Three-dimensional printed concrete (3DPC) is emerging as a new building material. Due to automation, this method dramatically decreases construction time and material wastage while increasing quality. Despite the mentioned benefits, technology faces various issues. Among these issues, inability use steel bars for reinforcement early age cracking because of low water-to-binder ratio high amount ...

The market demand for manufactured sand has grown rapidly, and the solution to problem of optimum stone powder content from concrete is imminent. workability, early age shrinkage strain cracking, strength, chloride ion penetration, pore structures with different contents were tested study influence concrete. test results show that addition beneficial in improving working performance But at same...

This research assessed the shrinkage behavior of mortar containing recycled sand generated from aerated blocks and clay bricks by replacing natural with a volume ratio 30%. Five mix proportions were prepared to cast plate specimens. They named as control, ABs1, ABs2, CBs1 CBs2. Among them, ABs1 CBs1, respectively, have same water/cement control. ABs2 CBs2 had workability control adjusting requi...