Construction and Building Materials articles from May 2008

Construction and Building Materials archives from May 2008

Properties of concrete contains mixed colour waste recycled glass as sand and cement replacement.
May 1, 2008... Abstract Mixed colour waste recycled glass is waste material that cannot be reused in glass industry. Concrete can be considered as an outlet for the surplus quantities of the mixed colour waste recycled glass. This research work studies...

The effects of pumice aggregate/cement ratios on the low-strength concrete properties.
May 1, 2008... Abstract Lightweight concretes can be produced by using processed natural material, processed by-product or unprocessed porous materials, depending upon the requirements of density and strength levels. The present study covers the use of...

Parametric study on the behavior of short span composite bridge girders strengthened with carbon fiber reinforced polymer plates.
May 1, 2008... Abstract In the last few years, extensive research has been done on the strengthening of concrete structures using fiber reinforced polymers (FRP) as externally bonded sheets or plates. A limited number of studies have also been performed...

Detection of damage due to corrosion in prestressed RC beams by static and dynamic tests.(Table)
May 1, 2008... Abstract In this paper, the behaviour of pre-stressed RC beams with compressive concrete subjected to damage due to reinforcement corrosion has been experimentally investigated. The experimental static and dynamic analysis is described....

Use of quartet blends containing fly ash, scoria, perlitic pumice and cement to produce cellular hollow lightweight masonry blocks for non-load bearing walls.(Table)
May 1, 2008... Abstract Cellular hollow lightweight masonry (CHLM) blocks produced by fly ash, scoria, perlitic pumice and cement could be used as for concrete hollow blocks in building industry. CHLM blocks are lightweight and being hollow, give thermal...

Polluted river sediments from the North region of France: treatment with Novosol[R] process and valorization in clay bricks.(Table)
May 1, 2008... Abstract The paper presents results of studies on the valorisation of polluted river sediments from the North region of France. The first objective of this study is to validate the treatment of polluted sediments with the Novosol[R]...

Moment/thrust interaction diagrams for reinforced masonry sections.
May 1, 2008... Abstract This paper presents a numerical analysis for estimating moment/thrust interaction diagrams for reinforced masonry sections. Realistic constitutive models are used for the masonry and steel reinforcement. Considering compatibility...

The effect of helical pitch on the behaviour of helically confined HSC beams.
May 1, 2008... Abstract The strength and ductility of HSC beams are enhanced through the application of helical reinforcement located in the compression region of the beams. The pitch of helix is an important parameter controlling the level of strength...

Characteristics of clays and properties of building ceramics in the state of Rio de Janeiro, Brazil.(Table)
May 1, 2008... Abstract The general characteristics and technological properties of four types of clays obtained from the same location at the north of the State of Rio de Janeiro, Brazil, have been investigated. These clays are intended for applications...

Neural networks in 3-dimensional dynamic analysis of reinforced concrete buildings.(Table)
May 1, 2008... Abstract The objective of this study is to investigate the adequacy of Artificial Neural Networks (ANN) as a securer, quicker and more robust method to determine the dynamic response of buildings in 3D. For this purpose, two ANN models...

Seismic behavior of RC columns with circular, square and diamond sections.(Table)
May 1, 2008... Abstract A numerical solution procedure based on the finite grid element method and an iterative procedure is developed with considerations of two different nonlinear stress--strain relations for confined core concrete by stirrups and for...

Stress-strain relationship of steel fiber-reinforced concrete under dynamic compression.
May 1, 2008... Abstract Steel Fiber Reinforced Concrete (SFRC) possesses many excellent dynamic performances such as high resistance to explosion and penetration. In the present study, three types of SRFC specimens with 0.0%, 3.0% and 6.0% (percentage by...

Freezing-thawing phenomena in fired clay materials and consequences on their durability.
May 1, 2008... Abstract Up to now there were four freezing tests methods for tiles in the European Union. These methods derive from respectively four national methods: Benelux Method (A), German Method (B), French Method (C), and British Method (D). A...

Prediction of long term chloride diffusion of concrete in harsh environment.
May 1, 2008... Abstract A harsh environment of temperature (20-54[degrees]C [68-129[degrees]F]) and humidity (80-95%) with the presence of chloride and sulfate make concrete structures vulnerable to deterioration and as a result shorten their service...

Microstructure and pore structure of concrete mixed with superfine phosphorous slag and superplasticizer.
May 1, 2008... Abstract The hydration products, microstructures and pore structures of paste with part of Portland cement replaced by superfine phosphoric slag were investigated by XRD, DTA and SEM in this article. The results shown that the appropriate...

An empirical model for predicting the mechanical properties of FRP-confined concrete.
May 1, 2008... Abstract The mechanism of confining concrete using FRP materials was studied experimentally in numerous works, whereas several models were proposed for the prediction of the mechanical properties of FRP-confined concrete. The first part of...

Conservation of tuff-stone with polymeric resins.(Report)
May 1, 2008... Abstract In this work, the experimentation of protective treatments on yellow and grey tuff-stones, characteristic materials of the historic buildings of Salerno (Italy), was performed. Tuff-stones, due to their high porosity, are often...

Characteristics of lime produced from limestone containing diatoms.(Report)
May 1, 2008... Abstract In this study lime binder used in stone and brick masonry mortars of some historic Ottoman baths was examined to understand whether the binders were hydraulic or not. For this purpose the mineralogical and elemental compositions...

