Abstract

One of the major problems caused by the construction and demolition of buildings is the environmental pollution due to the disposal of the large volume of generated waste materials. In addition to the protection of environment, the recycling and reusing of the waste materials are an economical measure. In this research, the viability of using the recycled brick powder as a partial or full replacement of mineral filler in asphalt concrete has been investigated. The primary natural siliceous aggregate filler, as control filler, has been replaced in different percentages, with the secondary recycled brick powder, and the mixtures have been evaluated in terms of, Marshal Stability, flow, indirect tensile strength, moisture damage and volumetric characteristics. The results show that, the Marshal Stability increases and the flow decreases with increasing the brick powder content in the mixture. The results show that full replacement of the natural filler with brick powder results in the highest resistance against permanent deformation and indirect tensile strength. It is also shown that the mixtures containing brick powder are more resistant against moisture damage than the control mixture. The replacement of the mineral filler with the brick powder does not significantly affect the volumetric properties of the mixture.

摘要

建筑物的建造和拆除造成的主要问题之一是由于处理大量产生的废料而造成的环境污染。除了保护环境外，废料的回收再利用也是一种经济的措施。在这项研究中，研究了使用再生砖粉作为部分或全部替代沥青混凝土中矿物填料的可行性。初级天然硅质骨料填料作为对照填料已以不同百分比替换为二次再生砖粉，并根据元帅稳定性、流动性、间接拉伸强度、水分破坏和体积特性对混合物进行了评估。结果表明，随着混合料中砖粉含量的增加，Marshal 稳定性增加，流动性降低。结果表明，用砖粉完全替代天然填料会产生最高的抗永久变形和间接拉伸强度。还表明，含有砖粉的混合物比对照混合物更能抵抗水分损害。用砖粉代替矿物填料不会显着影响混合物的体积性能。还表明，含有砖粉的混合物比对照混合物更能抵抗水分损害。用砖粉代替矿物填料不会显着影响混合物的体积性能。还表明，含有砖粉的混合物比对照混合物更能抵抗水分损害。用砖粉代替矿物填料不会显着影响混合物的体积性能。