivity of ultrafine magnesium oxide (UFM) of size 40 nm to 20 μm was assessed, and its effects on the compressive strength and volume stability of cement mortar were investigated. The results showed that t...