公开(公告)号：US11733153B1

公开(公告)日：2023-08-22

申请号：US18175150

申请日：2023-02-27

申请人： RESEARCH INSTITUTE OF HIGHWAY MINISTRY OF TRANSPORT

发明人： Xuefeng Li ,  Hualao Wang

IPC分类号： G01N17/00 ,  G01N33/38 ,  G01N33/18

CPC分类号： G01N17/00 ,  G01N33/1846 ,  G01N33/383

摘要： Disclosed is a method for evaluating environmental erosion of thaumasite in tunnel concrete, including: acquiring natural corrosion action parameters and environmental influence action parameters, and evaluating a natural corrosion situation based on the natural corrosion action parameters to obtain an initial evaluation result; and modifying the initial evaluation result based on the environmental influence action parameters to obtain a target evaluation result.

公开(公告)号：US11746063B2

公开(公告)日：2023-09-05

申请号：US17952798

申请日：2022-09-26

申请人： Research Institute of Highway Ministry of Transport

发明人： Chongbang Xu ,  Xuefeng Li ,  Hualao Wang ,  Xiaojing Gao

IPC分类号： C04B40/00 ,  C04B14/14 ,  C04B14/28 ,  C04B18/08 ,  C04B22/14 ,  C04B24/26 ,  C04B28/04 ,  G01N23/20 ,  G01N33/38 ,  C04B103/30 ,  C04B111/20

CPC分类号： C04B40/0096 ,  C04B14/14 ,  C04B14/28 ,  C04B18/08 ,  C04B22/142 ,  C04B24/2641 ,  C04B28/04 ,  G01N23/20 ,  G01N33/383 ,  C04B2103/302 ,  C04B2111/2015 ,  G01N2223/056 ,  G01N2223/60

摘要： Disclosed is a sulfate corrosion-resistant concrete, a method for optimizing proportion and application thereof. The concrete is formed by mixing and stirring base stocks, aggregates, admixtures, external additives and water. The base stock of the concrete is 17.4-17.5 parts of Portland cement; the aggregates include 38.9 parts of basalt with aggregate size of 5-10 mm and 33.1-33.2 parts of basalt medium sand; the admixtures are 1.9-1.95 parts of silica fume or fly ash, and further including 0.23-0.24 part of polycarboxylate water reducer and 1.34-1.35 part of sulfate corrosion-resistant liquid preservative. Optimized proportion method: according to the corrosion characteristics of sulfate and corrosion environment parameters, determine the composition and proportion of basic samples and comparison samples, make and cure sample components, test the deep components of the samples, and obtain the optimal composition and proportion according to the test results.