Feasibility of preparing self-compacting mortar via municipal solid waste incineration bottom ash: an experimental study

Wang, Qun; Chu, Hongyan; Shi, Wenfang; Jiang, Jinyang; Wang, Fengjuan

doi:10.1007/s43452-023-00794-5

Cited by 18 publications

(4 citation statements)

References 32 publications

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“…It further reduces the demand for sand and gravel extraction [12]. This practice is consistent with the ideas of sustainable development and helps promote resource recycling and environmental protection [13][14][15].…”

Section: Introductionsupporting

confidence: 53%

“…Thomas et al [18] revealed that upon inducing freeze-thaw cycles, the frost and abrasion resistance of mortars made with MSWI slag were comparable to or even higher than those made with natural aggregates. To summarize, MSWI-BA-reinforced concrete meets engineering requirements for durability, mechanical properties, and workability, offering advantages, such as reduced production costs, carbon footprint, and energy consumption compared to ordinary concrete [13].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Incorporating Steel Fibers and Municipal Waste on the Compressive Strength of Concrete

Wan,

Tan,

Long

2024

SDHM

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In this study, we assessed the impact of substituting natural fine aggregates with municipal solid waste incineration bottom ash (MSWI-BA) in steel fiber (SF)-reinforced concrete on its compressive properties post high-temperature exposure. The concrete specimens incorporating MSWI-BA as the fine aggregate and SFs for reinforcement underwent uniaxial compression tests after exposure to high temperatures. Through the tests, we investigated the impact of high-temperature exposure on mechanical properties, such as mass loss rate, stress-strain full curve, compressive strength, peak strain, elastic modulus, and so on, over different thermostatic durations. The analysis revealed that with the increasing exposure temperature and durations, the mass loss rate gradually increased; compressive strength initially increased and then decreased; peak strain significantly increased; stress-strain curve flattened, and elasticity modulus monotonically decreased. Different thermostatic durations led to distinct critical temperatures for the compressive strength (700°C for 1.0 and 1.5 h, and 500°C for 2 h). The concrete specimens exhibited an increasing compressive strength below the critical temperature, followed by a rapid decrease upon exceeding it. Based on the strain equivalence hypothesis and Weibull distribution theory, we derived expressions for the total damage variables and a uniaxial compression constitutive model, which accurately reflected the changing macro mechanical properties of concrete under various exposure temperatures and thermostatic durations. The concrete matrix microscopic morphology continuously deteriorated beyond 500°C, resulting in a loss of compressive strength. This degradation in the concrete microstructure serves as the fundamental cause for the decline in its macroscopic mechanical properties.

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Section: Introductionsupporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Effects of Incorporating Steel Fibers and Municipal Waste on the Compressive Strength of Concrete

Wan,

Tan,

Long

2024

SDHM

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“…Commercially available ready mix UHPC such as Ductal®, BSI®, and CEMENTE are 10–20 times more expensive than regular concrete, which deters its widespread use [ 8 ]. Since its launching in the commercial market in 1995, UHPC has been under detailed exploration around the world [ 7 , [9] , [10] , [11] , [12] , [13] , [14] , [15] , [16] , [17] , [18] ]. Several researchers around the globe have developed UHPC utilizing conventional raw materials and production techniques as summarized in Table 1 .…”

Section: Introductionmentioning

confidence: 99%

Development and characterization of non-proprietary ultra high performance concrete

Saleem,

Liaquat,

Saleem

et al. 2024

Heliyon

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“…However, there is a paucity of research exploring the transformation of abandoned mud into novel materials. Currently, the utilization of mud discarded from bored piles primarily involves its conversion into cement-based construction materials [ 16 , 17 , 18 , 19 , 20 , 21 ], volcanic ash-based materials [ 22 , 23 , 24 ], fine aggregates [ 25 , 26 , 27 ], and brick materials [ 28 , 29 ]. Luis et al [ 22 ] investigated the potential of water treatment sludge (WTS) for the development of supplementary cementitious materials (SCM).…”

Section: Introductionmentioning

confidence: 99%

The Effects of Hydroxypropyl Methyl Cellulose and Metakaolin on the Properties of Self-Compacting Solidified Soil Based on Abandoned Slurry

Tang,

Huang,

Shen

et al. 2024

Materials

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As a new type of backfill material, Self-compacting solidified soil (SCSS) takes the abandoned slurry of cast-in-place piles after dewatering and reduction as the main raw material, which brings a problem of coordinating the working performance with the mechanical property under the condition of high mobility. In this paper, hydroxypropyl methyl cellulose (HPMC) and metakaolin were introduced as additives to solve this problem. First, the workability and mechanical properties of SCSS were regulated and optimized by means of the water seepage rate test, the flowability test, and the unconfined compressive strength test. Second, this study also used X-ray diffraction (XRD) and scanning electron microscopy (SEM) to investigate the effects of HPMC and metakaolin on the physical phase and microstructure of SCSS. In this way, the results showed that there was a significant impact on the flowability of SCSS, that is, when the dosage reached 0.3%, the water seepage rate of SCSS was reduced to less than 1%, and the compressive strength at 7 days reached its peak. At the same time, HPMC weakened the strength growth of SCSS in the age period of 7 days to 14 days. However, the addition of metakaolin promoted its compressive strength. XRD analysis showed that the additives had no significant effects on the physical phases. And, from the SEM results, it can be seen that although the water-retaining effect of HPMC makes hydration of cement more exhaustive, more ettringite (AFt) can be observed in the microstructure. In addition, it can be observed that the addition of metakaolin can generate more hydrated calcium silicate (C-S-H) due to the strong surface energy possessed by metakaolin. As a result of the above factors, SCSS filled the voids between particles and improved the interface structure between particles, thus enhanced the compressive strength.

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Feasibility of preparing self-compacting mortar via municipal solid waste incineration bottom ash: an experimental study

Cited by 18 publications

References 32 publications

Effects of Incorporating Steel Fibers and Municipal Waste on the Compressive Strength of Concrete

Effects of Incorporating Steel Fibers and Municipal Waste on the Compressive Strength of Concrete

Development and characterization of non-proprietary ultra high performance concrete

The Effects of Hydroxypropyl Methyl Cellulose and Metakaolin on the Properties of Self-Compacting Solidified Soil Based on Abandoned Slurry

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