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Comprehensive investigation into the effect of the newly developed natural foaming agents and water to solids ratio on foam concrete behaviour
Journal of Building Engineering ( IF 6.4 ) Pub Date : 2022-08-05 , DOI: 10.1016/j.jobe.2022.105042
Khwairakpam Selija , Indu Siva Ranjani Gandhi

Keeping in view of sustainable development, the present study attempts to use the natural surfactants valorized and extracted from two different biological sources namely sesame seed (rich in protein) and hingot fruit (rich in saponin) in foamed concrete production. Studies on relative behavior of concrete produced using these surfactants could help the industry to gain confidence in the usage of recommended natural surfactants presenting new sight in improving the environmental impact of foam concrete. Another main facet of this work is to carry out an extensive experimental investigation on the effect of water-solids ratio on the various characteristics of foam concrete on which only very limited studies are available in literature. The role of water-solids ratio on various physical, mineralogical and mechanical properties of foam concrete have been considered for range of densities. The results show that performance of foam concrete with different foaming agents varies greatly due to creation of different void structure in concrete. The consistency of hingot foam concrete mixes is relatively higher than that of sesame foam concrete mixes due to the relatively lesser viscosity of the hingot surfactant solution. Due to the above-mentioned reason, hingot foam concrete mixes exhibit bigger size air voids when compared to sesame. Another important observation is that there is an optimum water-solids for a particular density of foam concrete which results in maximum strength. The optimized water-solids ratio derived for various mixes is justified with air void structure. The experimental outcomes proved the insight that the mechanical behaviour of porous material depends not only on porosity but also on the pore size distribution.



中文翻译:

综合研究新开发的天然发泡剂和水固比对泡沫混凝土性能的影响

考虑到可持续发展,本研究试图在泡沫混凝土生产中使用从两种不同生物来源即芝麻(富含蛋白质)和刺果(富含皂苷)中获得价值和提取的天然表面活性剂。对使用这些表面活性剂生产的混凝土的相关行为进行研究可以帮助行业获得对使用推荐的天然表面活性剂的信心,这些表面活性剂在改善泡沫混凝土的环境影响方面呈现出新的视野。这项工作的另一个主要方面是对水固比对泡沫混凝土各种特性的影响进行广泛的实验研究,文献中只有非常有限的研究。水固比对各种物理的作用,泡沫混凝土的矿物学和力学性能已经考虑了密度范围。结果表明,由于混凝土中产生不同的空隙结构,不同发泡剂的泡沫混凝土性能差异很大。由于 hingot 表面活性剂溶液的粘度相对较小,因此 hingot 泡沫混凝土混合物的稠度相对高于芝麻泡沫混凝土混合物。由于上述原因,与芝麻相比,hingot 泡沫混凝土混合物表现出更大尺寸的气孔。另一个重要的观察结果是,对于特定密度的泡沫混凝土,存在一个最佳的水-固体,这会导致最大的强度。为各种混合物推导出的优化的水固比与气孔结构相吻合。

更新日期:2022-08-06
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