Utilization of High Volume Fraction of Binary Combinations of Supplementary Cementitious Materials in the Production of Reactive Powder Concrete

Nasr, Mohammed Salah; Hasan, ZA; Abed, MK; Dhahir, MK; Najim, WN; Shubbar, Ali Abdulhussein; Habeeb, ZD

doi:10.3311/ppci.16242

Cited by 18 publications

(15 citation statements)

References 34 publications

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“…The optimum proposed pozzolanic material (CG20) was utilized as partial volumetric replacement from silica fume content at fractions of (5 %, 10 %, 15 %, 20 %, and 25 %). The proportion mix of control mix was stand on earlier local studies mixes [30][31][32][33][34][35]. The quantities of ingredients for mixes in this study are itemized in Table 1.…”

Section: Proportionmentioning

confidence: 99%

Mechanical Behavior of Modified Reactive Powder Concrete with Waste Materials Powder Replacement

Radhi

Rasoul

Alsaad

2021

Period. Polytech. Civil Eng.

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Across the world, a huge amount of waste materials is deposited from different industrial or construction activities. Out of this massive waste quantity, a petite is recycled and remaining is dumped in vulnerable lands. This paper deals with the potential utilization of solid waste in reactive powder concrete, practically powdered glass originating from waste glass bottles and powdered ceramics tile from waste of construction process. First, the optimum ratio of waste pozzolanic material (ceramics to glass ratio) was obtained by pozzolinic activity test. Then, the optimal waste pozzolanic material was incorporated in reactive powder concrete at several substitution levels. The waste pozzolanic material in 5 %, 10 %, 15 %, 20 %, and 25 % were added in the reactive powder concrete mixes as fractional supplement of silica fume. Strength and water absorption of the modified reactive powder concrete were evaluated. A significant enhancement was observed in mechanical behavior of modified reactive powder concrete containing 15 % waste pozzolanic material. Results directed irrelevant raise in water absorption as increasing the waste replacement material.

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Section: Proportionmentioning

confidence: 99%

Mechanical Behavior of Modified Reactive Powder Concrete with Waste Materials Powder Replacement

Radhi

Rasoul

Alsaad

2021

Period. Polytech. Civil Eng.

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“…As a result, extensive research projects have been conducted recently to adverse the durability and sustainability of concrete by using different industrial waste and by-products to replace, partially or totally, Portland cement and natural aggregates in ordinary concrete. These include silica fume [3], fly ash [4], metakaolin [5], recycled aggregates [6], etc. However, less attention is given to lowering water consumption in concrete production.…”

Section: Introductionmentioning

confidence: 99%

Influence of Saline-treated Wastewater on Properties of Concrete: An Experimental Study

Dehane

Kriker

Salhi

2023

Period. Polytech. Civil Eng.

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The rapidly growing world population and the accompanying increase in concrete production to meet building and infrastructure needs have led to significant increase in potable water consumption, which resulted in several environmental problems. This paper investigates the feasibility of replacing potable water with highly mineralized treated wastewater in concrete mixing in order to make concrete production more eco-friendly in an arid region. Concrete specimens were prepared using saline treated wastewater (saline-TWW) as mixing water and compared to those mixed with distilled water (DW) and with the performance requirements given by the mixing water quality standards. The results revealed that the concrete mixes produced using saline-TWW exhibited higher early strength and a similar long-term strength than the control mix produced using DW. It was also found that the use of saline-TWW increased the setting times of cement paste but had no remarkable effect on the workability of fresh concrete mixture. Furthermore, the microstructural characteristics of the hardened concrete were assessed by water-permeability test, SEM image analysis, and X-ray diffraction tests. The results revealed that saline-TWW concrete exhibited a more compact microstructure and smaller pore sizes than their counterparts of DW, which means an improvement in the durability of saline-TWW concrete. Moreover, an electrochemical test was conducted to estimate the extent of corrosion of the steel embedded in reinforced mortar specimens prepared using saline-TWW and DW. The electrochemical test results showed that the use of 100% saline-TWW as mixing water of concrete resulted in a high corrosion rate of the embedded steel.

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“…Earlier studies have inspected the water absorption of normal concretes in several situations [10][11][12][13][14][15][16][17][18]. The mix proportion of concretes has a clear impact on the capillary water absorption.…”

Section: Introductionmentioning

confidence: 99%

Studying the Impact of Imposed Actual Loads on the Non-Destructive Test Results for Evaluating the Compressive Strength and Other Properties of Concrete

Al-Baghdadi

Mahan

Shubbar

et al. 2022

IRECE

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Among all the concrete characteristics, the compressive strength is known as the most important feature and therefore, it is often utilized to quantify the quality of concretes. The assessment of concretes strength in existing constructions is important during their service life. Thus, in addition to destructive evaluation of strength, many non-destructive techniques have been adopted to assess the concretes strength. Ultrasonic Pulse Velocity (UPV) is one of the nondestructive techniques that involve measuring the speed of ultrasonic wave through concretes to predict concretes strength. According to the Griffith's theory, the strength of the material is greatly affected by the defects' existence (for example, small cracks). These cracks can be current prior to the application of any loading or could create throughout the load application. The presence of micro-cracks in concretes that generate due to the applied load may affect the UPV test results in comparison with unloaded concretes. An experimental investigation is conducted in order to assess the impact of the applied of load (ultimate load) on the measured ultrasonic wave velocity and compared with the results of compressive strength from destructive test. A total of thirty (150 mmx150mm) cube specimens have been utilized with water to cement ratios (0.45). These cubes have been examined in ultrasound without any loads and then they have been tested in the same way with applied ultimate load which is approximately equal to half of the required design load (failure load) and then inspected or tested in the normal way (destructive test). In order to assess the compressive strength of concretes using (UPV), loading condition is considered in order to study the impact of the applying load. In addition, the water absorption has been examined for thirty concretes samples under the impact of the applied loads (20%, 40% and 60%). The results of nondestructive tests of concretes samples under the influence of imposed loads (60%) have showed to be less by compressive strength 5 MPa than the results obtained from testing of unloaded concretes samples through the resulting equation and comparing them to the equation from previous research. This is consistent with the water absorption test of the specimens under the imposed loads (60%) where Absorption values have been greater than concretes models without applied loads. Copyright

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Utilization of High Volume Fraction of Binary Combinations of Supplementary Cementitious Materials in the Production of Reactive Powder Concrete

Cited by 18 publications

References 34 publications

Mechanical Behavior of Modified Reactive Powder Concrete with Waste Materials Powder Replacement

Mechanical Behavior of Modified Reactive Powder Concrete with Waste Materials Powder Replacement

Influence of Saline-treated Wastewater on Properties of Concrete: An Experimental Study

Studying the Impact of Imposed Actual Loads on the Non-Destructive Test Results for Evaluating the Compressive Strength and Other Properties of Concrete

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