Investigations on stone dust and ceramic scrap as aggregate
replacement in concrete


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ABSTRACT

Conservation of natural resources and preservation of environment is the essence of any
development. The problem arising from continuous technological and industrial
development is the disposal of waste material. If some of the waste materials are found
suitable in concrete making, not only cost of construction can be cut down, but also safe
disposal of waste materials can be achieved. So in the present paper, an attempt has been
made to assess the suitability of stone dust and ceramic scrap in concrete making. In the
laboratory stone dust has been tried as fine aggregate in place of sand and ceramic scrap
has been used as partial/full substitute to conventional coarse aggregate in concrete
making.

Introduction

In the last decade, construction industry has been conducted research on the utilization of
waste products in concrete. Some of waste products are fly ash, rice husk, saw dust,
discarded tires, plastic, glass rock, steel slugs, stone dust and ceramic. Each waste
product has its specific effect on properties of fresh and hard concrete. The use of waste
products in concrete not only makes it economical but also solves some of the disposal
problems. The crushed rock flour can be used to replace the natural sand in concrete
(Nagaraj and Banu, 1996). The use of crushed ceramic aggregate can be used to produce
lightweight concrete, without affecting strength (Kanaka sabai et. al, 1992). The stone
dust can be used as alternative material in place of sand in concrete based on grain size
data (Babu shanker et al,1992).

Preparation of Specimens

The quantities of the constituents of the concrete were obtained from the Indian Standard
Mix Design method (IS: 10262,1982). The variation of strength of hardened concrete
using stone dust as fine aggregate and ceramic scrap as partial / full replacement is
studied by casting cubes, cylinders and prisms. The concrete was prepared in the
laboratoryusing
mixer. The cement, fine aggregate and coarse aggregate were first
mixed in dry state to obtain uniform colour and calculated amount of water obtained from
workability test was added and the whole concrete was mixed for five minutes in wet state.

Conclusions

The following conclusions are drawn from the present investigations carried out:
Stone dust can be effectively used as fine aggregate in place of conventional river sand,
in concrete.