• How Long Does Concrete Take To Set | Concrete Setting
    How Long Does Concrete Take To Set | Concrete Setting

    In standard industrial cases, full strength concrete is recognized at 28 days. at seven days, you should have concrete that is cured to 70 full strength or greater. but to answer the question of, how long does concrete take to set concrete setting time is generally 24 to 48 hours.

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  • The Initial Setting Time For Ordinary Portland Cement As
    The Initial Setting Time For Ordinary Portland Cement As

    As per is specifications, the maximum final setting time for ordinary portland cement should be; according to is specifications, the compressive strength of ordinary portland cement after threedays should not be less than; initial setting time of cement for asbestos cement products should be not less than.

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  • Normal Consistency Or Standard Consistency Of Cement
    Normal Consistency Or Standard Consistency Of Cement

    Take care that the time of gauging is not less than 3 minutes, not more than 5 minutes and the gauging will be completed before setting occurs. the gauging time will be counted from the time of adding the water to the dry cement until starting to fill the mould. fill the vicat mould with this cement paste, the mould resting upon a nonporous plate.

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  • Indian Standard Ordinary Portland Cement, 43
    Indian Standard Ordinary Portland Cement, 43

    B) pozzolanic activity index shall not be less than 90 percent when tested as per 10 of 1s 1727 c) loss on ignition shall not be more than 5.0 percent when tested as per is 1727 vi) metakaolin 5 a) silicon dioxide (sio 2) plus aluminium oxide (al 2 o 3) in percent by mass shall not be less than 94.0 percent when tested as per is 1727.

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  • The Initial Setting Time Of Rapid Hardening
    The Initial Setting Time Of Rapid Hardening

    Building materials. : home civil engineering building materials. the initial setting time of rapid hardening cement should not be less than. a. 30 min. b. 1 hour.

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  • Test To Check Initial And Final Setting Time Of Cement
    Test To Check Initial And Final Setting Time Of Cement

    Initial and final setting time we need to calculate the initial and final setting time as per is: 4031 (part 5) – 1988. to do so we need vicat apparatus conforming to is: 5513 – 1976, balance, whose permissible variation at a load of 1000g should be 1.0g, gauging trowel conforming to is: 10086 –.

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  • Initial Setting Time Of Cement For Asbestos Cement
    Initial Setting Time Of Cement For Asbestos Cement

    Initial setting time of cement for asbestos cement products should be not less than. a. 30 minutes. b. 50 minutes. c. 75 minutes. d. 90 minutes.

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  • Rapid Hardening Cement | Properties, Uses, Advantages
    Rapid Hardening Cement | Properties, Uses, Advantages

    Initial setting time: 30 minutes; final setting time: 600 minutes; the specific surface is greater than 3250 cm 2 gm. rhc is lighter than opc. the curing period for rhc is less. uses. rapid hardening cement is mostly used in construction of road where the traffic cannot be halted for long period of time.

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  • Difference Between Opc And Ppc Cement Civil Engineering
    Difference Between Opc And Ppc Cement Civil Engineering

    Initial strength is higher than ppc. ppc has higher strength than opc over a longer period of time. 3. heat of hydration. generates more heat than ppc in hydration reaction which makes it less suitable for mass casting. it has a slow hydration process and thus generates less heat than opc. 4.

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  • Civil Engineering Mcqs With Answers Concrete Technology
    Civil Engineering Mcqs With Answers Concrete Technology

    Its expansion is not more than 10 mm for unaerated cement: c. its initial setting time is not less than 30 minutes: d. all of the above view answer workspace report discuss in forum. 87. the compressive strength of an ordinary portland cement (1 : 3 cement mortar cube) after 7 days test should not be less than.

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  • Important Points To Ordinary Portland Cement(Opc
    Important Points To Ordinary Portland Cement(Opc

    As per is specification, initial setting time should not be less than 30 minutes and final setting time is 10 hours. the strength of cement decreases on storing. for the testing of the compressive strength of cement, 50 mm size cubes were made up in 1:3 proportions. normal consistency is about 30. early strength is due to finer grinding.

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  • Significance Of Initial And Final Setting Time Of Cement
    Significance Of Initial And Final Setting Time Of Cement

    Initial setting time of cement possess a primary role in strength and it is mandated that cement paste is placed in position before it crosses initial setting time, that is approximately 30 minutes. it should not be disturbed until the final setting time is reached that is around 600 minutes to attain complete rigidity and tensile strength for.

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  • Initial &Amp; Final Setting Time (Is:4031Part 51988
    Initial &Amp; Final Setting Time (Is:4031Part 51988

    Initial setting timet 2t 1. final setting timet 3t 1, where, t 1 time at which water is first added to cement. t 2 time when needle fails to penetrate 5 mm to 7 mm from bottom of the mould. t 3 time when the needle makes an impression but the attachment fails to do so. precautions. release the initial and final setting time needles gently.

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  • Most Important Aspects Of Concreting Process | Checklist
    Most Important Aspects Of Concreting Process | Checklist

    Most important aspects of concreting process | checklist for site supervision of concreting work || civilengineerstraininginstitute civilguruji most important.

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  • 10 Thoughts From This Week's Champions League Action
    10 Thoughts From This Week's Champions League Action

    The champions league rumbled on this week with another entertaining slate of action. below, we dissect the biggest talking points from matchday 4 in europe's premier clubodoi.

