Glass fiber composite cement and preparation method thereof

Abstract

The invention discloses glass fiber composite cement and a preparation method thereof. The glass fiber composite cement uses alkali-resistant glass fibers containing 12.5 wt% to 14 wt% of ZrO2 as rawmaterials, the alkali-resistant glass fibers containing 12.5 wt% to 14 wt% of ZrO2 as raw materials is prepared by modifying isophthalene neopentyl glycol type unsaturated polyester resin, dehydroacetic acid and 1-3 propylene glycol in silane coupling agent KH 570, and the glass fiber composite cement is prepared from the obtained alkali-resistant glass fibers as the raw materials and cement clinker, industrial waste residue, fly ash, slag and related auxiliary agents. The preparation method comprises the following steps of: firstly, calcining the industrial waste residue, slag and fly ash athigh temperature, then adding the cement clinker under the condition of medium temperature, and continuously calcining to obtain semi-finished cement; and then, mixing the semi-finished cement with the alkali-resistant glass fiber, the auxiliary agent and water at high speed, drying by hot air, and pulverizing into powder to obtain the finished cement. The cement prepared by the invention has lowalkalinity, high mechanical strength and strong stability and weatherability.

Description

technical field [0001] The invention relates to the technical field of cement preparation technology, in particular to a glass fiber composite cement and a preparation method thereof. Background technique [0002] As one of the three basic materials in the construction industry, cement is the most used building material. It is widely used and used in a large amount. As a powdery hydraulic inorganic cementitious material, cement is usually made by adding water and stirring. Mortar or Concrete is widely used in infrastructure projects such as construction engineering, traffic engineering, and offshore platforms. However, ordinary concrete has defects such as high brittleness, low compressive strength, and cement hydration is often accompanied by volume shrinkage, which is very likely to cause concrete cracks, freeze-thaw effects, chlorine-sulfur erosion, or other types of corrosion, which significantly reduces In addition, the cement manufacturing industry, as a high-pollut...

AI Technical Summary

Problems solved by technology

However, glass fiber reinforced cement itself also has defects, that is, the high alkaline environment of the cement mortar matrix will corrode the glass fiber, making its mechanical properties gradually deteriorate over time, and eventually aging and becoming a brittle material

However, even if alkali-resistant glass fibers are used to prepare glass fiber reinforced cement, aging problems still occur, which limits the scope of use of glass fiber reinforced cement, and it is very unsuitable to use construction waste as raw materials under the existing technological conditions. preparation