Showing papers in "Construction and Building Materials in 2005"

TL;DR: A software tool that can be used to model GPR responses from arbitrarily complex targets called GprMax is presented and has been successfully employed in situations, where a deeper understanding of the operation and detection mechanism of GPR was required.

TL;DR: In this article, the authors studied the stabilization of residual soils by chemically using cement and rice husk ash and concluded that adding 6-8% and 10-15% of these materials to the residual soil is an optimum amount.

TL;DR: In this paper, the effect of fly ash with high replacing ratio of clay on firing parameters and properties of bricks were studied and the results indicate that the plasticity index of mixture of fly-ash and clay decrease dramatically with increasing of replacing ratio.

TL;DR: In this article, the mechanical properties of certain combinations of fibrous waste materials and some stabilisers were investigated thoroughly and some concrete conclusions were drawn and it was concluded that the interface layers of the fibrous materials increased the compressive strength and a certain geometrical shape of these layer materials gave the best results.

TL;DR: The influence of incorporating ground granulated blastfurnace slag (GGBS) and metakaolin (MK) on concrete strength is investigated in this article, where Portland cement was partially replaced with 0-80% GGBS and 0-20% MK.

TL;DR: In this paper, ground penetrating radar (GPR) technology has been used to assess pavement performance and structure for the past 30 years in a variety of ways, and the main issue remains: How well does GPR work and under what conditions?

TL;DR: In this article, the compressive behavior of concrete short columns externally confined by carbon and E-glass FRP jackets was investigated and the influences of different parameters such as the confinement level, the mechanical properties of the jackets and the concrete core were studied.

TL;DR: In this paper, the authors provide a summary of measurement and interpretation issues for the key engineering parameters used to define: unit weight, compressibility, shear strength, lateral stiffness, in situ horizontal stress and hydraulic conductivity.

TL;DR: In this article, a strengthening technique based on the insertion of steel bars in the bed joints of masonry structures is proposed, which can control the cracking phenomena, keeping the structure in the desired safety conditions.

TL;DR: In this paper, the effect of size and grading of the coarse aggregate on the durability and the microstructure characteristics of concrete was investigated and the results indicated that as the proportion of larger size aggregate increases in the mix, the local porosity at the ITZ increases and the overall durability decreases.

TL;DR: In this article, the performance of lightweight concrete under different w/cm ratio and different cement paste content was compared with self-consolidating lightweight concrete (SCLWC), and the test results indicated that the 91-day compressive strength of SCLWC is up to 56 MPa when cement content is 386 kg/m3 and water content is 150 kg /m3.

TL;DR: In this paper, the strength and drying shrinkage of concretes with the natural sand replaced with furnace bottom ash (FBA) at 0, 30, 50, 70% and 100% by mass, were studied at fixed water-cement ratios (W/C) and fixed slump ranges.

TL;DR: In this article, the effect of four additives, namely two fatty amine (Wetfix I, Lilamin VP 75P), one catalyst (Chemcrete) and a polymer (rubber), on the moisture damage of asphalt mixtures were studied.

TL;DR: In this article, the first-crack strength, failure strength, and strength reliability of steel-polypropylene hybrid fiber-reinforced concrete in comparison with the steel fiber reinforced concrete were investigated.

TL;DR: In this article, the authors present several research results in China on carrier effect of zeolite, including both an ion-exchange function and an adsorption function, that can be used in the manufacturing of new construction's products as well as building materials.

TL;DR: In this article, the authors tested the technical properties of bricks produced with spent grains added to increase porosity, and the results showed that the resulting bricks possessed comparable or higher strength, a higher porosity and a reduced density after firing than those from a standard production clay.

TL;DR: In this article, the flexural properties of reinforced and unreinforced glued-laminated beams were investigated using two types of reinforcement: steel plate and carbon fiber reinforced polymer (CFRP).

TL;DR: In this paper, the laser-induced breakdown spectroscopy (LIBS) was used to measure the chloride content of reinforced concrete cores and the results were compared with the results of standard chemical methods.

TL;DR: In this paper, the pore structure significantly affects the lightweight characteristics and thermal performance of materials, and the minimum required cement amount was determined by the compressive strength of the sewage sludge ash foamed material (SSAFM).

TL;DR: In this article, the effect of additives such as calcite, dolomite and sodium chloride on the mineralogical-textural and physical-mechanical behaviour of solid bricks destined for use as new materials in the restoration of historic buildings was studied.

TL;DR: In this article, an experimental study was conducted to evaluate the effect of concrete aggregate gradation, water-cement ratio, and curing time on measured ultrasonic wave velocity (UPV).

TL;DR: In this paper, the authors present an alternative approach to the problem, based on "testing" the real structure rather than trying to model it, and they describe experiments on reinforced concrete (RC) beams, representative of bridge beams.

TL;DR: In this article, an extensive large-scale test program on a series of composite structural components subjected to explosive loading is presented. But the main parameters observed in the tests were the generic construction form of the materials and slab thickness.

TL;DR: In this article, the effect of using high performance steel fiber reinforced concrete (HPFRC) in place of conventional concrete in the joint region was evaluated in six beam-column (B-C) joints.

TL;DR: In this paper, shingles waste in amounts of 1, 2, 3, 4, and 5% by weight were added as an additive to asphalt concrete mixes, which yielded the best stability value was 5%.

TL;DR: In this article, the structural behavior of cracked reinforced concrete one-way slab, which is repaired using different techniques is investigated, and five different techniques are used for the purpose of repair in the cracked concrete slab namely; cement grout, epoxy injection, ferrocement layer, carbon fibre strip and section enlargement.

TL;DR: In this article, the angularity of fine aggregate produced in Turkey was investigated and the relative effect of angularity on the passing time through an orifice was examined to draw the attention of design engineers to this subject.

TL;DR: In this article, the authors studied the sources of defects and the impact of significant factors including design, material, construction, and maintenance on the occurrence of defects in wet areas of 56 non-residential high-rise buildings.

TL;DR: In this article, the compressive strength of ordinary and high performance concrete after having cured at low temperature was investigated experimentally, and the results showed that the results were lower than that of the specimens at standard curing.

TL;DR: In this paper, the rate of ingress of chlorides during a 48-week cyclic wetting and drying regime using a variety of cement blends, viz. pulverised fuel ash, ground granulated blast furnace slag, metakaolin and microsilica, was investigated.