Design and Construction Analysis of Cement-Stabilized Macadam Foundation

2013 ◽  
Vol 340 ◽  
pp. 80-84
Author(s):  
Deng Lin
Keyword(s):  
Mechanical Property ◽  
Frost Resistance ◽  
Water Stability ◽  
Good Mechanical Property ◽  
Control Methods ◽  
Mechanical Theory ◽  
Cement Stabilization ◽  
Base Course ◽  
Pavement Base ◽  
Design And Construction

Cement-stabilized macadam has good mechanical property, but also has the advantages of plate nature, water stability and frost resistance, and it is widely used in the pavement base or sub-base course of expressway. Based on the fundamental mechanical theory of the strength and the global stability of cement stabilization macadam, this article discusses how to design the grading of the cement stabilization macadam and the influencing factors, besides, it also presents the construction control methods of the cement stabilization macadam, which is of guiding significance to the design and construction of the cement stabilization macadam.

The Research on the Application of the Steel Slag Produced by the Converters of Jigang Group Co. Ltd on Base Course

2012 ◽  
Vol 178-181 ◽  
pp. 1699-1705
Author(s):  
Fa Liang Lu ◽  
Jin Li
Keyword(s):  
Mechanical Property ◽  
Unconfined Compressive Strength ◽  
Steel Slag ◽  
Coal Ash ◽  
Strength Test ◽  
Water Stability ◽  
Compressive Strength Test ◽  
Base Course Material ◽  
Course Material ◽  
Base Course

To test and inspect the chemical compositions and mechanical properties of the steel slag produced by the converters of Jigang Group co. ltd, and study the feasibility of using the steel slag as base course material. Prepare cement stabilized steel slag specimens with different contents of cement mixed for the unconfined compressive strength test. Determine through test its strength after 7 days and 28 days and its water stability after 7 days’ soaking. Prepare in the same method of two different kinds of cement and coal ash stabilized specimens with different contents of coal ash mixed for the unconfined compressive strength test, to test its strength and water stability. The comparison on mechanical property with cement stabilized macadam indicates that the cement stabilized steel slag and cement with coal ash stabilized steel slag both have favorable mechanical property and water stability and the steel slag produced by the converters of Jigang Group co. ltd can be popularized for use as base course material.

Experimental Study in Gangue Base-Course Mixture Materials for Pavement

2013 ◽  
Vol 860-863 ◽  
pp. 1270-1273 ◽  
Author(s):  
Fu Jun Wang ◽  
Jing Luo ◽  
Hui Rong Zhu
Keyword(s):  
Industrial Waste ◽  
Road Construction ◽  
Drying Shrinkage ◽  
Pozzolanic Reaction ◽  
Water Stability ◽  
Solid Skeleton ◽  
Grass Roots ◽  
Base Materials ◽  
Base Course ◽  
Pavement Base

Coal gangue, acting as the solid skeleton of pavement base materials, can efficiently reduce the drying shrinkage. Additionally, similar to fly ash in mixture material, gangue can react with lime (so called pozzolanic reaction), resulting in the formation of pavement base with a certain strength, good water stability and frost resistance, are good overall at the grass-roots level. Many cities in our country has gradually tried to use different kinds of industrial waste residue instead of sand to prepare the pavement base materials. This way, not only the waste residue is recycled, the lack of sand aggregates in road construction can also be overcome, which facilitate technical and economic growths.

Experimental Study on the Performances of Cement Stabilized Iron Ore Tailing Gravel in Highway Application

2011 ◽  
Vol 97-98 ◽  
pp. 425-428 ◽  
Author(s):  
Ji Shu Sun ◽  
Yuan Ming Dou ◽  
Zhao Xia Chen ◽  
Chun Feng Yang
Keyword(s):  
Frost Resistance ◽  
Iron Ore ◽  
Test Methods ◽  
Water Stability ◽  
Waste Products ◽  
Iron Ore Tailings ◽  
Resistance Property ◽  
Base Course Material ◽  
Iron Ore Tailing ◽  
Base Course

Iron ore tailings as a kind of waste products after ore dressing is one of the major industrial solid wastes. Iron ore tailings not only cover huge land and pollute environment, but also give rise to security risks. The comprehensive utilization of iron ore tailings need to be studied systematically. According to the method in Test Methods of Materials Stabilized with Inorganic Binders for Highway Engineering, the technical performances of cement stabilized iron ore tailing gravel in highway application were studied by systemic experiments in this paper. These include the strength, modulus, and frost resistance property, water stability. And the influencing factors of the mixture strength were analyzed, too. The results show that the mixture of cement stabilized iron ore tailing gravel has higher strength and modulus, good frost resistance property and water stability. The technical performances of cement stabilized iron tailing gravel conform to the current specification, so it can be used as sub-base course or base course material.