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  • Setting Time Test Slideshare
    Setting Time Test Slideshare

    With portland cement and rapid hardening cement the normal initial setting time should not be less than 30 minutes and the final setting time should not be more than 10 hours. with quick setting cement the initial setting time should not be less than 5 minutes and the final setting time should not be more than 30 minutes. 3. apparatus 1.

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  • The Properties Of Ordinary Portland Cement And Physical
    The Properties Of Ordinary Portland Cement And Physical

    In terms of specific surface should not be less than 2250 cm gm. 2 setting time. a period of 30 minutes as minimum setting time for initial setting and a maximum period of 600 minutes as maximum setting time is specified by is code, provided the tests are conducted as per the procedure prescribed by is 2691967. 3 soundness.

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  • Initial And Final Setting Time Of Cement | Effects | How
    Initial And Final Setting Time Of Cement | Effects | How

    Significance of calculating initial and final setting time of cement:. well, after mixing cement with water, it takes time to place the cement paste in position, initial setting time possess a primary role in strength & it is mandated that cement paste or concrete is placed in position before it crosses initial setting time. i.e.,30mins.

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  • C Tech 11 Objective Questions | C Tech 11 Multiple Choice
    C Tech 11 Objective Questions | C Tech 11 Multiple Choice

    Question 50 : for ordinary portland cemet: option1 : inital setting time should not be less than 5 minutes and final setting time more than 20 days option2 : initial setting time should not be less than 30 minutes and final setting time more than 10 hours option3 : initial setting time should not be less than 10 hours and final setting time should not be more than 30 hours.

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  • Question Is ⇒ The Initial Setting Time For Ordinary
    Question Is ⇒ The Initial Setting Time For Ordinary

    Question is ⇒ the initial setting time for ordinary portland cement as per is specifications should not be less than, options are ⇒ (a) 10 minutes, (b) 30 minutes, (c) 60 minutes, (d) 600 minutes, (e) , leave your comments or download question paper.

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  • Q: Initial Setting Time Of Cement For Asbestos Cement
    Q: Initial Setting Time Of Cement For Asbestos Cement

    Question: initial setting time of cement for asbestos cement products should be not less than. options. a : 30 minutes. b : 50 minutes. c : 75 minutes. d : 90 minutes. click to view correct answer. previous || next. building materials part 1 more questions. polymerization helps to.

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  • Rapid Hardening Cement All You Need To Know Civil
    Rapid Hardening Cement All You Need To Know Civil

    Rapid hardening cement clinkers are grounded in a finer (min 3250 cm 2 gm) manner than opc(2250 cm 2 gm). setting time. initial setting time not less than 30 mins. within this period, solidification begins. final setting time not more than 600 mins. during this time, the mixture attains sufficient hardness. weight. rhc is lighter than opc.

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  • What Is Fineness Of Cement | Fineness Test Of Cement
    What Is Fineness Of Cement | Fineness Test Of Cement

    Result: the standard value of fineness of cement should have fineness less than 10 or fineness of cement should not be more than 10 as per is recommendations. read more: initial and final setting time of cement test, procedure & result.

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  • Civil Engineeringbuilding Materials Important 478 Mcq
    Civil Engineeringbuilding Materials Important 478 Mcq

    The initial setting time for ordinary portland cement as per is specifications should not be less than (a) 10 minutes (b) 30 minutes (c) 60 minutes (d) 600 minutes answer: option b question no. 93 rapid hardening cement attains early strength due to (a) larger proportion of lime grounded finer than normal cement.

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  • Setting Of Cement Initial And Final Setting Time Of Cement
    Setting Of Cement Initial And Final Setting Time Of Cement

    Setting time of cement. some types of cement set quickly, within a few minutes whereas others may take comparatively longer time.. however, the initial setting time of cement is 30 minutes for ordinary portland cement. and the final setting time of cement is 600 minutes or 10 hours on average for ordinary portland cement.

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  • Rapid Hardening Cement – Manufacture, Properties And
    Rapid Hardening Cement – Manufacture, Properties And

    The cement clinkers in rapid hardening cement are grounded in a finer (min 3250 sqcmgm) manner than opc (2250 sqcmgm). setting time initial time not less than 30 minutes, solidification begins within this time period. final setting time not more than 600 minutes, the mixture attains sufficient hardness during this time period. weight.

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  • Cement Test | 8 Test On Cement | Cement Testing Methods
    Cement Test | 8 Test On Cement | Cement Testing Methods

    The initial and final setting time of cement is calculated using the vicat apparatus conforming to is: 5513 – 1976. apparatus. balance vicat apparatus stop watch; gauging or mixing trowel; glass plate; enamel tray; result. as per standards, the initial setting time of cement should be less than 30 min for opc cement.

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  • The Initial Setting Time For Ordinary Portland Cement As
    The Initial Setting Time For Ordinary Portland Cement As

    The initial setting time for ordinary portland cement as per is specifications should not be less than. 189) the initial setting time for ordinary portland cement as per is specifications should not be less than. a) 10 minutes. b) 30 minutes. c) 60 minutes. d) 600 minutes. answer is: 30 minutes.

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  • The Initial Setting Time For Ordinary Portland Cement As
    The Initial Setting Time For Ordinary Portland Cement As

    The initial setting time for ordinary portland cement as per is specifications should not be less than. for the manufacture of plywood, veneers are placed so.

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  • The Initial Setting Time For Ordinary Portland Cement As
    The Initial Setting Time For Ordinary Portland Cement As

    The initial setting time for ordinary portland cement as per is specifications should not be less than. the initial setting time for ordinary portland cement as per is specifications should not be less than. 10 minutes. 30 minutes.

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