Construction and Building Materials articles from March 2008

Construction and Building Materials archives from March 2008

Properties evaluation of asphalt-based composites with graphite and mine powders.
March 1, 2008... Abstract On account of the high specific surface area, graphite powder could transform more free asphalt to structure asphalt, so the softening temperature of asphalt-based composites (containing mineral powder) was increased from 45...

Study on strength and corrosion performance for steel embedded in metakaolin blended concrete/mortar.
March 1, 2008... Abstract It is an undeniable fact that concrete is the most widely used man-made construction material in the world today, and will remain so for decades to come. The popularity of concrete is largely due to the abundance of raw material,...

Strength properties of volcanic slag aggregate lightweight concrete for high performance masonry units.
March 1, 2008... Abstract The production of lightweight masonry block is in most countries a highly mechanised industry based on great automation and accuracy. This production has to match strict standards that describe properties specified for the...

Steel plate contribution to load-carrying capacity of retrofitted RC beams.
March 1, 2008... Abstract Experiments for flexural strengthening of rectangular reinforced concrete (RC) beams using epoxy-bonded continuous horizontal steel plates have been carried out. Seven reference beams have been loaded monotonically up to maximum...

Adhesion characterization of tungsten mine waste geopolymeric binder. Influence of OPC concrete substrate surface treatment.(ordinary portland cement )
March 1, 2008... Abstract Tungsten mine waste mud (TMWM) was investigated for its potential use as repair material of ordinary portland cement (OPC) concrete. Bond strength between OPC concrete substrate and three repair materials was analysed. TMWM...

Evaluation of high-early strength PCC mixtures used in full depth repairs.
March 1, 2008... Abstract The research described herein was conducted as a part of NCHRP Project 18-04B, Early Opening-to-Traffic Portland Cement Concrete for Pavement Rehabilitation [Van Dam TJ. Durability of 'Early-Opening-to-Traffic' portland cement...

Analytical models for shear-displacement curves of unreinforced and FRP reinforced masonry panels.(fibre reinforced polymers )
March 1, 2008... Abstract Starting from the 1980s, several computational techniques for the solution of the masonry response problem have been proposed, but due to the intrinsic complexity of real structures, they are of little significance for practical...

Longterm corrosion performance of rebar embedded in blended cement concrete under macro cell corrosion condition.
March 1, 2008... Abstract The concrete does not possess sufficient resistance towards the permeation of aggressive ions when it is exposed to marine environment. When mineral admixtures are added, they impart certain impermeability to concrete by improving...

Influence of the geometry and the abutments movement on the collapse of stone arch bridges.
March 1, 2008... Abstract The ultimate failure load of stone arch bridges is calculated in this paper. The finite element model consists of contact interfaces which simulate potential cracks. A parametric investigation demonstrates the influence of the...

Stains in facades' rendering--Diagnosis and maintenance techniques' classification.
March 1, 2008... Abstract Stains in rendered facades occur very frequently in recent buildings due to various causes (efflorescence, carbonation, corrosion, cracking, dirt deposition, biological colonization and others). Most of the stains are damaging. In...

The effects of the fiber contents on the mechanic properties of the adobes.
March 1, 2008... Abstract In this study, compression and tensile tests were conducted for five different adobe mixtures. The important part of this study consisted of uniaxial compressive tests done with natural fiber mixtures. Thus, the results obtained...

A morphological fusion algorithm for optical detection and quantification of decay patterns on stone surfaces.
March 1, 2008... The quantification of black crust formation on exposed stone has been carried out in this work with the aid of non-destructive analytical techniques. The proposed non-destructive Morphologically Fused Detection (MFD) approach, quantifies the...

Characteristics of elastomeric and plastomeric binders in contact with natural asphalts.
March 1, 2008... Bituminous binders are known to have simple rheological properties. Natural asphalts, such as Trinidad Lake Asphalt (TLA) and Uintaite, are often used for bitumen modification in order to obtain improved performance of the respective asphalt...

Characterization of pore systems of air/water-cured concrete using ground penetrating radar (GPR) through continuous water injection.
March 1, 2008... Abstract This paper describes a series of experiments in characterizing the pore systems of mature and hardened air-cured and water-cured concrete specimens. The characterization was achieved by measuring the real part of complex...

Predicting iron staining of siderite-bearing microsyenites intended for dimension stone use.
March 1, 2008... Abstract This paper reports on the investigation into the performance of a microsyenite rock containing siderite, as a secondary mineral phase, from the disused Mt Gibraltar quarry in the Bowral district, 100 km south-west of Sydney in New...

