Sign Up

Join TheConstructor to ask questions, answer questions, write articles, and connect with other people. When you join you get additional benefits.

Have an account? Sign In


Have an account? Sign In Now

Sign In

Log in to TheConstructor to ask questions, answer people’s questions, write articles & connect with other people. When you join you get additional benefits.

Sign Up Here

Join for free or log in to continue reading...


Forgot Password?

Don't have account, Sign Up Here

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

Have an account? Sign In Now

Sorry, you do not have a permission to ask a question, You must login to ask question. Get the paid membership

Join for free or log in to continue reading...


Forgot Password?

Don't have account, Sign Up Here
Get the paid membership
theconstructor.org Logo theconstructor.org Logo
Log inJoin

theconstructor.org

theconstructor.org Navigation

  • Articles
    • Recent Articles
    • Popular Articles
    • Write for us
  • Community
  • Categories
    • How To Guide
      • Material Testing Guide
    • Concrete
    • Building
      • Brick Masonry
      • Building Materials
      • Building Tips
    • Construction
      • Equipments
      • Management
    • Digital Construction
    • Geotechnical
      • Foundation
  • Case Studies
Search
Ask A Question

Mobile menu

Close
Ask a Question
  • Questions
  • Ask Questions
  • Write for us
  • Artificial Intelligence
  • Sustainability
  • Building
    • Brick Masonry
    • Building Materials
    • Building Tips
    • Formwork/Shuttering
  • Concrete
    • Concrete Admixtures
    • Cement
    • Concrete Cracks
    • Concrete Properties
  • Construction
    • Construction Equipments
    • Construction Management
    • Construction Project
    • Estimating & Costing
  • How To Guide
    • Material Estimation
    • Repair/Protection Guide
    • Material Testing Guide
    • Mix Design Guide
    • Rate Analysis
  • Geotechnical
    • Foundation Engineering
    • Ground Improvement
  • Structural Engineering
    • Strengthening of Structure
    • Structual Inspection
    • Structural Detailing
  • Surveying
  • Tips

Concrete

Home/Concrete/Page 3

Do you need to remove the ads? Get the paid membership

  • Recent Questions
  • Most Answered
  • Answers
  • No Answers
  • Most Visited
  • Most Voted
  • Random

Discy Latest Questions

Asked: September 22, 2020In: Concrete

Difference between OPC 53 &OPC 43 grade of cement according to the initial and final setting time of cement.

Komal Bhandakkar
Komal Bhandakkar

Komal Bhandakkar

  • 49 Questions
  • 255 Answers
  • 0 Best Answers
  • 2,050 Points
View Profile
Komal Bhandakkar AUTHOR

Difference between OPC 53 &OPC 43 grade of cement according to the initial and final setting time of cement.

  1. nikeetasharma

    nikeetasharma

    • 23 Questions
    • 303 Answers
    • 0 Best Answers
    • 2,680 Points
    View Profile
    nikeetasharma Guru
    Added an answer on November 28, 2020 at 1:15 pm

    OPC 43 :- The 43 grade OPC is the most popular general-purpose cement in the country today. The production of 43 grade OPC is nearly 50% of the total production of cement in the country. This OPC43 continues to gain strength after 28 days. OPC 53 :- The 53 grade OPC is higher strength cement to meetRead more

    OPC 43 :- The 43 grade OPC is the most popular general-purpose cement in the country today. The production of 43 grade OPC is nearly 50% of the total production of cement in the country. This OPC43 continues to gain strength after 28 days.

    OPC 53 :- The 53 grade OPC is higher strength cement to meet the needs of the consumer for higher strength concrete. As per BIS requirements the minimum 28 days compressive strength of 53 grade OPC should not be less than 53 Mpa. Therefore, there is a vast difference in setting time of these cements. It sets very quicker and has low initial setting time. These types of cement can be used where rapid hardening is not needed.

    See less
    • -3
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  • 34
  • 3 3 Answers
  • 36,141 Views
  • 0 Followers
Asked: July 23, 2020In: Concrete

What is Soundness Property of Cement?

vivek gami
vivek gami

vivek gami

  • 54 Questions
  • 16 Answers
  • 5 Best Answers
  • 93 Points
View Profile
vivek gami User

What is Soundness Property of Cement?

  1. nikeetasharma

    nikeetasharma

    • 23 Questions
    • 303 Answers
    • 0 Best Answers
    • 2,680 Points
    View Profile
    nikeetasharma Guru
    Added an answer on December 21, 2020 at 9:31 am

    Soundness property of cement is checked by Le-chatelier method as per IS:4031 (part-3) 1988.

    Soundness property of cement is checked by Le-chatelier method as per IS:4031 (part-3) 1988.

    See less
    • -1
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  • 0
  • 10 10 Answers
  • 3,754 Views
  • 0 Followers
Asked: September 22, 2020In: Concrete

Sugar is act as an accelerator or retarder in concrete?

