Construction and Building Materials articles from January 2007

Construction and Building Materials archives from January 2007

Evaluation on the effect of lithium nitrite corrosion inhibitor by the corrosion sensors embedded in mortar.
January 1, 2007... Abstract Accelerated corrosion tests of reinforcing steel in mortar containing chlorides were conducted using a lithium nitrite corrosion inhibitor focusing on the nitrite--chloride ion molar ratio (N[O.sup.-.sub.2]/[Cl.sup.-]) as a test...

Mechanical properties of polymer-modified concretes containing expanded polystyrene beads.
January 1, 2007... Abstract In this study, styrene-butadiene rubber (SBR) latex as a polymeric admixture was applied in lightweight expanded polystyrene (EPS) concrete. The effects of curing conditions and polymer-cement ratio on the compressive and flexural...

Cementless pressed blocks from waste products of coal-firing power station.
January 1, 2007... Abstract The effect of altering composition of cementless building materials on basis of waste products of power station including hydrophobic additive and the molding compaction on the compressive strength, water uptake and water...

Structural application of GRC in telecommunication towers.
January 1, 2007... Abstract Glass-fiber reinforced concrete (GRC) is a material made of a cementitious matrix composed of cement, sand, water and admixtures, in which short length glass fibers are dispersed. It has been widely used in the construction...

Effect of sulfate concentration and associated cation type on concrete deterioration and morphological changes in cement hydrates.
January 1, 2007... Abstract This paper reports results of a study conducted to evaluate the effect of sulfate concentration and the associated cation type on concrete deterioration and morphological changes in cement hydrates. The concrete specimens were...

Durability of masonry systems: a laboratory study.
January 1, 2007... Abstract We deal with the textural aspects, porometry and hydric behaviour of combinations of building materials and their durability under attack by salt crystallisation and freezing. We selected 4 types of lime mortar (pure lime mortar,...

Using phosphogypsume and boron concentrator wastes in light brick production.
January 1, 2007... Abstract In this study, use of wastes produced in phosphoric acid plants and boron concentrators in producing structural brick has been investigated. There are several parameters involved in using these wastes in brick production namely...

Steel encased polymer concrete under axial compressive loading: analytical formulations.
January 1, 2007... Abstract Composite structures and in particular steel encased concrete structures, are rapidly emerging as one of the inevitable structural systems for earthquake resistance, as they have been known to exploit the best attributes of steel...

Polymer modified asphalt binders.
January 1, 2007... Abstract This paper is a review of research that has been conducted on polymer modified binders over the last three decades. Polymer modification of asphalt binders has increasingly become the norm in designing optimally performing...

Investigation of laterite stones for building purpose from Malabar region, Kerala state, SW India--Part 1: field studies and profile characterisation.
January 1, 2007... Abstract This paper describes the first part of a project that aims to evaluate laterite for building purposes from 4 widely placed major quarries of the Malabar region in Kerala in western India. The work reported herein is a...

The effect of conditioning to a predetermined weight loss on the permeability of concrete.
January 1, 2007... Abstract The durability properties of concrete can be assessed via gas permeability tests. The moisture content of the concrete plays a major role in its permeability to gas, and the conditioning stage of any gas permeability test aims to...

Study the surface color of sewage sludge mortar at high temperature.
January 1, 2007... Abstract In this study, with the help of digital image analysis method, the surface color changes of sludge ash mortar specimens at various elevated temperatures are studied. Moreover, the influences of temperatures on surface color...

Frost attack resistance and steel bar corrosion of antiwashout underwater concrete containing mineral admixtures.
January 1, 2007... Abstract This study aims to evaluate frost durability and steel-bar corrosion in antiwashout-underwater concrete, which has been neglected to date. To achieve this goal, repeated freezing and thawing and accelerated steel-bar corrosion...

Anchorage and shear strength properties for composite tendons used in earthwork support systems.
January 1, 2007... Abstract When employing advanced excavation techniques (e.g. continuous mining methods, mechanized tunnelling, etc.) it may be often necessary to excavate through previously supported areas. This means that the cutting heads of the...

