The high shape-holding ability of no-slump concretes (NSC) allows is widely used in roller-compacted and prefabricated concrete. However, it is limited by its low strength properties, and low tensile properties, which lead to potential durability problem in prefabricated concrete. Therefore, this paper aims to investigate the synergy effect in tensile properties of no-slump high-strength high-ductility concrete (NSHSDC) based on polyethylene (PE) and steel fibers (SF). The compressive, flexural, and tensile strength of NSHSDC with three different water-to-binder ratios (w/b) reinforced by 0.0, 1.5 vol% of PE fiber were evaluated. The composites with 16.8% w/b were filtered out due to its poor mechanical properties. The reinforcement characteristics of compressive, flexural, and tensile strength between 16.2% and 17.2% w/b were then compared and analyzed. All composites exhibited a similar compressive strength (>120 MPa), NSHSDC hybrids with different fiber lengths exhibited a flexural strength, tensile strength, and tensile energy absorbing capacity higher than other composites at approximately 18.4%, 14.5%, and 5.4%, respectively. The composites with 17.2% w/b exhibited great mechanical properties than composites with 16.4% w/b; thus, the need for further analysis of its synergy assessment. The composites with 17.2% w/b exhibited a positive synergy and composite hybrids with different fiber lengths established a perfect synergy.

无坍落度混凝土（NSC）的高保形能力可广泛用于压实和预制混凝土中。但是，它受到其低强度性能和低拉伸性能的限制，这导致了预制混凝土的潜在耐久性问题。因此，本文旨在研究基于聚乙烯（PE）和钢纤维（SF）的无坍落度高强度高延性混凝土（NSHSDC）拉伸性能的协同效应。评估了以0.0、1.5 ％（体积）的PE纤维增强的三种不同水胶比（w / b）的NSHSDC的抗压，抗弯和抗张强度。w / b为16.8％的复合材料由于其较差的机械性能而被过滤掉。然后比较和分析了在16.2％和17.2％w / b之间的压缩，弯曲和拉伸强度的增强特性。所有复合材料均表现出相似的抗压强度（> 120 MPa），具有不同纤维长度的NSHSDC杂化材料显示出比其他复合材料更高的抗弯强度，拉伸强度和拉伸能量吸收能力，分别约为18.4％，14.5％和5.4％。w / b为17.2％的复合材料比w / b为16.4％的复合材料具有更好的机械性能。因此，需要对其协同评估进行进一步分析。w / b为17.2％的复合材料 表现出积极的协同作用，不同纤维长度的复合杂种建立了完美的协同作用。