汉麻混凝土制备及性能研究

Preparation and Properties of Hemp Concrete

汉麻混凝土是由汉麻秆芯和石灰等形成的生物复合材料。利用正交实验分析了汉麻含量、石灰含量和施压时间三因素对汉麻混凝土力学性能和保温性能的影响。结果表明:影响汉麻混凝土保温性能的因素依次为汉麻含量、石灰含量、施压时间,当汉麻含量为45%,石灰含量为45%,施压时间为10min时,混凝土的保温性能最优;影响汉麻混凝土力学性能的因素依次为汉麻含量、石灰含量、施压时间,当汉麻含量为15%、石灰含量为15%、施压时间为30min时,混凝土的抗压性能最优;通过加入适量汉麻秆芯,在满足抗压条件的前提下提高了混凝土的保温性能,不仅实现了生物质废弃物的回收利用,又能节能和保护环境。

Hemp concrete is a biocomposite material mainly composed of hemp stalk core and lime.The effects of hemp content,lime content and pressure time on mechanical properties and thermal insulation properties of hemp concrete were analyzed by orthogonal test.The results show that the factors affecting the thermal insulation performance of hemp concrete are hemp content,lime content and pressure time,and the thermal insulation performance of concrete is the best when hemp content is 45%,lime content is 45%,and pressure time is 10 min.The factors influencing the mechanical properties of hemp concrete are hemp content,lime content and pressure time in order.When hemp content is 15%,lime content is 15%and pressure time is 30 min,the compressive capacity of concrete is the best.By adding an appropriate amount of hemp stalk core,the thermal insulation performance of concrete is improved under the premise of meeting the pressure resistance conditions.Through this method,not only the recycling of biomass waste can be achieved,but also energy conservation and environmental protection can be achieved.