Construction and Building Materials articles from June 2008

Construction and Building Materials archives from June 2008

Material characteristics of 3-D FRP sandwich panels.(usage of fiber reinforced polymer )
June 1, 2008... Abstract This paper presents an innovative 3-D fiber reinforced polymer (FRP), panels designed to overcome delamination problems typically encountered in traditional sandwich panels. The sandwich panels consist of GFRP laminates and foam...

Young's modulus of fiber-reinforced and polymer-modified lightweight concrete composites.
June 1, 2008... Abstract In this paper, the effect of steel fiber reinforcement and polymer modification on the Young's modulus of lightweight concrete aggregates is investigated. Through experimental measurements, composite property models that best...

Compliance criteria for quality concrete.
June 1, 2008... Abstract With the advancement in cement technology, it is now possible to produce concrete of high strength with increased water/cement ratio. While this may satisfy the strength requirement, it is possible that the durability of such...

Laboratory investigation of the properties of asphalt and its mixtures modified with flame retardant.
June 1, 2008... Abstract The purpose of this study was to evaluate the properties of asphalt and its mixtures modified with Decarbomodiphenyl ether (EBPED), Antimony trioxide and zinc borate (ZB). Thermal analysis and Infrared spectroscopy (IR) were used...

Highly flowable reactive powder mortar as a repair material.
June 1, 2008... Abstract A reactive powder mortar (RPM) with a flow value of 200% and a compressive strength of 75 MPa is proposed. A series of slant shear, rebar pull-out and tensile strength tests were performed on cylindrical specimens repaired using...

Numerical simulation of mechanical behaviour of asphalt mix.
June 1, 2008... Abstract The present paper attempts to develop a numerical model for predicting the mechanical behavior of asphalt mixes. In this work asphalt mix samples are modeled with the finite element method incorporating irregular as well as for...

Laboratory tests of composite wood-concrete beams.(Table)
June 1, 2008... Abstract Exploratory research related to the effectiveness of layered composite solid wood--concrete floor systems is described. Rectangular beams comprised of a concrete layer atop a solid dimension lumber layer were load tested....

The research of GMA-g-LDPE modified Qinhuangdao bitumen.(Table)
June 1, 2008... Abstract The paper studies the Qinhuangdao bitumen modified by LDPE and GMA-g-LDPE, respectively. When the polymer content is altered the performances of polymer modified bitumen such as softening point, ductility at low temperature,...

Cotton and limestone powder wastes as brick material.
June 1, 2008... Abstract Large amounts of cotton and limestone wastes are accumulated from the countries all over the world. The majority of cotton wastes (CW) and limestone powder wastes (LPW) is abandoned, and causes certain serious environmental...

Thin-joint glued brickwork: building in the British context.(Report)
June 1, 2008... Abstract Thin-joint glued brickwork is used increasingly in mainland Europe but the uptake of the technology is inhibited in the UK because of a lack of design guidance. This paper, based on an international research project, provides some...

Reduction of alkali silica reaction risk in concrete by natural (micronised) amorphous silica.(Report)
June 1, 2008... Abstract Concrete, which is the most consumption material after the water in the world, sustains a very big importance in terms of durability, strength, safety, economy and environment. The utilizing lifetime of concrete structures with...

Prediction of time to crack initiation in reinforced concrete exposed to chloride.(Report)
June 1, 2008... Abstract The effects of silica fume ratio and chloride concentration on reinforcement corrosion and crack time of concrete are investigated by accelerated corrosion test. In order to represent the situation that free chloride ions are...

Experimental application of mineral admixtures in lightweight concrete with high strength and workability.(Report)
June 1, 2008... Abstract The effects of mineral admixtures including fly ash (FA), blast furnace slag (BS) and silica fume (SF) on workable high strength lightweight concrete were investigated. The results showed that both BS and SF can effectively...

Low temperature process to create brick.(Report)
June 1, 2008... Abstract The making of durable alkali-activated aluminosilicate brick can be accomplished on a small or industrial scale according to the needs of the community. Brick made with this technology can be obtained in a few hours using a...

The effects of compaction temperature on CRM mixtures made with the SGC and the Marshall compactor.(compaction temperature of crumb rubber modifier)(Report)
June 1, 2008... Abstract The compaction temperature of crumb rubber modifier (CRM) asphalt mixes needs to be determined cautiously because the viscosity and the amount of the CRM binder affects the compactability of the mixtures. In this study, a...

Numerical analysis of localized steel corrosion in concrete.(Table)
June 1, 2008... Abstract Although the existing studies on the estimation of corrosion induced cracking time of concrete cover practically assumed that the shape of corrosion product is uniform, experimental observations show that the shape of the...

Influence of damage degree on self-healing of concrete.(Table)
June 1, 2008... Abstract The paper presents experimental results of self-healing process of concrete damaged at different ages. Essentially, the self-healing of damaged concrete is processes of crack closing with re-hydration products of unhydrated or...

Compactibility of hot bituminous mixtures made with crumb rubber-modified binders.(Table)
June 1, 2008... Abstract Badly compacted mixtures will develop undesirable properties of low stiffness, bad fatigue resistance, bad durability, etc. that is not expected from a good pavement. This paper is to evaluate the compactibility of hot asphalt...

