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A platform for research: civil engineering, architecture and urbanism
Lightweight high-strength concrete and preparation method thereof
The invention discloses a preparation method of a lightweight high-strength concrete. By using aluminum silicate ceramic fibers, concrete is prevented from cracking, the expansion of macroscopic cracks is prevented, the peeling and separating capacity of the concrete for resisting freeze-thaw cycle is improved, the compressive and flexural strength of the concrete is improved by using auxiliary agents, and the concrete has the characteristic of light weight by using prepared modified fly ash; according to the preparation method, a prepared concrete semi-finished product is crushed and refinedby using a crushing and refining device; according to the crushing and refining device, a concrete semi-finished product is crushed through a slitting knife, a first shearing blade and a second shearing blade, the particle size is reduced; the semi-finished concrete is sheared and dispersed by the stirring and shearing blades, and the part with a smaller particle size is extracted by wind power generated by an air blower, so that the prepared light high-strength concrete is small in particle size, the specific surface area is reduced, the void ratio is reduced, the bonding strength is improved, and the concrete quality is improved.
本发明公开了一种轻质高强度混凝土的制备方法，通过使用硅酸铝陶瓷纤维，防止混凝土开裂，阻止宏观裂缝的扩展，提高了该混凝土抵抗冻融循环的剥落、分离能力，通过使用助剂，增加了混凝土的抗压抗折强度，通过使用制得的改性粉煤灰使得该混凝土具有轻质的特点；该制备方法中通过使用粉碎细化装置将制得的混凝土半成品进行粉碎细化，该粉碎细化装置通过分切刀、第一剪切叶和第二剪切叶将混凝土半成品进行粉碎，使其粒径减小，通过搅拌剪切叶将混凝土半成品进行剪切并分散，通过鼓风机产生风力将其中粒径较小的部分抽出，使得制得的轻质高强度混凝土粒径小，从而降低比表面积,减小空隙率,提高了联结强度，提高了混凝土的品质。
Lightweight high-strength concrete and preparation method thereof
The invention discloses a preparation method of a lightweight high-strength concrete. By using aluminum silicate ceramic fibers, concrete is prevented from cracking, the expansion of macroscopic cracks is prevented, the peeling and separating capacity of the concrete for resisting freeze-thaw cycle is improved, the compressive and flexural strength of the concrete is improved by using auxiliary agents, and the concrete has the characteristic of light weight by using prepared modified fly ash; according to the preparation method, a prepared concrete semi-finished product is crushed and refinedby using a crushing and refining device; according to the crushing and refining device, a concrete semi-finished product is crushed through a slitting knife, a first shearing blade and a second shearing blade, the particle size is reduced; the semi-finished concrete is sheared and dispersed by the stirring and shearing blades, and the part with a smaller particle size is extracted by wind power generated by an air blower, so that the prepared light high-strength concrete is small in particle size, the specific surface area is reduced, the void ratio is reduced, the bonding strength is improved, and the concrete quality is improved.
本发明公开了一种轻质高强度混凝土的制备方法，通过使用硅酸铝陶瓷纤维，防止混凝土开裂，阻止宏观裂缝的扩展，提高了该混凝土抵抗冻融循环的剥落、分离能力，通过使用助剂，增加了混凝土的抗压抗折强度，通过使用制得的改性粉煤灰使得该混凝土具有轻质的特点；该制备方法中通过使用粉碎细化装置将制得的混凝土半成品进行粉碎细化，该粉碎细化装置通过分切刀、第一剪切叶和第二剪切叶将混凝土半成品进行粉碎，使其粒径减小，通过搅拌剪切叶将混凝土半成品进行剪切并分散，通过鼓风机产生风力将其中粒径较小的部分抽出，使得制得的轻质高强度混凝土粒径小，从而降低比表面积,减小空隙率,提高了联结强度，提高了混凝土的品质。
Lightweight high-strength concrete and preparation method thereof
一种轻质高强度混凝土及其制备方法
SHENG MENGQING (author) / TANG FENG (author) / CHEN YUKAI (author)
2020-11-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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