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High-strength and high-ductility cement-based composite material and preparation method thereof, and application of nano-cellulose in composite material
The invention provides a high-strength and high-ductility cement-based composite material, a preparation method of the high-strength and high-ductility cement-based composite material, and application of nano cellulose in the high-strength and high-ductility cement-based composite material. The high-strength and high-ductility cement-based composite material is prepared from cement, fly ash, superfine slag powder, silica fume, fine aggregate, micron fibers and nano cellulose, wherein the mass ratio of the cement to the fly ash to the superfine slag powder to the silica fume to the fine aggregate to the micron fibers to the nano cellulose is 1 to (0.2 to 0.5) to (0.3 to 1.0) to (0 to 0.1) to (0.5 to 1.0) to (0.01 to 0.025) to (0.0009 to 0.010). According to the invention, the nano cellulose is applied to the ECC, and the dispersing performance of the synthetic fiber in a cement-based material can be improved by adjusting the rheological property of a matrix; meanwhile, the synthetic fiber also plays a role in reversely promoting the dispersion of the nano cellulose in the cement-based material. And the compressive strength, the tensile strength and the extension performance of the ECC can be remarkably improved only by a relatively low mixing amount, and cement can be saved by 15% or more when the same strength grade is prepared.
本发明提供了一种高强高延性水泥基复合材料及其制备方法、纳米纤维素在高强高延性水泥基复合材料中的应用。该高强高延性水泥基复合材料包括水泥、粉煤灰、矿渣微粉、硅灰、细骨料、微米纤维和纳米纤维素；其中，水泥、粉煤灰、矿渣微粉、硅灰、细骨料、微米纤维和纳米纤维素的质量比为1：(0.2‑0.5)：(0.3‑1.0)：(0‑0.1)：(0.5‑1.0)：(0.01‑0.025)：(0.0009‑0.010)。本发明将纳米纤维素应用在ECC中，能通过调节基体流变性能，提高合成纤维在水泥基材料中的分散性能；同时，合成纤维也起到了反向促进纳米纤维素在水泥基材料中的分散作用。而且仅需较低的掺量，即可显著提高ECC的抗压强度、抗拉强度和延伸性能，在制备相同强度等级时，可节约水泥15％及以上。
High-strength and high-ductility cement-based composite material and preparation method thereof, and application of nano-cellulose in composite material
The invention provides a high-strength and high-ductility cement-based composite material, a preparation method of the high-strength and high-ductility cement-based composite material, and application of nano cellulose in the high-strength and high-ductility cement-based composite material. The high-strength and high-ductility cement-based composite material is prepared from cement, fly ash, superfine slag powder, silica fume, fine aggregate, micron fibers and nano cellulose, wherein the mass ratio of the cement to the fly ash to the superfine slag powder to the silica fume to the fine aggregate to the micron fibers to the nano cellulose is 1 to (0.2 to 0.5) to (0.3 to 1.0) to (0 to 0.1) to (0.5 to 1.0) to (0.01 to 0.025) to (0.0009 to 0.010). According to the invention, the nano cellulose is applied to the ECC, and the dispersing performance of the synthetic fiber in a cement-based material can be improved by adjusting the rheological property of a matrix; meanwhile, the synthetic fiber also plays a role in reversely promoting the dispersion of the nano cellulose in the cement-based material. And the compressive strength, the tensile strength and the extension performance of the ECC can be remarkably improved only by a relatively low mixing amount, and cement can be saved by 15% or more when the same strength grade is prepared.
本发明提供了一种高强高延性水泥基复合材料及其制备方法、纳米纤维素在高强高延性水泥基复合材料中的应用。该高强高延性水泥基复合材料包括水泥、粉煤灰、矿渣微粉、硅灰、细骨料、微米纤维和纳米纤维素；其中，水泥、粉煤灰、矿渣微粉、硅灰、细骨料、微米纤维和纳米纤维素的质量比为1：(0.2‑0.5)：(0.3‑1.0)：(0‑0.1)：(0.5‑1.0)：(0.01‑0.025)：(0.0009‑0.010)。本发明将纳米纤维素应用在ECC中，能通过调节基体流变性能，提高合成纤维在水泥基材料中的分散性能；同时，合成纤维也起到了反向促进纳米纤维素在水泥基材料中的分散作用。而且仅需较低的掺量，即可显著提高ECC的抗压强度、抗拉强度和延伸性能，在制备相同强度等级时，可节约水泥15％及以上。
High-strength and high-ductility cement-based composite material and preparation method thereof, and application of nano-cellulose in composite material
高强高延性水泥基复合材料及其制备方法、纳米纤维素在其中的应用
LIU QIAOLING (author) / ZHANG JINZHU (author) / FAN DECHAO (author) / LIANG LONG (author) / DONG QI (author) / LI HU (author)
2023-04-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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