Experimental analysis on durability of pervious concrete under complex attack environments
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    Abstract:

    In order to adapt to the requirement of sponge city construction for high durable pervious concrete, pervious concrete mixed with low-quality active mineral admixture and pervious concrete mixed with Polypropylene Thick Fiber(PPTF) are developed. In the early stage, basic performance studies have been carried out, and on this basis, it is continued to conduct durability studies under complex attack environments. By the method of full-immersion, experiments last for 300 d. Macro-observations involve the deterioration regularity of both compressive strength and flexural strength with attack time. Micro-observations involve microstructure of cemented layer by SEM and chemical composition of cemented layer by EDS. Under complex attack environments, the change of pervious concrete micro-structural is in accord with macro-mechanical behavior. Combined basic performance with durability, pervious concrete mixed with both low-quality silica fume and low-quality fly ash and pervious concrete mixed with zigzag PPTF of 3 kg/m3 are preferred recommended. This two kinds of pervious concrete meet the application requirement of light traffic pavements such as existing residential area road, sidewalk, city square, stadium, outdoor parking lot, landscape road, which durability is good.

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杨波,高润东,许清风.复杂侵蚀环境下透水混凝土耐久性能试验研究[J].土木与环境工程学报(中英文),2018,40(3):53~60

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History
  • Received:June 05,2017
  • Revised:
  • Adopted:
  • Online: April 26,2018
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