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2025 Vol. 0, No. 11
Published: 2025-11-10
1
Research on influence of silica fume on performance of steel slag cement mortar and its strength mechanism
Hot!
SONG Yuzhang, et al
In order to achieve high-volume and high-value utilization of steel slag resources, this paper proposes an innovative strategy for preparing high-strength mortar by using steel slag as the main raw material, introducing a certain amount of silica fume and supplementing it with an appropriate amount of activator to activate the hydration activity of steel slag under humid heat curing. The study concluded that after introducing silica fume into the cementitious material system with a 60% steel slag admixture, high-performance steel slag cementitious mortar(SSCM)with a strength of over 70 MPa can be successfully prepared using humid heat curing. Compared with the traditional steel slag polymer cementitious system, the introduction of silica fume to replace part of the slag while maintaining the Ca/Si of the system can effectively reduce the amount of system accelerator, so that the compressive strength of the mortar changes slightly when the accelerator content is reduced from 17% to 11%. Under the conditions of humid heat curing, extending the curing time and using a low alkali accelerator with an amount of less than 10%, the strength of the SSCM can also be sustainably developed to a suitable strength for engineering applications. At the same time, the introduction of silica fume in SSCM can effectively reduce the drying shrinkage of the mortar and exhibit better durability. The mechanism of strength formation in the system is that the introduction of silica fume can effectively provide SiO2- 3 to the system to participate in the formation of C-S-H gel, and can continuously promote the formation of C-S-H gel, increase the density of the structure, and increase the mechanical properties of SSCM.
2025 Vol. 0 (11): 1- [
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215
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8
Influence of fluorite waste residue dosage on formation of minerals and properties of sulphoaluminate cement clinker
ZHOU Yanhong, et al
Sulfate aluminate cement is a green low calcium cementitious material that is energysaving and emission reducing. This cement has excellent properties such as fast setting and hardening, early strength, high strength, and resistance to sulfate corrosion, and has application prospects in various engineering fields. However, sulfoaluminate cement has problems such as slow strength growth and shrinkage in the later stage, which affects its application range. In this article, fluorite waste residue from the photovoltaic industry is used as a mineralizer and added to raw materials to prepare sulfoaluminate cement clinker. The research results indicate that the dosage of fluorite waste affects the mineral composition ratio of clinker, and adding 0.6% fluorite waste can improve the performance of sulfoaluminate cement clinker. By adding 12% hard gypsum to the clinker, high early strength sulfoaluminate cement with a compressive strength of 16.0 MPa at 3 hours and 62.2 MPa at 28 days can be prepared, and the strength steadily increases in the later stage.
2025 Vol. 0 (11): 8- [
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181
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13
Discussion on current application status and development trends of energy storage technology in cement industry
Hot!
XU Rong
2025 Vol. 0 (11): 13- [
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187
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15
Research on environmental protection standardization in cement industry
LIU Hongli, et al
2025 Vol. 0 (11): 15- [
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196
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17
Research on performance of cement SCR denitrification and ash cleaning system
LI Lingxiao, et al
2025 Vol. 0 (11): 17- [
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159
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20
A brief discussion on quality control and application of high sulfate-resistant cement in central asia
Hot!
WU Jianbin, et al
2025 Vol. 0 (11): 20- [
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172
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23
Modification of heat source for drying in slag vertical mill
LI Linlin
2025 Vol. 0 (11): 23- [
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166
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25
Application of “single inlet and double outlet” cyclone in raw material vertical mill
LIU Pengfei, et al
2025 Vol. 0 (11): 25- [
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187
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28
Practical measures for reducing pressure of roller press and air volume of V-type classifier
Hot!
CAI Wenju, et al.
2025 Vol. 0 (11): 28- [
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183
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31
Energy-saving transformation technology for differently-used raw coal in sintering system
YAO Peng, et al
2025 Vol. 0 (11): 31- [
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156
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34
Application of flapping wing grate plates in the third generation grate cooler
FANG Qinghe, et al.
