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Blog2018-09-18T14:55:29+08:00

Early performance of cement-based grouting material with silica fume.

Early performance of cement-based grouting material with silica fume.              Keywords: grouting material; silica fume; fluidity; early performance Through adding different dosage of silica fume, studied the early performance of cement-based grout. Experiment result showed that mixing certain amount of silica fume can improve the grout fluidity and improve the grout surface state, thereby [...]

By |November 13th, 2018|Categories: Blog|0 Comments

conventional grade-c20-c25-c30-concrete mix ratio

The concrete mix ratio refers to the proportional relationship between the constituent materials in the concrete.  First of all, we need to know what substances are contained in concrete. The four materials of water, cement, sand, and gravel are the most basic components of concrete. Secondly, we need to choose according to the purpose of the concrete. conventional grade-c20-c25-c30-concrete [...]

By |November 1st, 2018|Categories: Blog|0 Comments

silica fume concrete seminar report

silica fume concrete seminar report with the continuous development of high-performance concrete technology, the use of mineral admixtures at home and abroad to improve concrete performance. Europe first applied silica fume to concrete, and it has been used for 30 years in the commercial application of silica fume in the United States. ▪ Basic characteristic of silica fume ▪  Spherical [...]

By |October 23rd, 2018|Categories: Blog|0 Comments

disadvantages of silica fume in concrete

What are the main problems in the use of silica fume and what are the disadvantages? Silica fume needs to be paid attention to in actual use: it should not be used in the case of high wind speed, which is easy to cause dust. When using encrypted silica fume, the stirring time is extended by about 15 seconds [...]

By |October 22nd, 2018|Categories: Blog|0 Comments

silica fume advantages and disadvantages

Today, silica fume is widely used in the construction industry because its strengths and weaknesses are accepted. What are the advantages and disadvantages of silica fume? First, let's understand the advantages of silica fume. Silica fume particles have an average diameter of less than 1 micron. Silica fume is a grey superfine powder with a density of 2.2g/cm³.  Generally [...]

By |October 22nd, 2018|Categories: Blog|0 Comments

Typical shotcrete mix design

shotcrete mix design is divided into wet mix and gunite to dry mix.This article focuses on the target mix design of shotcrete. The bulk density of wet sprayed concrete can be 2200-2300 kg/m 3, The weight ratio of cement to sandstone is preferably 1. 0: 3. 5 to 1. 0: 4. 0, the water-cement ratio is preferably 0.42 to [...]

By |October 19th, 2018|Categories: Blog|0 Comments

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