Study on mixture ratio design and performance of cement stabilized gravels based on vibratory compaction method

2015 ◽  
pp. 1075-1078
Author(s):  
H Pan ◽  
L Qin ◽  
X Qi ◽  
L Xie ◽  
M Jin
Keyword(s):  
Mixture Ratio ◽  
Vibratory Compaction ◽  
And Performance ◽  
Mixture Ratio Design ◽  
Compaction Method

Mixture Ratio Design of Inorganic Polymer Concrete and the Study of Expansive Performance

2013 ◽  
Vol 357-360 ◽  
pp. 1142-1147 ◽  
Author(s):  
Li Ming Yu ◽  
Zhe An Lu ◽  
Xiao Hui Yuan ◽  
Hui Guo Chen
Keyword(s):  
Volume Growth ◽  
Inorganic Polymer ◽  
Polymer Concrete ◽  
Material Strength ◽  
Mixture Ratio ◽  
Engineering Research ◽  
Expansive Agent ◽  
New Material ◽  
Dry Shrinkage ◽  
Mixture Ratio Design

norganic polymer concrete of a new environment-friendly material has been the hot issue in engineering research so far. For this new material, the main job of the paper includes: we design mixture ratios of inorganic polymer concrete by ourselves, testing the concrete in the age periods of 3, 7, 28 d. The results indicate that this kind of material strength develops mainly in the first 3 d, the strength grows slowly in the later stage; the dry shrinkage of the configured concrete properties are measured, the curve of dry shrinkage shows that the dry shrinkage occurs mainly in the first 14 d and develops slowly in the late; And measure the expansion performance of the concrete member mixed the different categories expansive agent, the results show that the volume growth of mortar specimens to join HCSA expansion agent are obvious; Test results provide a certain basis for the inorganic polymer concrete of micro expansion.

Vibratory compaction method for preparing lunar regolith drilling simulant

2016 ◽  
Vol 58 (1) ◽  
pp. 145-154 ◽  
Author(s):  
Chongbin Chen ◽  
Qiquan Quan ◽  
Zongquan Deng ◽  
Shengyuan Jiang
Keyword(s):  
Lunar Regolith ◽  
Vibratory Compaction ◽  
Compaction Method

A Study on Ratio Design and Construction Technology of SAC Asphalt Concrete

2014 ◽  
Vol 488-489 ◽  
pp. 821-824
Author(s):  
Qian Yang
Keyword(s):  
Surface Structure ◽  
Asphalt Concrete ◽  
Highway Construction ◽  
Concrete Mixture ◽  
Construction Technology ◽  
Mixing Ratio ◽  
Test Results ◽  
Dense Structure ◽  
Mixture Ratio ◽  
Mixture Ratio Design

In the process of construction, with the mixture ratio design and appropriate construction conditions of SAC asphalt concrete mixture, it can not only have dense gradation with typeIasphalt concrete which has good durability and small porosity with its skeleton dense structure, but also it can be compatible with typeIIasphalt concrete which has the ability to resist deformation and the depth of the surface structure. This paper is making an effective exploration on the construction technology and the mixing ratio design of SAC asphalt concrete with the aid of the authors construction test results of a certain highway construction.

scholarly journals Performance Evaluation of Recycled Asphalt Pavement Materials and Cold Recycling Mixtures Designed with Vibratory Compaction Method

2019 ◽  
Vol 9 (15) ◽  
pp. 3167
Author(s):  
Yuhui Pi ◽  
Zhe Li ◽  
Yingxing Pi ◽  
Zhe Huang ◽  
Guangcan Li
Keyword(s):  
Performance Evaluation ◽  
Asphalt Pavement ◽  
Heavy Duty ◽  
Recycled Asphalt Pavement ◽  
Recycled Asphalt ◽  
Accelerated Curing ◽  
Vibratory Compaction ◽  
Cold Recycling ◽  
Emulsified Asphalt ◽  
Compaction Method

