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Asked: July 27, 2020In: Construction

What is the effect of coarse aggregate size in compressive strength of concrete?

Kuldeep Singh
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What is the effect of coarse aggregate size in compressive strength of concrete?  

  1. nikeetasharma

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    Added an answer on December 21, 2020 at 5:55 pm

    Strengths than larger sized coarse aggregates. Cook observed that the difference in compressive strengths due to aggregate size is increasingly larger with a decreasing water-to-cement ratio and increasing test age. The smaller sized coarse aggregate also increases the flexural strength of the concrRead more

    Strengths than larger sized coarse aggregates. Cook observed that the difference in compressive strengths due to aggregate size is increasingly larger with a decreasing water-to-cement ratio and increasing test age. The smaller sized coarse aggregate also increases the flexural strength of the concrete.

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Asked: July 29, 2020In: Construction Site Related

What is Stucco Plaster? 

civl engineer
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What is Stucco Plaster?

  1. nikeetasharma

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    Added an answer on December 21, 2020 at 9:09 am

    Stucco is applied by an industry specialist to the interior and exterior walls. An expert can apply the plaster manually or by using a machine. This portland cement plaster can be used on concrete wall systems, or on a frame structure. It is used for siding, or to cover concrete, cinder block, clayRead more

    Stucco is applied by an industry specialist to the interior and exterior walls. An expert can apply the plaster manually or by using a machine. This portland cement plaster can be used on concrete wall systems, or on a frame structure. It is used for siding, or to cover concrete, cinder block, clay brick or adobe.

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Asked: July 22, 2020In: Structural Engineering

What is the diffrence between lap length and development length?

Vivek Patel
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What is the diffrence between lap length and development length?

  1. nikeetasharma

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    Added an answer on September 30, 2020 at 5:44 pm

    lap length is required when bars placed short of their required length (due to nonavailability of longer bars) need to be extended. lap length is to be provided to safely transfer the load. Development length is provided to transfer the load from steel to concrete. It is also known as anchorage lengRead more

    lap length is required when bars placed short of their required length (due to nonavailability of longer bars) need to be extended. lap length is to be provided to safely transfer the load.

    Development length is provided to transfer the load from steel to concrete. It is also known as anchorage length.

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Asked: July 15, 2020In: Geotechnical Engineering

What is Creep in Soil Mechanics?

vivek gami
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What is Creep in Soil Mechanics? Why it is important?

  1. Kuldeep Singh

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    Added an answer on July 15, 2020 at 11:35 pm

    Creep in soil is pretty much similar in concept to creep in general. Only the manifestation and consequences are different in different materials and can be very peculiar in soil. Creep in soil is the time dependant development of shear strains and/or volumetric strains in a soil mass in the  stateRead more

    Creep in soil is pretty much similar in concept to creep in general. Only the manifestation and consequences are different in different materials and can be very peculiar in soil.

    Creep in soil is the time dependant development of shear strains and/or volumetric strains in a soil mass in the  state of a constant effective stress for a prolonged period of time.

    It is also sometimes referred to as the gradual loss of cohesion over a prolonged period of time in soil.

    Unlike concrete, where creep results in deflection and cracking, creep in soil  to may lead to long term settlement, movements of slopes, gradual loss of soil from slopes or shear failure.

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Asked: July 29, 2020In: Concrete

What are the Types of Mineral Admixtures in Cement?

Tips_and_tricks
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What are the Types of Mineral Admixtures in Cement?

  1. Komal Bhandakkar

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    Added an answer on November 17, 2020 at 5:49 pm
    This answer was edited.

    First, let me clear this one of the basic concepts that when we use any extra ingredient besides the ingredient of concrete for improving its some property, it is known as an admixture. When we use any extra ingredient in cement to improve some cement property, it is called an additive. Important: ARead more

    First, let me clear this one of the basic concepts that when we use any extra ingredient besides the ingredient of concrete for improving its some property, it is known as an admixture.

    When we use any extra ingredient in cement to improve some cement property, it is called an additive.

    Important: Additives are added to the cement and not the admixture.


    Thank You.

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Asked: February 12, 2020In: Construction

Sketches of types of scaffolding used in building construction

jeremih
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Can i get sketches of types of scaffolding?

  1. nikeetasharma

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    Added an answer on November 26, 2020 at 1:59 pm
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    The sketches of scaffoldings are : Trestle scaffolding   2.Steel scaffolding 3.Patented scaffolding 4. Suspended scaffolding 5. Cantilever scaffolding 6. Single scaffolding 7. Double scaffolding 8. Kwikstage scaffolding  

    The sketches of scaffoldings are :

    1. Trestle scaffolding

     

    2.Steel scaffolding

    3.Patented scaffolding

    4. Suspended scaffolding

    5. Cantilever scaffolding

    6. Single scaffolding

    7. Double scaffolding

    8. Kwikstage scaffolding

     

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Asked: July 10, 2020In: Concrete

What is bacterial concrete?

vivek gami
vivek gami

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What is bacterial concrete? Which are the area of application of bacterial concrete?  

  1. nikeetasharma

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    Added an answer on December 21, 2020 at 12:08 pm

    The principle of bacteria based self healing concrete is that carbonate precipitating bacteria are added into the concrete during the mixing process. When cracking occurs, the bacteria will be activated to precipitate CaCO3 to in-situ heal concrete cracks. Bacillus Megaterium bacteria were used in cRead more

    The principle of bacteria based self healing concrete is that carbonate precipitating bacteria are added into the concrete during the mixing process. When cracking occurs, the bacteria will be activated to precipitate CaCO3 to in-situ heal concrete cracks.

    Bacillus Megaterium bacteria were used in concrete and results shows 24% increase in compressive strength. The deposition of calcium carbonate in concrete by Bacillus Sphaericus improves the durability of concrete.

    Therefore, bacterial concrete is a product that will biologically produce limestone to heal cracks that appear on the surface of concrete structures.

    These self healing agents can lie dormant with in the concrete for up to 200 years.

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Asked: July 20, 2020In: Structural Engineering

What is fatigue in any structural member?

vivek gami
vivek gami

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What is fatigue in any structural member?

  1. nikeetasharma

    nikeetasharma

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    nikeetasharma Guru
    Added an answer on December 17, 2020 at 3:08 pm

    Concrete fatigue refers to the phenomenon of rupture under repeated loadings, each of which is smaller than a single static load that exceeds the strength of material.

    Concrete fatigue refers to the phenomenon of rupture under repeated loadings, each of which is smaller than a single static load that exceeds the strength of material.

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