Strength Behaviors of PP Fiber-Reinforced Soil
Journal
Lecture Notes in Civil Engineering
Series/Report No.
Lecture Notes in Civil Engineering
Journal Volume
448
Start Page
305
End Page
314
ISSN
2366-2557
2366-2565
ISBN (of the container)
9789819992263
ISBN
9789819992263
9789819992270
Date Issued
2024
Author(s)
DOI
10.1007/978-981-99-9227-0_28
Abstract
Soil mixing method is a simple and economical operation in ground improvement. In recognizing carbon deduction during construction, it is important that the compressive strength, tensile strength, and bending moment can meet the requirement under working condition while reducing the amount of cement used. In this paper, we utilized Ottawa sand, Portland cement, and polypropylene (PP) fiber as the reinforced material to evaluate the mechanical behaviors of the material due to the addition of PP fibers. Specimen configurations include 5% cement addition by weight, water–cement ratios 1.0, PP fiber additions (0, 0.25%, 0.5%, and 1.0% by weight), and fiber length (6 and 12 mm). Unconfined compressive tests, Brazilian tests, and 3-point bending tests were performed to evaluate the effectiveness of fiber reinforcement through peak strength ratio, brittleness index, and toughness index. Test results indicated that at 28 curing days, the compressive strength, tensile strength, and bending moments capacity increased by 17%, 13%, and 28%, respectively. Furthermore, adding PP fibers increases the toughness so that the use of reinforcing steel can be reduced for diaphragm wall construction.
Event(s)
2nd International Conference on Construction Resources for Environmentally Sustainable Technologies, CREST 2023Fukuoka20 November 2023到 22 November 2023
Subjects
Brazilian test
Polypropylene fiber
Soil mixing method
Three-point bending test
Unconfined compressive test
SDGs
Publisher
Springer Nature Singapore
Type
conference paper