Properties and modification of sustainable foam concrete including eco-friendly recycled powder from concrete waste

Yang, Dingyi; Liu, Miao; Zhang, Zhibin; Yao, Pengpeng; Ma, Zhiming

doi:10.1016/j.cscm.2021.e00826

Cited by 18 publications

(11 citation statements)

References 45 publications

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“…Thus, the hammer rebound indexes of the mixes with limestone powder were the highest, exceeding an index of 40 units in mix L0, closely followed by the mixes with limestone filler. The high mortar content in the RCA powder [27] and its potential to increase porosity [54], led to low hammer rebound indexes, with a value of only 18 units in mix R100.…”

Section: Hammer Rebound Indexmentioning

confidence: 99%

Hammer rebound index as an overall-mechanical-quality indicator of self-compacting concrete containing recycled concrete aggregate

Revilla‐Cuesta

Ortega-López

Faleschini

et al. 2022

Construction and Building Materials

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Section: Hammer Rebound Indexmentioning

confidence: 99%

Hammer rebound index as an overall-mechanical-quality indicator of self-compacting concrete containing recycled concrete aggregate

Revilla‐Cuesta

Ortega-López

Faleschini

et al. 2022

Construction and Building Materials

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“…The compressive strength shows a slight decrease; however, it is demonstrated that at 28 days it achieves the strength for which it was designed. It is worth mentioning that the compressive strength is inversely proportional to the percentage of recycled aggregate replacement, according to [14], the compressive strength tends to increase as the curing time increases. The compressive strength of FC decreases slightly with the addition of RCP up to 15%.…”

Section: Discussionmentioning

confidence: 99%

Influence of recycled aggregate on the compressive strength and absorption percentage of Lima 2020 pedestrian pavers

Aguilar-Cipriano¹,

Neyra-Torres²,

Campos-Vasquez³

2022

Proceedings of the 20th LACCEI International Multi-Conference for Engineering, Education and Technology: “Education, Research A

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A systematic review is carried out to determine the influence of recycled aggregate on the properties of concrete designed for pedestrian pavers, selecting highly relevant investigations, filtering them by years, focus and results. Which contribute to make a comparison of results in the properties of resistance to compression and percentage of absorption of pavers subjected to different percentages of replacement of recycled aggregate in its structure, in order to determine the influence, they have on said properties. Through the analysis and synthesis of results, the influence of the recycled aggregate is validated, affecting the decrease in its resistance to compression and the increase in the percentage of absorption. However, taking into account the information presented and based on the statistics, it is valid to conclude that by replacing up to 25% of the coarse aggregate with recycled aggregate, an adequate mixture can be achieved, complying with the parameters estimated by NTP. 399,611 according to their properties. Likewise, it is valid to mention that, at a higher percentage of replacement, the properties vary unfavorably

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“…In order to reveal the influence of added aggregate on the performance of foamed concrete, scholars have carried out a lot of work. Yang et al (2022) prepared foamed concrete by replacing a certain proportion of cement with recycled concrete powder. It is found that the addition of recycled concrete micro powder has little effect on the dry density of the specimen, but it reduces the compressive strength.…”

Section: Introductionmentioning

confidence: 99%

Physical and mechanical properties of foamed concrete with recycled concrete aggregates

Han

Zhang²,

Zhang³

et al. 2023

Front. Mater.

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A large amount of waste concrete is produced during old city reconstruction. In order to realize the lightweight reuse of recycled concrete aggregate, a new preparation scheme of foamed concrete is proposed. Through single-factor tests, the effects of recycled coarse aggregate (RCA) gradation, RCA volume ratio, water-cement ratio and foam content on the preparation process and performance of RCA foamed concrete (RCAFC) were explored. The results showed that RCA grade has significant influence on the performance of RCAFC. Grading level Ⅲ (i.e., the mass ratio of five-type aggregates sized, respectively, 9.5–16 mm, 16–19 mm, 19–26.5 mm, 26.5–31.5 mm and 31.5–37.5 mm is 2:4:8:3:3) can reduce the water absorption by 4.6%, increase the compressive strength by 6.0%, and decrease the difficulty of sample preparation compared with the natural grading. The increase of RCA volume fraction is directly proportional to the compressive strength and inversely proportional to the water absorption. With the raising of water-cement ratio, the fluidity of foamed concrete paste increases linearly, the dry density decreases, the water absorption decreases first and then increases, and the compressive strength increases first and then decreases. The increase of foam content is inversely proportional to fluidity, dry density and compressive strength, and it is directly proportional to water absorption. Among the above four factors, the grade of RCA has the greatest impact on the early strength of the sample, whilst the content of foam is the smallest.

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Properties and modification of sustainable foam concrete including eco-friendly recycled powder from concrete waste

Cited by 18 publications

References 45 publications

Hammer rebound index as an overall-mechanical-quality indicator of self-compacting concrete containing recycled concrete aggregate

Hammer rebound index as an overall-mechanical-quality indicator of self-compacting concrete containing recycled concrete aggregate

Influence of recycled aggregate on the compressive strength and absorption percentage of Lima 2020 pedestrian pavers

Physical and mechanical properties of foamed concrete with recycled concrete aggregates

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