Cement and Concrete Composites

Items from 1 to 20 out of 25 results

article

Early carbonation curing of concrete masonry units with Portland limestone cement

Hilal El-Hassan, Yixin Shao

Cement and Concrete Composites > 2015 > 62 > Complete > 168-177

The effect of carbonation curing on the mechanical properties and microstructure of concrete masonry units (CMU) with Portland limestone cement (PLC) as binder was examined. Slab samples, representing the web of a CMU, were initially cured at 25°C and 50% relative humidity for durations up to 18h. Carbonation was then carried out for 4h in a chamber at a pressure of 0.1MPa. Based on Portland limestone...

article

Energy dissipation capacity of fibre reinforced concrete under biaxial tension–compression load. Part I: Test equipment and work of fracture

Elmar K. Tschegg, Andreas Schneemayer, Ildiko Merta, Klaus A. Rieder

Cement and Concrete Composites > 2015 > 62 > Complete > 195-203

The objective of this research was to analyse the differences in the dissipated energy under uniaxial tension and biaxial tension–compression load of fibre reinforced concretes using the Wedge Splitting Test. Under biaxial load the specimens were subjected to compressive stress ratios from 10% to 50% of the concrete compressive strength perpendicular to the direction of the tensile load.Under biaxial...

article

Properties of SCC prepared using natural pozzolana and industrial wastes as mineral fillers

Saheed Adekunle, Shamsad Ahmad, Mohammed Maslehuddin, Husain Jubran Al-Gahtani

Cement and Concrete Composites > 2015 > 62 > Complete > 125-133

The high unit cost of self-consolidating concrete (SCC) resulting from the use of conventional filler materials, such as fly ash or silica fume, has been identified as the main hindrance to its widespread use particularly at places where these materials are not available locally. To achieve economy in the production of SCC, it is highly desirable to explore possibility of using alternative materials...

article

Pozzolanic hardened three-phase-foams

Christina Krämer, Torsten L. Kowald, Reinhard H.F. Trettin

Cement and Concrete Composites > 2015 > 62 > Complete > 44-51

The field of lightweight materials is becoming more and more important due to the desire for material and cost savings with a simultaneous combination of thermal insulation and sustainability. It is of specific interest to obtain materials in a low density range of 60–150kg/m³ with high stability comparable to heavier weight materials currently in use, whilst under the constraint of reducing the content...

article

Using aggregate flowability testing to predict lightweight self-consolidating concrete plastic properties

H. Toutanji, C. Goff, K. Pierce, H. Fares

Cement and Concrete Composites > 2015 > 62 > Complete > 59-66

This paper presents the results of an experimental study on the flow properties of lightweight self-consolidating concrete (LWSCC) which utilizes a new test relating aggregate flow to concrete flow. Three types of LWSCC were tested containing differing proportions of lightweight and normal weight, coarse and fine aggregates, as well as a normal weight self-consolidating concrete (NWSCC) as a control...

article

Properties of cold bonded quarry dust coarse aggregates and its use in concrete

Job Thomas, B. Harilal

Cement and Concrete Composites > 2015 > 62 > Complete > 67-75

In this study, artificial coarse aggregates are prepared by a cold bonding technique. The waste materials, namely, fly ash and quarry dust, are used for the preparation of the cold bonded artificial aggregate. Portland cement is used as the binder material. The independent variables considered for the preparation of the artificial aggregate are cement and fly ash contents. The properties of the artificial...

article

Influence of fired clay brick waste additions on the durability of mortars

A. Schackow, D. Stringari, L. Senff, S.L. Correia, more

Cement and Concrete Composites > 2015 > 62 > Complete > 82-89

The use of metakaolin is known to help improve properties of Portland cement-based mortars. The presumed similarities between the characteristics of metakaolin and those of a powdered (<45μm) fired clay brick clean waste (CBW) led to the investigation of the effect on the durability of mortars of partial replacement (10, 25 and 40wt.%) of Portland cement by CBW. Properties such as 28 and 90days-compressive...