2025 Vol. 0 (11): 34- [
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161
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36
Structural analysis and optimization of raw material dynamic powder separator
BO Hai, et al.
Based on the principle of computational fluid mechanics, this paper simulated and analyzed the internal flow rate of raw material dynamic separator by changing the structure of guide blade and the angle of discharge pipeline. The analysis found that when the blade deflection angle is between 10° and 20°, the flow field is relatively stable. And when the pipe angle is 138°, the fine powder collection effect is the best.
2025 Vol. 0 (11): 36- [
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175
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40
Boiler drum water level control system for cement plant waste heat power generation based on Smith predictor
HONG Cencen, et al
2025 Vol. 0 (11): 40- [
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130
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45
Design and application of PCS7 control system in substituted fuel project of cement industry
YUAN Yaxiong, et al
2025 Vol. 0 (11): 45- [
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181
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48
Intelligent management of cement plant storage facilities based on 3d inventory scanning imaging technology
LIN Xi
2025 Vol. 0 (11): 48- [
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155
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53
Main measures for isolated-grid operation of power stations in foreign cement plants
ZHANG Fubin, et al
2025 Vol. 0 (11): 53- [
Abstract
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176
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56
Influence of vector control detection data deviations on temperature rise of motor
LI Wenbin, et al.
2025 Vol. 0 (11): 56- [
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163
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58
Research on detection method of cement mortar water retention rate
ZHANG Yanjuan, et al
2025 Vol. 0 (11): 58- [
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145
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60
Multi-performance synergy of steel slag–phosphogypsum supersulfated cement
YE Huayong
Phosphogypsum is a by-product of the phosphate fertilizer industry. If it is stored for a long time, it will cause environmental pollution. To achieve high-value utilization, this paper uses phosphogypsum as the sulfate excitation source, combines steel slag and mineral powder to prepare a full-waste-triple-component super sulfate cement, and systematically evaluates its mechanical properties, dry shrinkage behavior, hydration products, microstructure, environmental safety and carbon emission levels. Seven sets experiments are configured using the simple centroid design method, and mechanical, dry shrinkage, XRD, SEM, leaching toxicity and carbon emission tests are carried out. The results show that when the phosphogypsum content is 20%~25%, the steel slag content is 15%~20%, and the mineral powder content is 60%~65%, the 28-day compressive strength is more than 45 MPa, the dry shrinkage strain is controlled within 1 300~1 500 με, which exhibits good mechanical and volume stability. XRD and SEM reveal that under the optimized ratio, a large amount of calcium aluminosilicate and C-(A)-S-H are formed, which significantly densifies the microstructure. The supersulfated cement system can effectively solidify F-, PO3- 4 and other ions, which meets the GB 8978—1996 standard, demonstrating environmental friendliness. The carbon emission is minimized to 35 kg/t, reducing by 95.6% compared to Portland cement, demonstrating significant low-carbon advantages
2025 Vol. 0 (11): 60- [
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139
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67
Knowledge graph analysis of the current research status of magnesium phosphate cement
XING Anan, et al
2025 Vol. 0 (11): 67- [
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139
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73
Influence of recycled concrete aggregate on properties of concrete containing fly ash
ZHANG Biaofu, et al.
This paper investigates the effects of different substitution ratios of recycled concrete aggregates on the dimensional stability and durability of concrete containing fly ash. Compared with fine recycled concrete aggregates, using coarse recycled concrete aggregates resulted in higher residual compressive strength after dry-wet cycles and freeze-thaw cycles. The free drying shrinkage of concrete using fine recycled concrete and coarse recycled concrete aggregates significantly increased by 76% and 82% respectively, while the crack width of constrained drying shrinkage decreased by 19.7% and 14.1% respectively.
