【摘要】 为了研究装配式混凝土结构中钢筋套筒连接灌浆料的抗压强度及其影响因素,设计制作了402个灌浆料试件进行抗压强度试验,研究试件形状、尺寸和水料比(水的质量m_W与材料质量m_M之比)对其抗压强度的影响,以及不同龄期和不同强度条件下高径比为1∶1的■18圆柱体试件与标准试件抗压强度的关系.结果表明:灌浆料试件的形状对其抗压强度的影响比较明显,而尺寸的影响不显著;灌浆料试件的抗压强度随水料比的增加而逐渐降低;不同水料比下■18圆柱体试件抗压强度测试值与标准试件抗压强度测试值均基本服从正态分布.在试验基础上,建立了高径比为1∶1的■18圆柱体试件的抗压强度与标准试件抗压强度的换算公式,可为工程中钢筋套筒连接灌浆料实体强度检测提供理论依据.更多还原

【Abstract】 In order to investigate the strength and influencing factors of reinforced sleeve joint grouting materials in prefabricated concrete structures,402 grouting material test blocks were designed and prepared to test the compressive strength and observe the shape of specimen,size and water-material ratio for block compressive strength.The relationship of compressive strength between ■18 cylindrical specimen with 1∶1 of height-diameter ratio and standard specimens was established under different ages and strength conditions.The results show that the shape of grouting material test block has obvious influence on the compressive strength,while the size has no significant influence on the compressive strength of grouting material;the strength of the grouting material decreases with the increase of water-material ratio;the compressive strength of ■18 cylindrical specimen and standard specimen basically obeys the normal distribution;on the basis of experiment,the conversion formula of compressive strength of standard specimen and■ 18 cylindrical specimen is established,which can provide a theoretical basis for testing the solid strength of reinforced sleeve joint grouting material in engineering.更多还原