Home
About Us
Editorial
Instruction
Subscribe
Advertising
Message
Contact Us
中文
Office Online
Journal Online
Current Issue
Archive
Advanced Search
Read Articles
Download Articles
RSS
Email Alert
2023 Vol. 0, No. 11
Published: 2023-10-30
1
Influence of mineral composition of cement clinker on carbonization resistance of concrete
Hot!
OUYANG Kelian, et al.
The experiment used four kinds of P·Ⅱ42.5R cement that with different clinker mineral composition to prepared three concrete systems, which used fly ash of class Ⅱ and limestone powder as gelled material: an unmixed system A, a mixed fly ash system B and a mixed limestone powder system C. The curing conditions of A are (20±2) ℃ and RH above 95% and the curing conditions of B and C are (15±1) ℃ and RH (60%±5%). After the curing (28 d), the accelerated carbonation test was carried out. The results showed that under the standard curing conditions of (20±2) ℃ and RH above 95%, the concrete prepared by the cement with a high C2S content has a better anti-carbonation performance. Under non-standard curing conditions of (15±1) ℃ and RH (60%±5%), the concrete prepared by the cement with a high C3S content has a better anti-carbonation performance. A well curing condition is important to improve the anti-carbonation performance of concrete
2023 Vol. 0 (11): 1- [
Abstract
] (
132
)
HTML
(1 KB)
下载 PDF
(1364 KB) (
0
)
6
Study on application of ultrafine composite admixtures in cement and concrete of different strength grades
WANG Mingquan, et al
The ultrafine composite admixture used in this study is composed of 50% S95 mineral powder and 50% fly ash, which is obtained by mixing and grinding with ultrafine ball mill. The application mode of ultrafine composite admixture in cement, concrete of different strength grades and ultra-high performance concrete was explored, and its influence on the properties of cement and concrete was studied. The results showed that the superfine composite admixture can replace 10%~20% of P·O 42.5 cement, the 3 d strength of cement does not decrease, the 28 d flexural strength and compressive strength increase by more than 0.5 MPa and 10 MPa respectively, and other properties can meet the standard requirements. In the C30, C50 and C80 strength grade concrete, the ultrafine composite admixture completely replacing the mineral powder can improve the fluidity and compressive strength of concrete, and the durability of C30 strength grade concrete is obviously improved. When the ultra-fine composite admixture replaces 20%~50% cement in ultra-high performance concrete, the fluidity and 28 d compressive strength of ultra-high performance concrete increase first and then decrease, and the replacement amount of 40% is the best.
2023 Vol. 0 (11): 6- [
Abstract
] (
103
)
HTML
(1 KB)
下载 PDF
(4411 KB) (
3
)
11
Industrial trial production of gradient clinker prepared by steel slag fusion sintering method
LI Zhengwang, et al.
Steel slag fusion calcined gradient clinker technology can directly utilize granular steel slag to produce cement clinker, which is an important way to realize large-scale utilization of steel slag in cement industry. In this paper, the industrial trial production played a demonstration role for the future popularization and application of this technology. The results showed that the mineral phase distribution in clinker was gradient from inside to outside. When the steel slag content was 5% of the clinker, high quality steel slag gradient clinker could be produced, but when the steel slag content increased to 7.5%, the early strength of the clinker began to decrease, but the late strength increased rapidly. The technical problem that the water-soluble chromium (Ⅵ) content in clinker produced by steel slag exceeds the standard has been solved, and the industrial and stable production can be realized by further improving the batching and technology.
2023 Vol. 0 (11): 11- [
Abstract
] (
69
)
HTML
(1 KB)
下载 PDF
(3443 KB) (
3
)
16
Study on influence of cement grinding methods on cement properties
Hot!
YAN Yunhua, et al.
This experiment selected cement produced by three commonly used grinding methods in industrial production to detect specific surface area, cement slurry flow, cement hydration heat, concrete performance, concrete compressive strength and cement particle gradation. The results showed that semi-final grinding is the optimal grinding method, and the effects of specific surface area and 45 μm fineness control index in production are basically the same. Combined with power consumption and other indicators, it is recommended to use semi-final grinding method for grinding, the specific surface area control to (370±10) m2/kg. Meanwhile the cement performance is optimized.
2023 Vol. 0 (11): 16- [
Abstract
] (
128
)
HTML
(1 KB)
下载 PDF
(1334 KB) (
1
)
20
Research on carbon source analysis and carbon emission accounting of cement industry
SHI Jiale, et al.
2023 Vol. 0 (11): 20- [
Abstract
] (
92
)
HTML
(1 KB)
下载 PDF
(2111 KB) (
0
)
24
Construction and effect of digital mine of Shuangfeng Conch
LUO An, et al.
2023 Vol. 0 (11): 24- [
Abstract
] (
91
)
HTML
(1 KB)
下载 PDF
(1201 KB) (
0
)
26
Application of hot pan furnace in co-processing of cement kiln
Hot!
MA Changpeng, et al.
