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作者:

Yang, Sanqiang (Yang, Sanqiang.) | Guo, Meng (Guo, Meng.) (学者:郭猛) | Duan, Shichao (Duan, Shichao.) | Liu, Na (Liu, Na.) | Wu, Haonan (Wu, Haonan.) | Du, Erxia (Du, Erxia.) | Liang, Meichen (Liang, Meichen.)

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摘要:

With the implementation of the Xiongan New Area and the urbanization construction plan surrounding the Beijing-Tianjin satellite, it is urgent to study and apply the sponge-permeable paving materials to solve the urban waterlogging and heat island effect. In this paper, the hydration microscopic characteristics of cementitious materials are analyzed by means of the differential scanning calorimetry (DSC) test. The test of water-cement ratio, porosity, and gradation structure on the strength and permeability coefficient is emphasized, and the strength change rule of porous permeable concrete is obtained. The research results are shown as follows: (1) The DSC test shows that the effect of temperature on the hydration process of cement is obvious. With the increase of temperature, the two exothermic peaks of cement hydration increase significantly and tend to overlap and the exothermic process is shortened. At 85 degrees C, only one exothermic peak appeared, indicating that C3S hydration and ettringite formation process were completed at the same time in a relatively short time. (2) The optimal water-binder ratio of pervious concrete ranges from 0.24 to 0.30, and the optimal porosity ranges should be controlled within the range of 15%-25%. Moreover, the open gradation of pervious concrete mix ratio design is selected, and the cement content should be within the range of 20%-25%. (3) The mathematical model of permeability coefficient and porosity ratio of permeable concrete is established: k=-0.0003n2+0.0057n-0.0044; the mathematical model of permeability coefficient and compressive strength of open-graded pervious concrete: k=0.99006-0.05389c+8.02x10-4c2. The research results can provide theoretical support and technical guidance for the design and construction of permeable materials of sponge cities in Xiongan New Area and surrounding ring new area, which are of great engineering value.

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作者机构:

  • [ 1 ] [Yang, Sanqiang]Hebei Univ, Hebei Prov Civil Engn Monitoring & Evaluat Techno, Coll Civil Engn & Architecture, Baoding 071002, Hebei, Peoples R China
  • [ 2 ] [Duan, Shichao]Hebei Univ, Hebei Prov Civil Engn Monitoring & Evaluat Techno, Coll Civil Engn & Architecture, Baoding 071002, Hebei, Peoples R China
  • [ 3 ] [Liu, Na]Hebei Univ, Hebei Prov Civil Engn Monitoring & Evaluat Techno, Coll Civil Engn & Architecture, Baoding 071002, Hebei, Peoples R China
  • [ 4 ] [Du, Erxia]Hebei Univ, Hebei Prov Civil Engn Monitoring & Evaluat Techno, Coll Civil Engn & Architecture, Baoding 071002, Hebei, Peoples R China
  • [ 5 ] [Yang, Sanqiang]Hebei Inst Transportat Planning & Design, Shijiazhuang 050011, Hebei, Peoples R China
  • [ 6 ] [Guo, Meng]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 7 ] [Liang, Meichen]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 8 ] [Wu, Haonan]Hebei Construct Grp Ltd Share Ltd, Baoding 071002, Hebei, Peoples R China

通讯作者信息:

  • 郭猛

    [Guo, Meng]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

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来源 :

ADVANCES IN MATERIALS SCIENCE AND ENGINEERING

ISSN: 1687-8434

年份: 2019

卷: 2019

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:211

JCR分区:4

被引次数:

WoS核心集被引频次: 1

SCOPUS被引频次: 2

ESI高被引论文在榜: 0 展开所有

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