Specification for wood wool permanent formwork and infill units for reinforced concrete floors and roofs

1971 ◽  
Keyword(s):  
Reinforced Concrete ◽  
Permanent Formwork

Fire Resistance Performance of Reinforced Concrete Column with Embedded Permanent Formwork Using Woodwool Panel

2014 ◽  
Vol 661 ◽  
pp. 111-117 ◽  
Author(s):  
Ahmad Zakiah ◽  
Ahmad Nursafarina ◽  
Azerai Ali Rahman ◽  
Hanizah Abdul Hamid ◽  
Mohammad Soffi Md Noh
Keyword(s):  
Reinforced Concrete ◽  
Cross Sections ◽  
Fire Resistance ◽  
Resistance Test ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Permanent Formwork ◽  
Fire Resistance Test ◽  
Slender Column ◽  
Resistance Performance

This paper reports the investigation on the fire resistance performance of reinforced concrete column with embedded permanent formwork from woodwool board (WWCB). A series of slender column embedded with and without WWCB with cross-sections 200 mm x 200 mm for column without WWCB and 300 mm x 300 mm with embedded 50 mm thick WWCB. The height of the slender column was 2000 mm. The fire resistance test was performed in accordance with BS 476-22:1987 for two (2) hours fire exposure. The fire resistance test for the embedded column with WWCB was classified as “good” in resisting fire and heat transfer.

scholarly journals STRUCTURAL‐TECHNOLOGICAL FACTORS OF EFFICIENCY OF FLOORS WITH PERMANENT REINFORCED CONCRETE FORMWORK

2005 ◽  
Vol 11 (2) ◽  
pp. 87-94
Author(s):  
Gediminas Marčiukaitis ◽  
Reda Bistrickaite
Keyword(s):  
Reinforced Concrete ◽  
Main Element ◽  
Technological Factors ◽  
Rigid Structure ◽  
Permanent Formwork

Problems associated with the development of reinforced concrete floors, the main element of a building, are considered in this article. Structural and technological factors effecting the advantages of floors with permanent formwork being the modern type of such structures are investigated. Rational diagrams, ways of manufacture and erection of these structures are presented. Essential peculiarities for design and analyses of such structures based on the investigations performed by the author and other investigators are indicated. This shall be taken into account for obtaining not only economical, but a reliable and rigid structure as well. Economical comparison of various types of floors is presented.

Technological Features of Designing Buildings Using a Permanent Formwork

2018 ◽  
Vol 931 ◽  
pp. 311-314
Author(s):  
Darya A. Protopopova ◽  
Ekaterina M. Kojevnikova
Keyword(s):  
Reinforced Concrete ◽  
Permanent Formwork ◽  
The Creation

In article the data on reinforced concrete emergence and technologies of projects construction with its application are provided. A detailed description of the erecting buildings technology based on a system of retained forms with the identification of positive and negative characteristics and modern materials is proposed for the creation of a permanent formwork.

scholarly journals Improving the manufacturability of floor slabs by pre-installing elements that partially replace reinforced concrete and formwork

2021 ◽  
Vol 258 ◽  
pp. 09019
Author(s):  
Seyran Akimov ◽  
Olga Balakchina ◽  
Elvira Akimova ◽  
Vladimir Malahov ◽  
Vasilij Shalenny
Keyword(s):  
Reinforced Concrete ◽  
Concrete Slab ◽  
Expanded Polystyrene ◽  
Simultaneous Increase ◽  
Resource Saving ◽  
Reinforced Concrete Slab ◽  
Floor Slab ◽  
Subsequent Performance ◽  
Permanent Formwork ◽  
Floor Slabs

The article discusses well-known and perspective constructive and technological systems for the installation of monolithic and precast-monolithic floor slabs of civil and industrial buildings. It shows examples and expediency of using all kinds of inserts made of plastic and other light materials and products for replacing a part of heavy monolithic reinforced concrete. An original resource-saving method for the installation of precast-monolithic floor slabs with a simultaneous increase in the degree of their construction readiness is proposed. This effect is achieved by reducing their own weight and the use of permanent formwork. Reduction in own weight of the precast-monolithic floor slab is ensured by the use of volumetric lightweight trapezoidal or rectangular inserts, preferably made of expanded polystyrene, during its installation. The use of permanent formwork will eliminate the need for the subsequent performance of labor-intensive finishing and insulation works. To confirm the effectiveness of using the proposed method of precast-monolithic floor slab installation, the operation of two floor slabs was modeled in the LIRA SAPR computing complex - the proposed reinforced concrete innovative slab and a solid reinforced concrete slab. Having analyzed the calculated forces, deformations and the corresponding consumption of reinforcement and concrete, comparative indicators were obtained for the proposed innovative slab and for a typical solid floor slab. As a result, significant savings in material and cost have been proven.

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