International Journal of Recent Development in Civil & Environmental Engineering [ISSN: 2581-4117 (online)]

Quality Assessment of some Commercially Packaged Drinking Water in Ado Ekiti (Ekiti State, Nigeria) Metropolis

Okunade, O.A

Water is an abundant and renewable natural resources, globally used for domestic and industrial purposes. This study investigated some physicochemical, elemental and microbial properties of 10 (Ten) commercially packaged drinking water in Ado Ekiti, Ekiti State, Nigeria. The 10 different packaged water (Poli water, JC table water, Ayanfe water, Olamide pure water, Ige water, Waleola water, Yemi water, Femlad water, Sparkleen water and Iroyinayo water) were sourced directly from the production site of each water producing outfit at different locations in Ado Ekiti metropolis within 2 days and in the morning. Temperature and pH of the water samples were determined on the same day of sample water collection. pH ranged from 5.80 - 8.30 while the temperature ranged between 21-24⁰C. The samples odour and taste were unobjectionable while the colour was 5.0 NTU. Dissolved oxygen was 105-155 mg/l, total solids (73-402 mg/l), dissolved solids (123-570 mg/l), suspended solids (47-362 mg/l). Total alkalinity was 28-120 mg/l and chloride content (12.2-251 mg/l). Ammoniacal nitrogen was not detected in the water samples and total acidity was nil. The elemental analysis of these samples (mg/l) showed Copper was 0.03-0.22, magnesium (34-55.3), zinc (0.74-1.89) and calcium content (58.2-67.8) respectively. Iron, lead, mercury, chromium, arsenic and aluminium was not detected in any of the samples. Microbial examination of water samples indicated that total viable count was 1 -12 cfu/ml, the presumptive coliform test was negative, implying the samples had no gas producing organisms while the coliform count was nil.

The results of this study were within WHO standards for potable water, indicating that all were suitable for human consumption and of no health implication.

Experimental Performance of Concrete using Sugarcane Bagasse Ash (SCBA) and Coal bottom ash (CBA)

J. Saibaba

The fundamental aims of sustainable development are the conservation of natural resources, the reduction of environmental pollution, and the efficient use of waste materials. These aims may be achieved in concrete construction by partially replacing cement and aggregates with agrowaste such as sugarcane bagasse ash and rice husk ash, as well as industrial waste such as copper slag, steel slag, fly ash, and coal bottom ash, to name a few examples. The major goal of this study was to see how utilising Sugarcane Bagasse Ash (SCBA) as a partial substitute for cement in concrete and Coal Bottom Ash (CBA) as a partial replacement for fine aggregates affected the final product. The major emphasis of this study is on the properties of concrete, such as compressive strength and workability. Furthermore, when exposed to greater temperatures, the thermal stability of all concrete mixes is evaluated in this study. Twenty-five different concrete mixes were made with variable quantities of SCBA (0%, 5%, 10%, 15%, and 20%) replaced with cement and varying levels of CBA (0%, 10%, 20%, 30%, and 40%) replaced with fine aggregates. The ratio of water to cement in every mix was set at 0.55. Concrete's workability was assessed immediately after it was prepared, while its compressive strength was assessed 14, 28, and 60 days after it had been allowed to cure. Based on the results of the testing, it has been concluded that a blend of 10% SCBA and 10% CBA is the best option. According to the conclusions of this investigation, adding SCBA and CBA to concrete has no effect on its thermal properties.

Topics and Progress in BIM Research in the Construction Field: Mapping of Knowledge for Analysis

Avula Srinivasulu

For domestic and international research on BIM technology, the CNKI and WOS databases serve as data retrieval sources. Keyword co-occurrence analysis, which is based on scientometrics and bibliometrics, is used to quantitatively analyze the hotspots and frontiers. This reveals evolutionary trend. According to the findings, there have been roughly three stages of industry, both domestically as well as internationally. Upcoming the works were depends on combining research frontiers and research hotspots and analyzing their evolution trends: Research is conducted using BIM technology, the Internet of Things, and cloud computing, with a particular emphasis over management and VR application.