Air bubbles in concrete: Why and How to deal with it?

The bubbles in concrete above 100μm are called large harmful bubbles, 100 ~ 50μm are called harmful bubbles, 50 ~ 20μm are called low harmful bubbles or harmless bubbles, and those below 20μm are called beneficial bubbles.…

What should be paid attention to when using polycarboxylate superplasticizer for C30 and below concrete?

Polycarboxylate superplasticizer has more advantages than traditional naphthalene and aliphatic superplasticizer in mixing high strength grade concrete, but its advantages of high water reduction cannot be brought into full play when the strength is…

Effect of Limestone Powder in Machine-made Sand on PCE powder

Natural river sand has been exhausted after decades of large-scale mining, concrete production enterprises began to use machine-made sand as fine aggregate on a large scale.…

What is Zinc Oxide Used for?

ZnO is used as reinforcing agent and active agent in rubber or cable industry, as colorant and filler of white rubber, and as vulcanizing agent in neoprene rubber.…

The content of chloride ion should be controlled when compounding polycarboxylic acid high performance superplasticizer

In order to improve the early strength of concrete, some manufacturers will add triethanolamine, calcium chloride and industrial salt to the superplasticizer, especially in winter or prefabricated component factories and cement products factories tha…

Nanomaterials Uses

Nanomaterials are used in many industries, from health care and cosmetics to environmental protection and air purification.…

Effect of cement temperature on the performance of pce powder

If the compatibility of polycarboxylate superplasticizer and cement is not good, the concrete mixture is prone to some problems, such as segregation, bleeding, greater slump loss, shorter setting time and so on, so that the concrete mixture can not b…

How to produce titanium nitride?

The first method is direct nitridation of titanium powder or TiH2.…

Preparation method of tungsten boride

Tungsten boride is a black powder with the following physical properties:molecular formula WB2,with metallic conductivity,soluble in aqua regia.…

Where are concrete admixtures used?

At first, concrete additives were used only to save cement. With the development of construction technology, admixture has become the main measure to improve the performance of concrete.…

What is WS2 coating?

Tungsten disulfide is an extremely smooth dry film lubrication coating.…

Why is polycarboxylate superplasticizer more suitable for modern concrete?

The wide application of mineral admixtures mainly derived from industrial solid wastes diversifies the composition of cementitious materials, which is one of the main characteristics of modern concrete.…