Self-healing poly(siloxane-urethane) elastomers with remoldability, shape memory and biocompatibility

2016 ◽  
Vol 7 (47) ◽  
pp. 7278-7286 ◽  
Author(s):  
Jian Zhao ◽  
Rui Xu ◽  
Gaoxing Luo ◽  
Jun Wu ◽  
Hesheng Xia
Keyword(s):  
Mechanical Property ◽  
Shape Memory ◽  
Microphase Separation ◽  
Diels Alder ◽  
Good Mechanical Property ◽  
Self Healing ◽  
Healing Efficiency ◽  
Good Biocompatibility

The poly(siloxane-urethane) elastomers with microphase separation structure and Diels–Alder bonds show high healing efficiency, good mechanical property and good biocompatibility.

Mussel-inspired adhesive gelatin–polyacrylamide hydrogel wound dressing loaded with tetracycline hydrochloride to enhance complete skin regeneration

Soft Matter ◽  
2022 ◽  
Author(s):  
Yamei Wang ◽  
Dongdong Xiao ◽  
Lin Quan ◽  
Hongbin Chai ◽  
Xiaofeng Sui ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Wound Dressing ◽  
Antibacterial Property ◽  
Wound Care ◽  
Skin Regeneration ◽  
Tetracycline Hydrochloride ◽  
Market Size ◽  
Good Mechanical Property ◽  
Polyacrylamide Hydrogel

Even though the global wound care market size was valued at USD 19.83 billion in 2020, it is still a challenge to develop a hydrogel-based wound dressing with a good mechanical property, adhesiveness and antibacterial property.

scholarly journals Application of micro expansion cement in Pavement Base

2020 ◽  
Vol 165 ◽  
pp. 04048
Author(s):  
Li Hongjun
Keyword(s):  
Building Material ◽  
Road Building ◽  
Strict Control ◽  
Cement Stabilization ◽  
The Law ◽  
Pavement Base ◽  
Shrinkage Coefficient

Cement stabilized macadam base is widely used as a road building material in various grades of highways. Based on the law that the base cracking is mainly affected by the shrinkage of cement stabilization materials, this paper introduces the method of adding micro-expanding cement to the base that can effectively reduce the hydration shrinkage coefficient and dryness shrink factor. At the same time, it is pointed out that strict control of the amount of micro-expansion cement and the quality of the construction can also effectively reduce the occurrence of cracks in the base.

scholarly journals Evaluation on Strength Properties of Lime–Slag Stabilized Loess as Pavement Base Material

2019 ◽  
Vol 11 (15) ◽  
pp. 4099 ◽  
Author(s):  
Liang Jia ◽  
Li Zhang ◽  
Jian Guo ◽  
Kai Yao ◽  
Sin Mei Lim ◽  
...  
Keyword(s):  
Base Material ◽  
Correlation Coefficients ◽  
Strength Properties ◽  
Binder Content ◽  
Curing Time ◽  
Test Results ◽  
Base Course Material ◽  
Course Material ◽  
Base Course ◽  
Pavement Base

This study aimed to investigate the feasibility of using lime–slag stabilized loess as base-course material by assessing its unconfined compressive strength (UCS). Loess stabilized with various mix ratios were compacted and cured to three, five, seven, and 28 days, respectively, for further strength tests. The effects of binder content, lime-to-slag (L/S) ratio, porosity, and curing time on the UCS of stabilized loess were addressed in detail. The test results show that UCS increases with the increase in binder content or curing time, and it gains strength rapidly within the first seven days of curing. At the same binder content, UCS decreases with the decrease in L/S ratio or porosity. Finally, the correlations of UCS with binder content, porosity, and curing time were derived, which exhibited reasonable correlation coefficients R2 (from 0.86 to 0.97).

Ocean Engineering Concrete Using High-Volume GGBS

2012 ◽  
Vol 238 ◽  
pp. 71-74 ◽  
Author(s):  
Ke Liang Li
Keyword(s):  
Mechanical Property ◽  
Diffusion Coefficient ◽  
Effective Diffusion ◽  
Chloride Ion ◽  
High Volume ◽  
Gas Diffusion ◽  
Good Mechanical Property ◽  
Ocean Engineering ◽  
Volume Stability ◽  
Chloride Ion Penetration

To improve ocean engineering durability, concrete using high-volume ground granulated blast-furnace slag (GGBS) was prepared, its mechanical property and durability were investigated. 4% activator and 61% GGBS were used to replace 65% cement in cementitious material. Activator was used to improve workability, volume stability and early strength of high-volume GGBS concrete. Ocean concrete using high-volume GGBS has good impermeability with small gas diffusion coefficient and relative permeability coefficient. As the good property of resistance to chloride-ion penetration with a low effective diffusion coefficient, it can protect steel-bar from corrosions. Property of frost resistance is also favorable. Expansions caused by alkali-silica reaction and sulfate attack fall down markedly after using high-volume GGBS. It is proved that the high-volume GGBS concrete with good mechanical property and durability is applicable to the constructing of ocean engineering concrete.

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