Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Self-curing micro-expansion ultra-high performance concrete and preparation method thereof
The invention discloses self-curing micro-expansion ultra-high performance concrete and a preparation method thereof. The self-curing micro-expansion ultra-high performance concrete is mainly prepared from cement, fly ash, silica fume, an expanding agent, river sand, ceramsite, steel fibers, water and a water reducing agent, wherein the cement accounts for 1 part by mass, the fly ash accounts for 0.3-0.5 part by mass, the silica fume accounts for 0.1-0.2 part by mass, the river sand accounts for 1.04-1.56 parts by mass, the mixing water accounts for 0.3-0.4 part by mass, and the water reducing agent accounts for 1-3% of the cementing material; and cement is doped in the expanding agent, the doping amount is 9-12%, the addition amount of the ceramsite is 10-40% of the overall volume fraction, and the addition quantity of the steel fibers is 2-5% of the overall volume fraction. According to the preparation method, the ultrahigh-performance concrete with controllable expansion performance is prepared on the premise of not influencing the mechanical performance through the cooperation of pre-water absorption of the internal curing material ceramsite, replacement of part of river sand by a volumetric method, water release of the internal curing material and the action of the expanding agent, and the ultrahigh-performance concrete has excellent performance such as micro-expansion and is wide in application prospect.
本发明公开了一种自养护微膨胀的超高性能混凝土及其制备方法，其主要成分包括水泥、粉煤灰、硅灰、膨胀剂、河砂、陶粒、钢纤维、水、减水剂；所述的水泥为1质量份，所述的粉煤灰为0.3‑0.5质量份，所述的硅灰为0.1‑0.2质量份，所述的河砂为1.04‑1.56质量份，所述的拌合水为0.3‑0.4质量份，所述的减水剂为胶凝材料的1‑3％；所述膨胀剂内掺杂有水泥，且掺量9‑12％，所述陶粒的加入量为整体体积分数的10‑40％，所述的钢纤维加入量为整体体积分数的2‑5％。本发明通过内养护材料陶粒预吸水，体积法替代一部分河砂，内养护材料释水和膨胀剂作用发挥的配合，在不影响力学性能的前提下，制备出一种膨胀性能可控的超高性能混凝土，并且具有微膨胀等优异性能，应用前景广阔。
Self-curing micro-expansion ultra-high performance concrete and preparation method thereof
The invention discloses self-curing micro-expansion ultra-high performance concrete and a preparation method thereof. The self-curing micro-expansion ultra-high performance concrete is mainly prepared from cement, fly ash, silica fume, an expanding agent, river sand, ceramsite, steel fibers, water and a water reducing agent, wherein the cement accounts for 1 part by mass, the fly ash accounts for 0.3-0.5 part by mass, the silica fume accounts for 0.1-0.2 part by mass, the river sand accounts for 1.04-1.56 parts by mass, the mixing water accounts for 0.3-0.4 part by mass, and the water reducing agent accounts for 1-3% of the cementing material; and cement is doped in the expanding agent, the doping amount is 9-12%, the addition amount of the ceramsite is 10-40% of the overall volume fraction, and the addition quantity of the steel fibers is 2-5% of the overall volume fraction. According to the preparation method, the ultrahigh-performance concrete with controllable expansion performance is prepared on the premise of not influencing the mechanical performance through the cooperation of pre-water absorption of the internal curing material ceramsite, replacement of part of river sand by a volumetric method, water release of the internal curing material and the action of the expanding agent, and the ultrahigh-performance concrete has excellent performance such as micro-expansion and is wide in application prospect.
本发明公开了一种自养护微膨胀的超高性能混凝土及其制备方法，其主要成分包括水泥、粉煤灰、硅灰、膨胀剂、河砂、陶粒、钢纤维、水、减水剂；所述的水泥为1质量份，所述的粉煤灰为0.3‑0.5质量份，所述的硅灰为0.1‑0.2质量份，所述的河砂为1.04‑1.56质量份，所述的拌合水为0.3‑0.4质量份，所述的减水剂为胶凝材料的1‑3％；所述膨胀剂内掺杂有水泥，且掺量9‑12％，所述陶粒的加入量为整体体积分数的10‑40％，所述的钢纤维加入量为整体体积分数的2‑5％。本发明通过内养护材料陶粒预吸水，体积法替代一部分河砂，内养护材料释水和膨胀剂作用发挥的配合，在不影响力学性能的前提下，制备出一种膨胀性能可控的超高性能混凝土，并且具有微膨胀等优异性能，应用前景广阔。
Self-curing micro-expansion ultra-high performance concrete and preparation method thereof
一种自养护微膨胀的超高性能混凝土及其制备方法
HUANG ZHANWEI (Autor:in) / LIANG YULONG (Autor:in)
08.10.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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