In this paper, the basic composition and performance evaluation of the recycled asphalt pavement (RAP) materials were firstly analyzed, and two methods were proposed to evaluate strength characteristics of RAP materials, including a triaxial method for the residual strength and the mortar cementing method for the strength of RAP lump. Then, the cold recycling technology was applied on RAP materials with emulsified asphalt by using vibratory compaction and heavy-duty compaction methods (Proctor compaction method), and the results showed that the maximum dry density obtained by heavy-duty compaction was closer to the actual situation. Finally, the effects of wetting water, emulsified asphalt dosage and curing conditions on the performance of the specimens were investigated. It was found that when the emulsified asphalt was mixed uniformly, whether or not to add the wetting water have almost no effect on the strength of the molded specimens. When the matrix asphalt content of the emulsified asphalt was 30%~60%, the water could be directly added to the cold recycling mixture. The intensity of accelerated curing for two days at 40 °C was approximately equal to that of natural curing for three days, while that of accelerated curing for three days at 40 °C was approximately equal to that of natural curing for seven days, which provided a basis for the short-term laboratory test.

Study on Long Term Performance of Concrete of Slag-Alkali Higher Calcium Fly Ash

2006 ◽  
Vol 302-303 ◽  
pp. 98-104
Author(s):  
Ming Tang ◽  
Xiao Li
Keyword(s):  
Fly Ash ◽  
Orthogonal Design ◽  
Concrete Specimen ◽  
Mixture Ratio ◽  
Dispersion Degree ◽  
Set Up ◽  
Long Term Performance ◽  
Term Performance ◽  
Mixture Ratio Design

The slag-alkali is used to activate the activity of higher calsium fly ash. By the designs of the mixture ratio and the quadratic regression orthogonal design, the best combination is sought out. Several mixture factors which affect the rule of the concrete material properties and long term performance are researched. The mathematic models which are set up by the mixture ratio design with the quadralic regression orthogonal design can be effective. The precision is high. The strength of the concrete of slag-alkali fly ash was still increasing after 8 year. The dispersion degree of those specimens is small. The SEM photo of cracked specimen and early concrete specimen shows the surface of fly ash in 7 days concrete is slick and that in 8 years old specimen has been enwrapped tightly by much hydrate plant.

Effect of Aggregate Degradation on Specimens Compacted by Superpave Gyratory Compactor

1997 ◽  
Vol 1590 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Ronald Collins ◽  
Donald Watson ◽  
Andrew Johnson ◽  
Yiping (Peter) Wu
Keyword(s):  
Los Angeles ◽  
Volumetric Properties ◽  
Los Angeles Abrasion ◽  
Superpave Gyratory Compactor ◽  
Asphalt Mix ◽  
Field Compaction ◽  
Gyratory Compaction ◽  
Vibratory Compaction ◽  
Level I ◽  
Compaction Method

Aggregate degradation during gyratory compaction may cause changes in the original gradation of the aggregate, and it may also affect volumetric requirements for Superpave Level I mix design. The effect of aggregate degradation on the design gradation and final volumetric properties of the asphalt mix compacted by the Superpave gyratory and Astec vibratory compactors was evaluated. Because vibratory compaction is an alternative compaction method that simulates field compaction, a vibratory compactor developed by Astec Industries, Inc., was used for comparison with the Superpave gyratory compactor. Aggregates with high and low Los Angeles abrasion losses were used to evaluate the effect of aggregate toughness or abrasion resistance on gradation change and volumetric properties. The changes in the amount of material passing the 0.075-mm sieve due to aggregate degradation during compaction were not significant enough to prevent specimens from meeting dust proportion requirements, regardless of whether low-or high-abrasion loss aggregates were used. A mix containing high-abrasion aggregate was less likely to meet restricted zone requirements than a mix using low-abrasion aggregate after degradation resulting from compaction.

Optimum Study and Engineering Application of Mixing Ratio for C50 Concrete

2010 ◽  
Vol 168-170 ◽  
pp. 537-540 ◽  
Author(s):  
Xiao Sheng Song ◽  
Guo Qiang Xu
Keyword(s):  
Concrete Strength ◽  
Engineering Application ◽  
Concrete Mixture ◽  
Orthogonal Experimental Design ◽  
Mixing Ratio ◽  
Polycarboxylic Acid ◽  
Mixture Ratio ◽  
Acid Type ◽  
Type Water ◽  
And Performance

The influence of fly ash content, water-cement ratio, sand ratio and polycarboxylic acid type water-reducer dosage on the early-strength and performance of C50 concrete is investigated combined with engineering application. The concrete mixture ratio is optimized by the orthogonal experimental design. Concrete strength, slump and slump loss are verified by experiments. Application results show the designed concrete mixture ratio reaches the expected requirements

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