article

Carbonation behaviour of recycled aggregate concrete

R.V. Silva, R. Neves, J. de Brito, R.K. Dhir

Cement and Concrete Composites > 2015 > 62 > Complete > 22-32

This paper reviews the effect of incorporating recycled aggregates, sourced from construction and demolition waste, on the carbonation behaviour of concrete. It identifies various influencing aspects related to the use of recycled aggregates, such as replacement level, size and origin, as well as the influence of curing conditions, use of chemical admixtures and additions, on carbonation over a long...

article

Image analysis applications on assessing static stability and flowability of self-consolidating concrete

Xuhao Wang, Kejin Wang, Jianguo Han, Peter Taylor

Cement and Concrete Composites > 2015 > 62 > Complete > 156-167

A digital image processing (DIP) method associated with a MATLAB algorithm is used to evaluate cross sectional images of self-consolidating concrete (SCC). Two new parameters, such as inter-particle spacing of coarse aggregate and average mortar-to-coarse aggregate ratio, defined as average mortar thickness index (MTI), were proposed to quantitatively evaluate the static stability of SCC. Statistical...

article

Shrinkage performance of Crumb Rubber Concrete (CRC) prepared by water-soaking treatment method for rigid pavements

Iman Mohammadi, Hadi Khabbaz

Cement and Concrete Composites > 2015 > 62 > Complete > 106-116

This investigation deals with the shrinkage properties of rubberised concrete pavement. Arrays of concrete samples were prepared with different water–cement ratios and rubber content. The experimental results revealed that the introduction of rubber into concrete mixes results in the control of shrinkage cracks if the optimised content of rubber is selected. Accordingly, the optimised rubber content...

article

IFC - Editorial board

Cement and Concrete Composites > 2015 > 62 > Complete > IFC

article

Energy dissipation capacity of fibre reinforced concrete under biaxial tension–compression load. Part II: Determination of the fracture process zone with the acoustic emission technique

Elmar K. Tschegg, Andreas Schneemayer, Ildiko Merta, Klaus A. Rieder

Cement and Concrete Composites > 2015 > 62 > Complete > 187-194

Part I of this paper showed that under biaxial tension–compression load the energy dissipation capacity of fibre reinforced concretes (FRC) is up to 30% lower than under uniaxial tension load. In this part, the extent of the fracture process zone (FPZ) was studied with the acoustic emission technique and the decrease of the energy dissipation will be explained.It was found that plain concrete specimens...

article

Effects of nano-kaolinite clay on the freeze–thaw resistance of concrete

Yingfang Fan, Shiyi Zhang, Qi Wang, Surendra P. Shah

Cement and Concrete Composites > 2015 > 62 > Complete > 1-12

This paper investigates the effects of nano-kaolinite clay (NKC) on the freezing and thawing (F–T) behavior of concrete. In our experiments, we substituted NKC for 0%, 1%, 3%, and 5% of mixtures of ordinary Portland, cement, by weight. The blended concrete was prepared using w/c ratio as 0.5. A rapid freeze–thaw Cabinet was then used to measure the resistance of ordinary Portland cement concrete,...

article

Effect of sulfur on the ion concentration of pore solution and the hydration of calcium aluminate cement

Yefan Zhang, Nan Li, Wen Yan

Cement and Concrete Composites > 2015 > 62 > Complete > 76-81

The ion concentration, PH value of pore solution and the hydration of two low iron calcium aluminate cements based on bauxite (BCACs) with different sulfur content were investigated by XRD, ICP-OES, PH meter and SEM. The results indicate that the sulfur in the bauxite and coal results in the formation of ye’elimite (C₄A₃Š) in BCAC. The more the sulfur content in BCAC the more the C₄A₃Š formed. The...

article

Thermal behaviour of autoclaved aerated concrete exposed to fire

K. Ghazi Wakili, E. Hugi, L. Karvonen, P. Schnewlin, more

Cement and Concrete Composites > 2015 > 62 > Complete > 52-58

The reaction to fire of autoclaved aerated concrete (AAC) has been investigated at multiple dimensional scales. Changes in the chemical composition were detected and analysed by means of thermal analysis methods. Then, the thermal conductivity after different heat treatments was measured at different temperatures ranging from 120°C to 720°C. Finally, the evolution of temperature in an AAC wall exposed...

