Configuration of Low-Strength Self-Compacting Concrete Adapted to Local Raw Materials

2011 ◽  
Vol 335-336 ◽  
pp. 1159-1162
Author(s):  
Jie Li
Keyword(s):  
Raw Materials ◽  
Mixing Ratio ◽  
Self Compacting Concrete ◽  
Strength Grade ◽  
Mixing Proportion ◽  
Low Strength

C25 self-compacting concrete which meets the requirement of workability and strength grade is maked up by selecting local raw materials, using reasonable compound admixtures, based on c25 self-compacting concrete preliminary mixing proportion. we try to pursue an economical mixing ratio of the Low-strength Self-compacting Concrete which can adapt to the characteristics of the region's raw materials. The purpose is to promote the application of self-compacting concrete in region.

C80 Early Strength Micro Expansion of Steel Tube Reinforced Concrete Research

2015 ◽  
Vol 1119 ◽  
pp. 752-755
Author(s):  
Chang Zheng Sun ◽  
Zheng Wang
Keyword(s):  
High Performance ◽  
Raw Materials ◽  
Influence Factors ◽  
High Strength ◽  
Steel Tube ◽  
Strength Analysis ◽  
Self Compacting Concrete ◽  
Mix Proportion ◽  
Early Strength ◽  
Working Performance

Optimization of mix proportion parameter ，Using ordinary raw materials makes a C80 high performance self-compacting concrete;By joining a homemade perceptual expansion agent, significantly improve the early strength of concrete and effective to solve the high strength of self-compacting concrete caused by gelled material consumption big contraction;Further study on the working performance of high-strength self-compacting concrete, age strength, analysis the influence factors of concrete are discussed.

Experimental Study on Cracking Property of Self-Compacting Concrete

2008 ◽  
Vol 400-402 ◽  
pp. 433-438
Author(s):  
Nan Guo Jin ◽  
Xian Yu Jin ◽  
Xiang Lin Gu
Keyword(s):  
Experimental Study ◽  
Tensile Strain ◽  
Experimental Results ◽  
Flexural Test ◽  
Self Compacting Concrete ◽  
Free Shrinkage ◽  
Normal Concrete ◽  
Strength Grade ◽  
Mix Proportion ◽  
Key Parameter

Taking free shrinkage as the key parameter in evaluating cracking of concrete, the cracking properties of self-compacting concrete with strength grade of C35 and C50 were investigated based on ring and slab restraint tests. Meanwhile, the ultimate tensile strain of self-compacting concrete was studied by using flexural test. Experimental results show that the shrinkage of self-compacting concrete is lower than that of normal concrete. Self-compacting concrete cracks later than normal concrete with the same strength grade. Although the ultimate flexural tensile strains of self-compacting concrete in 7 d and 28 d are a little bit lower than that of the normal concrete, it can still be concluded from the research that the cracking property of self-compacting concrete can be greatly improved by using proper mix proportion.

The Compounding and Application Mechanism of Polycarboxylate-Based Superplasticizers in the Self-Compacting Concrete

2011 ◽  
Vol 250-253 ◽  
pp. 711-717 ◽  
Author(s):  
Miao Miao Gui ◽  
Yun Hui Fang ◽  
Zi Dong Lan ◽  
Fei Yu Yu ◽  
Tian Xing Lin ◽  
...  
Keyword(s):  
Steric Hindrance ◽  
Graft Copolymerization ◽  
Raw Materials ◽  
The Self ◽  
Main Mechanism ◽  
Self Compacting Concrete ◽  
The Given ◽  
Copolymerization Reaction

Polycarboxylate-based superplasticizers are synthesized by radical graft copolymerization reaction, and the products are divided into ester series (PC-1) and ether series (PC-2) on the basis of different big monomers. This article studies on influence of the different composition and dosages of the synthetic superplasticizers in the self-compacting concrete (SCC). The results show that the requirements of SCC workability can be achieved through simple adjustment kinds and dosages of the synthetic superplasticizers under the given mix proportions and the raw materials. And the main mechanism of the polycarboxylate-based superplasticizers is steric hindrance effect.

Research on Mixing Ratio of Waste Mud Brick

2013 ◽  
Vol 368-370 ◽  
pp. 1103-1106
Author(s):  
Hai Long Wu ◽  
Bing Zhang Huang ◽  
Bang Biao Huang ◽  
Ji Zhen Zhu ◽  
Xi Qiang Li ◽  
...  
Keyword(s):  
Building Materials ◽  
Heat Insulation ◽  
Raw Materials ◽  
Mineral Resources ◽  
Green Building ◽  
National Standards ◽  
Mixing Ratio ◽  
Waste Reuse ◽  
Green Building Materials ◽  
The Relationship

In order to achieve green building materials, energy conservation, waste reuse purposes. Use city sewage sludge as part of the raw materials for production of shale brick is studied by experiments adopted the different mixing ratio, find matching and the relationship between the compressive strength. Experimental results show that the shale powder to add quality percentage is 40% of dry sludge, formed a burning brick, brick of various performance accord with national standards, not only can save coal and mineral resources, improve the heat insulation brick, but also a lot of recycling of utilization of sludge.

