低孔隙率砂浆的强度性能和孔结构

研究了细集料种类、粒径大小及分布对低孔隙率砂浆强度性能的影响。结果表明，集料本征强度和粒径大小对强度性能有显著影响、在压蒸条件下，配合出适当的石英砂浆的抗压强度具有与净浆同样的强度，其原因在于界面化学反应。界面改善使砂浆抗压强度显著提高，但对抗折强度的影响较小。

MECHANICAL PROPERTIES AND PORE STRUCTURE OF VERY LOW POROSITY MORTAR

Influences of nature Particle,size and distyibution of micro-aggregates on the mechanical properties of very low porosity mortar were investigated. Results show that the intrinsic strength and particle size of aggregstes seem to be important factors determining the compressive strength of mortars.Under autoclave condition, the compressive strength of quartz morner with proper ratio of cement to quartz is the same as that of pure cement paste,and the reason may be attributed to the chemical reaction in the inter facial zone.Enhancement of interface appears to be effective to increasing the compressive strength, but constitutes a slight influence on the fie-cural strength.