| 英文摘要 |
This paper mainly constructs the aggregate particle density function, weight function, particle functions, the surface area function, integral find the total surface area, pulp division get the approaching of lubricating paste thickness (LPT)on the surface area of aggregates to evaluate traditional and DMDA concrete properties. The results showed that calculated and designed thickness within 3% of the difference; concrete thickness regardless of parcels, add the proper amount of SP could reach 15~20 cm of slump; w / cm = 0.24~0.40, any kind of concrete, low water-cementitious ratio or thicker thickness had the higher compressive strength; w / cm = 0.32, traditional concrete (SF) greater thickness (48.3μm) strength was still higher, but DMDA concrete, before seven days, great LPT(39.0μm)had higher strength, at 91days, lower LPT(10μm), as effect of aggregate dense packing and pozzolanic reaction, could enhance the strength, and the long-term development of two mixs showed opposite trends. |