Komal Bhandakkar
Komal Bhandakkar

Komal Bhandakkar

  • 49 Questions
  • 255 Answers
  • 0 Best Answers
  • 2,050 Points
View Profile
Komal Bhandakkar AUTHOR

Sugar is act as an accelerator or retarder in concrete?

  1. Preet Chovatiya

    Preet Chovatiya

    • 11 Questions
    • 81 Answers
    • 5 Best Answers
    • 858 Points
    View Profile
    Preet Chovatiya Learner
    Added an answer on November 26, 2020 at 10:20 pm

    Sugar meddles with the concrete restricting cycle in the solid. Note that solid and concrete are not equivalent. Concrete is made by consolidating concrete, water and a filler material called a "total," like rock or sand. Most concrete is produced using limestone and dirt. It responds with water toRead more

    Sugar meddles with the concrete restricting cycle in the solid. Note that solid and concrete are not equivalent. Concrete is made by consolidating concrete, water and a filler material called a “total,” like rock or sand. Most concrete is produced using limestone and dirt. It responds with water to frame a solidifying glue that ties the total together to create hard concrete. This solidifying cycle is called hydration.

    One hypothesis recommends that when the solid combination contains sugar, the sugar particles connect themselves to the hydrating solidify and repress the synthetic responses associated with hardening the material.

    sugar builds the centralizations of calcium, aluminum, and iron in concrete. The sugar particles consolidate with these metals to frame insoluble compound buildings that coat the concrete grains. A few key synthetic cycles that solidify the solid are then hindered. Hydration hinders the cycle and the solid takes more time to set. Thus, sugar is known as a retarder. Retarders increment the setting season of cement.

    Refined white sugar is extraordinary compared to other retarders. Lactose, the sugar found in milk, is a moderate retarder. Trehalose, a sugar created by different parasites, is non-hindering and doesn’t influence setting time.

    See less
    • 0
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  • 32
  • 4 4 Answers
  • 6,501 Views
  • 0 Followers
Asked: October 29, 2017In: Concrete

Why Variation in Strength of Concrete with Cement Content?

Gopal Mishra
Gopal Mishra

Gopal Mishra

  • 75 Questions
  • 44 Answers
  • 7 Best Answers
  • 577 Points
View Profile
Gopal Mishra

400 kgs of cement act result 70.3 7days result 57.6 28days result 68.9 is good result But 410kgs of cement act 67.26 7days one cube 49.87 second cube 22.93 third cube 25.33 average 32.7 And 28 days 58.9 is good ...

  • 1
  • 0 0 Answers
  • 1,232 Views
  • 0 Followers
Asked: November 28, 2020In: Concrete

What is the ACI recommended water mass without making any adjustment for coarse aggregate type?

Brandon Fifita
Brandon Fifita

Brandon Fifita

  • 1 Question
  • 0 Answers
  • 0 Best Answers
  • 10 Points
View Profile
Brandon Fifita User

What is the ACI recommended water mass without making any adjustment for coarse aggregate type?

  • 0
  • 0 0 Answers
  • 322 Views
  • 0 Followers
Asked: September 25, 2020In: Concrete

What is the difference between plain and reinforced concrete?

nikeetasharma
nikeetasharma

nikeetasharma

  • 23 Questions
  • 303 Answers
  • 0 Best Answers
  • 2,680 Points
View Profile
nikeetasharma Guru

Differentiate between plain and reinforced concrete. Among these to which one gives more strength?

  1. aviratdhodare

    aviratdhodare

    • 37 Questions
    • 252 Answers
    • 0 Best Answers
    • 480 Points
    View Profile
    aviratdhodare
    Added an answer on October 26, 2020 at 9:47 pm

    Basic differences PCC RCC Plain Cement Concrete R/f Cement Concrete It doesn’t carry ‘Steel’. It carries Steel. PCC is weak in tension loading while strong in compression loading. RCC is strong in both. PCC blasts on excessive loading & in an instant w/t giving any warning. RCC gives you enoughRead more

    Basic differences

    PCC RCC
    Plain Cement Concrete R/f Cement Concrete
    It doesn’t carry ‘Steel’. It carries Steel.
    PCC is weak in tension loading while strong in compression loading. RCC is strong in both.
    PCC blasts on excessive loading & in an instant w/t giving any warning. RCC gives you enough time to vacate the structure before collapse.

