Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Heat-resistant low-carbon concrete and preparation method thereof
The invention discloses heat-resistant low-carbon concrete and a preparation method thereof, and belongs to the technical field of concrete. The concrete is prepared from the following components in parts by weight: 300 to 350 parts of cement, 110 to 150 parts of composite admixture, 1000 to 1400 parts of refractory aggregate, 650 to 850 parts of granite stone silt, 50 to 60 parts of heat-shrinkable basalt fiber, 3.5 to 8.0 parts of water reducing agent and 142 to 165 parts of water, the preparation method of the refractory aggregate comprises the following steps: S1, uniformly mixing tuff powder with a NaOH solution; s2, adding the corncob ash, the Portland cement and the modified tuff powder into a granulator, uniformly stirring, spraying water for granulation, and screening to obtain aggregate; and S3, freezing the obtained aggregate at-10 to-5 DEG C, and carrying out low-temperature vacuum drying to obtain the refractory aggregate. Under the synergistic effect of the tuff powder, the corncob ash and freeze drying, the refractory aggregate with the closed outer surface and the porous interior is obtained, and the heat resistance and the crack resistance at the high temperature of the concrete are improved by cooperatively using the heat-shrinkable fibers.
本发明公开了一种耐热低碳混凝土及其制备方法，属于混凝土技术领域。所述混凝土包括以下重量份数的各组分：水泥300～350份、复合掺合料110～150份、耐火骨料1000～1400份、花岗岩石粉砂650～850份、热收缩性玄武岩纤维50～60份、减水剂3.5～8.0份、水142～165份；耐火骨料的制备方法包括以下步骤：S1.将凝灰岩粉与NaOH溶液混合均匀；S2.将玉米芯灰、硅酸盐水泥和改性凝灰岩粉加入造粒机中，搅拌均匀后，喷水进行造粒，经筛分后得到骨料；S3.将所得到的骨料置于‑10～‑5℃下进行冷冻，经低温真空干燥后，即得到耐火骨料。本发明在凝灰岩粉、玉米芯灰和冷冻干燥的协同作用下，得到了一种外表面封闭内部多孔的耐火骨料，配合使用热收缩性纤维，提升混凝土的耐热性能和高温下的抗裂性能。
Heat-resistant low-carbon concrete and preparation method thereof
The invention discloses heat-resistant low-carbon concrete and a preparation method thereof, and belongs to the technical field of concrete. The concrete is prepared from the following components in parts by weight: 300 to 350 parts of cement, 110 to 150 parts of composite admixture, 1000 to 1400 parts of refractory aggregate, 650 to 850 parts of granite stone silt, 50 to 60 parts of heat-shrinkable basalt fiber, 3.5 to 8.0 parts of water reducing agent and 142 to 165 parts of water, the preparation method of the refractory aggregate comprises the following steps: S1, uniformly mixing tuff powder with a NaOH solution; s2, adding the corncob ash, the Portland cement and the modified tuff powder into a granulator, uniformly stirring, spraying water for granulation, and screening to obtain aggregate; and S3, freezing the obtained aggregate at-10 to-5 DEG C, and carrying out low-temperature vacuum drying to obtain the refractory aggregate. Under the synergistic effect of the tuff powder, the corncob ash and freeze drying, the refractory aggregate with the closed outer surface and the porous interior is obtained, and the heat resistance and the crack resistance at the high temperature of the concrete are improved by cooperatively using the heat-shrinkable fibers.
本发明公开了一种耐热低碳混凝土及其制备方法，属于混凝土技术领域。所述混凝土包括以下重量份数的各组分：水泥300～350份、复合掺合料110～150份、耐火骨料1000～1400份、花岗岩石粉砂650～850份、热收缩性玄武岩纤维50～60份、减水剂3.5～8.0份、水142～165份；耐火骨料的制备方法包括以下步骤：S1.将凝灰岩粉与NaOH溶液混合均匀；S2.将玉米芯灰、硅酸盐水泥和改性凝灰岩粉加入造粒机中，搅拌均匀后，喷水进行造粒，经筛分后得到骨料；S3.将所得到的骨料置于‑10～‑5℃下进行冷冻，经低温真空干燥后，即得到耐火骨料。本发明在凝灰岩粉、玉米芯灰和冷冻干燥的协同作用下，得到了一种外表面封闭内部多孔的耐火骨料，配合使用热收缩性纤维，提升混凝土的耐热性能和高温下的抗裂性能。
Heat-resistant low-carbon concrete and preparation method thereof
一种耐热低碳混凝土及其制备方法
DING CHAO (Autor:in) / XUE LIHUA (Autor:in) / CHEN YONGJIU (Autor:in) / GU RUI (Autor:in) / WAN RUI (Autor:in) / LIU KAI (Autor:in) / FEI ZHUANG (Autor:in) / YUAN MINGHUA (Autor:in) / CHEN JIAN (Autor:in) / SHE YUANXING (Autor:in)
09.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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