农业与建筑废弃物对含电气石粉的氯氧镁水泥基砂浆性能的影响
Effect of Agriculture and Construction Wastes on the Properties of Magnesium Oxychloride Cement Mortar with Tourmaline Powder.
作者信息
Chen Xue-Fei, Kou Shi-Cong, Xing Feng
机构信息
School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Department of Civil Engineering, Shenzhen University, Shenzhen 518000, China.
出版信息
Materials (Basel). 2018 Dec 31;12(1):115. doi: 10.3390/ma12010115.
This research attempted to develop an environmentally-friendly functional building mortar by the combined use of agriculture wastes (agro-wastes) and construction wastes in magnesium oxychloride cement (MOC). The agro-wastes referred to corn stalk (CS) and saw dust (SD), which were used to improve the flexural properties of host cementitious material, whilst the construction wastes referred to recycled clay brick powder (CBP), which was employed to enhance compressive strength and water resistance. Moreover, tourmaline powder (TP) was added as a negative ion-inducing admixture, at a fixed dosage of 10% by weight of MgO, to bestow air-improving functions on the end products. Results showed the flexural strength of MOC was enhanced by the addition of CS and SD. Besides, the incorporation of CBP improved the water resistance in a dosage-dependent way. In addition, the specimens containing CS and SD also had better negative ion-inducing performance due to their higher porosity. Overall, the study provided a feasible and attractive approach to recycle agro- and construction wastes for the production of air purifying mortar. The developed mortar possesses an eco-friendly nature (simultaneous reuse of various waste materials and improvement of the air quality).
本研究试图通过在氯氧化镁水泥（MOC）中联合使用农业废弃物（农业废料）和建筑废弃物来开发一种环保型功能性建筑砂浆。农业废料指的是玉米秸秆（CS）和锯末（SD），它们被用于改善主体胶凝材料的抗弯性能，而建筑废弃物指的是再生粘土砖粉（CBP），其用于提高抗压强度和耐水性。此外，添加了电气石粉（TP）作为负离子诱导外加剂，其用量为MgO重量的10%，以赋予最终产品改善空气的功能。结果表明，添加CS和SD提高了MOC的抗弯强度。此外，加入CBP以剂量依赖的方式改善了耐水性。此外，由于含有CS和SD的试样孔隙率较高，它们还具有更好的负离子诱导性能。总体而言，该研究为回收农业和建筑废弃物以生产空气净化砂浆提供了一种可行且有吸引力的方法。所开发的砂浆具有生态友好的特性（同时再利用各种废料并改善空气质量）。
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