Developing Low-pH 3D Printing Concrete Using Solid Wastes

Xiaosheng Li

doi:10.3390/buildings13020454

2023-02-07

Xiaosheng Li *

Long Li

Shuai Zou

DOI：10.3390/buildings13020454

原文链接

原文求助

摘要

En 中文

Three-dimensional concrete printing technology provides the possibility to fabricate specific and eco-friendly concrete components for application on shorelines or in other areas, providing environmental protection. In this study, solid wastes in Hong Kong are employed for low-pH 3D printing concrete to further decrease the impact on the environment. The results indicate that WGP replacement in a classic low-pH recipe leads to lower yield stress and surface pH, as well as volume stability. The employment of slag improves workability and printability, but maintains the surface pH and drying shrinkage. The printing height is not merely determined by slump flow, and contributions from every binder on the surface pH are quantified based on simplified calculations. Reducing OPC and increasing SF in the classic low-pH recipe achieves the best printing performance and improved environmental friendliness.

Keyword:

3D concrete printing

low pH

low carbon

buildability

期刊

Buildings

IF:

3.1

论文数:

1.8W

被引数:

2.5W

机构

hong kong polytechnic university

学者数:

3.0W

论文数: 4.1W

被引数: 921

引用论文

Abstract: Craniofacial Surgical Planning with Augmented Reality: Accuracy of Linear 3D Cephalometric Measurements on 3D Holograms

Plastic and Reconstructive Surgery - Global Open

IF0

2017-09-01

OAAI

Kihyun Cho; Jeff Yanof; Graham S. Schwarz; Karl West; Hirsh Shah; Maria Madajka; Jennifer McBride; Bahar Bassiri Gharb; Antonio Rampazzo; Francis A. Papay

Effect of fly ash on concrete reinforcement corrosion studied by EIS

CEMENT & CONCRETE COMPOSITES

IF13.1

2000-06-01

153

PREAI

Montemor, MF; Simoes, AMP; Salta, MM

Effects of polycarboxylate superplasticizers with different molecular structure on the hydration behavior of cement paste 不同分子结构聚羧酸减水剂对水泥浆体水化行为的影响

CONSTRUCTION AND BUILDING MATERIALS

IF8

2016-02-01

180