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Title:
RATIO DESIGN METHOD FOR INCREASING ANTI-STRETCHING STRENGTH OF PAVEMENT CEMENT CONCRETE
Document Type and Number:
WIPO Patent Application WO/2016/078522
Kind Code:
A1
Abstract:
A ratio design method for increasing anti-stretching strength of pavement cement concrete comprises the following steps: choosing crushed stones of 7.5 mm to 37.5 mm to perform trial preparation, determining a graduation by using a maximum volume-by-weight method, obtaining a minimum tap porosity through measurement, and determining a coarse aggregate material graduation proportion; deciding unit cement usage and a water-cement ratio according to design strength; determining volumes of gap filling mortar and working mortar according to the tap porosity; and determining a primary ratio of cement concrete, and obtaining a design ratio according to the primary ratio in combination with a trial mixing experiment and a strength experiment. The ratio design method is applicable to design of a heavy-load road surface, which saves cement and increases road-surface strength.

Inventors:
JIANG, Xinming (No.18-X664, Yinchun Street Maigaoqiao Hi-tech Park, Qixia Distric, Nanjing Jiangsu 0, 210000, CN)
Application Number:
CN2015/094283
Publication Date:
May 26, 2016
Filing Date:
November 11, 2015
Export Citation:
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Assignee:
NANJING MINGCHENGBEI ROAD AND BRIDGE CO., LTD. (No.18-X664, Yinchun Street Maigaoqiao Hi-tech Park, Qixia Distric, Nanjing Jiangsu 0, 210000, CN)
International Classes:
E01C7/14; C04B28/00
Foreign References:
CN103526664A2014-01-22
US20130108364A12013-05-02
JP2009191509A2009-08-27
Attorney, Agent or Firm:
NANJING SUGAO PATENT AND TRADEMARK FIRM(ORDINARY PARTNERSHIP) (Room 1912, Longtaiguoji Mansion No.198, East Zhongshan Street, Baixia Distric, Nanjing Jiangsu 5, 210005, CN)
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