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Effects of Three Binding Media on Moisture Movement in Compressed Earth Bricks

Effects of Three Binding Media on Moisture Movement in Compressed Earth Bricks

Project / Seminar Material
Reference ID: PS-3080-TM

DEDICATION

This research material titled “Effects of Three Binding Media on Moisture Movement in Compressed Earth Bricks” is dedicated to God for his enabling grace, and to all computer enthusiasts who contributed to make life a pleasant experience during my research documentation.

ACKNOWLEDGEMENT

I extend my sincere gratitude to all those who contributed to the completion of this project. Special thanks to my Supervisor (Name of your Supervisor), the Head of Department (Name of your HOD), the Lecturers in the department of Building Technology (BT), Book Authors and Profound Scholars of existing or related project material on “Effects of Three Binding Media on Moisture Movement in Compressed Earth Bricks” for their invaluable guidance, support, and expertise throughout the journey.

I am also grateful to your study area (mention any funding organizations, if applicable) for their financial assistance. This research would not have been possible without the encouragement and assistance of some stakeholders (mention any mentors, teachers, or colleagues). Additionally, I would like to acknowledge the understanding and patience of my family and friends during this endeavor. Your unwavering support has been a constant source of motivation. Thank you all for being part of this meaningful endeavor.

ABSTRACT

The major problem associated with cassava starch stabilized bricks is the high rate of water absorption. The effect of high rate of water absorption make the bricks to be soluble in water and limits its use for only internal partition walls not out doors. This study therefore evaluates the effects of three binding media on compressed stabilized earth bricks. The three binding media are Makuba, Cassava Starch and Cement. The research entails a laboratory investigation in which three sets of compressed earth bricks were produced which sum up to a total of 107 bricks cured by open air dry method. The control (CO) and the addition of three binding media in the laterite mix were fixed at binder combination (C1) and binder combination (C2).

The brick samples were tested for permeability, Sorptivity, water absorption, adsorption, compressive strength, abrasion resistance and density for the curing periods of 7, 14, 28 and 56 days. The results show that permeability of C2 has the minimum absorption rate of 7.90% at 56days. The Sorptivity of C2 had the least water rise of 5% at 10min. It was observed that the average water absorption of the test samples was 2.77% for C2 at 56days which conformed to ASTM C 62 (2010) Water Absorption test of brick samples. The compressive strength of C1 and C2 had increased the strength with 2.29 and 1.69 N/mm2 respectively.

The setting time results confirmed that makuba has a significant effect on accelerating the setting time of cement while cassava starch decelerate the setting time of cement. This research was able to assess the effects of the three binding media on moisture movement in brick samples and the high rate of water absorption was reduced and the bricks produced are suitable for outdoors used. It is recommended therefore that for walls exposed to moisture such as external walls and walls of bathrooms and kitchen the C2 binder combination should be incorporated.

Effects of Three Binding Media on Moisture Movement in Compressed Earth Bricks

CHAPTER ONE

1.0 Introduction

1.1 Background of the Study

In the modern brick construction practices, agricultural by-products are largely used as raw materials in laterite brick production. These have many benefits to the environment and bring about economic impact because of the cost of waste disposal which is increasing due to strict environment regulations. Waste utilization has been a common step taken in most countries in the world.Soil construction methods are used in 20%of urban buildings in Nigeria while this figure exceeds 90% in rural areas. Buildings are constructed entirely, or partially of soil, depending on location, climate, available skills, cost, building use and local tradition (Agib et al, 2001).

Laterite which is derived from the Latin word “later”meaning brick, was first used by Buchanan in 1807 for describing a red iron-rich material found in southern parts of India.

The soil colour can vary from red, brown, and violet to black, depending on the concentration of iron oxides(Agib et al, 2001).Laterites are highly weathered soils which contain large, though extremely variable, proportions of iron and aluminium oxides, as well as quartz and other minerals. They are found in abundance in the tropics and subtropics, where they generally occur just below the surface of grasslands or forest clearings in regions with high rainfall (Starry, 2007).Laterite is defined by Encarta English Dictionary as red tropical soil: a reddish mixture of clayey iron and aluminium oxides and hydroxides formed by weathering of basalt under humid, tropical conditions. Fermor (1981) classified various forms of laterite soils on the basis of the relative contents of the constituents (Fe, Al, Ti, Mn) in relation to Silica.

…

CHAPTER TWO

2.0 Literature Review

2.1 Introduction

This chapter focuses on the review of related literature. A literature review includes the current knowledge as well as theoretical and methodological contributions to a particular topic. It documents the state of the art with respect to the topic you are writing. It surveys the literature in the topic selected. In this research work the literature review includes the …

Summary Headlines for Effects of Three Binding Media on Moisture Movement in Compressed Earth Bricks



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