A review of recycled aggregate in concrete applications (2000–2017)

There are number of water purification techniques but the adsorption is one of the most simplest, effective and economical method for wastewater purification. In this article a large number of solid adsorbents such as Natural adsorbents, Agricultural Wastes, Industrial wastes, Biomass, Nanoadsorbents: Carbon based nanomaterials, Nobel metal based nanomaterials, Metal oxide based nanomaterials, Spinel ferrite based nanomaterials, Nanocomposites, Dendritic polymers; Geopolymer cement have been discussed for the removal of different pollutants from waste water. Removal of Fluoride, Phosphate, Nitrate and Radionuclides from wastewater has also been reviewed in this article. Adsorption isotherm models, kinetic models, thermodynamic parameters and adsorption mechanism have also been discussed. The present article lists different type of adsorbents and reviews state-of-the-art of the removal of different pollutants from water. The efforts have been made to discuss the sources of contamination and toxicities of pollutants. Adsorption mechanisms responsible for pollutants removal by different adsorbents have been reviewed. Attempts have also been made to point out the advantages and drawbacks of adsorbents and the future research needs in the area of water purification by adsorbents.

Water purification by using Adsorbents: A Review

Construction and demolition waste generation and properties of recycled aggregate concrete: A global perspective

A comprehensive laboratory evaluation of the geotechnical and geoenvironmental properties of five predominant types of construction and demolition (C&D) waste materials was undertaken in th...

https://researchbank.swinburne.edu.au/file/9bbb0fa6-5557-4c65-ada9-7a360c041032/1/PDF (Accepted manuscript).pdf

Geotechnical and geoenvironmental properties of recycled construction and demolition materials in pavement subbase applications

A review of waste products utilized as supplements to Portland cement in concrete

Strength and permanent deformation properties of demolition wastes, glass, and plastics stabilized with foamed bitumen for pavement bases

In practice, it is quite common for soils to be mixed and compacted at moisture contents lower than the optimum moisture content (OMC) or lime content less than the optimum lime content (O...

Effect of Swell–Shrink Cycles on Volumetric Behavior of Compacted Expansive Clay Stabilized Using Lime

Highway-speed laser road profilometer devices have been in use for nearly twenty years and have virtually replaced the older response type measuring systems However, even with the inclusion of multiple lasers, GPS and hi-tech digital cameras, errors in the captured longitudinal road profile still exist This paper examines possible causes of longitudinal road profile errors and examines current practice in Australia to treat such errors More importantly, this paper presents a new and simple methodology to manipulate road profile data files to reduce these errors and better align such data files to allow an improved analysis of road profiles over time, especially at project level A series of procedural flowcharts have been presented to accurately align and synchronise road profile data at regular intervals The key to this new technique is the use of a simple road profile adjustment spreadsheet to calculate the realignment and synchronisation of the data points versus chainage once offset values are determined The spreadsheet then uses this information to generate MATLAB computer code, which is then used to very quickly extract relevant data and build a potential library of multiple new road profile data files, all with unique reconfigured headers It is these new road profile data files that are then used for the roughness analysis, producing better synchronised roughness data A statistical comparison has been made between current roughness data available in the State of Victoria (Australia) versus properly aligned and synchronised road profile data using this new method

A New Method for Aligning and Synchronising Road Profile Data for Better Road Roughness Growth Analysis

Since the early 1990's till early 2000s, the Changi East Reclamation Project in the Republic of Singapore involved the filling of approximately 200 million cubic meters of sand for the reclamation of a total land area of about 2500 hectares. The land reclamation works were carried out in 5 phases. The edges of the newly reclaimed land in the project were either retained by vertical retaining structure or coastal shore protection rock bund with suitable slopes and stability berms. Land reclamation was carried out using fill materials derived from dredging granular material from the seabed at the borrow source. Prefabricated vertical drains with surcharge were used extensively in the project to accelerate the consolidation process. In addition, the hydraulically placed sandfill was densified by using various deep compaction methods. Geotechnical instruments were required to monitor the settlement and pore pressure during the consolidation of soft soil. During the implementation of the 5 phases of la...

https://researchbank.swinburne.edu.au/file/683bd558-ed53-46bb-a85b-da380941f96d/1/PDF (Published version).pdf

Field instrumentation case study at a pilot site in the Changi land reclamation project

Biosolids are defined as appropriately treated sewage sludge which consists of untreated organic slurry residue derived from wastewater treatment processes. The use of biosolids and other waste materials in a sustainable manner is currently being investigated in several countries around the world. This paper reports on results obtained from field investigations to assess the viability of using biosolids as stabilised fill for road embankments. Field tests were recently carried out on biosolids stockpiles at the Western Treatment Plant in Victoria, Australia. The field tests included field vane shear tests, standard penetration tests (SPT) and dynamic cone penetrometer (DCP) tests. Undisturbed tube samples and disturbed bulk samples were also collected for future laboratory testing. Geotechnical parameters from the field test were obtained and compared with the existing local road authority specification for fill material.

https://researchbank.swinburne.edu.au/file/f29f9018-b8ef-47b9-b4a8-295dd1809d90/1/PDF (Published version).pdf

Arul Arulrajah

Papers

Strength and permanent deformation properties of demolition wastes, glass, and plastics stabilized with foamed bitumen for pavement bases

Effect of Swell–Shrink Cycles on Volumetric Behavior of Compacted Expansive Clay Stabilized Using Lime

A New Method for Aligning and Synchronising Road Profile Data for Better Road Roughness Growth Analysis

Field instrumentation case study at a pilot site in the Changi land reclamation project

Field testing to determine the suitability of biosolids for embankment fill