Experimental study on the preparation of wood aggregate recycled concrete using waste wood and recycled fine aggregate from construction and demolition wastes

Wang, Peihan; Xu, Chenyang; Li, Qiuyi; Wang, Liang; Guo, Yuanxin

doi:10.1016/j.jobe.2024.109471

Cited by 1 publication

(1 citation statement)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Construction solid waste is difficult to use directly due to its large volume. Therefore, in order to improve its utilization efficiency, it is generally crushed and recycled into aggregate [ 6 , 7 ]. In structural engineering, there are strict requirements for mechanical performance; as the strength of subgrade materials is relatively low [ 8 , 9 , 10 ], the application of recycled construction-solid-waste aggregates for subgrade filling is one of the ways to efficiently utilize waste-based resources [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Brick Aggregate Content on Performance of Recycled Construction-Solid-Waste Aggregate

Zhu,

Ding,

et al. 2024

Materials

View full text Add to dashboard Cite

In road engineering, road construction requires a large amount of natural aggregate; its substitution with recycled construction-solid-waste aggregate not only saves resources but also reduces the burden on the environment. The main components of construction solid waste are concrete blocks and brick slag; the breakability of the latter can affect the performance of mixed recycled aggregate, which hinders the use of construction solid waste in road engineering applications. To analyze the applicability of recycled construction-solid-waste aggregate containing brick slag aggregate in the subgrade layer, the effect of brick aggregate content on the CBR (California bearing ratio) and crushing value of mixed recycled aggregates was evaluated based on laboratory tests, and the field compaction quality of the recycled aggregates was analyzed. The results show that the 9.5–19 mm mixed recycled aggregate samples were crushed to a higher degree during the compaction process. A brick aggregate content less than 40% had little effect on the performance of mixed recycled construction-solid-waste aggregate. It is recommended to use a 22 t road roller for five passes (two weak vibrations + two strong vibrations + one weak vibration) at a speed of 3 km/h in the main compaction stage of the subgrade filling.

show abstract