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CB Sowmya - Answers

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  1. Asked: July 29, 2020In: Concrete

    What are the Types of Mineral Admixtures in Cement?

    CB Sowmya

    CB Sowmya

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    CB Sowmya User
    Added an answer on July 30, 2020 at 11:15 pm

    There are two types of admixtures: Mineral admixtures Chemical admixtures Mineral admixtures are mostly solids. Chemical admixtures are mostly liquids. The most common mineral admixtures are: Fly ash Ground Granulated Blast furnace Slag (GGBS) Rice husk ask Metakaolin Silica fume Sugarcane bagasse oRead more

    There are two types of admixtures:

    • Mineral admixtures
    • Chemical admixtures

    Mineral admixtures are mostly solids. Chemical admixtures are mostly liquids.

    The most common mineral admixtures are:

    • Fly ash
    • Ground Granulated Blast furnace Slag (GGBS)
    • Rice husk ask
    • Metakaolin
    • Silica fume
    • Sugarcane bagasse or straw ash
    • Palm oil fuel ash

    The mineral admixtures are added majorly to modify the strength of the concrete and increase the compressive strength.. Since all these mineral admixtures are byproducts of some industrial process which otherwise would be dumped into landfills, it is also beneficial to the environment.

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  2. Asked: July 29, 2020In: Construction

    What are the Types of members in Prestressed Structures?

    CB Sowmya

    CB Sowmya

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    CB Sowmya User
    Added an answer on July 30, 2020 at 11:09 pm

    There are three types of members in prestressed concrete TYPE 1 - Tension is not allowed; Cracking is not allowed. TYPE 2 - Tension is allowed (within permissible stresses) ; Cracking is not allowed. TYPE 3 - Tension is allowed; Cracking is allowed within permissible stresses.   Type 3 membersRead more

    There are three types of members in prestressed concrete

    TYPE 1 – Tension is not allowed; Cracking is not allowed.

    TYPE 2 – Tension is allowed (within permissible stresses) ; Cracking is not allowed.

    TYPE 3 – Tension is allowed; Cracking is allowed within permissible stresses.

     

    Type 3 members are the most economical members because they allow cracking and thus use the elastic property of the materials.

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  3. Asked: July 29, 2020In: Construction Site Related

    What are the type of Soil Stabilization of Highway Embankment?

    CB Sowmya

    CB Sowmya

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    CB Sowmya User
    Added an answer on July 30, 2020 at 10:59 pm

    There are four types of stabilization Mechanical Chemicals Biological Using polymers Mechanical: This includes compacting the soil to physically change the properties of the soil. The compaction can be either vibrating or dynamic. Another way to mechanically stabilize the soil is to remove excess waRead more

    There are four types of stabilization

    1. Mechanical
    2. Chemicals
    3. Biological
    4. Using polymers

    Mechanical:

    This includes compacting the soil to physically change the properties of the soil. The compaction can be either vibrating or dynamic.

    Another way to mechanically stabilize the soil is to remove excess water from the soil.

    Chemical:

    The soil is stabilized by adding chemicals to the soil. The chemicals include cement, fly ash, lime, GGBS, bitumen, and pozzolana

    Biological:

    Planting trees will reduce erosion in highways close to rivers and canals. Trees will hold the soil particles together creating optimal soil porosity and retaining water.

    Using Polymers:

    These include using geopolymers, textiles, and other synthetically woven materials that have high strength.

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  4. Asked: July 29, 2020In: Geotechnical Engineering

    What is the Average Density of Soil?

    CB Sowmya

    CB Sowmya

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    CB Sowmya User
    Added an answer on July 30, 2020 at 10:58 pm

    The average density of soil is 2.65 grams per cubic centimeter = 2.65 g/cu.cm

    The average density of soil is 2.65 grams per cubic centimeter = 2.65 g/cu.cm

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  5. Asked: July 20, 2020In: Transportation

    Which are the best method for traffic survey according to verious location?

    CB Sowmya

    CB Sowmya

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    CB Sowmya User
    Added an answer on July 30, 2020 at 10:58 pm

    The traffic surveys are done in three stages namely Household Interview Survey Traffic Survey Roadside Interview (Origin Destination) Survey Traffic Count Survey Screen Line Survey Traffic Count Survey of Major Intersection Travel Speed Survey Parking Survey  Bus Transport Survey Bus Traffic Count SRead more

    The traffic surveys are done in three stages namely

    1. Household Interview Survey
    2. Traffic Survey
        • Roadside Interview (Origin Destination) Survey
        • Traffic Count Survey
        • Screen Line Survey
        • Traffic Count Survey of Major Intersection
        • Travel Speed Survey
        • Parking Survey
    3.  Bus Transport Survey
        • Bus Traffic Count Survey
        • Bus Origin Destination Survey
        • Bus Passenger Interview Survey
        • Public Transport Firm Interview Survey
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  6. Asked: July 27, 2020In: Miscellaneous

    What are the problems associated with prestressed concrete piles?

    CB Sowmya

    CB Sowmya

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    Added an answer on July 29, 2020 at 6:18 pm

    The disadvantages are as follows Skilled labors are required to design the piles Prestressed structure is made up of high strength materials hence higher are the losses due to shrinkage. They are costlier than normal construction In the process of prestressing, additional equipments such as jacks arRead more

    The disadvantages are as follows

    • Skilled labors are required to design the piles
    • Prestressed structure is made up of high strength materials hence higher are the losses due to shrinkage.
    • They are costlier than normal construction
    • In the process of prestressing, additional equipments such as jacks are required.

    Prestressed piles are cast in the factory or yard and then installed in a site. Since they are precast, they have the disadvantages associated with the precast technology.

    • They are heavy and difficult to transport
    • Skilled labors are required
    • Special equipments are required for the erection of the piles
    • They produce noise pollution during installation
    • It is difficult to extend them if needed.
    • Extra reinforcement has to be provided to cut down the handling stresses and transport stresses

    Thank you!

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  7. Asked: July 27, 2020In: Civil Engineering Jobs

    What is the design life of a residential apartment building in India?

    CB Sowmya

    CB Sowmya

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    Added an answer on July 29, 2020 at 6:17 pm

    The design life of an RCC structure is generally taken as 75 years. But that may increase or decrease based on the following factors. It is dependent on the quality of construction, quality of materials used, weather conditions, seismic conditions, maintenance of the building, etc. From the questionRead more

    The design life of an RCC structure is generally taken as 75 years.

    But that may increase or decrease based on the following factors. It is dependent on the quality of construction, quality of materials used, weather conditions, seismic conditions, maintenance of the building, etc.

    From the question, when buying apartments, the builders will not disclose the genuine construction practice that was followed. So in order to be sure, it is best to test the structure using Nondestructive tests.

    To know more about the nondestructive tests used to find the strength of the structure,

    https://theconstructor.org/structural-engg/estimating-life-of-a-residential-building/369/

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  8. Asked: July 27, 2020In: Construction

    Which are top Multinational Construction Companies operating in India?

    CB Sowmya

    CB Sowmya

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    CB Sowmya User
    Added an answer on July 29, 2020 at 6:17 pm

    In no particular order, Larsen and Toubro Technip Tata Projects SPCl Lanco Infratech Gammon India Limited  

    In no particular order,

    1. Larsen and Toubro
    2. Technip
    3. Tata Projects
    4. SPCl
    5. Lanco Infratech
    6. Gammon India Limited

     

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