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Cement composites with limestone dust and different grades of wood sawdust

机译：具有石灰石粉尘和不同等级木屑的水泥复合材料

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摘要

This paper presents a parametric experimental study which investigates the potential use of limestone powder wastes (LPW) and wood sawdust wastes (WSW) combination for producing a lightweight composite as a building material. Some of the physical and mechanical properties of brick materials having various levels of LPW and WSW with different particle sizes are investigated. The obtained compressive strength, flexural strength, unit weight, ultrasonic pulse velocity (UPV) and water absorption values satisfy the relevant international standards. The results show the effect of high level replacement of WSW with LPW does not exhibit a sudden brittle fracture even beyond the failure loads, indicates high energy absorption capacity, reduce the unit weight dramatically and introduce a smoother surface compared to the current bricks in the market. It shows a potential to be used for walls, wooden board substitute, alternative to the concrete blocks, ceiling panels, sound barrier panels, absorption materials, etc. Recycling of unmanaged WSW and LPW as new brick material supplements appears to be viable solution not only to the environmental problem but also to the problem of the economic design of buildings.
机译：本文提供了一项参数化实验研究，研究了石灰石粉废物（LPW）和木屑废物（WSW）组合在生产轻质复合材料作为建筑材料方面的潜在用途。研究了不同粒径的LPW和WSW含量不同的砖材料的一些物理和机械性能。所获得的抗压强度，抗弯强度，单位重量，超声脉冲速度（UPV）和吸水率均满足相关国际标准。结果表明，与市场上现有的砖相比，用LPW大量替换WSW的效果甚至在超过破坏载荷时也不会出现突然的脆性断裂，表明具有高能量吸收能力，显着降低了单位重量并引入了更光滑的表面。它显示出可用于墙壁，木板替代品，替代混凝土块，天花板，隔音板，吸收材料等的潜力。作为新砖材料的补充，回收无管理的WSW和LPW似乎不仅是可行的解决方案既要解决环境问题，又要解决建筑物的经济设计问题。

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