Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Early-strength low-shrinkage high-flow-state high-performance concrete for pre-tensioned beam and preparation method thereof
The invention discloses early-strength low-shrinkage high-flow-state high-performance concrete for a pre-tensioned beam. The early-strength low-shrinkage high-flow-state high-performance concrete is prepared from the following components in parts by weight: 520-560 parts of a cementing material, 630-702 parts of medium sand, 1068-1152 parts of gravel, 20 parts of an inorganic mineral early-strength agent, 4.68-8.4 parts of a water reducing agent and 130-140 parts of water. The invention further discloses a preparation method of the early-strength low-shrinkage high-flow-state high-performance concrete for the pre-tensioned beam. The concrete has the beneficial effects that the quality defect of concrete caused by incapability of vibrating or incompact vibrating can be reduced, and meanwhile, the appearance quality is good; the early strength of the concrete is improved, the later strength and durability are not affected, the 40-hour strength is larger than 60 MPa, the 40-hour elastic modulus is larger than 31.5 GPa, a site construction technology can be rapidly matched, and efficient operation of project production with quality guarantee is achieved; the steam-curing-free early-strength high-flow-state high-performance concrete with excellent durability is formed; the compactness of the concrete is improved, and low shrinkage and high performance of the concrete are ensured.
本发明公开一种用于先张法梁的早强低收缩高流态高性能混凝土，由以下重量份数组分制成：胶凝材料520‑560、中砂630‑702、碎石1068‑1152、无机矿物早强剂20、减水剂4.68‑8.4、水130‑140。本发明还公开用于先张法梁的早强低收缩高流态高性能混凝土的制备方法。本发明的有益效果是：可降低因无法振捣或振捣不密实所带来的混凝土质量缺陷，同时外观质量良好；提升混凝土早期强度且不影响后期强度和耐久性，40h强度大于60MPa、40h弹性模量大于31.5GPa，可较快匹配现场施工工艺，实现有质量保证的项目生产的高效运转；形成免蒸养早强耐久性能优异的高流态高性能混凝土；提升了混凝土的致密性，确保了混凝土的低收缩和高性能。
Early-strength low-shrinkage high-flow-state high-performance concrete for pre-tensioned beam and preparation method thereof
The invention discloses early-strength low-shrinkage high-flow-state high-performance concrete for a pre-tensioned beam. The early-strength low-shrinkage high-flow-state high-performance concrete is prepared from the following components in parts by weight: 520-560 parts of a cementing material, 630-702 parts of medium sand, 1068-1152 parts of gravel, 20 parts of an inorganic mineral early-strength agent, 4.68-8.4 parts of a water reducing agent and 130-140 parts of water. The invention further discloses a preparation method of the early-strength low-shrinkage high-flow-state high-performance concrete for the pre-tensioned beam. The concrete has the beneficial effects that the quality defect of concrete caused by incapability of vibrating or incompact vibrating can be reduced, and meanwhile, the appearance quality is good; the early strength of the concrete is improved, the later strength and durability are not affected, the 40-hour strength is larger than 60 MPa, the 40-hour elastic modulus is larger than 31.5 GPa, a site construction technology can be rapidly matched, and efficient operation of project production with quality guarantee is achieved; the steam-curing-free early-strength high-flow-state high-performance concrete with excellent durability is formed; the compactness of the concrete is improved, and low shrinkage and high performance of the concrete are ensured.
本发明公开一种用于先张法梁的早强低收缩高流态高性能混凝土，由以下重量份数组分制成：胶凝材料520‑560、中砂630‑702、碎石1068‑1152、无机矿物早强剂20、减水剂4.68‑8.4、水130‑140。本发明还公开用于先张法梁的早强低收缩高流态高性能混凝土的制备方法。本发明的有益效果是：可降低因无法振捣或振捣不密实所带来的混凝土质量缺陷，同时外观质量良好；提升混凝土早期强度且不影响后期强度和耐久性，40h强度大于60MPa、40h弹性模量大于31.5GPa，可较快匹配现场施工工艺，实现有质量保证的项目生产的高效运转；形成免蒸养早强耐久性能优异的高流态高性能混凝土；提升了混凝土的致密性，确保了混凝土的低收缩和高性能。
Early-strength low-shrinkage high-flow-state high-performance concrete for pre-tensioned beam and preparation method thereof
一种用于先张法梁的早强低收缩高流态高性能混凝土及其制备方法
FU HAOBING (Autor:in) / WU WEIHAO (Autor:in) / LIU XINLAI (Autor:in) / YANG CHAO (Autor:in) / LIU SHUIZHOU (Autor:in) / LI TIANHAN (Autor:in) / HUANG XIANG (Autor:in)
22.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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