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7 LAB TESTS ON AGGREGATE TO CHECK QUALITY FOR USE IN ROAD WORK

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Tests on Aggregate Aggregate plays an important role in pavement construction. Aggregates influence, to a great extent, the load transfer capability of pavements. Hence it is essential that they should be thoroughly tested before using for construction. Not only that aggregates should be strong and durable, they should also possess proper shape and size to make the pavement act monolithically. Aggregates are tested for strength, toughness, hardness, shape, and water absorption. In order to decide the suitability of the aggregate for use in pavement construction, following tests are carried out: Crushing test Abrasion test Impact test Soundness test Shape test Specific gravity and water absorption test Bitumen adhesion test 1. Crushing Test Fig-1 Crushing Test Setup One of the model in which pavement material can fail is by crushing under compressive stress. A test is standardized by IS: 2386 part-IV and used to determine the crushing strength of aggregates. Th
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Management of Civil Engineering Construction

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Content   1. Practice of construction management Concepts and practice: definition of construction management, historical developments of construction management, comparison with construction/project management in other industries. Advantages and disadvantages of project management in practice, 2. Qualities of a better project manager Identification of key requirements : managerial skills, technical knowledge and abilities, personality and psychological factors, leadership, delegation, negotiation, decision-making and clarity of thinking, education and training for project managers, interaction and interfacing of internal teams, suppliers, sub contractors and external consultants and client. 3. Duties and responsibilities Identification of the client’s main objectives : understanding the client’s brief, appointing the design team, involvement with the main contractor, reports and recommendations, Design process management : co-ordination and control duri
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Concrete Testing

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WHY Test Concrete? Concrete testing is carried out for many reasons: Evaluation new materials or products Check compliance before, during or after construction Assess condition for change of use or service life prediction Failure investigation WHAT Can Be Tested? Concrete testing means more than cubes or cores: Component materials ; cement, pfa, ggbs, admixtures, coarse and fine aggregates, fibres, reinforcement, water Fresh Concrete , mortar and grout Hardened Concrete ; cast specimens : cubes , cylinders, prisms Existing structures ; drilled core or dust samples, sawn specimens, insitu non-destructive testing of structural members WHICH Tests? Concrete testing is loosely covered by four main headings: Physical/Mechanical Workability/Consistency Compressive/flexural/tensile strength Modulus of elasticity Density/water absorption/permeability Moisture/thermal movement Chemical Composition (cement content, w/c ratio) Presence of contaminants, e
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VB Lec note

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Download - Click Here Common Properties of Visual Basic Every object, such as a form or control, has a set of properties that describe it. Although this set isn't identical for all objects, some properties (such as those listed in the table below) are common to most controls. You can see every design-time property for a given control by looking at the Properties window in the IDE (some controls have properties that are available only at run-time – such as the SelectionStart and SelectionLength properties of the Textbox). Common Events of Visual Basic .NET Controls Events are what happen in and around your program. For example, when a user clicks a button, many events occur: The mouse button is pressed, the CommandButton in your program is clicked, and then the mouse button is released. These three things correspond to the MouseDown event, the Click event, and the MouseUp event. During this process, the Focus event for the CommandButton and the Leave event for whicheve
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Water Lec Slide

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Downlod - Click Here
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IT Kuppi

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IT Kuppi Download - Click Here
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Water and Environmental Engineering

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CHARECTERISTICS OF WASTEWATER Download - Click Here Physical characteristics 1. Solids          C omposed of floating matter, settleable matter, colloidal matter and        matter in solution. Total Suspended Solids (TSS) Ø Total suspended solids (TSS) include all particles suspended in water which will not pass through a filter. Ø As levels of TSS increase, a water body begins to lose its ability to support a diversity of aquatic  life. Ø Suspended solids absorb heat from sunlight, which increases water temperature and subsequently decreases levels of dissolved oxygen Total Dissolved Solids (TDS) TDS are passed through the filter. TDS comprised of colloidal and dissolved solids. Colloids are typically in the size range from 0.001 to 0.45 μ m Volatile Suspended Solids (VSS) Those solids that can be volatilized and burned off when the TSS are ignited. Volatile suspended solids data is critical in determining the operatio
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