Construction and Building Materials articles from December 2008

Construction and Building Materials archives from December 2008

Mechanical properties of polymer concrete made with recycled PET and recycled concrete aggregates.
December 1, 2008... Abstract The purpose of this study was to solve some of the solid waste problems posed by plastics and concrete demolition. To this end, we evaluated the mechanical properties of polymer concrete, in particular, polymer concrete made of...

Red clay composites reinforced with polymeric binders.
December 1, 2008... Abstract Red clay/polymer composites were prepared by blending red clay with aqueous solutions of carboxymethyl cellulose (CMC), polyvinyl pyrrolidone (PVP), polyvinyl alcohol (PVA). The effects of added polymer binders on properties such...

Development of unsintered construction materials from red mud wastes produced in the sintering alumina process.
December 1, 2008... Abstract A large quantity of red mud (RM) has been disposed to form hills from the Chinese sintering alumina process. These storage areas are generally bare of vegetation and subject to wind and water erosion, posing serious threats to the...

Effectiveness and durability evaluation of rendering mortars made with metallic soaps and powdered silicone.
December 1, 2008... Abstract Metallic soaps and powdered silicones are used to control water absorption in rendering mortars. This paper looks at the effectiveness of several types of waterproofing after 7, 14 and 28 days of curing. The efficiency is analyzed...

Consequences of steel corrosion on the ductility properties of reinforcement bar.
December 1, 2008... Abstract In all concrete constructions besides the common strength problems, in presence or not of seismic activity, serious problems from environmental attack may be presented which significantly decrease their durability and service...

Use of quality indices in comparison of corroded technical steel bars B500c and S500s on their mechanical performance basis.
December 1, 2008... Abstract The nominal cross-sectional area-based quality index QD has been utilized to evaluate and compare the mechanical performance of steel grades B500c and S500s. Although when uncorroded B500c has better mechanical performance than...

A laboratory equipment for the study of moisture processes in thermal insulation materials when placed in a temperature field.
December 1, 2008... Abstract The aim of this paper was to describe design and use of a laboratory set-up that makes a very well controlled moisture load to detect material properties of thermal insulation materials. The outer shell of the set-up is a plastic...

Rheological behavior of high performance concrete with mineral admixtures and their blending.
December 1, 2008... Abstract Rice husk is a waste product that causes pollution and disposal problem. India is the second largest producer of rice in the world and effective use of rice husk ash in concrete is promising. Silica fume and fly ash are also waste...

Strengthening of RC T-section beams with low strength concrete using CFRP composites subjected to cyclic load.(reinforced concrete)(carbon fiber reinforced polymer)
December 1, 2008... Abstract Various methods are developed for strengthening reinforced concrete beams against shear. Nowadays, external bonding of different composite members to RC beams was very popular and successful technique internationally. This study...

Usage of cement kiln dust in cement products--research review and preliminary investigations.
December 1, 2008... Abstract Large quantity of dust, commonly known as cement kiln dust (CKD), is produced during the production of Portland cement. In order to meet environmental requirements, CKD is disposed off in land fills. Recently, there has been a...

Influence of pores on the failure of structural ceramic blocks.
December 1, 2008... Abstract The main goal of this work is to investigate the features of pores of structural ceramic blocks which determine their process of failure under compression. Eighteen ceramic blocks were subjected to compression up to failure....

The properties of cementitious materials superplasticized with two superplasticizers based on aminosulfonate--phenol--formaldehyde.
December 1, 2008... Abstract Two kinds of aminosulfonate-phenol-formaldehyde condensate superplasticizers AS based on sodium p-aminobenzenesulfonate and SDMAS based on sodium p-N,N-dimethylaminobenzenesulfonate were synthesized. The properties of cementitious...

Microstructure and physical properties of lime-clayey adobe bricks.
December 1, 2008... Abstract Microstructural changes of adobe bricks made of lime-clayey raw material mixes were investigated by X-ray diffraction, infrared spectrometry, differential thermal analyses, scanning electron microscopy and energy dispersive...

Fly ash lightweight aggregates in high performance concrete.
December 1, 2008... Abstract Lightweight aggregates have been manufactured by sintering fly ash and crushing the product into suitable sizes. These aggregates possess unique characteristics that make them suitable for high strength and high performance...

Investigation of laterite stones for building purpose from Malabar region, Kerala, SW India--chemical analysis and microstructure studies.
December 1, 2008... Abstract This study reports on the chemical and microstructural analysis of laterite from four different quarries for building purposes from Malabar region in Kerala in the south west of India. Wet chemical analysis was performed to...

Calendar.(Brief article)(Calendar)
December 1, 2008... Calendar Event Date and venue 2009 8th World Congress on 1-5 June Structural and LNEC Conference Multidisciplinary Centre, Lisbon, Optimization ...