August 2019

Recent advances in non- destructive testing of concretes and structures: An outlook

Non Destructive Testing (NDT) of materials and structures is one of the most common forms of quality control. The Nigerian infrastructure systems continue to deteriorate due to lack of integrity checks on some identified projects in both public and private sector. Analysis of various sectors in Nigeria revealed that there are abandon projects in building and constructions industry while major oil and gas facilities...

Author(s): Erhimona Okiemute Grace and Andrew John  

October 2019

Enhancing the strength of sandcrete blocks using coarse aggregates

This current article explores the possibility of adding aggregate (10 mm size) to sandcrete mixes in order to enhance the strength of the sandcrete blocks. Four different kinds of mixes were made; the first one was used as a reference without the addition of course aggregate, and in the remaining three, course aggregates were added in percentages of 5, 10 and 15% by volume of the reference mix. Laboratory experimental...

Author(s): Coffie H., Adzivor E. K. and Afetorgbor E. K.  

December 2019

Reliability assessment of progressive failure of a low rise framed building on weak soil-foundation interaction

A 4-storey reinforced concrete framed buildings was modelled in 3-dimensional analysis with the same sections and loadings for both rigid and weak foundations respectively using ETABS and FORM5 Softwares in accordance with Euro code provisions. The weak foundation was initially analysed and designed as a fixed column-foundation joint and later re-analysed and redesigned as a hinged column-foundation joint. The ETABS...

Author(s): Olorunfemi Lateef Onundi, Ketkukah, Titus Saul, Alkali, Abba Mohammed and Omenihu, Fidelis Chukwunenye  

December 2019

Variability of visible and near-infrared (vis-NIR) diffuse spectral reflectance of cement-based solidified/ stabilized pre-treated oil-based drill cuttings

This study investigated the effects of solidification/stabilization (S/S) variables on visible and near-infrared (vis-NIR) spectral reflectance of solidified/stabilized low-temperature thermally desorbed (pre-treated) oil-based drill cuttings. Partial least squares (PLS) regression models were also developed to rapidly estimate the levels of total petroleum hydrocarbon (TPH), Cu, and Ba present in the...

Author(s): Perez P. Araka, Reuben N. Okparanma, Josiah M. Ayotamuno, Said Nawar and Abdul M. Mouazen