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A platform for research: civil engineering, architecture and urbanism
High-powder-content machine-made sand concrete as well as preparation method and application thereof
The invention belongs to the technical field of building materials, and particularly discloses high-powder-content machine-made sand concrete as well as a preparation method and application thereof. The preparation method of the high-powder-content machine-made sand concrete comprises the following steps: screening high-powder-content machine-made sand; the stone powder, welan gum and emulsion are stirred and mixed to obtain stone powder slurry; adding machine-made sand particles and a cross-linking agent, stirring and mixing, heating to 70-100 DEG C, and maintaining the temperature for 3-5 hours to obtain prefabricated machine-made sand; and stirring and mixing the cement, the fly ash, the prefabricated machine-made sand, the gravel, the water reducing agent, the water and the defoaming agent to obtain the high-powder-content machine-made sand concrete. The invention further provides the high-powder-content machine-made sand concrete and application thereof. According to the scheme, the high-powder-content machine-made sand is pretreated, on one hand, edges and corners on the surface of the machine-made sand can be eliminated, on the other hand, the stone powder is solidified on the surface of the machine-made sand, the situation that the stone powder is dissolved to affect the effect of a water reducing agent is prevented, and meanwhile the prepared concrete has good flowing performance and mechanical performance.
本发明属于建筑材料技术领域，具体公开了一种高含粉机制砂混凝土及其制备方法和应用。本发明的高含粉机制砂混凝土的制备方法，步骤包括：筛分高含粉机制砂；将石粉与威兰胶、乳液搅拌混合得到石粉浆体；加入机制砂颗粒、交联剂，搅拌混合，加热至温度70～100℃，保持温度养护3～5h，得到预制机制砂；将水泥、粉煤灰、预制机制砂、碎石、减水剂、水、消泡剂搅拌混合，即得高含粉机制砂混凝土。本发明还提供一种高含粉机制砂混凝土及其应用。本发明的方案对高含粉机制砂进行预处理，一方面可以消除机制砂表面的棱角，另一方面将石粉固化在机制砂表面，防止石粉溶解影响减水剂的效果，同时制得的混凝土具有较好的流动性能与力学性能。
High-powder-content machine-made sand concrete as well as preparation method and application thereof
The invention belongs to the technical field of building materials, and particularly discloses high-powder-content machine-made sand concrete as well as a preparation method and application thereof. The preparation method of the high-powder-content machine-made sand concrete comprises the following steps: screening high-powder-content machine-made sand; the stone powder, welan gum and emulsion are stirred and mixed to obtain stone powder slurry; adding machine-made sand particles and a cross-linking agent, stirring and mixing, heating to 70-100 DEG C, and maintaining the temperature for 3-5 hours to obtain prefabricated machine-made sand; and stirring and mixing the cement, the fly ash, the prefabricated machine-made sand, the gravel, the water reducing agent, the water and the defoaming agent to obtain the high-powder-content machine-made sand concrete. The invention further provides the high-powder-content machine-made sand concrete and application thereof. According to the scheme, the high-powder-content machine-made sand is pretreated, on one hand, edges and corners on the surface of the machine-made sand can be eliminated, on the other hand, the stone powder is solidified on the surface of the machine-made sand, the situation that the stone powder is dissolved to affect the effect of a water reducing agent is prevented, and meanwhile the prepared concrete has good flowing performance and mechanical performance.
本发明属于建筑材料技术领域，具体公开了一种高含粉机制砂混凝土及其制备方法和应用。本发明的高含粉机制砂混凝土的制备方法，步骤包括：筛分高含粉机制砂；将石粉与威兰胶、乳液搅拌混合得到石粉浆体；加入机制砂颗粒、交联剂，搅拌混合，加热至温度70～100℃，保持温度养护3～5h，得到预制机制砂；将水泥、粉煤灰、预制机制砂、碎石、减水剂、水、消泡剂搅拌混合，即得高含粉机制砂混凝土。本发明还提供一种高含粉机制砂混凝土及其应用。本发明的方案对高含粉机制砂进行预处理，一方面可以消除机制砂表面的棱角，另一方面将石粉固化在机制砂表面，防止石粉溶解影响减水剂的效果，同时制得的混凝土具有较好的流动性能与力学性能。
High-powder-content machine-made sand concrete as well as preparation method and application thereof
一种高含粉机制砂混凝土及其制备方法和应用
LIU YANG (author) / WANG JUN (author) / JIANG ZHEN (author) / LIU BIN (author) / HE YANQI (author) / LI MENGQIANG (author) / DA JUNWEI (author)
2024-04-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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