article

Cement substitution by organoclay – The role of organoclay type

Regina Kalpokaitė-Dičkuvienė, Irena Lukošiūtė, Jūratė Čėsnienė, Kristina Brinkienė, more

Cement and Concrete Composites > 2015 > 62 > Complete > 90-96

In this paper three organically modified clays (OC) with different functional group of modifier and basal spacing (d₀₀₁) but approximately the same alkyl chain length were considered in order to identify which parameter of OC is the most characteristic for the selection of appropriate OC for cement substitution. Compressive strength and water absorption changes in hardened cement paste due to partial...

article

Experimental and numerical characterization of the bond behavior of steel fibers recovered from waste tires embedded in cementitious matrices

Antonio Caggiano, Hernan Xargay, Paula Folino, Enzo Martinelli

Cement and Concrete Composites > 2015 > 62 > Complete > 146-155

This work investigates the mechanical behavior of recycled steel fibers recovered from waste tires and, then, suitable to produce eco-friendly fiber-reinforced concrete. Particularly, the results of an experimental investigation aimed at understanding the tensile response of the aforementioned steel fibers and their bond behavior when embedded in cementitious matrices are reported and discussed. Moreover,...

article

Influence of parameters on surface resistivity of concrete

Pratanu Ghosh, Quang Tran

Cement and Concrete Composites > 2015 > 62 > Complete > 134-145

Several studies have investigated different techniques for measuring electrical properties of concrete which is an important physical property related to chloride induced corrosion in reinforced concrete structures. This research examined the surface resistivity (SR) and the bulk electrical resistivity (BR) of concrete cylinders for several ternary mixtures at different testing ages. In addition,...

article

Contribution of limestone to the hydration of calcium sulfoaluminate cement

Lukas H.J. Martin, Frank Winnefeld, Christian J. Müller, Barbara Lothenbach

Cement and Concrete Composites > 2015 > 62 > Complete > 204-211

Calcium sulfoaluminate (CSA) cements can be blended with mineral additions such as limestone for properties and cost optimization. This study investigates the contribution of limestone to the hydration of a commercial CSA clinker regarding the hydration kinetics, hydrate assemblage and compressive strength. Nine formulations were defined at M-values of 0, 1.1 and 2.1 (M=molar ratio of anhydrite to...

article

Chloride and CO2 transport in cement paste containing red mud

Belén Díaz, Lorena Freire, X. Ramón Nóvoa, M. Consuelo Pérez

Cement and Concrete Composites > 2015 > 62 > Complete > 178-186

Red mud, RM, is the main residue generated in the Bayer process for obtaining alumina. This paper gives an assessment on the penetration rate of aggressive substances such as chlorides and CO₂ through RM incorporated cement paste. Diffusivity values are significantly reduced in presence of a low RM content, which could contribute to an increase in the service life of the reinforcements. A study based...

Volume:
62
Year:
2015

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Complete (25)

