Coupled effect of coarse aggregate and micro-silica on the relation between strength and elasticity of high performance concrete

Hussain, Raja Rizwan; Shuraim, Ahmed B.; Aslam, Fahid; Alhozaimy, Abdulrahman M.; Al-Humaiqani, Mohammed M.

doi:10.1016/j.conbuildmat.2018.04.192

Cited by 4 publications

(6 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…High performance concrete (HPC) is commonly used worldwide for applications required high strength and durability such as parking decks, bridge deck overlays, highway bridges, and marine structures 1,2,3 . ACI identifies the HPC as a concrete which can provide certain performance requirements such as high durability, good strength, low permeability as well as uniformity that cannot be reached with the conventional ingredients alongside conventional mixing, placing and curing conditions 4–6 . The design and construction of the HPC structural members is mostly the function of material properties of the HPC.…”

Section: Introductionmentioning

confidence: 99%

“…The design and construction of the HPC structural members is mostly the function of material properties of the HPC. Requirements of this special concrete can include improvements of precise for material and mechanical properties of concrete 5,6 . Therefore, HPC is obtained through decreasing the water/binder ratio and porosity of the microstructure of the cement paste with supplementary cementitious materials 1,2,4,7 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The effects of synthetic wollastonite developed with calcite and quartz on high performance mortars

Öz

Güneş

2020

Structural Concrete

View full text Add to dashboard Cite

In this study, the effects on high performance mortar (HPM) of synthetic wollastonite (SW) mineral were researched. Through this work, firstly, wollastonite was synthetically obtained by a particular production method. Secondly, SW was utilized as cement replacement material from 0 to 12% by 3% steps of increment in the production of HPM. After determination of slump flow diameters of HPMs, mechanical and durability properties were observed at 28 and 90 days. Additionally, microstructural performance properties of HPMs designed with SW in the ratios 0, 9, and 12% was specified with TGA/DTA and FTIR analysis as well as SEM/EDX and XRD analysis. The test and analysis results showed that SW decreased the workability of HPMs. The improvement of the mechanical and durability properties of HPMs proceeded up to 9% of SW. Microstructural analysis showed that development effect of SW on the HPM can be attributed to its needle‐shaped structure.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effects of synthetic wollastonite developed with calcite and quartz on high performance mortars

Öz

Güneş

2020

Structural Concrete

View full text Add to dashboard Cite

show abstract

“…The obtained the secant modulus of elasticity values are comparable with the results of Shariq et al (2013), where for normal weight concrete with w/c = 0.50 and the addition of the corresponding amount of blast furnace slag, E c was about 15-18 GPa after 3 days of curing for samples in the surface dry condition. After 28 days of curing, depending on the aggregate type, the elastic modulus of Portland cement concrete ranges from 30 to 40 GPa (Hussain et al 2018;Gonzalez-Ortega et al 2014). An addition of up to 40% of slag may decrease E c even by over 20% (Siddique and Kaur 2012).…”

Section: Discussionmentioning

confidence: 99%

“…The elastic modulus of concrete with iron-bearing aggregates, such as hematite and magnetite, is within the range of 27-60 GPa (Hussain et al 2018;Lotfi-Omran et al 2019), and with baryte aggregate 25-40 GPa (Hussain et al 2018;Özbay et al 2016;Gökçe et al 2018). A wide range of E c results from variability of rock properties and aggregate contents in concrete (Gökçe et al 2018;Saidani et al 2015).…”

Section: Discussionmentioning

confidence: 99%

Early Age Hardening of Concrete with Heavy Aggregate in Gamma Radiation Source – Impact on the Modulus of Elasticity and Microstructural Features

Dąbrowski

Glinicki

Dziedzic

et al. 2021

ACT

View full text Add to dashboard Cite

The effects of gamma irradiation on concrete properties during early hardening were studied towards radioactive waste storage or accelerated processing at precast plants. Concrete mixtures containing different mineral aggregates (baryte, magnetite, amphibolite) were investigated. During initial 16 hours of hardening the mixes were irradiated using 60 Co gamma source at the rate of 3.5 kGy/h. The mechanical properties and microstructural features of irradiated early-age concrete were tested: the secant elastic modulus, the compressive strength, the porosity and pore size distribution. XRD and SEM analysis were also performed. The results indicate both the stiffening and pore refinement in concrete due to early gamma irradiation. Effects of early irradiation on microstructural features of cement matrix were found in the subsurface layer up to the depth of 2 mm. The influence of different mineral aggregates in concrete on the radiationinduced changes of early age properties is discussed.

show abstract

“…Aggregates and cementitious binders used in concrete affect the strength and elasticity of concrete [16][17][18][19][20][21]. Elasticity modulus is a key property in improving the mechanical properties of concrete [22][23][24]. However, other studies found a key correlation between the strength of concrete and its elastic modulus more than its aggregate type [17,25] and its radiation absorption characteristics.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and radiation attenuation properties of conventional and heavy concrete with diverse aggregate and water/cement ratios

2022

JCE

View full text Add to dashboard Cite

This paper presents the results of comprehensive laboratory work conducted for investigating the mechanical and radiation attenuation characteristics of heavyweight concrete produced with pyrite, chromium, and magnetite aggregates and normal weight concretes produced with three different water/ cement (w/c) ratios. Various experiments were conducted to determine the compressive strengths, ultrasound transmission velocities, experimental elasticity modules, and mass attenuation coefficients of these concretes. Heavy and normal weight concretes exhibited similar behaviour in terms of compressive strength and elasticity modules. In heavyweight concretes, with increased w/c ratios (by keeping the amount of water constant and decreasing the amount of cement), the corresponding density increased due to the increase in the amount of high-density aggregates rather than cement in the composition of concrete. Thus, heavyweight concretes produced with a high w/c ratio and low strength can absorb more X-rays. Mass attenuation coefficients converge in heavy and normal weight concretes with different densities at high energy levels.

show abstract

Coupled effect of coarse aggregate and micro-silica on the relation between strength and elasticity of high performance concrete

Cited by 4 publications

References 8 publications

The effects of synthetic wollastonite developed with calcite and quartz on high performance mortars

The effects of synthetic wollastonite developed with calcite and quartz on high performance mortars

Early Age Hardening of Concrete with Heavy Aggregate in Gamma Radiation Source – Impact on the Modulus of Elasticity and Microstructural Features

Mechanical and radiation attenuation properties of conventional and heavy concrete with diverse aggregate and water/cement ratios

Contact Info

Product

Resources

About