高性能岩锚灌浆材料配制技术及养护环境研究

Research on the High-performance Grouts of Rock Anchor and Its Curing Environments

通过对DSP高性能岩锚灌浆材料进行配合比及养护环境对其性能影响的试验.研究了水胶比和纳米硅掺量对DSP材料抗压强度及流动度的影响,同时探讨了地下自然环境养护,标准养护和(80±2)℃热水养护等不同养护环境对其力学性能的影响.获得了一组具有良好施工性能、在(80±2)℃热水养护条件下48h抗压强度127MPa,标准养护7d,28d抗压强度分别为99MPa和120MPa,地下自然环境养护7d,28d抗压强度分别为81MPa和109MPa的高性能岩锚灌浆材料配比.

Based on the study of the mix proportion of DSP（Densified Containing homogeneously arranged ultrafine Particles）for the sake of rock anchor grouting,the effects of water-binder ratio,volume of nanometer silica and different curing methods on the mechanical behaviors of the grouts have been investigated.A serial of appropriate proportion of DSP grout with good working performance were successfully found.The 48 h compressive strength in （80±2） ℃ hot water curing reached 127 MPa,the 7 d and 28 d compressive strength in standard curing reached 99 MPa and 120 MPa respectively,and the 7 d and 28 d compressive strength in underground natural cave curing reached 81 MPa and 109 MPa respectively.