FLEXURAL STRENGTH OF EXPANSIVE CONCRETE BEAM WITH VARIOUS CURING CONDITIONS

2007 ◽  
Vol 63 (3) ◽  
pp. 459-467
Author(s):  
Kunihiro ISHIDA ◽  
Isamu YOSHITAKE ◽  
Hironobu HAMAOKA ◽  
Sumio HAMADA
Keyword(s):  
Flexural Strength ◽  
Concrete Beam ◽  
Curing Conditions ◽  
Expansive Concrete

scholarly journals The effect of curing conditions on the mechanical properties of SIFCON

2021 ◽  
Vol 20 (1) ◽  
pp. 37-51
Author(s):  
Kubilay Akçaözoğlu ◽  
◽  
Adem Kıllı ◽  
Keyword(s):  
Mechanical Properties ◽  
Flexural Strength ◽  
Steel Fiber ◽  
Impact Resistance ◽  
Strength Properties ◽  
Fiber Reinforced Concrete ◽  
Curing Conditions ◽  
Accelerated Curing ◽  
Aspect Ratios ◽  
Curing Method

In this study, the effect of curing conditions on the mechanical properties of slurry infiltrated fiber reinforced concrete (SIFCON) was investigated. For this purpose, SIFCON samples containing 4% and 8% steel fiber with two different aspect ratios were produced. The samples were subjected to three different curing types, namely standard, dry and accelerated curing methods. Ultrasonic wave velocity, flexural strength, fracture toughness, compressive strength, impact resistance and capillary water absorption tests were performed on the samples. The highest flexural strength was found to be achieved in the samples with an aspect ratio of 55 and a content of 8% steel fiber. The most suitable curing method was determined as the standard curing method and the best flexural strength was achieved at the rate of 8%. According to the test results, the best strength properties were achieved in the samples exposed to the standard curing method. In addition, the samples exposed to the accelerated curing method showed satisfactory values. The accelerated curing method can be used as an alternative in SIFCON production especially in applications requiring mass production.

Durability of Cement Based Mortars Containing Crystalline Additives

2018 ◽  
Vol 382 ◽  
pp. 246-253 ◽  
Author(s):  
Nikol Žižková ◽  
Lenka Nevřivová ◽  
Matěj Lédl
Keyword(s):  
Flexural Strength ◽  
Degradation Process ◽  
Secondary Crystallization ◽  
Curing Conditions ◽  
Research Results ◽  
New Information ◽  
Cement Mortars

The paper focuses on the study of the durability of cement mortars made with secondary crystallization additives. It investigates the influence of the crystalline additives on the degradation process of cement mortars exposed to gaseous CO2and freezing cycles. The specimens with were tested for compressive and flexural strength at the following ages and after being treated by the following curing techniques: 28 days, 180 days and 25 freezing cycles, 28 days and 180 days in gaseous CO2. In order to explain the obtained results and to gain new information about the microstructure of the cement mortars being studied, the SEM sampling and RDA analysis were performed. The research results confirm an improvement in the resistance of cement based mortars using crystalline additives against cyclic freezing as well as gaseous CO2. An important parameter that influences the effectiveness of the crystalline additive is the curing conditions during the first 28 days of ageing.

Influence of Variable Temperature Curing on Mechanical Properties of Fly Ash Concrete

2011 ◽  
Vol 250-253 ◽  
pp. 178-181
Author(s):  
Ya Ding Zhao ◽  
Xue Ying Li ◽  
Ling Chao Kong ◽  
Wei Du
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Elastic Modulus ◽  
Fly Ash ◽  
Flexural Strength ◽  
Variable Temperature ◽  
Improve Performance ◽  
Curing Conditions ◽  
Fly Ash Concrete ◽  
Better Than

Under variable temperature curing conditions(30 oC ~70 oC), concrete with fly ash whose compressive strength, flexural strength, and dynamic elastic modulus are better than ones without fly ash.Compared with constant temperature 20oC, 50 oC and 70 oC, variable temperature curing(VTC) is benefit for the improvement of mechanical properties of 30% fly ash concrete, but which is no advantage to improve performance of 50% fly ash concrete.

scholarly journals Flexural strength of precast reinforced concrete beam extension

2019 ◽  
Vol 1402 ◽  
pp. 022030
Author(s):  
K A Sambowo ◽  
P Prihantono ◽  
R A Sumarsono ◽  
P Kusumawardhana ◽  
I Widiasanti
Keyword(s):  
Reinforced Concrete ◽  
Flexural Strength ◽  
Concrete Beam ◽  
Reinforced Concrete Beam

Analysis of stiffness and flexural strength of a reinforced concrete beam using an invented reinforcement system

2021 ◽  
Author(s):  
Nazim Abdul Nariman ◽  
Martin Husek ◽  
Ilham Ibrahim Mohammad ◽  
Kaywan Othman Ahmed ◽  
Diyako Dilshad ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Flexural Strength ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Reinforcement System

scholarly journals Comparative Analysis of Flexural Strength and Modulus Elasticity of Sustainable Concrete Using Supplementary Cementitious Material (SCM)

2020 ◽  
Author(s):  
Shahab Samad ◽  
Attaullah Shah
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Modulus Of Elasticity ◽  
Blended Cement ◽  
Cementitious Material ◽  
Supplementary Cementitious Material ◽  
Curing Conditions ◽  
Blended Cements ◽  
Sustainable Concrete ◽  
Cement Manufacturing

The use of Supplementary Cementitious Material (SCM) is widely used in production of sustainable concrete. Blended cements, incorporating SCM such as Pulverized Fly Ash (PFA) and Ground Granulated Blast Furnace Slag (GGBFS) have been widely used to reduce the cement contents and avoid adverse environmental impacts of CO2 produced during cement manufacturing. The analysis of various structural properties of concrete such as compressive strength, flexural strength and modulus of elasticity is important for its structural application. In this research, flexural strength of 100mmx100mmx500mm beams made from blended cement were tested under three curing conditions i.e. winter, summer and under water and the flexural strength was calculated using EN-12390-5 at the ages of 28 days and 56 days. For modulus of elasticity, concrete cylinders 150mmx300mm were tested as per procedure described in BS 1881-121(1983) at the age of 28 days. The compressive strength, flexural strength and modulus of elasticity for blended cement incorporating PFA and GGBFS has been increased under summer curing environment. The experimental values of Modulus of Elasticity are compared with the provision of BS 1881.

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