COMPARATIVE ANALYSIS OF THE STRENGTH OF CONCRETE MADE FROM VARIOUS AGGREGATE
CHAPTER ONE
1.1 Introduction
Concrete is being defined by Wikipedia as a composite material composed mainly of water, aggregate and cement often additives and reinforcement are included in the mixture to achieve the desired physical properties of finished material. In high-strength concrete, the aggregate particles as well as the interface undergo failure, clearly contributing to overall strength as the strength of the cement paste constituent of concrete increases, there is greater compatibility of stiffness and strength between the normally stiffer and stronger coarse aggregate and the surrounding mortar.
Due to the strength/high cost of various aggregate in the market the comparative analysis of strength of concrete indifferent aggregate have revealed that one can definitely substituted in various aggregate by using the mixture design of ration in different aggregate in building to reduce the mixture ration of aggregate or used any of the aggregates. A great effort has been made throughout this work although it is limited in scope to assess their suitability as stand and concrete aggregate.
As a prelude to other parts of this study, this chapter will discuss the background upon which this study was initiated, the statement of problems that led to this study, the Aim and Objectives of the study. Others are Significance of the study, Scope of work, Limitations of the Study and Definition of technical terms.
1.2 Statement of Problems
Investigation revealed that compression test results show that high-strength concrete containing basalt produces slightly higher compressive strengths than high-strength concrete containing limestone, while normal-strength concrete containing basalt yields slightly lower compressive strengths than normal-strength concrete containing limestone. The compressive strength of both normal and high-strength concrete is little affected by aggregate size.
High-strength concrete containing basalt and normal-strength concrete containing basalt or limestone yield higher compressive strengths with higher coarse aggregate contents than with lower coarse aggregate contents. The compressive strength of high-strength concrete containing limestone is not affected by aggregate content.
1.3 Aim and Objectives of Study
The aim of the study is to comparatively analyze the Strength of Concrete Made from Various Aggregate. In achieving this aim, the following specific objectives were laid out as follows:
- To determine the strength of concrete cube in difference aggregates in soil laboratory with a view to have on alternative in the building construction;
- To effect the reduction of rising in the building construction by using deference aggregates; and
- To determine the analysis in the existing aggregates and evaluate it’s suitability for use as a good building of aggregates by means of various laboratory tests.
1.4 Significance of Study
This study will be of immense benefit to civil engineers, and other researchers who intend to know more on this study and can also be used by non-researchers to build more on their research work. This study contributes to knowledge and could serve as a guide for other study.
1.5 Scope of Study
The study of this research is focused on the Effect of Coarse Aggregate Sizes on Concrete in Nigeria Construction Site.
1.6 Limitations of the Study
During the course of this study, many things militated against its completion, some of which are:
- Time Constraint: The time frame given to accomplish this project was very short due to school academic calendar and it was carried out under pressure which made the researcher not to implement some necessary features.
- Research material: availability of research material is a major setback to the scope of the study.
- Frequent power failure: This made the researcher append more money on fuel to ensure sustainable power.
- Financial Constraint: Insufficient fund tends to impede the efficiency of the researcher in sourcing for the relevant materials, literature or information and in the process of data collection (internet).
1.7 Particle Size Distribution
It has been stated that maximum size and grading of aggregates are very important find aggregate result in uneconomical mixes where as very coarse − grained soils result in harsh unworkable mixes.
The mean size or grading of many aggregate can be obtained by passing the materials in a set of sieves consisting usually of certain standard sizes. The sieves number is been expressed as the member per inches.
The sieve analysis should also conformed to the B. S. 410of 1969 for sieves for purpose of testing the procedure involve in making sieve analysis should also conform to the B. S. standard method that is involved in carrying out the sieve analysis of time and coarse aggregate.
The aggregate were carefully washed to eliminate dust particles and some other of organics mater present in it so the aggregate should be dust and dust free of any kind. After the wash of aggregate were kept to dry in a place for 24 hours with kept help of electric oven.
The particles were weight and recorded the % retained passing sieve at each times the graph below shows the result got from each case.
CHAPTER TWO
2.0 Literature Review
2.1 Introduction
The review of relevant literature is the main topic of this chapter. A literature review covers theoretical and methodological contributions to a certain issue in addition to the state of knowledge at the time of writing. It provides information about the state of the art in relation to the subject you are writing about. It examines the body of work on the chosen subject. The literature evaluation in this study comprises the …
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