Durability Research of Thermal Insulation Glazed Hollow Bead Concrete

2013 ◽  
Vol 639-640 ◽  
pp. 350-353 ◽  
Author(s):  
Xiao Hong Zheng ◽  
Zhu Li ◽  
Yuan Zhen Liu ◽  
Shang Song Qin
Keyword(s):  
Experimental Study ◽  
Energy Efficiency ◽  
Theoretical Analysis ◽  
Thermal Insulation ◽  
Raw Materials ◽  
Building Energy ◽  
Building Energy Efficiency ◽  
Insulation Material ◽  
Mixing Proportion ◽  
Good Workability

The durability of thermal insulation glazed hollow bead concrete, which is a kind of structure self-thermal insulation material produced in the background of building energy efficiency, has been systematically researched in order to make it with a good workability. Theoretical analysis and experimental study have been made from the raw materials and construction mixing proportion in the basis of the analysis to the influencing factors of its durability so as to can improve its durability.

Low Strength Self Compacting Concrete Compressive Strength Test

2013 ◽  
Vol 275-277 ◽  
pp. 2041-2044
Author(s):  
Feng Yan ◽  
Nan Pang
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Compression Strength ◽  
Strength Test ◽  
The Self ◽  
Concrete Compressive Strength ◽  
Self Compacting Concrete ◽  
Intensity Index ◽  
Compressive Strength Test ◽  
Low Strength

In this paper,the mechanical properties were studied,the self compacting concrete cubic compression strength,prismatic compressive strength test,discussed two kinds of relationship between intensity index.

Effect of the Alkali-Activation on the Mechanical Property of Geopolymer Composite

2014 ◽  
Vol 804 ◽  
pp. 15-18
Author(s):  
Yeong Geum Son ◽  
Woo Keun Lee
Keyword(s):  
Mechanical Property ◽  
Compressive Strength ◽  
Calcium Ions ◽  
Raw Materials ◽  
Bottom Ash ◽  
Physical Property ◽  
Alkali Activation ◽  
Mixing Ratio ◽  
Mswi Bottom Ash ◽  
Silica Alumina

In this work, pastes were prepared from slag and MSWI bottom ash by geopolymer technique. And its physical property was evaluated with mixing ratio of sodium silicate and potassium silicate. The amounts of leaching products, such as silica, alumina and calcium ions were changed for mixing ratio of raw materials. The compressive strength was increased with the increment of leaching amount of silica, alumina and calcium ions.

Thermogravimetric Experimental Study on Combustion Performance of Co-Firing of Sludge, Coal and Biomass in Micro-Oxygen-Rich Environment

2015 ◽  
Vol 768 ◽  
pp. 96-107 ◽  
Author(s):  
Li Jun Fang ◽  
Tong Cao ◽  
Hong Kun Liu ◽  
Chang Li
Keyword(s):  
Activation Energy ◽  
Combustion Characteristic ◽  
Biomass Combustion ◽  
Mixing Ratio ◽  
Analysis Method ◽  
Characteristic Index ◽  
Mixed Sample ◽  
Combustion Performance ◽  
Mixing Proportion ◽  
Burnout Rate

In order to study the combustion characteristics of sludge, coal, biomass and the mixed sample in micro-oxygen-rich environment (simulating micro-oxygen-rich environment with 30%O2/70%CO2), thermogravimetric analysis method is used in the paper. The experimental results show that under the micro-oxygen-rich environment, sludge has low ignition temperature, the average burning rate, burnout rate and flammability index, so combustion performance of sludge alone is poor and the weightlessness is more obvious in 200~600°C. But after mixing coal or biomass, combustion performance of sludge is improved. We use comprehensive application of flammability index and burnout characteristics index to determine the best mixing ratio is about 65% of sludge and coal, about 45% of sludge and biomass. Comprehensive combustion characteristic index may not be suitable for determining combustion performance of the sludge and its samples by comparison to S under the optimum mixing ratio of the sample and there are some errors. Biomass activation energy is the largest, the activation energy of sludge minimal. But the activation energy of the mixed sample doesn’t change regularly with the increase of sludge mixing proportion. So there is a deviation that we determine the mixing characteristics by a simple comparison of the activation energy of the samples. This paper provides a theoretical and data support for the selection and calculation of combustion parameters of mixed sludge and resource utilization of sludge.

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