Faculty Publications
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Item Use of concrete wastes as the partial replacement of natural fine aggregates in the production of concrete(Springer, 2019) Saha, S.; C, C.; Vinay, K.Due to rapid development of construction industries in various dimensions, demand for construction materials is also gaining high momentum. Therefore, availability of natural sources of construction materials is going to be in decreasing trend to cope up with the high demand. Again currently, quantity of construction and demolition waste is also going too high day by day. Reuse of these construction and demolition waste is one of the promising solutions to protect natural fine aggregates. This study aims at investigations the possibility of the usage of these construction and demolition wastes to produce the fresh concrete with desirable properties. Natural fine aggregates (river sand) are replaced by the recycled fine aggregates by the different percentage levels for the production of fresh concrete. A comparative interpretation on the strength characteristics of the concrete produced with Ordinary Portland Cement and Portland Pozzolana Cement is also presented and discussed in this paper. © Springer Nature Singapore Pte Ltd. 2019.Item Use of foundry sand as partial replacement of natural fine aggregate for the production of concrete(Springer, 2019) Saha, S.; C, C.; More, A.P.The scarcity of natural fine aggregate becomes prominent in the present scenario due to high consumption of natural fine aggregate as the demand for concrete is increasing day by day. As a result, environmental degradation also becomes very significant. In this experimental study, an effort has been made to study the feasibility of using foundry sand as partial replacement for natural fine aggregate to produce concrete with desired properties. Physical and mechanical properties of the produced concrete were studied by incorporating foundry sand, 10, 20, 30, and 40% of the mass of total fine aggregate in the mixes. For achieving the desired strength of concrete mixes, 30% replacement of natural fine aggregates by foundry sand was observed in this work to be considered for the production of fresh concrete. Use of certain percentage of foundry sand as alternative for natural fine aggregate to produce concrete will lead to protect the natural resources, save the environmental system, and promote sustainability in concrete industries. © Springer Nature Singapore Pte Ltd. 2019.Item Mechanical properties of recycled aggregate concrete produced with Portland Pozzolana Cement(Techno Press technop2@chollian.net, 2016) Saha, S.; C, C.The quantity of construction and demolition waste has been greatly increasing recently. It causes many problems to the environment. For this reason, demolition waste management becomes inevitable in order to overcome the environmental issues. The present study aims to evaluate the effects of using recycled coarse aggregate, which is generated from construction and demolition waste, on the properties of recycled aggregate concrete. An experimental investigation on the strength characteristics of concrete made with recycled coarse aggregate is presented and discussed in this paper. In this study, Portland Pozzolana Cement (fly ash based) is used instead of ordinary Portland cement. The results of this investigation show the possibility of the use of recycled coarse aggregates in the production of fresh concrete. Use of demolition waste as coarse aggregate will lead to a cleaner environment with a significant reduction of the consumption of natural resources. A comparative study on the strength characteristics of recycled aggregate concrete made with Ordinary Portland Cement and Portland Pozzolana Cement is presented and discussed in this paper. © 2016 Techno-Press, Ltd.