    What is PCC DPC and RCC in civil engineering | RCC and PCC

      Plain Cement Concrete R/f Cement Concrete
    Tension Steel tendons

    High tensile steel bars

    Included with tension

    Ordinary Mild Steel Deformed Bars

    No tension included

    Basic materials used Min grade of concrete

    Post-Tensioning → M30

    Pre-Tensioning  → M40

    to resist high stresses

     

    High strength steel to transfer large prestressing force

    Min grade of concrete → M20

    Steel                           → MS

    Effectiveness of member Entire section carries load Does not carries load
    Crack resistance High

    Cracks don’t occur under working loads

    Less
    Wt & suitability Light

    Heavy loads & longer spans

    Heavy

    Wt is more desired than steel

    Equiments Requires many specialized equiments

    Pulling jack, Post-tensioning pump, Master wedges, Anchhor head & bearing

    Doesn’t involve specialized equiments.
    Quality of steel reqd 1/3rd of RCC

    More strength & less c/s area

    More
    Deflection Very less More
    Load carrying capacity & Durability More Less
    Shock resistance More Less
    Yield As high as 2100 N/mm2 200 – 300 N/mm2
    Testing Testing of steel & concrete can be done while prestressing. No way of testing the steel & concrete.
    Cost Economical for span of 10m – 18m.

    As length of span gets ↑

    Cost % ↑

    C/s area of beam ↓

    Economical for span < 9m.
    See less
    • 12
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  • 38
  • 3 3 Answers
  • 65,289 Views
  • 0 Followers
Asked: September 19, 2020In: Concrete

what precautions should be taken during the cube test?

[Deleted User]
[Deleted User]

what precautions should be taken during the cube test

  1. aviratdhodare

    aviratdhodare

    • 37 Questions
    • 252 Answers
    • 0 Best Answers
    • 480 Points
    View Profile
    aviratdhodare
    Added an answer on January 5, 2021 at 1:53 pm

    The cube test is the Remove the specimen from water after specified curing time and wipe out excess water from the surface. Place the specimen in the machine in such a manner that the load shall be applied to the opposite sides of thecube cast. Align the specimen centrally on the base plate of the mRead more

    The cube test is the Remove the specimen from water after specified curing time and wipe out excess water from the surface. Place the specimen in the machine in such a manner that the load shall be applied to the opposite sides of thecube cast. Align the specimen centrally on the base plate of the machine.

    Precautions for Tests The water for curing should be tested every 7 days and the temperature of the water must be at 27+-2oC. Procedure for Concrete Cube Test Remove the specimen from the water after specified curing time and wipe out excess water from the surface.

    Cube Testing The cubes are generally tested at 7 & 28 days unless specific early tests are required, for example to remove a concrete shutter safely prior to 7 days. Usually 1 cube will be tested at 7 days and 2 cubes at 28 days, however this may vary depending of the requirements, check the design first.

    See less
    • 0
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  • 0
  • 2 2 Answers
  • 5,166 Views
  • 0 Followers
Asked: July 23, 2020In: Concrete

What is meant by Theoretical Thickness in Concrete?

Tips_and_tricks
Tips_and_tricks

Tips_and_tricks

  • 13 Questions
  • 15 Answers
  • 1 Best Answer
  • 685 Points
View Profile
Tips_and_tricks Learner

What is meant by Theoretical Thickness in Concrete?

  1. nikeetasharma

    nikeetasharma

    • 23 Questions
    • 303 Answers
    • 0 Best Answers
    • 2,680 Points
    View Profile
    nikeetasharma Guru
    Added an answer on December 21, 2020 at 1:51 pm

    The thickness of the concrete cover measure is usually part of the concrete quality control in modern construction so as to ensure that the thickness of the concrete cover in conformity with the specifications. The process of measuring the thickness of the concrete cover in structures was noted by tRead more

    The thickness of the concrete cover measure is usually part of the concrete quality control in modern construction so as to ensure that the thickness of the concrete cover in conformity with the specifications. The process of measuring the thickness of the concrete cover in structures was noted by the beginning of the corrosion, as the lack of concrete cover thickness increased the corrosion rate for corrosion as a result of chlorides or carbonation, where it expedited the propagation inside the concrete, causing the speed of steel corrosion as well as the lack of cover helps the propagation of moisture and oxygen, which are form the main basis for the corrosion process.

    See less
    • 0
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  • 2
  • 3 3 Answers
  • 1,509 Views
  • 0 Followers
Load More Questions

Sidebar

Explore

  • Questions
  • Ask Questions
  • Write for us
  • Artificial Intelligence
  • Sustainability
  • Building
    • Brick Masonry
    • Building Materials
    • Building Tips
    • Formwork/Shuttering
  • Concrete
    • Concrete Admixtures
    • Cement
    • Concrete Cracks
    • Concrete Properties
  • Construction
    • Construction Equipments
    • Construction Management
    • Construction Project
    • Estimating & Costing
  • How To Guide
    • Material Estimation
    • Repair/Protection Guide
    • Material Testing Guide
    • Mix Design Guide
    • Rate Analysis
  • Geotechnical
    • Foundation Engineering
    • Ground Improvement
  • Structural Engineering
    • Strengthening of Structure
    • Structual Inspection
    • Structural Detailing
  • Surveying
  • Tips

Footer

  • Ask Questions
  • Write for us
  • Popular Questions
  • Facebook
  • Instagram
  • Twitter
  • Telegram

© 2009-2021 The Constructor. All Rights Reserved.