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Category: Civil Engineering

Experiments under department of civil engineering

Identification of Minerals

Identification of Minerals

Introduction Most minerals are easily identified by their physical properties such as lustre, colour, hardness, streak, cleavage and parting, fracture and tenacity, magnetism, radioactivity and reaction with acid. This experiment is important since it gives the knowledge and information of the properties of minerals and this knowledge helps in choosing the right materials for specific purposes in service.  During this process of identification, the following properties should be noted: 1. Lustre: This refers to the response of minerals to light….

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Identification of Igneous Rocks

Identification of Igneous Rocks

Introduction      Summarily, rocks are naturally occurring substances; coherent, solid aggregates of one or more minerals or mineraloids. They are composed of grains of minerals. Minerals are homologous solids formed from a chemical compound arranged in orderly manner. These minerals forming rocks are held together by chemical bonds.There are three major types of rocks: Igneous Rocks Metamorphic Rocks Sedimentary Rocks In this section, the identification of igneous rocks is discussed. Igneous rocks are also called magmatic rocks. As this name implies,…

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Determination of Workability of Concrete by Compaction Factor Method

Determination of Workability of Concrete by Compaction Factor Method

Introduction      The compacting test is one methods used to determine the workability of fresh concrete (other methods include Slump Test and Vee-bee Consistometer Test). The workability of concrete is a property which describes the ease of working on the concrete. In other words, it is a measure of how easily fresh concrete can be placed and compacted. This test is believed to produce more accurate results compared to slump test. However, like slump test, accuracy in the results reduces with increase in aggregate…

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Unconfined Compression Test

Unconfined Compression Test

Introduction      Unconfined compression test is a quick test to obtain the shear strength parameters of cohesive (fine grained) soils either in undisturbed or remolded state. It is also known as uniaxial compression test. Unconfined compression test is a special case of a triaxial test, where confining pressure is zero. This test does not require the sophisticated triaxial setup and is simpler and quicker test to perform as compared to triaxial test. In this test, a cylinder of soil without lateral…

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Turbidity of Water Sample

Turbidity of Water Sample

Introduction      Water is said to be turbid, in simple terms, if it is “dirty”. In a turbid water, light transmission is inhibited. Thus, turbidity can be defined as the cloudiness or haziness of a fluid. This cloudiness is caused by suspended solids in the water. Suspended solids are almost always present in water and they consist of many different particles of varying sizes. Some of the particles are large enough and heavy enough to eventually settle to the bottom of…

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Total Solids in Water

Total Solids in Water

Introduction      The total solids in a water sample refer to the material residue left in the vessel after evaporation of a sample and its subsequent drying in an oven at a defined temperature. Total solids can be further broken down into total suspended solids and total dissolved solids. Objective(s) of the Experiment      The test is carried out in order to determine the amount of total solids in water. Equipments and Materials Needed Evaporating dish Measuring Cylinder Weighing balance Oven desicator Procedures Heat a…

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