“Study of Quality Assurance and Quality Management System in Multistroyed RCC Building”

Quality is one of the important aspects for construction projects. The level of success of construction projects depends upon the quality performance. Quality management provides the environment within related tools, techniques, procedures that can be deployed effectively leading to success of construction project. Though quality management is important at every stage of the project but quality management at execution stage contribute significantly on final quality outcome of construction projects. The QMS (Quality Management System) in construction refers to quality planning, quality assurance and Quality control

An Economical, Eco friendly and Technical Assessment of Cement Replaced by Marble Dust in Permeable Concrete

The main objective of this project is to investigate the possibility of utilizing waste marble dust (MD) in cement and permeable concrete production. The research work was divided into four sections. The first section deals with the properties of cement modified with marble dust (marble dust blended cement), whereas the second section discusses the properties of concrete contained marble dust as a cement replacement. The replacement ratios which have been studied were 0.0%, 5.0%,, 10.0% , and 15% by weight. Water to powder ratio (w/p) or water to cement ratio (w/c) were 0.35 and 0.40 in case of cement replacement. Physical, mechanical and chemical properties of cement and concrete modified with marble dust were investigated. The third section this introduction to permeable concrete roads reviews its applications and engineering properties, including environmental benefits, structural properties, and durability. The fourth section deals with checking of compressive strength of traditional permeable concrete and cement replaced by marble dust in permeable concrete. Checking economy of cement replaced by marble dust in permeable concrete

Greywater treatment for reuse: comparison of reuse options using analytic hierarchy process

The objective of the present study was to: (i) examine the performance of two-stage sand filtration and the effect of coagulants on greywater (GW) characteristics; (ii) assess the quality of treated GW for reuse; and (iii) compare reuse options using the analytic hierarchy process (AHP). Four treatment options were examined on site. The first option was related to two-stage sand filtration (TSF) and the other three options were related to coagulation/flocculation using alum, polyaluminium chloride (PAC), and ferric chloride (FeCl3). The setup was constructed close to the GW source of a student hostel located at Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat. Treated GW was safe for reuse in restricted access area irrigation (as per United States Environmental Protection Agency standards), for discharge into land for irrigation, and for industrial cooling (as per Central Pollution Control Board standards in India). All four treatment options were compared using AHP. Comparison was made in two ways: (1) comparison on the basis of the effluent quality produced and (2) comparison on the basis of removal of parameters. The selection string on the basis of the effluent quality was TSF-PAC treatment–alum treatment–FeCl3 treatment, and that on the basis of removal of parameters was TSF-PAC treatment–FeCl3 treatment–alum treatment.</jats:p

Evaluation of Heterogeneous Photocatalytic Treatment for Reuse of a Hotel's Greywater

Reuse of greywater for non-potable purpose such as irrigation, toilet flushing and groundwater recharge has been evaluated and applied widespread after advanced treatment processes. Specifically advanced oxidation processes present alternative option to integrate with biological treatment as prior or post-treatment to remove recalcitrant organic matters of emerging concern in greywater. This study focuses on the efficiency assessment of heterogeneous photocatalysis (PC) for oxidative degradation of real greywater samples collected at a hotel in Antalya, Turkey, by means of dissolved organic carbon (DOC) and UV254 absorbance removals that correspond the mineralization and degradation rates, respectively. Increasing TiO2 dose from 0.1 to 1 g/L enhanced DOC removal rates. Reduction of suspended solids from greywater using 0.45 microfilters increased DOC removal from 27 to 35% during PC treatment