Construction and Building Materials articles from April 2004

Construction and Building Materials archives from April 2004

Preface.
April 1, 2004... Based on a growing interest in previous KIFA meetings (Kumamoto International Workshop on Fracture Mechanics and Acoustic Emission) and enthusiasm for nondestructive evaluation (NDE) in concrete, the 3rd Kumamoto International Workshop on...

Continuous monitoring of setting and hardening of mortar and concrete.
April 1, 2004... 1. Introduction RILEM as the worldwide operating organization for research and testing of building and construction materials and structures has set up a Technical Committee on 'Advanced testing of cement based materials during setting and...

Analysis of half-cell potential measurement for corrosion of reinforced concrete.
April 1, 2004... Non-destructive evaluation techniques by the half-cell potential measurement are applied to estimate the corrosion of reinforcing steel-bars in concrete slabs under cyclic wet and dry conditions. The three-dimensional boundary element method...

Role of NDE in quality control during construction of concrete infrastructures on the basis of service life design.
April 1, 2004... Abstract The performance and reliability based service life design follows the same principle and framework as the performance based structural design. It is based on terms such as performances, limit states, reliability and reference...

Numerical studies on load-carrying capacities of notched concrete beams subjected to various concentrated loads.
April 1, 2004... Abstract In solving various fatigue problems, the time-varying characteristics of cyclic loads on structures due to winds, waves, vehicles and so forth are often oversimplified by assuming the loading positions as fixed. In order to...

Mechanisms of crack propagation due to corrosion of reinforcement in concrete by AE-SiGMA and BEM.
April 1, 2004... Abstract Nucleation of corrosion cracking is analyzed by acoustic emission-simplified Green's functions for moment tensor analysis, by which crack kinematics of locations, types and orientations are quantitatively determined. These...

Localized failure of concrete in compression identified by AE method.
April 1, 2004... Abstract When concrete is subjected to uniaxial compression, the failure process is normally initialed from a localized zone. The localization of failure governs structural behaviors of concrete. In particular, the post-peak region of...

Quantitative damage evaluation of structural concrete by a compression test based on AE rate process analysis.
April 1, 2004... Abstract In recent years, deterioration of concrete structures has been widespread and become a social problem. Because the durability of concrete structures decreases easily due to such external effects, as carbonation and...

Improvements of AE technique using wavelet algorithms, coherence functions and automatic data analysis.
April 1, 2004... Abstract Acoustic emission technique (AET) is a useful method for the investigation of local damages in materials. One of the advantages compared to other techniques is the recording of the damage process during the entire load history...

Damage evaluation of railway structures by using train-induced AE.
April 1, 2004... Abstract For efficient maintenance of railway structures, nondestructive inspection for bridge substructures is developed by applying acoustic emission (AE) technique. As a newly proposed method, characteristics of secondary AE induced by...

Detecting voids in reinforced concrete slab by SIBIE.
April 1, 2004... Abstract The impact-echo technique is a nondestructive evaluation for defects in concrete structures by analyzing elastic waves due to a mechanical impact. In order to improve the technique, a new procedure to evaluate defects in concrete...

Calendar.(Calendar)
April 1, 2004... Calendar Event Date and venue 2004 SEMC 2004: The Second International 5-7 July Conference on Structural Engineering, Cape Town, South Africa...