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来源：百度知道 编辑：UC知道 时间：2024/06/06 12:45:50
1. Introduction
The mechanical properties and durability of concrete are significantly
affected by the overall porosity and pore size distribution in
cement paste. To enhance the properties of concrete, some microstructural
improvement techniques need to be developed and are
employed in producing a high-strength and durable concrete. For
example, reactive powder concrete (RPC) composed of fine powders
such as silica fume, sand and crushed quartz were proposed
and characterized by Cheyrezy et al. [1–4]. The particle sizes of fine
powders used in RPC is in the range of 0.02–600 lm.
Through the techniques of elimination of coarse aggregates,
introduction of pozzolanic material and curing under pressure
and high temperature, the overall porosity and critical crack size
in cement paste are dramatically reduced. Consequently, the compressive
strength of hardened RPC can be increased up to 200–
800 MPa [5–7]. However,
The mechanical properties and durability of concrete are significantly
affected by the overall porosity and pore size distribution in
cement paste. To enhance the properties of concrete, some microstructural
improvement techniques need to be developed and are
employed in producing a high-strength and durable concrete. For
example, reactive powder concrete (RPC) composed of fine powders
such as silica fume, sand and crushed quartz were proposed
and characterized by Cheyrezy et al. [1–4]. The particle sizes of fine
powders used in RPC is in the range of 0.02–600 lm.
Through the techniques of elimination of coarse aggregates,
introduction of pozzolanic material and curing under pressure
and high temperature, the overall porosity and critical crack size
in cement paste are dramatically reduced. Consequently, the compressive
strength of hardened RPC can be increased up to 200–
800 MPa [5–7]. However,
1 。导言
受聘于生产高强度和耐久性混凝土。为了
微粉
超过100 ％ 。的独特性能的高压缩
实力和良好的加工性，高流动性的RPC作为
建筑物材料是可行的和有希望的。然而，消防
你这个怎么突然没了？