Concrete jacket construction detail effectiveness when strengthening RC columns.
March 1, 2008... Abstract This paper presents an experimental investigation of the effectiveness of strengthening half height full size concrete columns by placing concrete jackets. Three alternative methods of concrete jacketing are investigated and...

Aspects of behaviour of CFRP reinforced concrete beams in bending.
March 1, 2008... Abstract The corrosion of steel poses a serious problem to the durability of reinforced concrete structures and fibre reinforced polymer (FRP) has emerged as a potential alternative material to the traditional steel. The results of a test...

Comparison of rutting resistance of unmodified and SBS-modified Superpave mixtures by accelerated pavement testing.
March 1, 2008... Abstract Superpave asphalt mixtures have been used in highway pavements in the US since the late 1990s. Modified binders have also been used in some of the Superpave mixtures in an effort to increase the cracking and rutting resistance of...

Seismic retrofitting of R/C columns having plain rebars using CFRP sheets for improved strength and ductility.
March 1, 2008... Abstract This experimental work focuses on the retrofitting of reinforced concrete columns using carbon fiber reinforced polymer (CFRP) sheets to improve their strength and ductility capacities. Plain rebars, inadequate splicing lengths...

Effect of curing conditions on the mortars with and without GGBFS.
March 1, 2008... Abstract The effect of curing conditions on properties of mortars with and without ground granulated blast furnace slag (GGBFS) was studied. In the present work, cement was replaced by ground granulated blast furnace slag 0% (control),...

Test analysis for FRC beams strengthened with externally bonded FRP sheets.
March 1, 2008... Abstract Performances of two different types of fiber reinforced concrete (FRC) beams, which are strengthened with three different types of fiber reinforced plastic (FRP) sheets, respectively, are analyzed in this paper. A series of...

Pozzolanic characteristics of pulverized incinerator bottom ash slag.
March 1, 2008... 1. Introduction Incineration is expected to become a major municipal waste management alternative, as it is an effective means of waste volume destruction, as well as producing benefits from energy recovery. However, a substantial amount,...

Dynamic soil-structure interaction analysis of buildings by neural networks.
March 1, 2008... 1. Introduction Soil-structure interaction (SSI) is an important issue, especially for stiff and massive structures constructed on the relatively soft ground, which may alter the dynamic characteristics of the structural response...

Wind performance evaluation of fully bonded roofing assemblies.
March 1, 2008... Abstract Wind performance investigation is critical in the design of durable roofing assemblies. In North America, mainly two types of low slope roofs, conventional and inverted, are in practice depending on the placement of the membrane...

New approach in measuring water absorption of recycled aggregates.
March 1, 2008... Abstract With the increase in the use of recycled aggregate concrete, the demand on recycled aggregate (RA) is escalating. As such, the behaviour and characteristics of RA need to be clearly understood. In practice, the testing procedures...

Impact properties of geopolymer based extrudates incorporated with fly ash and PVA short fiber.
March 1, 2008... 1. Introduction Recent years have seen a great development in new type of high performance inorganic cementitious materials--geopolymeric cement around the world. Geopolymeric cement is one type of three dimensional CaO-free...

Simplified method for concrete pavement design with discrete structural fibers.
March 1, 2008... Abstract The addition of discrete macro fibers to plain concrete increased the flexural capacity of concrete slabs supported on ground. Flexural strength tests (i.e., ASTM C78) did not capture the added toughening mechanisms fibers...

Deflection estimation of a full scale prestressed concrete girder using long-gauge fiber optic sensors.
March 1, 2008... Abstract This paper investigates an applicability of long-gauge fiber optic sensors to prestressed concrete structures. A main motivation is to monitor the deflection of railway bridges without intervenes of the signal intensity...

Suitable features selection for the HMLP and MLP networks to identify the shape of aggregate.
March 1, 2008... Abstract Aggregates are one of the main ingredients for producing concrete. In order to produce 'high performance' concrete, the properties of aggregates matter most. In particular, shape and surface texture of aggregates immensely...

Sprayed FRP repair of simulated impact in prestressed concrete girders.(fiber reinforced polymer)
March 1, 2008... Abstract The sprayed fiber reinforced polymer (FRP) technique consists of discontinuous glass fibers sprayed onto the concrete surface concurrently with a vinyl ester resin. In order to evaluate the potential for sprayed FRP repair on...

Calendar.(Calendar)
March 1, 2008... Calendar Event Date and Details from venue 2008 DFE2008: International 24-26 April Contact: Professor K. Jarmai Conference on Design, University University of Miskolc,...