Tao Ding

TL;DR: It is shown that cement proportion and transportation are the top two contributors for carbon dioxide emissions and energy consumption for both NAC and RAC, and sensitivity analysis proves that long delivery distances for natural coarse aggregate (NCA) leave a possible opportunity for lowering environmental impact of RAC in China.

TL;DR: It is concluded that approximately 13.71 million tons of C&D waste was generated in 2012 in Shanghai, of which more than 80% of this C&d waste was concrete, bricks and blocks.

TL;DR: In this paper, the carbon footprint of two identical twin towers, with one tower made of recycled aggregate concrete and the other made of natural aggregate concrete, was investigated, and the results indicated that adoption of recycling aggregate concrete as structural material in the high-rise structure can result in up to about 2.175 × 105 kgCe decrease in carbon footprint in condition of this specific project.

TL;DR: In this article, the authors employed the recycled sand instead of natural sand to achieve 3D concrete printing and investigated the hardened properties of this extrusion-based material based on compressive tests, tensile splitting tests and flexural tests.

TL;DR: In this article, the authors evaluated the environmental impact and economic benefit of 3D printed buildings made of recycled concrete employing life-cycle assessment tools, and found that although increases in using recycled aggregate could produce less pollutant emissions, the Environmental impact caused by 3D printing concrete construction is generally larger than traditional cast-in-situ concrete construction.