Influences of Clay Brick Particles on the Performance of Cement Stabilized Recycled Aggregate as Pavement Base

Abstract

This paper presents an investigation on the influences of clay brick particles on the performance of cement stabilized recycled aggregate as pavement base. The comparative tests of unconfined compressive strength, compressive modulus of resilience, frost resistance, scouring resistance, drying shrinkage and temperature shrinkage of 6 kinds of mixtures with different coarse and fine clay brick particle contents were carried out. Test results showed that the unconfined compressive strength of cement stabilized recycled aggregate was compromised by the clay brick particles, especially the lateral strength. The coarse clay brick particles had little influence on the compressive resilience modulus of the mixture, while the fine clay brick particles could significantly increase it. The frost resistance of the mixture increased first and then slightly decreased with the increase of the content of coarse clay brick particle, while it increased with the increase of fine particle content. The scoured mass loss increased with the increase of coarse clay brick particle content. However, it is discovered that the fine clay brick particles had almost no influences on the scoured mass loss. The addition of both coarse and fine clay brick particles could decrease the drying shrinkage of the mixture at early construction stage. The temperature shrinkage performance of the mixture was not so sensitive to the addition of clay brick particles. Generally, the cement stabilized recycled aggregate with clay brick particles could meet the requirements of the pavement base in many cases but it needs to be optimized in application with consideration of the load and climate conditions.

Mechanical Properties, Durability and Leaching Toxicity of Cement-Stabilized Macadam Incorporating Reclaimed Clay Bricks as Fine Aggregate

“…Scouring mass loss rate (SML) results representing the anti-scouring property of CSM with RCB at a curing time of 28 d are displayed in Figure 11. It is obvious from the figure that SML values of CSM present an upward tendency with the RCB substitution ratio, as concluded by Miao et al, [49]. The degradation of the anti-scouring property can be mainly attributed to the poor angularity of RCB.…”

“…Sustainability 2022, 14, 8432 14 of 18 by Miao et al, [49]. The degradation of the anti-scouring property can be mainly attributed to the poor angularity of RCB.…”

Effect of recycled crushed bricks as additive in pavement material

“…However, concrete debris is also rising every year and it has been identified as the most created waste from the construction sector [1]. While Malaysia has completed several building projects in the tourist and manufacturing industries and the construction sector continues to be one of the components includes of Malaysia's economy [2], the dumping of construction and demolition debris in landfills has resulted in environmental hazards [3]. According to government sources, Malaysia has a severe shortage of landfill capacity and continuing to dispose of construction and demolition waste at landfills that would jeopardise landfills' strategic use for the disposal of more demanding waste categories.…”

Investigation of Resilience Characteristics of Unbound Granular Materials for Sustainable Pavements

“…Other researchers used additional materials as aggregates to improve the resilient behavior of the base layer of pavement. It is shown that the addition of coarse clay brick particles has minor impacts on the compressive resilient modulus of the mixture, and it can be significantly increased through the addition of fine particles [29]. Jaffar et al added lime, sand, and marble waste to enhance the mechanical properties of subgrade soil.…”