Comparative Analysis Of The Strength Of Concrete Made From Various Aggregate

CHAPTER ONE

 

• INTRODUCTION

This work was obligated to present in one. The fundamental and practical information in the filed of the comparative analysis of the strength of concrete made from various aggregate which may be useful to people involve in civil and structural engineering and particularly, those that found pleasure in the design and related structure.

Due to high cost of sand in the market the  comparative analysis of strength of concrete  made from various aggregate play an important role in cost of transportation, thus the cost of material.

Enugu state case a case study has quite an abundance of washed gravel, which are usually picked out from stream, black and surface gravel present in every part of the state though, in many construction sites, mostly within Enugu metropolis crushed/granites stones got from Abalikik and Nkalagu are mostly used, in the rural areas, washed gravel are mostly used because of its availability and cheapness compared to crouched stones.

The aim of this project therefore, is to compare the compressive strength produced b those washed, black, surface and granite stone got from different areas and to see if there is any way, these coarse aggregate can be interchanged during construction especially when her is shortage of any one of the materials.

• LITERATURE REVIEW

Teychene D/C2, published the results of investigation at the building research establishment on crushed rock aggregates in concrete in 1978.it appears that the performance of concrete made with a particular aggregate could not be assessed from standard test on the aggregate it was suggested that to asses its performance concrete should be made with the aggregate and shrinkage and absorption characteristics measured.

Madu R.M of the University of Nigeria, published his work on the “performance of lateitic aggregate and road chippings in 1980. this paper studies the properties relevant to the use of laterictic aggregates road chipping, and concrete aggregates and compared the results to those obtained by the use of an igneous control aggregate. The strength growth pattern of concrete made with lateritic stones, the variation of the  tensile strength of the concrete (both flexural and split) the reproductively of the strength patterns and the influence of the iron and aluminum oxide contents for the aggregates on concrete  made with them investigated in detail to assess the suitability of lateristic stones and crusts as concrete aggregates and road chippings.

Still on lateritic rocks, Gidigasu, MD revealed that through careful selection and identification using standard and modify aggregate testing procedures, some lateritic rocks could be accepted for use as concrete aggregates. The major limitation to their use .he emphasized appeared to be the potential long term deterioration in certain environment.

 

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