Bacterial carbonate precipitation as an alternative surface treatment for concrete.(Report)
May 1, 2008... Abstract Surface treatments play an important role in the protection of construction materials from the ingress of water and other deleterious substances. Due to the negative side-effects of some of the conventional techniques, bacterial...

The use of coarse and fine crushed bricks as aggregate in concrete.(Report)
May 1, 2008... Abstract Recycling and reuse of building rubble present interesting possibilities for economy on waste disposal sites and conservation of natural resources. This paper examines the possibility of using crushed brick as coarse and fine...

Cement paste characteristics and porous concrete properties.(Report)
May 1, 2008... Abstract In this paper, cement paste characteristics and porous concrete properties are studied. The results indicate that cement paste characteristics are dependent on the water to cement ratio (W/C), admixture and mixing time. Cement...

Performance evaluation of porous asphalt with granulated synthetic lightweight aggregate.(Report)
May 1, 2008... Abstract This paper presents the results of a laboratory study evaluating the mixture characteristics and durability of porous asphalt made with granulated synthetic lightweight aggregate (GSLA). Porous asphalt specimens incorporating 0%,...

Basic properties of epoxy cement mortars without hardener after outdoor exposure.(Report)
May 1, 2008... Abstract The purpose of this study is to evaluate the properties of epoxy cement mortars without a hardener after outdoor exposure for a year. The epoxy cement mortars with and without a hardener were prepared for various polymer cement...

An experimental study of cold formed steel trusses using mechanical clinching.(Report)
May 1, 2008... Abstract The paper describes an investigation into the use of mechanical clinching in cold-formed steel trusses. A series of full-scale tests on trusses with varying configurations of chord and internal members was undertaken. In addition...

Resistance to chloride penetration of blended Portland cement mortar containing palm oil fuel ash, rice husk ash and fly ash.(Report)
May 1, 2008... Abstract This paper presents a study of the resistance to chloride penetration of blended Portland cement mortar containing ground palm oil fuel ash (POA), ground rice husk ash (RHA) and fine fly ash (FA). Ordinary Portland cement (OPC) is...

Experimental investigation on dynamic properties of rubberized concrete.(Report)
May 1, 2008... Abstract Damping ratio is the main parameter representing the property of materials in vibration reduction. In this study, simply supported beams were tested using a free vibration method to determine the relationships between damping...

Effect of thermal shock due to rapid cooling on residual mechanical properties of fiber concrete exposed to high temperatures.(Report)
May 1, 2008... Abstract An experimental investigation was conducted on the effect of thermal shock during cooling on residual mechanical properties of fiber concrete exposed to elevated temperatures from 200 to 800[degrees]C. Various cooling regimes were...

Properties of steel fibrous concrete containing mixed fibres in fresh and hardened state.(Report)
May 1, 2008... Abstract The paper presents results of an experimental investigation carried out to study the properties of plain concrete and steel fibre reinforced concrete (SFRC) containing fibres of mixed aspect ratio. An experimental programme was...

Stress analysis of the piers of the Tarazona Cathedral (Zaragoza--Spain) by means of the hole-drilling technique.(Report)
May 1, 2008... Abstract The paper deals with the application of the hole-drilling technique on the four piers of the crossing under the dome of the Cathedral of Tarazona (Zaragoza-Spain). The hole-drilling technique in architectural heritage is named the...

The effect of asphalt mixture gradation and compaction energy on aggregate degradation.(Table)
May 1, 2008... Abstract This paper investigates the influence of asphalt mixture type (aggregate gradation) and compaction energy level on the degradation of aggregate during laboratory compaction. The most severe form of laboratory compaction in terms...

Assessing concrete strength by means of small diameter cores.
May 1, 2008... Abstract Estimation of concrete strength may be gained from compression tests conducted on cores having a diameter considerably smaller than the recommended one of 100 mm. This paper examines the results of tests applied on the 69 and 46...

Properties of prefabricated building materials produced from ground pumice aggregate and binders.(Table)
May 1, 2008... Abstract In this study, samples obtained from ground pumice aggregate (GPA) mixed with cement, gypsum and lime were produced by using a pressure forming (PF) processes and steam-curing. The compressive strength, density and water...

Evaluation of compacted aggregate resistant test compared with the fine aggregate angularity standards.
May 1, 2008... Abstract This paper describes the determination of fine aggregate angularity (FAA) characteristics of different mineralogical type and shape (both angular and round) of aggregates which were received from 14 different sources. The ASTM...

Granulated foam glass-ceramic material from zeolitic rocks.(Technical Note)(Table)
May 1, 2008... Abstract The objective of this research work was to investigate the production of granulated foam glass-ceramic material from zeolitic rocks. The investigations have shown that grinding raw materials to particle size less than 0.5 mm and...

Activation of fly ash-lime systems using calcined phosphogypsum.(Technical Note)(Table)
May 1, 2008... Abstract Experiments were performed to determine the effect of calcined phosphogypsum on the strength of fly ash lime binders. Significant strength increases compared to binders without calcined phosphogypsum were observed due to the...

Calendar.(Calendar)
May 1, 2008... Calendar Event Date and venue 2008 DFE2008: International Conference 24-26 April on Design, Fabrication and University of Miskolc, Economy of Welded...