Cementitious composites, including ferrocement and continuous fiber reinforced cement, are increasingly considered for building construction and repair. One alternative in processing of these composites is to infiltrate the reinforcement (continuous fibers or chicken mesh) with a flowable cementitious slurry. The relatively high density of cementitious binders, when compared with polymeric binders, are a setback in efforts to introduce cementitious composites as lower-cost, fire-resistant, and durable alternatives to polymer composites. Aeration of the slurry is an effective means of reducing the density of cementitious composites. This approach, however, compromises the mechanical properties of cementitious binders. An experimental program was undertaken in order to assess the potential for production of aerated slurry with a desired balance of density, mechanical performance, and barrier qualities. The potential for nondestructive monitoring of strength development in aerated cementitious slurry was also investigated. This research produced aerated slurries with densities as low as 0.9 g/cm3 with viable mechanical and barrier qualities for production of composites. The microstructure of these composites was also investigated.
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机译：越来越多地考虑将水泥复合材料，包括高铁和连续纤维增强水泥，用于建筑施工和维修。这些复合材料加工的一种替代方法是用可流动的水泥浆浸渗增强材料（连续纤维或鸡眼网）。当与聚合物粘合剂相比时，相对高密度的水泥粘合剂阻碍了将水泥复合材料作为聚合物复合材料的低成本，耐火和耐用的替代物引入的努力。浆料的曝气是降低水泥复合材料密度的有效手段。然而，这种方法损害了胶结粘合剂的机械性能。进行了一个实验程序，以评估产生充气浆的潜力，并希望在密度，机械性能和阻隔质量之间取得理想的平衡。还研究了充气水泥浆中强度发展的非破坏性监测潜力。这项研究生产了密度低至0.9 g / cm 3 的充气浆料，具有可行的机械性能和阻隔性，可生产复合材料。还研究了这些复合材料的微观结构。
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