..., its mechanical strength is limited by poor interaction between the organic aggregates and cementitious binders. Existing knowledge is reviewed in this paper, and chemical surface treatments to improve hemp–binder compatibility are explored. In the experimental work, sodium hydroxide (NaOH), calcium...

...% substitutions of FA for sand, the workability, compressive strength and split tensile strength were evaluated and compared with conventional concrete. The results showed that replacing 40% of sand with FA increased the split tensile strength by 15.45%, increased the compressive strength by 29.94% and reduced...

...He-Xiang Wu; Wen-Xu Yang; Shuang-Xin Li; Yun-Peng Zhao; Quan-Sheng Sun The effects of different dosages of expanded perlite (as a carrier for bacteria) and nanosilica on the strength and self-healing properties of cement mortar were investigated. The strengths of specimens at different curing ages...

.... Aqueous solutions were prepared, using a wet-dispersion technique to disperse GNPs in the mixing water. Concrete batches were prepared using different GNP fractions (0.05, 0.1, 0.25, 0.5, 1 and 2% by weight of cement), and their compressive, flexural and tensile strengths were determined at 28 days...

...Hui Li; Li Li; Ning Zhang; Qi Feng Using geopolymer composites to reduce the use of Portland cement can decrease carbon dioxide emissions. The focus of this study was on improving the strength of a geopolymer composite by assessing the positive hybrid effect of nano-calcium carbonate (NCC...