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High-strength and high-ductility concrete
The invention relates to the technical field of concrete, and discloses a high-strength and high-ductility concrete. The concrete comprises, by weight, 40-50 parts of cement, 45-55 parts of quartz sand, 30-45 parts of fly ash, 35-65 parts of mineral powder, 0.5-1.5 parts of a water reducing agent, 3-9 parts of steel fibers, 2-5 parts of PVA fibers, 30-45 parts of water and the like. According to the high-strength and high-ductility concrete, the steel fibers are added, the steel fibers are high in tensile strength and toughness, a proper amount of steel fibers are doped in the concrete, the steel fibers are distributed in the concrete in a disordered mode, and an irregular net-shaped structure is formed, so that the tensile strength and the breaking strength of the concrete are remarkably improved, and the toughness and the impact strength of the concrete are greatly improved; and the PVA fibers are added, the PVA fibers have high elastic modulus, good acid and alkali resistance, high hydrophilic performance and high tensile strength, the toughness and impact strength of the concrete are further improved by doping the PVA fibers, the hybrid fibers of the PVA fibers and the steel fibers can generate a synergistic enhancement effect, and the strength and ductility of the concrete are improved.
本发明涉及混凝土技术领域，且公开了一种高强度高延性混凝土，包括以下重量份数配比的原料：水泥40‑50份、石英沙45‑55份、粉煤灰30‑45份、矿粉35‑65份、减水剂0.5‑1.5份、钢纤维3‑9份、PVA纤维2‑5份和水30‑45份等。该高强度高延性混凝土，通过添加钢纤维，钢纤维抗拉强度高，韧性强，混凝土中掺加适量的钢纤维，其在混凝土内部呈乱向分布，形成不规则的网状结构，显著提高混凝土抗拉强度及抗折强度，并大幅度地提高其韧性和抗冲击强度，通过添加PVA纤维，PVA纤维具有弹模高、耐酸碱性能好、亲水性能高以及较高的抗拉强度，PVA纤维的掺入进一步提高了混凝土的韧性和冲击强度，PVA纤维与钢纤维的混杂纤维可以产生协同增强效应，提高了混凝土的强度和延性。
High-strength and high-ductility concrete
The invention relates to the technical field of concrete, and discloses a high-strength and high-ductility concrete. The concrete comprises, by weight, 40-50 parts of cement, 45-55 parts of quartz sand, 30-45 parts of fly ash, 35-65 parts of mineral powder, 0.5-1.5 parts of a water reducing agent, 3-9 parts of steel fibers, 2-5 parts of PVA fibers, 30-45 parts of water and the like. According to the high-strength and high-ductility concrete, the steel fibers are added, the steel fibers are high in tensile strength and toughness, a proper amount of steel fibers are doped in the concrete, the steel fibers are distributed in the concrete in a disordered mode, and an irregular net-shaped structure is formed, so that the tensile strength and the breaking strength of the concrete are remarkably improved, and the toughness and the impact strength of the concrete are greatly improved; and the PVA fibers are added, the PVA fibers have high elastic modulus, good acid and alkali resistance, high hydrophilic performance and high tensile strength, the toughness and impact strength of the concrete are further improved by doping the PVA fibers, the hybrid fibers of the PVA fibers and the steel fibers can generate a synergistic enhancement effect, and the strength and ductility of the concrete are improved.
本发明涉及混凝土技术领域，且公开了一种高强度高延性混凝土，包括以下重量份数配比的原料：水泥40‑50份、石英沙45‑55份、粉煤灰30‑45份、矿粉35‑65份、减水剂0.5‑1.5份、钢纤维3‑9份、PVA纤维2‑5份和水30‑45份等。该高强度高延性混凝土，通过添加钢纤维，钢纤维抗拉强度高，韧性强，混凝土中掺加适量的钢纤维，其在混凝土内部呈乱向分布，形成不规则的网状结构，显著提高混凝土抗拉强度及抗折强度，并大幅度地提高其韧性和抗冲击强度，通过添加PVA纤维，PVA纤维具有弹模高、耐酸碱性能好、亲水性能高以及较高的抗拉强度，PVA纤维的掺入进一步提高了混凝土的韧性和冲击强度，PVA纤维与钢纤维的混杂纤维可以产生协同增强效应，提高了混凝土的强度和延性。
High-strength and high-ductility concrete
一种高强度高延性混凝土
WANG XUEZHEN (author) / WAN YUFAN (author) / RONG JIE (author) / ZHOU GUOCHAO (author)
2021-10-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Micromechanics of High-Strength, High-Ductility Concrete
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