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.

Influence of technological factors on the properties of ultra-high-performance fiber reinforced concrete

2020 ◽  
pp. 135-147
Author(s):  
Igor Chilin ◽  
Keyword(s):  
Reinforced Concrete ◽  
High Performance ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Technological Factors ◽  
High Performance Fiber

Приведены результаты исследований и выполнена оценка влияния технологических факторов на реологические свойства самоуплотняющихся сталефибробетонных смесей, определены кратковременные и длительные физико-механические и деформативные характеристики сверхвысокопрочного сталефибробетона, включая определение его фактической морозостойкости.

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 RIGIDITY AND STRENGTH ANALYSIS OF REINFORCED CONCRETE BEAMS BY VARYING ELASTICITY MODULUS

2018 ◽  
pp. 86-93
Author(s):  
D. R. Mailyan ◽  
G. V. Nesvetaev
Keyword(s):  
Elastic Modulus ◽  
Reinforced Concrete ◽  
Elasticity Modulus ◽  
Concrete Beams ◽  
Concrete Strength ◽  
Reinforced Concrete Beams ◽  
Strength Analysis ◽  
Normal Stresses ◽  
Technological Factors ◽  
Beam Analysis

Relevance: The actual values of the elastic modulus used for manufacturing reinforced concrete products and concrete structures may differ significantly from those given in SNiP 63.13330. It is therefore interesting to estimate the rational value of the elasticity modulus of concrete for a particular design. Purpose: Calculation algorithm is proposed for normal stresses and deformations based on variation of the elasticity modulus of concrete by controlling prescribed and technological factors. Materials and methods: Ordinary concrete grades up to В120 grade with organic and mineral modifiers, reinforced concrete beams, modeling, numerical experiment, beam analysis by normal stresses and deformations. Results: The proposed beam analysis algorithm considers a possible change up to 2 times in the elasticity modulus of concrete. Conclusions: Calculations of the elasticity modulus ensure the beam rigidity, taking into account its reinforcement and cross-sectional parameters and strength for normal stresses at a concrete strength normalization corresponding to the elastic modulus, with regard to prescribed and technological factors. 

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.

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