Influence of silica fume on mechanical property of cemented paste backfill

Eker, Hasan; Başçetin, Ataç

doi:10.1016/j.conbuildmat.2021.126089

Cited by 44 publications

(13 citation statements)

References 64 publications

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“…In the process of filling after adjacent ore blasting, the impact generated by the blasts requires the impact resistance of CPB to be high [13][14][15]. If the impact resistance of CPB is weak, it will lose its designed protection function, and it will increase both the dilution rate of the ore and the beneficiation cost because the broken filling body will fall with the ore [16][17][18]. Therefore, improving the impact resistance of filling bodies has always been the main research direction [19].…”

Section: Introductionmentioning

confidence: 99%

The Failure Mechanical Properties of Cemented Paste Backfill with Recycled Rubber

Yang

Wang

et al. 2023

Materials

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Understanding the mechanical properties and failure process of cemented paste backfill with recycled rubber (RCPB) is the foundation of backfill design in underground mining. In this study, physical and mechanical tests were conducted on RCPB to obtain its mechanical property parameters, such as its uniaxial compressive strength (UCS), toughness, and peak strain. The influence of the rubber dosage on the mechanical properties of RCPB was also analyzed. In addition, the deformation behavior, fracture development, and failure process of RCPB with different rubber contents were observed using the digital image correlation (DIC) technique. The experimental results suggested that, although the UCS of RCPB is reduced as more rubber is added, its toughness and ability to absorb energy is increased. Moreover, the impact resistance of RCPB is improved by this increased toughness. With the increase in the rubber content, the deformation corresponding to the plastic yield stage of RCPB increased, which resulted in better ductility and improved impact resistance. The failure of the RCPB specimens mainly showed an “X” shape. The results of this study help us to better understand the mechanical behavior of RCPB after backfilling underground.

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Section: Introductionmentioning

confidence: 99%

The Failure Mechanical Properties of Cemented Paste Backfill with Recycled Rubber

Yang

Wang

et al. 2023

Materials

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“…SF is a gray-colored waste powder obtained from the reduction of high-purity quartzite with silicon or ferrosilicon alloy with coke in electric arc furnaces. As a result of production at Antalya Ferrochrome facilities in Turkey, around 500-1000 tons of waste SF material are produced annually [9]. MP is formed either during the production of block marble in quarries or during the processing of blocks by cutting them in the factory so that the marble can be used, or during the production of slab marble.…”

Section: Introductionmentioning

confidence: 99%

Physical and mechanical properties of pozzolanic materials blended cement mortars before and after the freeze-thaw cycles

FİLİZ>¹,

AKBULUT>

Güler

2023

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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Today, Portland cement (PC) production causes a significant release of carbon dioxide (CO2) gas into the atmosphere. The CO2 gases released into the atmosphere create environmental pollution worldwide and prevent current and future generations from living in a cleaner nature. One of the most effective ways of restricting PC use in concrete mixes is to use different types of industrial wastes by replacing them with PC. Using industrial wastes such as fly ash (FA), SF, and MP in concrete mixtures by replacing cement in specific proportions is vital in terms of sustainability. The primary purpose of this study is to examine comparatively the effects of fly ash (FA), silica fume (SF), and marble powder (MP) replaced with cement at the rate of 10%, 20%, and 30% on the flowability, mass loss, and residual compressive strength (RCS) of mortars before and after F-T cycles. According to the results, the effects of FA, SF, and MP on mortars' fresh and hardened properties vary considerably. However, using FA, SF, and MP instead of cement significantly improves the matrix's weak cement/aggregate interface transition zones (ITZ) by showing the filler effect. They contribute considerably to reducing mass losses and increasing the RCS capacities of mortars. Compared to room conditions, the reduction in RCS capacities of the control mortar was 21.32% after 200 F-T cycles, while the decrease in RCS capacities of FA-, SD-, and MP-added mortars was between 7.86 and 19.85%. While the mass loss of the control sample after the 200 F-T cycle is 1.23%, the mass loss of mortars with FA, SF, and MP additives is lower and varies between 0.44% and 1.02%.

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“…[ 37 ] considered that the utilization of slag cement could effectively strengthen the tailings with the addition of limestone. In a study conducted by Eker and Bascetin [ 38 ], it was seen that using silica fume instead of cement could not increase the mechanical strength of CPB, but also effectively prevent sulphate attacks in paste backfill mixture.…”

Section: Introductionmentioning

confidence: 99%

Effects of slag-based cementitious material on the mechanical behavior and heavy metal immobilization of mine tailings based cemented paste backfill

Zhang

et al. 2022

Heliyon

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Influence of silica fume on mechanical property of cemented paste backfill

Cited by 44 publications

References 64 publications

The Failure Mechanical Properties of Cemented Paste Backfill with Recycled Rubber

The Failure Mechanical Properties of Cemented Paste Backfill with Recycled Rubber

Physical and mechanical properties of pozzolanic materials blended cement mortars before and after the freeze-thaw cycles

Effects of slag-based cementitious material on the mechanical behavior and heavy metal immobilization of mine tailings based cemented paste backfill

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