Interpretation of Concrete Strength for Nonstandard Specimens

Mansur, M. A.; Islam, Md. Mofizul

doi:10.1061/(asce)0899-1561(2002)14:2(151)

Cited by 74 publications

(49 citation statements)

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“…For the whole range of concrete grades currently in use, however, systematic studies on this topic are scarce. Recently, Mansur and Islam (2002) evaluated the interpretation of concrete strength for nonstandard specimens. However, their studies were limited to interpret strengths between cylinders and cubes.…”

Section: Introductionmentioning

confidence: 99%

Effect of specimen sizes, specimen shapes, and placement directions on compressive strength of concrete

Yang

Choi

2006

Nuclear Engineering and Design

241

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Section: Introductionmentioning

confidence: 99%

Effect of specimen sizes, specimen shapes, and placement directions on compressive strength of concrete

Yang

Choi

2006

Nuclear Engineering and Design

241

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“…As compressive strength is reported to have a significant influence on the shape factors of vibrated concrete (Abaza, 2003;Day and Haque, 1993;Felekoglu and Türkel, 2005;Mansur et al, 2002) and SCC (Domone, 2007), the shape factors for SCC obtained in this work are plotted in Figures 10 and 11. The conversion factors based on strength classes in ISO 3893 (ISO, 1977) and EN 206-1 (CEN, 2000) are also plotted in Figure 11.…”

Section: Influence Of Compressive Strengthmentioning

confidence: 96%

“…Although constant shape factors are most often used, two material properties are reported to affect the shape factors of vibrated concrete -the compressive strength and the maximum size of the coarse aggregate; the higher the compressive strength of vibrated concrete, the smaller the influence of the type of specimen on the measured compressive strength (Abaza, 2003;Day and Haque, 1993;Felekoglu and Türkel, 2005;Mansur et al, 2002;Vandegrift and Schindler, 2006). As a result, the shape factors approach 1 .…”

Section: Introductionmentioning

confidence: 96%

Influence of the composition of powder-type SCC on conversion factors for compressive strength

Vurst

Boel

Craeye

et al. 2014

Magazine of Concrete Research

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Depending on practical considerations and standards, different types of test specimens are used for the determination of the uniaxial compressive strength of concrete. Appropriate conversion factors, also referred to as shape factors, are needed to convert the compressive strength as determined on one type of specimen to the equivalent compressive strength of another type of specimen. As such shape factors for vibrated concrete are influenced by the composition of the concrete, questions arise concerning the factors that affect the shape factors for powder-type self-compacting concrete (SCC). This paper describes the findings of an extensive research programme performed by three laboratories on the influencing parameters of the shape factors for SCC. Concrete composition parameters such as powder content, cement/powder ratio, water/cement ratio and the type of coarse aggregates, cement, filler and plasticiser appear to have little effect on the experimentally obtained shape factors. Any possible influence on compressive strength was overshadowed by experimental scatter

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“…If the compressive strength of concrete was average from cube specimens, it will be converted to the compressive strength of standard cylinders with a factor of 1.2 (Mansur and Islam, 2002). A total of 120 specimens were reported in the above studies, but some of the studies did not provide values of the impact force (Adhikary et al, 2015).…”

Section: Databasementioning

confidence: 99%

Prediction of the impact force on reinforced concrete beams from a drop weight

Pham

Hao

2016

Advances in Structural Engineering

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It is always a challenge to efficiently and accurately estimate the force on structures from falling objects. This study aims to predict the maximum impact force on reinforced concrete beams subjected to drop-weight impact using artificial neural network. A new empirical model including a comprehensive version and a simplified version is proposed to estimate the maximum impact force. The model was verified against a database collected from the literature including 67 reinforced concrete beams tested under drop-weight impacts. The database covers the concrete strengths ranging from 23 to 47 MPa, the projectile mass from 150 to 500 kg, and the impact velocity up to 9.3 m/s. The prediction of the comprehensive version of the proposed model fits the experimental results very well with an average absolute error of 11.6%. The simplified version of the proposed model is established for easy estimation, with the average error of 23.2% in prediction of the maximum impact force.

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Interpretation of Concrete Strength for Nonstandard Specimens

Cited by 74 publications

References 0 publications

Effect of specimen sizes, specimen shapes, and placement directions on compressive strength of concrete

Effect of specimen sizes, specimen shapes, and placement directions on compressive strength of concrete

Influence of the composition of powder-type SCC on conversion factors for compressive strength

Prediction of the impact force on reinforced concrete beams from a drop weight

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