Using fibres to enhance the properties of concrete columns.
January 1, 2007... Abstract This paper explores the effects of adding synthetic reinforcing fibres to high-strength reinforced concrete columns and in particular only to the cover of the columns. An experimental program was conducted where seven circular...

Gypsum coatings in ancient buildings.
January 1, 2007... Abstract Gypsum plasters from old buildings are a legacy of the building techniques of our ancestors. These coatings, frequently gifted with a high artistic value, are part of the historical building heritage of each country that needs to...

Soundness evaluation of concrete with MgO.
January 1, 2007... Abstract A new test method--delayed autoclave expansion test has been used in this study to evaluate the soundness of concrete that contains intrinsic dead-burnt MgO and adscititious lightly burnt MgO. The autoclave expansion value and...

Fatigue testing of glass/epoxy joints in timber up to the endurance limit.
January 1, 2007... Abstract Concern about fatigue is one of the factors limiting use of glass/epoxy jointing systems for timber in construction. In this paper, a series of high-cycle fatigue tests are reported which indicate that the performance is as good,...

Hybrid fiber reinforced self-compacting concrete with a high-volume coarse fly ash.
January 1, 2007... Abstract This paper presents a study on the fresh and mechanical properties of a fiber reinforced self-compacting concrete incorporating high-volume fly ash that does not meet the fineness requirements of ASTM C 618. A polycarboxylic-based...

Experimental study of epoxy repairing of cracks in concrete.
January 1, 2007... Abstract Cracks in concrete structures have always posed a big threat on the durability of concrete. Cracking of concrete is a random process, highly variable and influenced by many factors. Among the crack repair methods is the use of...

Effects of contaminants on the properties of concrete paving blocks prepared with recycled concrete aggregates.
January 1, 2007... Abstract The use of recycled aggregates for preparing concrete products has been successfully implemented and gaining wider acceptance. However, the allowable level of contaminating materials (e.g., crushed clay bricks, crushed ceramic...

Potential of rubber aggregates to modify properties of cement based-mortars: improvement in cracking shrinkage resistance.
January 1, 2007... Abstract Cement-based materials suffer from their low tensile strength and poor strain capacity: they are sensitive to cracking, above all to shrinkage cracking. Enhancing the cracking resistance of cementitious materials is the objective...

A preliminary study of reactive powder concrete as a new repair material.
January 1, 2007... Abstract This study aims to use reactive powder concrete (RPC) as a new repair material and evaluate its bond durability to existing concrete. One accelerated aging environment, namely a freeze-thaw cycle acceleration deterioration test,...

Influence of corrosion on the friction characteristics of the steel/concrete interface.
January 1, 2007... Abstract This paper reports results of an experimental programme to measure changes in friction characteristics of the interface between reinforcement and concrete as a result of the formation of corrosion products on the surface of the...

Experimental study of the mechanical behavior of continuous glass and carbon yarn-reinforced mortars.
January 1, 2007... Abstract This work aims to evaluate the possibilities of cementitious materials reinforcement by continuous alkaline resistant AR glass or carbon yarns. Bond flexural tests and flexural tests on 7 x 7 x 28-cm specimens were performed at...

New building materials from fly ash-based lightweight inorganic polymer.
January 1, 2007... Abstract A lightweight inorganic polymer is produced from Class F fly ash, metakaolinite and lightweight aggregate. This inorganic material is activated using small amounts of sodium hydroxide and sodium silicate solution. Processing...

Evaluation of building materials using infrared thermography.
January 1, 2007... Abstract Infrared thermography is a non-destructive testing technology that can be applied to determine the superficial temperature of objects. In this method, detectors collect infrared radiation to create a thermal image showing the...

Seismic behaviour of the historical structural system of the island of Lefkada, Greece.
January 1, 2007... Abstract The detailed survey of damages observed in numerous historical houses of the city of Lefkada, Greece, after the strong August 2003 earthquake, as well as the parameter analysis carried out within the present work allowed for the...

Calendar.(Calendar)
January 1, 2007... Calendar Event Date and venue Details from 2007 ICSAS 07: Sixth 24-27 July 2007 Contact: Dr Robert G Beale International Oxford, UK Oxford Brookes University School...