In order to achieve a fair description of radon transport through concrete certain information is needed on the concrete structure, porosity and permeability, on processes causing the transport of radon, on radon’s interaction with environment, factors favouring the generation of radon, etc. The concrete characteristics (that depend on its composition and especially on the W/C ratio) which infl...

Noise is continuously treated as an annoyance to humans and indeed commotion contamination shows up within the environment, causing inconvenience. This likewise interesting engineering tactic that inclines develop this noise proliferation. The basics of sound-retaining proliferation, sound-absorbing properties, its variables were rarely considered by previous researchers. Thus, acoustic perform...

This study examined the probability of (a) being placed in a disciplinary alternative education setting for mandatory versus discretionary reasons and (b) returning within the same year among an ethnically diverse sample (African American, Caucasian, Hispanic) of middle and high school students (N=270). Participants were compared based on ethnicity, gender, grade level, and special education st...

Stone-base, a material often used for base construction in flexible pavements, have recent studies been shown to be suitable as an all – concreting aggregate. This study investigated the crushing, flexural and split tensile strengths well other mechanical properties of stone-base laterized concretes (SBLC). Normal river sand fine aggregate was partially replaced by laterite while coarse proport...