Sulfate attack is an environmental issue for concrete structure exposed to aggressive environment contains sulfate ions.The interaction of cementitious materials with sulfate solutions leads to a reac
The diffusion properties of free chloride and total chloride in concrete with different water-binder ratio and different volume of fly ash were studied by natural diffusion method in our laboratory.Th
The durability in terms of resistivity and transport properties of new eco-efficient mortars was investigated in this paper.The mortars were performed with eco-efficient blended cements that incorpora
It is widely known that the production of Portland cement consumes considerable energy and at the same time contributes a large volume of CO2 to the atmosphere.It is estimated as being responsible for
By the Fukushima-Daiichi accident, radio-Cs was released to the environments.Some parts are deposited on concrete.In order to decontaminate, the nature of radio-Cs contamination should be clarified.Co
In this study, the influence of the micelles prepared by triblock copolymers on the properties of fresh and hardened cement paste was investigated.In fresh cement paste, the micelles adsorbed on cemen
This paper investigated the damage process of mortars that were immersed in solutions containing 3000 mg SO42-/1 or 33800 mg SO42-/1, which were used to simulate sulfate concentrations in the field an
OPC mortar and concretes can be attacked by sulphate solutions giving rise to different decaying processes,related with the formation of ettringite, gypsum, thaumasite etc.At present deterioration due
随着全球定位系统(global positioning system,GPS) 的向量测量单元(phasor measurement unit,PMU) 的出现,使得在电力系统运用广域继电保护算法成为可能,而故障元件的定位在广域保护系统中起着关键的作用,它可以在主保护拒动、断路器失灵的情况下,快速定位故障,可以防止传统后备保护动作时间长、停电范围大等问题。
In this paper, the factors having effects on the penetration behavior of Cl, Cs, K and Na are discussed from the viewpoint of the interactions between the aqueous species and hydrates.It was shown tha