Shear capacity of precracked and non-precracked reinforced concrete shear beams with externally bonded bi-directional CFRP strips.(Table)
June 1, 2008... Abstract This paper exemplifies both the shear strengthening capacity and modes of failure of Reinforced Concrete (RC) rectangular shear beams bonded externally with Bi-Directional Carbon Fibre Reinforced Polymer (CFRP) Composites. In...

Bond strength of hot-dip galvanized hooked bars in normal strength concrete structures.(Table)
June 1, 2008... Abstract In 2001, a multi-phase research program was started at the American University of Beirut (AUB) to evaluate experimentally the effect of hot dip galvanizing on bond strength of reinforcement in concrete structures. In the first two...

Assessing of the fresh concrete properties of self-compacting concrete containing sawdust ash.(Table)
June 1, 2008... Abstract Evaluation of self-compactability of SCC mixes containing SDA as powder material and naphthalene sulphonate (NS) and melamine sulphonate (MS), respectively, shows that optimum workability range for the slump flow test lie between...

Evaluation of the alkali reactivity of cherts from Turkey.(Table)
June 1, 2008... Abstract Chert, which is a crypto and/or microcrystalline sedimentary rock, may lead to alkali--silica reaction in concrete when the conditions are favorable. However, cherts vary in composition and consequently may demonstrate different...

Influence of quicklime addition on the mechanical properties and hydration degree of blended cements containing different fly ashes.(Table)
June 1, 2008... Abstract Even though the use of pozzolanic and latent hydraulic materials (such as fly ash, slag and natural pozzolans) in the construction sector is nowadays a common practice, certain deficits associated with these materials have...

Properties of tungsten mine waste geopolymeric binder.(Table)
June 1, 2008... Abstract Tungsten mine waste mud (TMWM) geopolymeric binder is a new cementitious material with a very high early age strength. It is obtained from dehydroxylated mine waste powder mix with minor quantities of calcium hydroxide and...

Effects of the manufacturing process on the performances of the bituminous binders modified with EVA.(Table)
June 1, 2008... Abstract Effects of both addition of commercial EVA and manufacturing mode on the performances of asphalt concrete are investigated. Different concentrations of EVA have been incorporated in either the asphalt cement 80/100 or during the...

The using of waste phosphogypsum and natural gypsum in adobe stabilization.(Table)
June 1, 2008... Abstract The best known disadvantages of adobe are its low mechanical properties and poor resistance to water damage. In this research waste phosphogypsum (PG) and natural gypsum were used as stabilization material to improve the...

Evaluation of concrete made with crushed limestone aggregate based on ultrasonic pulse velocity.
June 1, 2008... Abstract Ultrasonic pulse velocity is one of the non-destructive tests to assess construction materials that have more advantages. It has been used to determine concrete quality by using regression analysis models between compressive...

Estimation of asphalt concrete fatigue curves--a damage theory approach.
June 1, 2008... Abstract In order to represent the behaviour during fatigue tests of asphalt concrete mixtures, a phenomenological model, based on the continuous damage theory, has been developed. From this model, a method for estimation of fatigue curves...

Investigation of permeability and leaching of hot mix asphalt concrete containing oil-contaminated soils.
June 1, 2008... Abstract Oil-contaminated soil (OCS) results from leaking underground storage tanks, oil spills on clean soils, or soils surrounding petroleum refineries and crude oil wells. In Oman, Petroleum Development Oman (PDO) generates more than...

Reduction in the permeability of plastic concrete for cut-off walls through utilization of silica fume.
June 1, 2008... Abstract Principal requirements for plastic concretes used in construction of cut off walls of dams, are a low enough elastic modulus compatible with the surrounding soil, adequate strength for loads sustained and adequate water tightness....

Analysis of unbalanced binder oxidation level in recycled asphalt mixture using GPC.(gel-permeation chromatography)
June 1, 2008... Abstract In a conventional hot-mix asphalt recycling process, the reclaimed asphalt pavement (RAP), generally, is mixed with the virgin binder and aggregates and, sometimes, recycling agent. During this process, all materials are mixed for...

Shear strength of strengthened RC beams with FRPs in shear.
June 1, 2008... Abstract We propose a predictive model for shear strength of RC beams strengthened by fiber material. It consists of a plasticity model for web crushing, a truss model for diagonal tension, and a simple flexural theory based on the...

Porous structure and water vapour sorption of hemp-based materials.
June 1, 2008... Abstract This paper deals with environmentally friendly building materials: lime-hemp render, hemp mortar and hemp wool. The investigations are based on porous structure and water vapour sorption studies that provide both hygric property...

Incorporation of sludge waste from water treatment plant into red ceramic.
June 1, 2008... Abstract The influence of the firing temperature on the technological properties of red ceramics made of a kaolinitic clay incorporated with a sludge from water treatment plant was evaluated. The sludge was initially submitted to...

Studies on mortars containing waste bottle glass and industrial by-products.
June 1, 2008... Abstract This study presents investigation of properties of cement-based mortars produced with cement containing waste glass (WG) and industrial by-products. The features, compressive strength, sulfate and chloride resistance, high...

Effect of silica fume and expanded perlite addition on the technical properties of the fly ash-lime-gypsum mixture.
June 1, 2008... Abstract The main objective of this research was to investigate the effect of different type of pozzolan additions to cement free lightweight block made from fly ash-lime-gypsum mixture and observe the changes in physical, mechanical,...

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