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A platform for research: civil engineering, architecture and urbanism
Geopolymer recycled concrete mix proportion design method
The invention relates to a geopolymer recycled concrete mix proportion design method which comprises the following steps: a, determining the range of basic mortar strength fm and coarse aggregate framework contribution strength fG based on concrete target strength fcu; b, acquiring the volume content VG of the coarse aggregate and the volume content VS of the fine aggregate based on the fG by utilizing a contour line relation graph, and calculating the volume content VS, M of the fine aggregate in the basic mortar; c, calculating the thickness Hm of the mortar film based on the VG; calculating mortar rheological parameter threshold values eta m, min and tau m, max; d, based on the fm and the VS, M, the basic neat paste strength fp is calculated; obtaining the modulus M of the alkali activator, the concentration C of the alkali activator and the rheological parameters eta P and tau P of the neat paste from the contour relation graph, and finally obtaining the rheological parameters eta m and tau m of the mortar. And e, determining parameters based on the step d and the step b, calculating to obtain a concrete slump calculated value Scu, c, and verifying whether the workability of the concrete meets the requirement by combining a mortar rheological parameter threshold value. According to the invention, the geopolymer recycled concrete formula can be conveniently designed.
本发明涉及一种地聚物再生混凝土配合比设计方法，包括如下步骤：a.基于混凝土目标强度fcu，确定基础砂浆强度fm和粗骨料架构贡献强度fG的范围；b.利用等高线关系图，基于fG获取粗骨料体积含量VG与细骨料体积含量VS,计算基础砂浆中细骨料体积含量VS,M；c.基于VG，计算出砂浆膜厚度Hm；计算出砂浆流变参数阈值ηm,min和τm,max；d.基于fm和VS,M，计算出基础净浆强度fp；进而从等高线关系图中获取碱激发剂模数M、碱激发剂浓度C、净浆流变参数ηP和τP，最后得到砂浆流变参数ηm和τm；e.基于步骤d和步骤b确定参数，计算得到混凝土坍落度计算值Scu,c,并结合砂浆流变参数阈值验证混凝土工作性是否满足要求。本发明能够方便的设计出地聚物再生混凝土配方。
Geopolymer recycled concrete mix proportion design method
The invention relates to a geopolymer recycled concrete mix proportion design method which comprises the following steps: a, determining the range of basic mortar strength fm and coarse aggregate framework contribution strength fG based on concrete target strength fcu; b, acquiring the volume content VG of the coarse aggregate and the volume content VS of the fine aggregate based on the fG by utilizing a contour line relation graph, and calculating the volume content VS, M of the fine aggregate in the basic mortar; c, calculating the thickness Hm of the mortar film based on the VG; calculating mortar rheological parameter threshold values eta m, min and tau m, max; d, based on the fm and the VS, M, the basic neat paste strength fp is calculated; obtaining the modulus M of the alkali activator, the concentration C of the alkali activator and the rheological parameters eta P and tau P of the neat paste from the contour relation graph, and finally obtaining the rheological parameters eta m and tau m of the mortar. And e, determining parameters based on the step d and the step b, calculating to obtain a concrete slump calculated value Scu, c, and verifying whether the workability of the concrete meets the requirement by combining a mortar rheological parameter threshold value. According to the invention, the geopolymer recycled concrete formula can be conveniently designed.
本发明涉及一种地聚物再生混凝土配合比设计方法，包括如下步骤：a.基于混凝土目标强度fcu，确定基础砂浆强度fm和粗骨料架构贡献强度fG的范围；b.利用等高线关系图，基于fG获取粗骨料体积含量VG与细骨料体积含量VS,计算基础砂浆中细骨料体积含量VS,M；c.基于VG，计算出砂浆膜厚度Hm；计算出砂浆流变参数阈值ηm,min和τm,max；d.基于fm和VS,M，计算出基础净浆强度fp；进而从等高线关系图中获取碱激发剂模数M、碱激发剂浓度C、净浆流变参数ηP和τP，最后得到砂浆流变参数ηm和τm；e.基于步骤d和步骤b确定参数，计算得到混凝土坍落度计算值Scu,c,并结合砂浆流变参数阈值验证混凝土工作性是否满足要求。本发明能够方便的设计出地聚物再生混凝土配方。
Geopolymer recycled concrete mix proportion design method
一种地聚物再生混凝土配合比设计方法
ZHONG QINGYU (author) / DENG LANGNI (author)
2024-07-16
Patent
Electronic Resource
Chinese
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