Application of sea sand for 3D concrete printing

16th International Conference of Students and Young Scientists "Prospects of Fundamental Sciences Development"

自然科学（总论）

Sharanova, A.V.^1 ; Tovpinets, A.O.^1 ; Dmitrieva, M.A.^1

Immanuel Kant Baltic Federal University, 14 Nevskogo St, Kaliningrad

236016, Russia^1

关键词: Additive technology;    Comparative analysis;    Concrete printings;    Fine-grained concretes;    Sea sand;    Setting time;    Strength of concrete;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/597/1/012033/pdf
DOI  :  10.1088/1757-899X/597/1/012033

学科分类：自然科学（综合）

来源: IOP

【 摘 要 】

The paper shows the promising use of sea sand for additive technologies in construction. The use of sea sand reduces the setting time of the concrete mix and increases the initial strength compared to conventional quarry construction sand. A comparative analysis of the characteristics of sea and quarry sands was performed. It has been experimentally proven that the use of sea sand instead of quarry sand in fine-grained concrete mix leads to a decrease in the setting time of the fresh mix and an increase in the strength of concrete samples. The flexural strength and compressive strength of samples containing sea sand at the age of 28 days increases by 35.7% and 16.7%, respectively, comparing to samples containing quarry sand.