LABORATORY EVALUATION OF CEMENT-BASED GROUTS AND GROUTED ROCK ANCHORS
LABORATORY EVALUATION OF CEMENT-BASED GROUTS AND GROUTED ROCK ANCHORS
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DOI：
10.1016/0148-9062(95)00021-8
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发表时间：
1995-10-01
期刊：
影响因子：
--
通讯作者：
MITRI, HS
中科院分区：
文献类型：
--
作者：
BENMOKRANE, B;CHENNOUF, A;MITRI, HS
本文报告了对六种不同类型的水泥基灌浆和两种类型的钢岩锚进行实验室研究的结果。采用硅灰、铝粉、高效减水剂或砂配制的水泥浆液与常规水泥浆液的物理力学特性进行了比较。在相同的条件下，对注浆、7股钢索和实心钢螺纹棒进行了不同注浆和埋置长度的拉拔试验。在此基础上，推导出了给定埋深条件下锚杆抗拔阻力的经验公式，提出并讨论了锚杆-浆液界面剪切粘结应力-滑移关系的简单三线性本构模型。
The paper reports the findings of a laboratory study on six different types of cement-based grouts and two types of steel rock anchors. The physical and mechanical characteristics of cement grouts employing silica fume, aluminium powder, superplasticizer or sand ave compared with those of conventional cement grouts. Pullout tests of grouted, 7-strand steel cable and solid steel threadbar were conducted under similar conditions for different grouts and embedment lengths. From the results obtained, an empirical equation is derived for the estimation of anchor pullout resistance for a given embedment length, A simple trilinear constitutive model for shear bond stress-slip relation at the anchor-grout interface is proposed and discussed.