Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Large-slump continuous reinforced concrete mix proportion design optimization method
The invention discloses a large-slump continuous reinforced concrete mix proportion design optimization method. The method comprises the following steps: determining design parameter values of a continuous reinforced concrete pavement; calculating and determining the allowable shrinkage strain of the concrete; performing concrete mix proportion design trial mixing work; measuring the actual dry shrinkage strain and temperature shrinkage coefficient of the trial concrete; calculating the actual shrinkage strain of the concrete, wherein if the actual shrinkage strain is smaller than or equal to the allowable shrinkage strain, the trial preparation concrete meets the design requirement, and if the actual shrinkage strain is larger than the allowable shrinkage strain, the mix proportion of the trial preparation concrete is optimized until the actual shrinkage strain of the optimized trial preparation concrete is smaller than or equal to the allowable shrinkage strain, and the trial concrete meets the design requirements. According to the invention, the shrinkage strain of the prepared concrete can be controlled within an allowable range, the quality of the concrete is ensured, and early cracking of the continuous reinforced concrete with large slump is avoided or reduced; the method is easy to operate and high in applicability, and can be popularized and applied to urban road pavements.
本发明公开了一种大坍落度连续配筋混凝土配合比设计优化方法，包括以下步骤：确定连续配筋混凝土路面设计参数取值；计算确定混凝土容许收缩应变；进行混凝土配合比设计试配工作；测量试配混凝土实际干缩应变和温缩系数；计算混凝土实际收缩应变，若实际收缩应变小于等于容许收缩应变，则试配混凝土满足设计要求，若实际收缩应变大于容许收缩应变，则对试配混凝土的配合比进行优化，直至优化后试配混凝土的实际收缩应变小于等于容许收缩应变，试配混凝土满足设计要求。本发明能将配制混凝土的收缩应变控制在容许范围内，保证混凝土质量，避免或减小大坍落度连续配筋混凝土的早期开裂；本发明操作简单、适用性较强，可在城镇道路路面中推广应用。
Large-slump continuous reinforced concrete mix proportion design optimization method
The invention discloses a large-slump continuous reinforced concrete mix proportion design optimization method. The method comprises the following steps: determining design parameter values of a continuous reinforced concrete pavement; calculating and determining the allowable shrinkage strain of the concrete; performing concrete mix proportion design trial mixing work; measuring the actual dry shrinkage strain and temperature shrinkage coefficient of the trial concrete; calculating the actual shrinkage strain of the concrete, wherein if the actual shrinkage strain is smaller than or equal to the allowable shrinkage strain, the trial preparation concrete meets the design requirement, and if the actual shrinkage strain is larger than the allowable shrinkage strain, the mix proportion of the trial preparation concrete is optimized until the actual shrinkage strain of the optimized trial preparation concrete is smaller than or equal to the allowable shrinkage strain, and the trial concrete meets the design requirements. According to the invention, the shrinkage strain of the prepared concrete can be controlled within an allowable range, the quality of the concrete is ensured, and early cracking of the continuous reinforced concrete with large slump is avoided or reduced; the method is easy to operate and high in applicability, and can be popularized and applied to urban road pavements.
本发明公开了一种大坍落度连续配筋混凝土配合比设计优化方法，包括以下步骤：确定连续配筋混凝土路面设计参数取值；计算确定混凝土容许收缩应变；进行混凝土配合比设计试配工作；测量试配混凝土实际干缩应变和温缩系数；计算混凝土实际收缩应变，若实际收缩应变小于等于容许收缩应变，则试配混凝土满足设计要求，若实际收缩应变大于容许收缩应变，则对试配混凝土的配合比进行优化，直至优化后试配混凝土的实际收缩应变小于等于容许收缩应变，试配混凝土满足设计要求。本发明能将配制混凝土的收缩应变控制在容许范围内，保证混凝土质量，避免或减小大坍落度连续配筋混凝土的早期开裂；本发明操作简单、适用性较强，可在城镇道路路面中推广应用。
Large-slump continuous reinforced concrete mix proportion design optimization method
大坍落度连续配筋混凝土配合比设计优化方法
CHENG XIAOLIANG (Autor:in) / ZHAO ZHENJUN (Autor:in) / WANG YANG (Autor:in) / ZHAO QIANWEN (Autor:in) / CHEN GANG (Autor:in) / LI ZIQI (Autor:in) / TANG ZHEN (Autor:in) / WANG ZHAOYU (Autor:in) / ZHAO YU (Autor:in)
03.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
G16C
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