Making of High Performance Concrete, which is chiefly used as a building material in the major and mega infrastructure and projects, is a very big task. Though the recent advancements have dominated the barriers of the preparation of high performance concrete, the use of green materials such as Meta kaoline, Silica Fume, Fly Ash and Rice Husk Ash is limited. Apart from the green materials, numerous conventional and mineral admixtures are available in the current market, which enhances the quality and performance of the concrete such as Metakaoline, Alccofine and Silica Fume etc. The quality of concrete mixture is evaluated through various mechanical properties like compressive strength, flexural strength and split tensile strength and various durability tests like rapid chloride penetration test (RCPT), sorptivity test, chloride resistance test, accelerated corrosion test and sea water attack test are carried out to analys the performance of HPC. The prime objective of this research study is to evaluate the structural strength of high performance concrete by utilizing green and pozzolanic material as supplementary cementitious material. This research study primarily focuses on the development of empirical correlations for estimating the 7 days and 28 days compressive strength with sufficient workability diverse range of water/cement ratio for concrete mixes. Detailed laboratory investigations are performed covering almost all available supplementary cementitious materials like Meta
Risk can be described as the absence of information when a decision is to be made at any time throughout a process. The construction industry is often considered as complex and defragmented due to working in a project based format; with a unique product and a process where there are times when decisions need to be made with insufficient information. Therefore, proper risk management processes can be vital to minimizing risks, maximizing opportunities and securing a successful project process This master thesis has been conducted at a large Swedish construction company that houses both a constructing unit and a residential development unit. Consequently, the focus of this thesis has been on analysing the risk management process when a residential project is both developed and constructed by the same company. The purpose of this master thesis is to describe and analyse risk management in a project based organization within the construction industry. The thesis aims to provide a better understanding of how risk management is used in practice but also what underlying factors that can affect risk management processes. The study will include both the perspective of the developer and the constructor; as well as their separate and joint processes facilitating risk management. In regards to the purpose of this thesis, a general risk management model has been used to provide a framework for analysis. This model consists of four steps: risk identification, risk assessment, risk mitigation and risk monitoring.
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