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High-strength ultrahigh-pumping self-compacting concrete and preparation method thereof
The invention discloses high-strength ultrahigh-pumping self-compacting concrete and a preparation method thereof. The high-strength ultrahigh-pumping self-compacting concrete comprises the following raw materials: 380-420 kg/m<3> of composite cement, 180-220 kg/m<3> of an enhanced composite admixture, 640-680 kg/m<3> of grading machine-made sand, 920-960 kg/m<3> of gravel, 10-14 kg/m<3> of a high-efficiency water reducing agent, 1-5 kg/m<3> of a slow release agent, 20-30 kg/m<3> of a reinforcing agent and 4-7 kg/m<3> of a compacting and stabilizing component, wherein the water cement ratio is controlled in a range of 0.24-0.26. According to the invention, the ultrahigh pumping of the concrete can be realized, the high-workability concrete is not layered, not bleeding and not segregated, the concrete still has self-compacting performance after pumping, and the stable development of strength is ensured.
本发明公开了一种高强超高泵送自密实混凝土及其制备方法，该高强超高泵送自密实混凝土中各原料的用量为：复合水泥380‑420kg/m3、增强型复合掺合料180‑220kg/m3、级配机制砂640‑680kg/m3、碎石920‑960kg/m3、高效减水剂10‑14kg/m3、缓释剂1‑5kg/m3、增强剂20‑30kg/m3、密实稳定组分4‑7kg/m3、水灰比控制范围为0.24‑0.26。本发明可以在实现混凝土超高泵送的同时，保持高工作性的混凝土不分层、不泌水、不离析，泵送后依旧具有自密实性能，同时保证强度的稳定发展。
High-strength ultrahigh-pumping self-compacting concrete and preparation method thereof
The invention discloses high-strength ultrahigh-pumping self-compacting concrete and a preparation method thereof. The high-strength ultrahigh-pumping self-compacting concrete comprises the following raw materials: 380-420 kg/m<3> of composite cement, 180-220 kg/m<3> of an enhanced composite admixture, 640-680 kg/m<3> of grading machine-made sand, 920-960 kg/m<3> of gravel, 10-14 kg/m<3> of a high-efficiency water reducing agent, 1-5 kg/m<3> of a slow release agent, 20-30 kg/m<3> of a reinforcing agent and 4-7 kg/m<3> of a compacting and stabilizing component, wherein the water cement ratio is controlled in a range of 0.24-0.26. According to the invention, the ultrahigh pumping of the concrete can be realized, the high-workability concrete is not layered, not bleeding and not segregated, the concrete still has self-compacting performance after pumping, and the stable development of strength is ensured.
本发明公开了一种高强超高泵送自密实混凝土及其制备方法，该高强超高泵送自密实混凝土中各原料的用量为：复合水泥380‑420kg/m3、增强型复合掺合料180‑220kg/m3、级配机制砂640‑680kg/m3、碎石920‑960kg/m3、高效减水剂10‑14kg/m3、缓释剂1‑5kg/m3、增强剂20‑30kg/m3、密实稳定组分4‑7kg/m3、水灰比控制范围为0.24‑0.26。本发明可以在实现混凝土超高泵送的同时，保持高工作性的混凝土不分层、不泌水、不离析，泵送后依旧具有自密实性能，同时保证强度的稳定发展。
High-strength ultrahigh-pumping self-compacting concrete and preparation method thereof
一种高强超高泵送自密实混凝土及其制备方法
WANG HAO (author) / ZHANG FANG (author) / LIAO HONGYU (author)
2021-12-07
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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