混凝土 土木工程材料_PPT课件土木工程材料
第5章
主讲: 徐清
混凝土
Neville . (UK) wrote in “Properties of Concrete”
Concrete and steel are the monly used structural materials. They plement one another, and pete with one another so that structures of a similar type and function can be built in either of the materials . And yet, the engineer often knows less about the concrete of which the structure is made than about the steel.
……
These facts must be borne in mind by the designer, as careful and intricate design can be easily vitiated if the properties of the actual concrete differ from those assumed in the design calculations. Structural design is only as good as the materials used.
From the above it must not be concluded that making good concrete is difficult.
……
‘Bad’ concrete – often a substance of unsuitable consistency, hardening into a bed, non-homogeneous mass – is made simply by mixing cement, aggregate and water.
Surprisingly, the ingredients of a good concrete are exactly the same, and it is only the ‘know-how’, backed up by understanding, that is responsible for the difference.
What, then, is good
concrete?
混凝土的分类
普通混凝土的基本组成材料
普通混凝土的主要技术性质
混凝土的外加材料
普通混凝土配合比设计
普通混凝土的质量控制
其它品种混凝土
混凝土
泵送混凝土
喷射混凝土
真空脱水混凝土
碾压混凝土
压力灌浆混凝土
太阳能养护混凝土
按施工工艺
防水混凝土
耐热混凝土
耐酸混凝土
纤维混凝土
聚合物混凝土
按功能或材料
混凝土
混凝土作为一种建筑材料
优点
.
4. 与钢筋有牢固的粘结力
。
缺点
,属于一种脆性材料。
。
,从而延长了施工期。
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