Concrete buildings brought to the emergence of a new economy, handsome form of engineering structures, the Civil engineering Construction of a new technology and engineering structural design theory.
混凝土的出现给建筑物带来了新的经济、美观的工程结构形式，使土木工程产生了新的施工技术和工程结构设计理论。
In order to enhance modulus, the design of materials, structural combination and construction technology of the graded broken stone base were studied.
为了提高路面结构中级配碎石基层的回弹模量，通过材料设计、路面结构组合设计和施工工艺设计，对级配碎石基层的使用性能进行了研究。
As the materials, construction technology, construction of environmental factors, concrete which is a body of cementitious composites easily lead to structural cracks.
混凝土作为一种胶凝体的复合材料，由于材料、施工技术、施工环境等因素容易出现结构裂缝。
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