Waste-based cementitious composites with cardboard, sawdust, and spent coffee grounds: A comparative screening study

This dataset supports a comparative screening study of cementitious composites containing sawdust, recycled cardboard, or spent coffee grounds as partial volumetric replacements for fine aggregate. It contains mix proportions, batch-level slump measurements, specimen mass, testing assignments, peak loads, compressive and splitting-tensile strengths, nominal density, and mixture-level descriptive statistics for 11 mixtures and 33 final cylindrical specimens. The dataset comprises two compression specimens and one splitting-tensile specimen per mixture; accordingly, the tensile results and other limited-replication measurements should be interpreted descriptively.本数据集可支撑以锯末（sawdust）、回收纸板（recycled cardboard）或废弃咖啡渣（spent coffee grounds）作为细骨料（fine aggregate）体积部分替代料的胶凝复合材料（cementitious composites）对比筛选研究。数据集包含11组配合比与33个最终圆柱试件（cylindrical specimens）的相关数据，具体包括配合比参数、批次坍落度测试结果、试件质量、试验分配方案、峰值荷载（peak loads）、抗压强度与劈裂抗拉强度（splitting-tensile strengths）、标称密度（nominal density），以及各组配合比的描述性统计量（descriptive statistics）。每组配合比对应2个抗压试件与1个劈裂抗拉试件，据此，抗拉试验结果及其他重复次数有限的测量数据仅可进行描述性解读。