Correlation between the Compressive, Tensile Strength of Old Concrete under Marine Environment and Prediction of Long-Term Strength

Yao, Weilai; Jiang, Shiyong; Wei, Fei; Cai, Tao

doi:10.1155/2017/8251842

Cited by 11 publications

(4 citation statements)

References 27 publications

(30 reference statements)

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“…Therefore, it can be stated that the splitting tensile strength and compressive strength are strongly correlated with each other [25]. A good correlation has been obtained between these mechanical strengths even after exposure to the deteriorating environment [26].…”

Section: Mechanical Strengthmentioning

confidence: 90%

Mechanical and Durability Characteristics Assessment of Geopolymer Composite (GPC) at Varying Silica Fume Content

Gupta

Saxena

2021

J. Compos. Sci.

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The present study aimed at assessing mechanical and durability characteristics of ground granulated blast furnace slag (GGBS)-based geopolymer composites at 5%, 10%, 15%, 20%, 25%, and 30% replacement proportion of silica fume at 12 molarity of NaOH. Mechanical properties were assessed using compression and tension tests, whereas durability characteristics were evaluated using ultrasonic pulse velocity test (UPV), acid test, and rapid chloride permeability test (RCPT), and water absorption (WA) test. Additionally, reduction in mass and strength were also determined due to the acid action on the developed composites. A correlation of compressive strength was also established with the splitting tensile strength, UPV, RCPT, and WA. The presence of silica fume and high NaOH concentration in GPC tends to improve the mechanical strength up toa certain level. UPV values obtained were falling in the range of medium to good category. Chloride ion penetration and water absorption values were reduced by around 23% and 26%, respectively, at 10% silica fume replacement. Mass loss and strength loss were reduced as the % of silica fume increased. A good correlation of compressive strength was obtained with tensile strength, UPV, and RCPT with a coefficient of determination of 0.9681, 0.9665, and 0.9208, respectively. Poor correlation was obtained between compressive strength and water absorption.

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Section: Mechanical Strengthmentioning

confidence: 90%

Mechanical and Durability Characteristics Assessment of Geopolymer Composite (GPC) at Varying Silica Fume Content

Gupta

Saxena

2021

J. Compos. Sci.

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“…The tensile stress is also a significant mechanical feature to be properly considered in building as a concrete compressive strength. For the evaluation of structures, particularly those that exist for years, there are the real value of in situ tensile and a concrete compression strength that have long been deteriorating in realistic service settings [7]. M.S.…”

Section: S Nabila Et Allmentioning

confidence: 99%

Design & Development of a Computer Controlled Tensile Strength Testing Machine for Testing of Strings & Fabrics

Sharma¹,

Kumar²

2021

IJAERS

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Tensile testing is a primary material science test in which a sample is tension-proof until it is failure. Test results are frequently used to select an application material, to verify quality and to forecast how the material reacts with other forces. The features assessed directly by a tensile test include maximum tensile strength, maximum length and a reduction of the area. From these measures the following characteristics can also be determined: Young modulus, the ratio of Poisson, yield strength and stress resistance. Testing machine is used for the development and maintenance of better information on known materials or the development of new materials. There are many test machines, but the most common of these is the one that tests tensions, compression and bending of the materials. For the test specimen to be tested, the engine must have the proper characteristics. Three major parameters exist: strength, speed, accuracy and precision. The test machine is mainly used in the creation of the stress line diagram. The computer algorithm may be applied to compute the yield strength, tensile force, youth module or total elongation once the diagram has been generated. The author has designed & fabricated a model for demonstration of the techniques employed using viper motor (DC motor) for force exertion, load cell & instrumentation amplifier of reading force, ultrasonic distance sensor for measurement of displacement. Simultaneously a tripod mounted webcam is employed to capture real time video & image processing & employed to compute displacement on the basis of motor movement.The electromechanical and hydraulic models are offered for two types of machinery. An electric motor, a gear reduction system, and a transducers move one, two or four screws are used to produce the electromechanical Ravi Babu Sharma et al.

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“…It is acknowledged that after impact, CFRC structures can endure a significant decrease in tensile and compressive strengths. [14][15][16][17][18] Therefore, the impact performance of the CFRC structure is a vital property that should be considered for its application. There have been many studies performed on the impact performance of CFRC structures.…”

Section: Introductionmentioning

confidence: 99%

Recovery of impact-damaged carbon fiber–reinforced composites using induction heating

Bayazeid

Poon²,

Subeshan

et al. 2021

Journal of Composite Materials

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Carbon fiber–reinforced composites (CFRCs) have been used extensively in structural applications within the aerospace and automotive manufacturing industries. However, several other applications have been recognized. These take advantage of the additional properties of CFRCs, which lead to providing better performance for structures. However, in their service environment, these CFRCs are inevitably susceptible to impact damage from multiple sources, and they must be able to recover from impacts to meet structural requirements. This study directs an experimental investigation of using induction heating (IH) for an impact-damaged CFRC. Here, IH process parameters, including the effects of electromagnetic frequency and generator power on the recovery of impact-damaged CFRC, have been analyzed. The anisotropic conductivity characteristics and the relationship between the drop-weight impact depth and conductivity of CFRC garnered much attention. This paper also offers the electromagnetic properties of CFRC for various applications. In this study, CFRC cured samples were obtained from Cetex® TC1200 PEEK, AS4 145 gsm, 16 unidirectional plies. Three variants of CFRC samples were tested: undamaged samples; samples with impact damage introduced in the center by a drop-weight impact test, according to the ASTM D7136/7136M standard; and samples with drop-weight impact damage recovered using the IH system. This work presents the results of the tensile strength of CFRC samples to assess the comparison of undamaged samples, samples damaged after the drop-weight impact test, and samples recovered after the drop-weight impact test. IH is appropriate for the recovery of impact-damaged CFRC samples, aiding in the conversion of electromagnetic energy to heat in order to generate mechanisms on components to recover the impact-damaged CFRC samples. Experimental results show that the impact-damaged area of the recovered CFRC samples is 37.0% less than that of damaged CFRC samples, and tensile strength results also improved after the impact-damaged CFRC samples were recovered. These results show that the IH method can effectively improve the impact damage performance of CFRC. The outcome of this study is promising for use in many applications, especially in the aerospace and automotive industries.

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Correlation between the Compressive, Tensile Strength of Old Concrete under Marine Environment and Prediction of Long-Term Strength

Cited by 11 publications

References 27 publications

Mechanical and Durability Characteristics Assessment of Geopolymer Composite (GPC) at Varying Silica Fume Content

Mechanical and Durability Characteristics Assessment of Geopolymer Composite (GPC) at Varying Silica Fume Content

Design & Development of a Computer Controlled Tensile Strength Testing Machine for Testing of Strings & Fabrics

Recovery of impact-damaged carbon fiber–reinforced composites using induction heating

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