... C873, C1202, and C666A, respectively. The air void parameters of the concrete are measured with air void analyzer, Rapid Air, and porosity (ASTM C642) tests. The results indicate that although concrete made with a low w / b (≤0.35) has low rapid chloride permeability (≤1320 C), it generally still...

...Liv M. Haselbach; Robert M. Freeman Pervious concrete is an alternative pavement material which may help reduce nonpoint source pollution problems. The porosity of pervious concrete is an important parameter used for both pavement and environmental design and is dependent on field placement...

..., porosity, strength, calcium aluminate hydrates Introduction There is a general agreement in the historic literature and standard speci cations that natural cements were highly hydraulic binders produced by calcining naturally occurring limestones rich in clay minerals below the sintering point...

... and thus the development of a scaffold requires an optimization process. The article reviews several scaffold fabrication processes to highlight the complexity of the field. Issues related to porosity, permeability, and the need for adequate diffusion characteristics are discussed. Several previous studies...

... characteristics of the reflection coefficients are influenced by the depth dependence of the porosity and the density. First, the relationships between the frequency characteristics of the reflection coefficients and the porosity variation with the depth are theoretically shown using Ocean Acoustics and Seismic...

... for the RCPT test. The effects of silica fume and CNI dosages on RCPT results were investigated and correlated to porosity trends evaluated by mercury intrusion porosimetry (MIP). The study reveals that measuring the migrating chloride front in concrete subsequent to the ASTM C 1202 test can eliminate the bias...

...F Montes; S Valavala; LM Haselbach Pervious concrete is emerging as an alternative material for paving to help curtail nonpoint source pollution problems. The porosity of pervious concrete is an important variable needed for pavement system design and for material comparisons. This paper researches...

... and chemistry of the surface of the scaffold and its interconnectivity. A range of techniques has been examined in relation to key measurements such as pore size and porosity. Since capillary flow porometry measures a pore solely at its most constricted point, the method is unable to provide characterisation...