Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Carbonization-resistant alkali slag concrete and preparation method thereof
The invention discloses anti-carbonization alkali slag concrete and a preparation method thereof. The preparation method comprises the following steps: crushing and screening raw materials; adding the modifier into the machine-made sand, uniformly stirring, and mixing the coarse aggregate with the palygorskite soil; adding the modified machine-made sand and the recycled coarse aggregate into the gravel, the pre-wetted aggregate and the alkali slag, mixing, then adding the silica fume, the cement and the water, and mixing; and adding the microbead viscosity-reducing material, the polycarboxylic acid superplasticizer, the permeable waterproof agent, the polypropylene fiber, the acrylate functional agent, the admixture and the residual water, and stirring and mixing. According to the invention, the polypropylene fiber is added into the concrete, and the fiber is melted at high temperature (fire) to form a channel capable of enabling water vapor to escape from a boundary area, so that the air pressure is reduced, and the protective layer of the column is prevented from peeling off; a water storage device is formed in the concrete through the pre-wetting aggregate, so that the concrete is continuously wetted and cured, the autogenous shrinkage of the concrete can be greatly reduced, and micro-cracks are reduced.
本发明公开了一种抗碳化碱矿渣混凝土及其制备方法，将原料进行破碎进行筛选；将改性剂加入机制砂中搅拌均匀，将粗骨料与坡缕缟石土混合；将改性的机制砂以及再生粗骨料加入碎石、预湿骨料和碱矿渣混合，再加入硅灰、水泥和水混合；加入微珠降粘材料、聚羧酸高效减水剂、渗透性防水剂、聚丙烯纤维、丙烯酸盐功能剂、掺合料和剩余的水搅拌混合。本发明在混凝土中加入聚丙烯纤维，在高温(火灾)时，纤维熔化，形成了能使水气从边界区逸出的通道，减小了气压，从而防止柱的保护层剥落；通过预湿骨料在混凝土内部形成一个“蓄水器”，使混凝土得到持续的潮湿养护，可使混凝土的自生收缩大为降低，减少了微细裂缝。
Carbonization-resistant alkali slag concrete and preparation method thereof
The invention discloses anti-carbonization alkali slag concrete and a preparation method thereof. The preparation method comprises the following steps: crushing and screening raw materials; adding the modifier into the machine-made sand, uniformly stirring, and mixing the coarse aggregate with the palygorskite soil; adding the modified machine-made sand and the recycled coarse aggregate into the gravel, the pre-wetted aggregate and the alkali slag, mixing, then adding the silica fume, the cement and the water, and mixing; and adding the microbead viscosity-reducing material, the polycarboxylic acid superplasticizer, the permeable waterproof agent, the polypropylene fiber, the acrylate functional agent, the admixture and the residual water, and stirring and mixing. According to the invention, the polypropylene fiber is added into the concrete, and the fiber is melted at high temperature (fire) to form a channel capable of enabling water vapor to escape from a boundary area, so that the air pressure is reduced, and the protective layer of the column is prevented from peeling off; a water storage device is formed in the concrete through the pre-wetting aggregate, so that the concrete is continuously wetted and cured, the autogenous shrinkage of the concrete can be greatly reduced, and micro-cracks are reduced.
本发明公开了一种抗碳化碱矿渣混凝土及其制备方法，将原料进行破碎进行筛选；将改性剂加入机制砂中搅拌均匀，将粗骨料与坡缕缟石土混合；将改性的机制砂以及再生粗骨料加入碎石、预湿骨料和碱矿渣混合，再加入硅灰、水泥和水混合；加入微珠降粘材料、聚羧酸高效减水剂、渗透性防水剂、聚丙烯纤维、丙烯酸盐功能剂、掺合料和剩余的水搅拌混合。本发明在混凝土中加入聚丙烯纤维，在高温(火灾)时，纤维熔化，形成了能使水气从边界区逸出的通道，减小了气压，从而防止柱的保护层剥落；通过预湿骨料在混凝土内部形成一个“蓄水器”，使混凝土得到持续的潮湿养护，可使混凝土的自生收缩大为降低，减少了微细裂缝。
Carbonization-resistant alkali slag concrete and preparation method thereof
一种抗碳化碱矿渣混凝土及其制备方法
HUANG ZHOUFENG (Autor:in) / SUN YADONG (Autor:in) / HONG WENNING (Autor:in) / YE CAIFA (Autor:in) / JI YINGCHANG (Autor:in) / LUO QIANG (Autor:in) / LAN QINGDE (Autor:in) / ZHANG LIHUAN (Autor:in) / CHEN YUANWEN (Autor:in) / DING LINGFEI (Autor:in)
02.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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