Papers by Author: Vilas G. Meshram

Abstract: Modern concrete is now common to use admixture (chemical or mineral), pozzolana’s for modifying different properties of concrete in fresh and hardened state. This paper presents the salient features of the development of Phosphogypsum(PG) Cement Concrete and discuss the improvements affected in the properties of concrete with the use of PG as an admixture compared to the plain or conventional cement concrete. This was accomplished by an experimental study by preparing different grades of cement concrete mix M20, M25 and M30 using PG as an admixture by replacing 5% of OPC and few durability parameters were investigated. This includes studying the compressive strength, workability, air entrainment and moisture movement by wetting and drying method. Study were conducted for modifying the properties of the concrete, controlling the concrete production cost, to overcome the scarcity of cement, and finally the advantageous disposal of industrial wastes.

Abstract: In present work, first the multi-storeyed building was analysing taking medium site condition in zone II. Sa/g and Base shear for that building was calculated from IS 1893:2002 (Part 1).After that site specific ground response analysis is carried out for Amravati and Nagpur region soil sites. For development of site specific response spectrum ProSHAKE software is used ProSHAKE is based on one dimensional geotechnical site response model. Site response study is usually carried out using the geotechnical data or Geophysical data (shear wave velocity). Basic aim of present work is to study local site effects on seismic analysis of multi-storeyed Buildings, for this purpose local soil conditions are considered. In the present work various local sites in Amravati and Nagpur region are studied.

Abstract: ABSTRACT It is a very well known fact that the use of fly ash in masonry and concrete make the structures durable. Properties of Fly Ash depend upon coal source. For acceptability of fly ash in cement, mortar and concrete various specifications and standards are available. The Indian standard IS 3812: 2003(Part I and Part II) expects some physical and chemical properties similar to world standards, while differs in some, like lime reactivity test. As a part of research activity the authors have collected 23 different fly ash samples from various hoppers of three power stations near Nagpur. The samples were tested as per most of the provisions of IS 3812 and tests specified in IS 1727. Test results are compared with major world standards and specifications. Gain of strength is the most important character of fly ash, especially from the usage in cement and concrete. The paper discusses comparison of various standard specifications and interpretation of pozzolanic reactivity.