期刊
JOURNAL OF BUILDING ENGINEERING
卷 32, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jobe.2020.101522
关键词
Prepacked aggregates fiber-reinforced concrete; Drying shrinkage; Creep; Waste polypropylene fibers; Palm oil fuel ash
资金
- Deanship of Scientific Research at King Saud University
Prepacked aggregate concrete (PAC) is a particular form of concrete that is manufactured by placing and packing aggregates with different sizes in a formwork, and the spaces between the aggregates are then filled through the injection of cement grout with high flowability. This study proposed the prepacked aggregates fiber-reinforced concrete (PAFRC), which is a newly developed concrete, with a unique combination of coarse aggregate and short polypropylene (PP) fiber that is premixed and placed in the formworks. This study presents the outcomes of an investigational work that addresses creep and drying shrinkage performance in addition to the strength development of PAFRC specimens. In addition, palm oil fuel ash (POFA) was used at the substitution level of 20%. Six mixes comprising fiber volume fractions of 0-1.25% with a length of 30 mm were cast by gravity technique. Another six mixtures with the same fiber volume fractions were cast using a pump to inject the grout into the formwork. The experimental outcomes exposed that utilization of waste PP fibers and POFA improved the compressive strength of PAFRC mixes. The drying shrinkage and creep of PAFRC mixes reduced significantly with the addition of waste PP fibers. Moreover, due to the lower drying shrinkage and creep, as well as the unique production technique, PAFRC could be used for several innovative applications in construction.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据