Keywords

CARBONATION (4)
COMPRESSIVE STRENGTH (4)
CEMENT (3)
CONCRETE (3)
DURABILITY (3)
POZZOLAN (3)
BIAXIAL TENSION–COMPRESSION LOAD (2)
CURING (2)
DISSIPATED ENERGY (2)
FIBRE REINFORCED CONCRETE (2)
HYDRATION (2)
MORTAR (2)
SELF-CONSOLIDATING CONCRETE (2)
WEDGE SPLITTING TEST (2)
ACCELERATED TESTING (1)
ACOUSTIC ABSORPTION (1)
ACOUSTIC EMISSION TECHNIQUE (1)
ALKALI ACTIVATED CEMENT (1)
ARTIFICIAL AGGREGATE (1)
AUTOCLAVED AERATED CONCRETE (1)
BLEEDING OF RUBBERISED CONCRETE (1)
BOND MODELING (1)
CALCIUM ALUMINATE CEMENT (1)
CALCIUM SULFOALUMINATE CEMENT (1)
CALORIMETRY (1)
CELLULOSE ETHERS (1)
CHLORIDE DIFFUSION (1)
CHLORIDE PERMEABILITY (1)
CLAY BRICK WASTE (1)
CMU (1)
CO2 UPTAKE (1)
COMPOSITES (1)
CONSTRUCTION AND DEMOLITION WASTE (1)
CRUMB RUBBER CONCRETE (CRC) (1)
DEHYDRATION (1)
DIELECTRIC PROPERTIES (1)
DIGITAL IMAGE ANALYSIS (1)
DURABILITY CHARACTERISTICS (1)
EFFECTIVE HEAT CAPACITY (1)
ELECTRICAL RESISTIVITY (1)
ENTRAINED AIR (1)
EXPERIMENTAL CHARACTERIZATION (1)
FIRE (1)
FLOW (1)
FLOWABILITY (1)
FLY ASH (1)
FOAM CONCRETE (1)
FOAM STABILITY (1)
FRACTURE MECHANICS (1)
FRC (1)
FREEZE–THAW (1)
GEL PORES (1)
GEOMETRIC ADJUSTMENT FACTOR (1)
GEOPOLYMER (1)
GREEN CONCRETE (1)
HPC (1)
HYDRATES (1)
HYDRAULIC LIME-CONCRETE (1)
IMAGE ANALYSIS (1)
IMPLEMENTATION (1)
INORGANIC FOAMS (1)
ION CONCENTRATION (1)
LIGHTWEIGHT AGGREGATE (1)
LIMESTONE (1)
LIMESTONE POWDER (1)
MECHANICAL PROPERTIES (1)
METAKAOLIN (1)
MICROSTRUCTURE (1)
MIX DESIGN (1)
NANO-KAOLINITE CLAY (1)
NANOPARTICLES (1)
NATURAL EXPOSURE (1)
NATURAL POZZOLANA (1)
NITROGEN SORPTION (1)
ORGANOCLAY (1)
PHOSPHATE CEMENTS (1)
PLASTIC AND DRYING SHRINKAGE (1)
PLASTIC STATE (1)
PLC (1)
PORE SIZE DISTRIBUTION (1)
PORES (1)
PORES AGGLOMERATION (1)
POROSIMETRY (1)
POZZOLANIC REACTION (1)
PROBE SPACING (1)
PULL-OUT (1)
QUARRY DUST (1)
RECYCLED AGGREGATES (1)
RECYCLED STEEL FIBERS (1)
RED MUD (1)
RELATIVE DYNAMIC MODULUS OF ELASTICITY (1)
RHEOLOGY (1)
RIGID PAVEMENTS (1)
RUBBER TREATMENT METHODS (1)
SCM (1)
SELF-CONSOLIDATING CONCRETE (SCC) (1)
SERVICE LIFE DESIGN (1)
SHRINKAGE OF RUBBERISED CONCRETE (1)
SLUMP (1)
SLUMP LOSS (1)
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INFONA - science communication portal

Cement and Concrete Composites

Early carbonation curing of concrete masonry units with Portland limestone cement

Energy dissipation capacity of fibre reinforced concrete under biaxial tension–compression load. Part I: Test equipment and work of fracture

Properties of SCC prepared using natural pozzolana and industrial wastes as mineral fillers

Pozzolanic hardened three-phase-foams

Using aggregate flowability testing to predict lightweight self-consolidating concrete plastic properties

Properties of cold bonded quarry dust coarse aggregates and its use in concrete

Influence of fired clay brick waste additions on the durability of mortars

Carbonation behaviour of recycled aggregate concrete

Image analysis applications on assessing static stability and flowability of self-consolidating concrete

Shrinkage performance of Crumb Rubber Concrete (CRC) prepared by water-soaking treatment method for rigid pavements

IFC - Editorial board

Energy dissipation capacity of fibre reinforced concrete under biaxial tension–compression load. Part II: Determination of the fracture process zone with the acoustic emission technique

Effects of nano-kaolinite clay on the freeze–thaw resistance of concrete

Effect of sulfur on the ion concentration of pore solution and the hydration of calcium aluminate cement

Thermal behaviour of autoclaved aerated concrete exposed to fire

Cement substitution by organoclay – The role of organoclay type

Experimental and numerical characterization of the bond behavior of steel fibers recovered from waste tires embedded in cementitious matrices

Influence of parameters on surface resistivity of concrete

Contribution of limestone to the hydration of calcium sulfoaluminate cement

Chloride and CO2 transport in cement paste containing red mud

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