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Isoresponses for strength, permeability and porosity of high performance mortar

机译：高性能砂浆的强度，渗透性和孔隙率等响应

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This investigation is aimed at developing high performance-low environmental impact concrete utilising blends of pozzolanic by-product materials as cement replacing materials. Pulverised fuel ash (PFA) and Silica fume (SF) were used in ternary systems with the aim of exploiting the potential synergy between these materials, thus reducing or eliminating limitations inherent in individual materials. Compressive strength, oxygen permeability and porosity results at various ages are reported. Mortar containing 0%, 20%, 30% and 40% PFA to which 0%, 5%, 10% and 15% SF were incorporated as partial cement replacements, for the preparation of various combinations of ternary blended cement. A water-binder ratio of 0.27 was used throughout. Based on the experimentally obtained results, prediction models were developed. These enabled the establishment of isoresponse contours showing the interaction between the parameters investigated. It was found that the incorporation of 8-12% SF as cement replacement yielded the optimum performance, resulting in the lowest permeability and porosity values for all levels of PFA.
机译：这项研究旨在开发利用火山灰副产品材料的混合物作为水泥替代材料的高性能，低环境影响混凝土。三元系统中使用了粉煤灰（PFA）和硅粉（SF），目的是利用这些材料之间的潜在协同作用，从而减少或消除单个材料固有的局限性。报告了不同年龄下的抗压强度，透氧性和孔隙率结果。掺入0％，20％，30％和40％PFA的砂浆，其中0％，5％，10％和15％SF用作部分水泥替代品，用于制备三元混合水泥的各种组合。始终使用0.27的水粘合剂比率。根据实验获得的结果，开发了预测模型。这些使得能够建立表示反应参数之间相互作用的等响应线。已发现掺入8-12％的SF作为水泥替代品可产生最佳性能，从而在所有PFA含量下均具有最低的渗透率和孔隙率值。

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