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Modified limestone powder mineral admixture for replacing fly ash and preparation method of modified limestone powder mineral admixture
The invention provides a modified limestone powder mineral admixture replacing fly ash and a preparation method thereof, and the method comprises the following steps: 1, dissolving a C-S-H gel crystal nucleus early strength agent in deionized water to form a solution, pouring the solution into zeolite powder, and uniformly stirring to obtain zeolite powder slurry; and 2, carrying out ball milling on the zeolite powder slurry, limestone powder, industrial abandoned silica fume, DEIPA and superfine mineral powder, and then dispersing and sieving at the temperature of 70-90 DEG C to obtain the modified limestone powder mineral admixture. The industrial abandoned silica fume is added, negative charges carried by the industrial abandoned silica fume are combined with positive charges carried by the limestone powder in the high-temperature powder preparation process, the activity of the limestone powder is further improved, the strength of the prepared concrete is further improved, the industrial solid waste effect is achieved, the superfine mineral powder is doped, the accumulation rate and compactness of the powder are effectively improved, and the concrete has the good comprehensive performance. The superposing of the volcanic ash effect, the micro-filling effect and the water reducing effect of the superfine mineral powder has high activity, and the strength development of the concrete can be improved.
本发明提供了一种替代粉煤灰的改性石灰石粉矿物掺合料及其制备方法，本发明的方法包括以下步骤：1、将C‑S‑H凝胶晶核早强剂溶解于去离子水中形成溶液，倒入沸石粉中，搅拌均匀得到沸石粉浆体；2、将沸石粉浆体与石灰石粉、工业弃用硅灰、DEIPA以及超细矿粉进行球磨后在70～90℃的温度下分散过筛得到改性石灰石粉矿物掺合料。本发明加入工业弃用硅灰，通过在高温粉末过程中自身所带负电荷与石灰石粉所带的正电荷结合，进一步提高石灰石粉活性，进而提高配制混凝土的强度，并有工业固废作用，掺入超细矿粉，有效地提高粉体的堆积率和密实性，超细矿粉的火山灰效应、微填充效应和减水效应的叠加具有高活性，可以改善混凝土强度发展。
Modified limestone powder mineral admixture for replacing fly ash and preparation method of modified limestone powder mineral admixture
The invention provides a modified limestone powder mineral admixture replacing fly ash and a preparation method thereof, and the method comprises the following steps: 1, dissolving a C-S-H gel crystal nucleus early strength agent in deionized water to form a solution, pouring the solution into zeolite powder, and uniformly stirring to obtain zeolite powder slurry; and 2, carrying out ball milling on the zeolite powder slurry, limestone powder, industrial abandoned silica fume, DEIPA and superfine mineral powder, and then dispersing and sieving at the temperature of 70-90 DEG C to obtain the modified limestone powder mineral admixture. The industrial abandoned silica fume is added, negative charges carried by the industrial abandoned silica fume are combined with positive charges carried by the limestone powder in the high-temperature powder preparation process, the activity of the limestone powder is further improved, the strength of the prepared concrete is further improved, the industrial solid waste effect is achieved, the superfine mineral powder is doped, the accumulation rate and compactness of the powder are effectively improved, and the concrete has the good comprehensive performance. The superposing of the volcanic ash effect, the micro-filling effect and the water reducing effect of the superfine mineral powder has high activity, and the strength development of the concrete can be improved.
本发明提供了一种替代粉煤灰的改性石灰石粉矿物掺合料及其制备方法，本发明的方法包括以下步骤：1、将C‑S‑H凝胶晶核早强剂溶解于去离子水中形成溶液，倒入沸石粉中，搅拌均匀得到沸石粉浆体；2、将沸石粉浆体与石灰石粉、工业弃用硅灰、DEIPA以及超细矿粉进行球磨后在70～90℃的温度下分散过筛得到改性石灰石粉矿物掺合料。本发明加入工业弃用硅灰，通过在高温粉末过程中自身所带负电荷与石灰石粉所带的正电荷结合，进一步提高石灰石粉活性，进而提高配制混凝土的强度，并有工业固废作用，掺入超细矿粉，有效地提高粉体的堆积率和密实性，超细矿粉的火山灰效应、微填充效应和减水效应的叠加具有高活性，可以改善混凝土强度发展。
Modified limestone powder mineral admixture for replacing fly ash and preparation method of modified limestone powder mineral admixture
一种替代粉煤灰的改性石灰石粉矿物掺合料及其制备方法
ZHOU YONGJUN (author) / CHENG SHUXIANG (author) / LONG TANPING (author) / WAN TUAN (author) / YANG FENGCHENG (author) / HUI WEIHUA (author) / LIU JUN (author) / SHI HUIMIN (author) / HU YAOBO (author) / LI YANG (author)
2024-01-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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