Mechanical properties and durability of high - performance concrete for bridge decks

Issa, Mohsen A.; Khalil, Atef A; Islam, Shahidul; Krauss, Paul D.

doi:10.15554/pcij.07012008.108.130

Cited by 3 publications

(2 citation statements)

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“…The values of fr obtained in the present study can be compared to those obtained in previous studies, as shown in Table 3. Khalil (2002) and Issa (2008), and C is the values of fr reported by Carrasquillo et al (1981).…”

Section: Elastic Modulus For the Specimens Of ƒ'C80-nshd5-sf5 And ƒ'Cmentioning

confidence: 90%

Strength Development of High-Performance Concrete using Nanosilica

Eddhie¹

2017

IJTech

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The mechanical properties and durability of high-performance concrete can be improved with the use of nanosilica. Still, the relationship between the content of nanosilica and the mechanical properties of concrete needs to be verified in order to develop of compressive strength that can be applied to any concrete mixture. The aim of this study was to develop mathematical equations that account for the relationship among concrete's compressive strength, the modulus of elasticity with its compressive strength, and the modulus of rupture with its compressive strength. The specimens of ƒ'c80-NS10-SF5 and ƒ'c100-NS10-SF5 were fabricated by mixing natural nanosilica and silica fume, and those of ƒ'c80-NSHD5-SF5 and ƒ'c100-NSHD5-SF5 were fabricated by mixing commercial nanosilica and silica fume as the main composition materials, with the addition of other materials. The compressive strength and indirect tensile strength of the concrete were tested at 1, 3, 7, and 28 days. New mathematical models of generalized compressive strength against concrete age were empirically developed and then validated in order to derive new insights into the substitution of natural nanosilica for commercial nanosilica in the civil-engineering industry.

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Section: Elastic Modulus For the Specimens Of ƒ'C80-nshd5-sf5 And ƒ'Cmentioning

confidence: 90%

Strength Development of High-Performance Concrete using Nanosilica

Eddhie¹

2017

IJTech

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“…These were due to the onset of more homogeneous microstructures, more solid and gel size C-S-H. The average value of Coulomb Test RCPT to concrete mix ingredients and supplements such as Silica fume, fly ash, and slag were low to very low [8]. The durability and mechanical properties of HPC depends on improvement of cement paste [9].…”

Section: Introductionmentioning

confidence: 99%

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Pattinaja¹,

Jonbi²,

Tjahjani³

2015

Proceedings of the 2nd International Conference on Green Materials and Environmental Engineering

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Abstract-The latest trend of concrete technology declared that concrete is not only needs strength but also durability. It is concurrently with the environmental issues that material durability is something that needs to be prioritized in its use. Various attempts have been made to produce concrete that has high durability. Many studies and experiments have been done partly by using admixtures of fly ash, and silica fume (FS). The latest development was the application of nano silica (NS) to improve the performance of concrete especially its durability. In this study, further experiments were done by using admixtures of nano silica with and without silica fume. The additives were applied to the concrete mix design of high performance concrete (HPC) with ƒ'c 100 MPa as a reference, then mixed with NS in a percentage of 3%, 5%, 10%, 15% with and without silica fume. Further compressive strength, and durability testing were done with a standard DIN 1045, and RCPT standard ASTM C 1202. The experimental results shown that the optimum admixtures proportion were the application of NS 5% and SF 5%, which given the best of concrete compressive strength and durability. Furthermore, the combination of the used of nano silica with silica fume is more effective than nano silica without silica fume.

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