An Innovative Use of Recycled Waste Tire Rubber in Superior Hydrophobic Cement/Concrete

Tuesday, June 10, 2025

1:30pm – 1:50pm ET

Location: 302C

Author(s)

MS

Mark Zih Yao Shen

Shinchuang Technology Co. Ltd.

Co-Author(s)

Chih C. Chao, PhD (he/him/his)

Principal
Cantech Environmental Services, ON, Canada
TL

Tzong-Bin Lin

Shinchuang Technology Co. Ltd.
CC

Chi-Yao Chen

Shinchuang Technology Co. Ltd.
ML

Maw-Tien Lee

Shinchuang Technology Co. Ltd.
YC

Yin-Hsien Chen

Shinchuang Technology Co. Ltd.
FC

Fang-Pin Chen

Shinchuang Technology CO.Ltd.

Rubber particles from waste rubber tires are used as the carrier for the modified hydrophobic agents (waste or virgin petroleum-based oils with surfactants), in the form of modified rubber powder (MRP). MRP replacing a part of sand is mixed with the cementitious mixture under the novel “dispersed water phase in the continuous oil phase (W/O)” during hydration. With optimized MRP composition, the cementitious mixture, such as mortar, or concrete exhibits substantially improved hydrophobicity, maintaining or even increasing its mechanical strength compared to the conventional cementitious mixture without MRP. Commercial applications of MRP on hydrophobic mortar and concrete have proven to meet or exceed the product property requirements.