为了研究灌人式保水性路用水泥砂浆的组成和性能,选用了硅藻土、粉煤灰、矿粉、水泥、硅砂、蛭石粉等6种原料,设计了19组配比；分别研究了不同水胶比、不同硅砂掺量、不同蛭石粉取代量对灌入式保水路用水泥砂浆各项性能的影响.结果表明:在合理的工作性能下,降低水胶比、外掺硅砂、蛭石粉取代硅藻土,均能提高砂浆的力学性能,硅砂的最佳掺量为水泥的15％,蛭石粉掺量为硅藻土的30％.采用这六种材料按照合理的配比,均能配置出强度高、保水性良好的灌人式保水砂浆,可广泛用于城市保水性降温路面.%In order to do research on composition and performance of cement mortar for poured water retention pavement, we designed 19 different mix ratios by choosing diatomite, fly ash, mineral powder , cement, silica sand, vermiculite powder. Besides, the influence of water binder ratio, silica sand content, vermiculite powder substitution amount on performance of cement mortar. The results showed; keeping normal performance, mechanical properties of cement mortar can be developed by decreasing the water binder ratio, mixing with the silica sand (optimum is 15% of cement) , replacing diatomite with vermiculite powder (optimum is 30% of diatomite). With rational mix ratio, cement mortar with good water retention and high strength can be widely used in water retention and cooling pavement in urban.
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