Formwork removal time for concrete members using nominal mixes at different temperatures (Record no. 21858)
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| 000 -LEADER | |
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| fixed length control field | a |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20241209101816.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 241209b xxu||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | AIKTC-KRRC |
| Transcribing agency | AIKTC-KRRC |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| 9 (RLIN) | 24703 |
| Author | Siddharth Shankar |
| 245 ## - TITLE STATEMENT | |
| Title | Formwork removal time for concrete members using nominal mixes at different temperatures |
| 250 ## - EDITION STATEMENT | |
| Volume, Issue number | Vol.98(4), Apr |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Thane |
| Name of publisher, distributor, etc. | ACC LTD |
| Year | 2024 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Pagination | 43-55p. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | A critical factor in the construction of reinforced cement concrete (RCC) structures is the timing of the safe removal of formwork. This time can be forecast using the maturity of concrete techniques and principles. Numerous academic publications suggest that formwork should be removed from the flexural members of RCC structures when concrete achieves at least 70 % of design strength. Early formwork removal might result in significant deformations or even failure. Nevertheless, delaying removal can cause construction delays that impact the profitability of the construction company and the use of the facility by the owner. Various countries’ codes, guidelines, and standards suggest stripping-time periods of different elements of RCC structures from twelve hours to thirty days. However, according to experiments conducted by authors, formwork for vertical concrete members must be stripped between 6 hours and 5.5 days, depending on the types of cement used and temperature ranges of 0°C to 45°C. Depending on the grade of the cement used and if the surrounding temperature is 45°C or 0°C, the time required to remove horizontal formwork ranges from 2.6 days to 124.4 days. Care must be taken when removing the formwork to prevent overstressing and damaging the concrete, especially when the ambient temperature is below 15°C. This is because many standard codes of practice are silent on the stripping time when the temperature is below 15°C. According to laboratory results conducted in this study at IIT Delhi, nominal mix cement concrete must have a compressive strength greater than 3.50 MPa to remove the vertical formwork in concrete made with ordinary Portland cement (OPC) and 3.25 MPa for Portland Pozzolana Cement (PPC). |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| 9 (RLIN) | 4690 |
| Topical term or geographic name entry element | Construction Engineering and Management (CEM) |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| 9 (RLIN) | 22607 |
| Co-Author | Jha, Kumar Neeraj |
| 773 0# - HOST ITEM ENTRY | |
| Title | Indian Concrete Journal - ICJ |
| Place, publisher, and date of publication | Thane ACC Limited |
| International Standard Serial Number | 0019-4565 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| URL | https://www.icjonline.com/editionabstract_detail/042024 |
| Link text | Click here |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Articles Abstract Database |
| Withdrawn status | Lost status | Source of classification or shelving scheme | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Total Checkouts | Barcode | Date last seen | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | School of Engineering & Technology (PG) | School of Engineering & Technology (PG) | Archieval Section | 09/12/2024 | 2024-1495 | 09/12/2024 | 09/12/2024 | Articles Abstract Database |