Bio-healing for micro-crack treatment in cementitious materials: Toward a quantitative assessment of bacterial efficiency

Bio-healing is a promising approach to enhancing natural self-healing and thus completely heal large micro-cracks (> 200 ?m) in cementitious materials. The aim of this research is to better understand bio-healing of cementitious materials in order to accelerate the healing kinetics and maximize sealing efficiency of large micro-cracks. The bio...

Experimental studies of self-healing cementitious materials incorporating mineral admixtures

In order to limit the release of CO2 produced in cement manufacturing, clinker (the major cement component) is often partially replaced by mineral admixtures like blastfurnace slag. The use of mineral admixtures presents different advantages such as the recycling of industrial waste and the improvement of different material properties ...

Computer program to calculate the filter parameters for spectral shaping

A program is described that computes the parameters of a linear filter useful for spectral shaping. The computed filter , when fed with a random signalof constant spectral density (white noise) will produce a signal with any specified spectral density. The program accepts data in the form of the values of the required spectrum at given...

Smoothing of digital-to-analog converted data in digital data systems

A brief review of the properties of sampled signals is given, and used to describe systems which contain digital components. It is shown that the errors in such digital data systems are of two types, one due to the inaccuracies in the algorithm programmed, and the other due to the reconstruction process necessary to convert the digital data to...