concrete
Experimental Study on Macro-Meso Compressive Property of Concrete Exposed to Simulated Acid Rain Environment
Pollution of acid rain has attacked the attention of environmentalists worldwide. Large amounts of acid medium exist in acid rain environment,which have severe corrosion effects on the material of both concrete and reinforcing steel.It has been reported that many concrete structures servicing in the acid rain environment have been damaged severely long before their servicing [...]
Research on the Early Age Cracking Sensitivity of Concrete Doped Steel Slag
As a industrial by-product of steel industry, recycling of steel slag, energy conservation and environment management are important aspects of the sustainable development strategy and steel slag is also an important direction of the building materials at home and abroad research. As a cement concrete additive, the activity of steel slag is similar with slag [...]
Mesoscopic Numerical Simulation and Test Study on Concrete’s Size Effect
In this paper, the size effect of concrete prisms’ compressive strength and the samples’ destruction process under uniaxial compression are studied experimentally. Test results show that the uniaxial compressive strength of concrete specimen decreases when its geometry size increases; reinforced concrete prisms have greater size effect parameters than concrete ones. The concrete’s failure is due [...]
Research of Ultra-High Strength and High Wear-Resistant Concrete Material
With the development of concrete research, the high performance cement-based composite material has been paid high attention to in worldwide. High performance and high wear-resistant concrete has been prepared by using wearable aggregates such as sintered bauxite, alumina ceramic and so on in some company abroad and has been used in the practical projects. But [...]
Experimental Study and Theoretical Analysis on the Mechanical Properties of Concrete after Freezing and Thawing
The concrete of the bridge infrastructure under soggy saturated or soppy state in the North Sea marine environment take place freeze-thaw damage, as the temperature changes positive and negative alternately brought by the sea water freeze-thaw. Frost resistance is an important aspect of durability of concrete structure. The mechanic performance of concrete will be destroyed [...]
Study on the Durability Index of Concrete Pavements
It is a main factor of influencing pavement performance and shorting pavement life that the durability of the service concrete is insufficient. At present,the main problem about durability is:the index is indeterminate,not overall, nonstandard.The durability problem of the service concrete is a comprehensive problem,it is not all scientific to appraise and judge with any single [...]
Effects of Water Reducing Agent and Expansion Admixture on Early-age Shrinkage of Concrete
This paper studied the early age shrinkage of the concrete added with water reducing agent and expansion admixture,studied the composite effect on early age shrinkage,also studied the influences of the initial curing age, the curing time and the curing methods on early age shrinkage of HEA concrete, this paper also studied the effect of different [...]
Experimental Study and Finite Element Analysis on CFRP Reinforced Concrete Beams
Because of physical aging, chemical corrosion, changes of social needs, improvement of design standards, structural damages caused by natural disasters, the useful life of buildings was reduced, which is the major problem a civil engineer have to face. Reinforcement can meet the requirements of strength and durability and extend the service life of the buildings. [...]
Research on Durability of HFRP and Bonding Behavior between HFRP and Concrete
At present, some research work on the durability of Fiber Reinforced Plastic (FRP)materials and FRP reinforcement structure has been carried out by domestic and foreign scholars, but the researchers are on a single durability of FRP composite materials research, and research on Hybrid Fiber Reinforced Plastic(HFRP) is relatively small, considerable research is quite weak,just started. [...]