2023 Vol. 0 (11): 26- [
Abstract
] (
190
)
HTML
(1 KB)
下载 PDF
(2164 KB) (
6
)
30
Characteristic analysis of waste rubber slag and summary of experience of collaborative treatment in cement kiln
HUANG Hanqing, et al.
2023 Vol. 0 (11): 30- [
Abstract
] (
107
)
HTML
(1 KB)
下载 PDF
(1381 KB) (
0
)
33
Technical improvement of injection point for disposal of hazardous liquid waste
WANG Yonggang, et al.
2023 Vol. 0 (11): 33- [
Abstract
] (
112
)
HTML
(1 KB)
下载 PDF
(1354 KB) (
22
)
36
Division and discussion of explosion-proof area of co-processing calcium carbide slag cement enterprises
TAO Chaoqun, et al.
2023 Vol. 0 (11): 36- [
Abstract
] (
79
)
HTML
(1 KB)
下载 PDF
(1592 KB) (
0
)
39
Kiln head electric dust collector ultra-clean emission reform in cement plant
YANG Guangfa
2023 Vol. 0 (11): 39- [
Abstract
] (
88
)
HTML
(1 KB)
下载 PDF
(1828 KB) (
0
)
42
Example of abnormal disposal of sulfur dioxide data at cement kiln exit end
SHAO Lei
2023 Vol. 0 (11): 42- [
Abstract
] (
84
)
HTML
(1 KB)
下载 PDF
(1831 KB) (
0
)
45
Application of SCR denitration technology with high temperature and low dust in cement kiln
YIN Zhiqiang, et al.
2023 Vol. 0 (11): 45- [
Abstract
] (
124
)
HTML
(1 KB)
下载 PDF
(1277 KB) (
0
)
47
Study on site acceptance method of safety production standardization for cement enterprise new construction projects
LIU Wenzhang, et al.
2023 Vol. 0 (11): 47- [
Abstract
] (
104
)
HTML
(1 KB)
下载 PDF
(1127 KB) (
0
)
51
Energy saving and carbon reduction upgrading of 4 800 t/d production line
WANG Fusheng, et al.
2023 Vol. 0 (11): 51- [
Abstract
] (
90
)
HTML
(1 KB)
下载 PDF
(2427 KB) (
5
)
55
Several practical modifications of combined grinding system
Hot!
HE Xuhan, et al.
2023 Vol. 0 (11): 55- [
Abstract
] (
114
)
HTML
(1 KB)
下载 PDF
(2403 KB) (
1
)
58
Technical improvement practice of Yinan Zhonglian cement combined grinding system
ZHANG Kailiang, et al.
2023 Vol. 0 (11): 58- [
Abstract
] (
134
)
HTML
(1 KB)
下载 PDF
(3029 KB) (
0
)
60
Practice of using radiant heat of kiln barrel for heating and low pressure steam replenishment to increase power generation
LIU Xiaofei, et al.
2023 Vol. 0 (11): 60- [
Abstract
] (
95
)
HTML
(1 KB)
下载 PDF
(1735 KB) (
0
)
63
Disposal scheme and implementation of bag weight unqualified products in bagged cement production line
ZHANG Xuejun
2023 Vol. 0 (11): 63- [
Abstract
] (
80
)
HTML
(1 KB)
下载 PDF
(1530 KB) (
0
)
67
MLS3626 raw material vertical mill vibration cause analysis and solution
LU Haipeng
2023 Vol. 0 (11): 67- [
Abstract
] (
97
)
HTML
(1 KB)
下载 PDF
(1411 KB) (
0
)
70
Two cases of technical improvement analysis of raw material vertical grinding system with different technical routes
XIONG Huijun
2023 Vol. 0 (11): 70- [
Abstract
] (
87
)
HTML
(1 KB)
下载 PDF
(1639 KB) (
0
)
73
Online solution for preventing and cleaning cement silo bunching without cleaning cement silo
YANG Yong, et al.
2023 Vol. 0 (11): 73- [
Abstract
] (
76
)
HTML
(1 KB)
下载 PDF
(3283 KB) (
0
)
76
Application of Web SCADA system in field of material statistics in cement enterprises
HU Bin, et al.
2023 Vol. 0 (11): 76- [
Abstract
] (
75
)
HTML
(1 KB)
下载 PDF
(1450 KB) (
1
)
79
Application of rotor variable frequency speed control system in high power fan
HOU Yongfeng, et al.
2023 Vol. 0 (11): 79- [
Abstract
] (
69
)
HTML
(1 KB)
下载 PDF
(1362 KB) (
0
)
82
Innovation practice of automatic blowdown technology of waste heat power generation boiler
SUN Youjia, et al.
2023 Vol. 0 (11): 82- [
Abstract
] (
108
)
HTML
(1 KB)
下载 PDF
(1635 KB) (
0
)
85
Improvement of clinker transfer process control
LIU Baoping, et al.
2023 Vol. 0 (11): 85- [
Abstract
] (
108
)
HTML
(1 KB)
下载 PDF
(1957 KB) (
0
)
Copyright © Editorial Board of Journal of Cement
Supported by:
Beijing Magtech