2025 Vol. 0 (11): 73- [
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137
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78
Study on effects of different polymer dosages on mechanical properties of dry powder cement mortar
YU Jing, et al
2025 Vol. 0 (11): 78- [
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184
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82
Research on gradation of coarse aggregate in concrete
JIANG Qiangxing
2025 Vol. 0 (11): 82- [
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170
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85
Research on rapid detection and performance evaluation methods of cement concrete materials
FAN Xinmin
2025 Vol. 0 (11): 85- [
Abstract
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164
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88
Analysis of consolidation grouting construction for concrete core wall foundation of reservoir project
GENG Changliang, et al
2025 Vol. 0 (11): 88- [
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155
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91
Research on application of concrete construction technology in construction of Guiyang pumped storage power station
CHEN Jun, et al.
2025 Vol. 0 (11): 91- [
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135
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94
Research and optimization analysis on construction technology of cement-based waterproof layer for underground integrated pipeline trenches
CUI Lei
2025 Vol. 0 (11): 94- [
Abstract
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137
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97
Experimental study on effects of low-acid ether ratio polycarboxylic acid mother liquor on concrete properties
MENG Xianliang, et al
2025 Vol. 0 (11): 97- [
Abstract
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140
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100
Optimization of mix ratio of anti-seepage concrete for urban underground integrated pipeline tunnels and its performance study
YANG Ziqiang
2025 Vol. 0 (11): 100- [
Abstract
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169
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103
Quality control of cement-stabilized gravel base layer construction and combined rolling technology
ZHANG Lianpeng, et al
2025 Vol. 0 (11): 103- [
Abstract
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157
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106
Research on systematic excavation of high slopes in pumped storage power stations and high-performance concrete support technology
XIAO Hong
2025 Vol. 0 (11): 106- [
Abstract
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150
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109
Application of prefabricated steel pipe concrete column ring beam reinforcement installation technology
ZHANG Jian
2025 Vol. 0 (11): 109- [
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155
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112
Comparison and applicability study of concrete strength testing methods for structural entities
LI Xinghua
2025 Vol. 0 (11): 112- [
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128
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118
Research on key technologies for on-site detection of concrete structure engineering under complex conditions
DONG Tianfu
2025 Vol. 0 (11): 118- [
Abstract
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161
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121
Quality management of large volume concrete construction in high-rise buildings
CHEN Hongyu
2025 Vol. 0 (11): 121- [
Abstract
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170
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124
Application of infrared thermal imaging technology in detection of concrete masonry structures
HE Meiling
2025 Vol. 0 (11): 124- [
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139
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127
Layout plan for sand, gravel aggregates and concrete systems during construction of hydropower hub project
LIU Gang
2025 Vol. 0 (11): 127- [
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174
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131
Reclaimed concrete application technology in municipal asphalt pavement base layer
LI Li, et al.
2025 Vol. 0 (11): 131- [
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141
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134
Prevention methods for cracks in cast-in-place concrete slabs during on-site construction of civil engineering projects
LI Lirong
2025 Vol. 0 (11): 134- [
Abstract
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171
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137
Durability of concrete under salt erosion and its reinforcement methods
LIN Guangyue
2025 Vol. 0 (11): 137- [
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181
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140
Limitations of non-destructive testing for concrete cast-in-place piles
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OU Xianxiong
2025 Vol. 0 (11): 140- [
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181
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143
Research on relationship between porous structure and mechanical properties of foam concrete
WEI Bing, et al.
2025 Vol. 0 (11): 143- [
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165
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146
Research on key technical indicators of high-volume fly ash concrete
YANG Lei, et al
2025 Vol. 0 (11): 146- [
Abstract
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178
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149
Analysis of reinforced concrete structure reinforcement design application in construction engineering
XIE Hua, et al
2025 Vol. 0 (11): 149- [
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172
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152
Research and application of self-repairing dense waterproof concrete construction technology
WEN Dawei
2025 Vol. 0 (11): 152- [
Abstract
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199
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155
Optimization of cement-based materials for enhancing the durability of concrete
YANG Zhanfei, et al
2025 Vol. 0 (11): 155- [
Abstract
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171
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158
Analysis of cracking prevention technology for reinforced concrete structures of flood control dams in wetlands
GAO Wenxing
2025 Vol. 0 (11): 158- [
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142
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