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A platform for research: civil engineering, architecture and urbanism
Machine-made sand concrete design method capable of reducing fluidity gradual loss
The invention discloses a machine-made sand concrete design method capable of reducing fluidity gradual loss. The machine-made sand concrete design method comprises the following steps: providing a first base material, compensation water and a superabsorbent polymer of concrete; based on the 5min expansion degree of the mortar mixture prepared from the first base material and the experience water absorption capacity of the superabsorbent polymer, determining the estimated water absorption capacity of the superabsorbent polymer through a first test; based on the estimated water absorption capacity and the 1h expansion degree of a second base material for equivalently replacing the machine-made sand with natural sand, the use amount of compensation water is determined through a second test; determining the addition amount of the superabsorbent polymer in the first base material based on the use amount of the compensation water and the estimated water absorption capacity of the superabsorbent polymer; based on the adding amount of the super-absorbent polymer and the using amount of the compensation water, the preset mass ratio is adjusted to obtain the design ratio of the machine-made sand concrete. The invention solves the problem of high concrete fluidity loss due to water absorption of machine-made sand in concrete.
本发明公开了一种减少流动性经时损失的机制砂混凝土设计方法，包括提供混凝土的第一基料、补偿水、超吸水聚合物；基于第一基料配制的砂浆拌和物的5min扩展度和超吸水聚合物的经验吸水力，通过第一试验确定超吸水聚合物的预估吸水力；基于预估吸水力及采用天然砂等量替换机制砂的第二基料的1h扩展度，通过第二试验确定补偿水的用量；基于补偿水的用量和超吸水聚合物的预估吸水力，确定超吸水聚合物在第一基料中的添加量；基于超吸水聚合物的添加量及补偿水的用量，调整预设质量配比以获得机制砂混凝土的设计配比。本发明解决了混凝土中的机制砂吸水导致混凝土流动性经时损失高的问题。
Machine-made sand concrete design method capable of reducing fluidity gradual loss
The invention discloses a machine-made sand concrete design method capable of reducing fluidity gradual loss. The machine-made sand concrete design method comprises the following steps: providing a first base material, compensation water and a superabsorbent polymer of concrete; based on the 5min expansion degree of the mortar mixture prepared from the first base material and the experience water absorption capacity of the superabsorbent polymer, determining the estimated water absorption capacity of the superabsorbent polymer through a first test; based on the estimated water absorption capacity and the 1h expansion degree of a second base material for equivalently replacing the machine-made sand with natural sand, the use amount of compensation water is determined through a second test; determining the addition amount of the superabsorbent polymer in the first base material based on the use amount of the compensation water and the estimated water absorption capacity of the superabsorbent polymer; based on the adding amount of the super-absorbent polymer and the using amount of the compensation water, the preset mass ratio is adjusted to obtain the design ratio of the machine-made sand concrete. The invention solves the problem of high concrete fluidity loss due to water absorption of machine-made sand in concrete.
本发明公开了一种减少流动性经时损失的机制砂混凝土设计方法，包括提供混凝土的第一基料、补偿水、超吸水聚合物；基于第一基料配制的砂浆拌和物的5min扩展度和超吸水聚合物的经验吸水力，通过第一试验确定超吸水聚合物的预估吸水力；基于预估吸水力及采用天然砂等量替换机制砂的第二基料的1h扩展度，通过第二试验确定补偿水的用量；基于补偿水的用量和超吸水聚合物的预估吸水力，确定超吸水聚合物在第一基料中的添加量；基于超吸水聚合物的添加量及补偿水的用量，调整预设质量配比以获得机制砂混凝土的设计配比。本发明解决了混凝土中的机制砂吸水导致混凝土流动性经时损失高的问题。
Machine-made sand concrete design method capable of reducing fluidity gradual loss
减少流动性经时损失的机制砂混凝土设计方法
ZHAO SHENGYING (author) / GUI QIANG (author) / CHEN YANG (author) / PAN SHAOXUE (author) / WEI SEN (author) / GUAN XINCHUN (author) / ZHANG JIANJIAN (author)
2024-02-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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