Application of Amorphous Calcium Aluminate in Low Temperature Grouting Material
Application of Amorphous Calcium Aluminate in Low Temperature Grouting Material
By acacem.com
Original articles, reprinting is strictly prohobited.
Aug. 17, 2013
Amorphous calcium aluminate, grouting material, low temperature, calcium aluminate cement, calcium sulphoaluminate cement, lithium carbonate, microsilica, polycarboxylate superplasticizer
The grouting material is made of high-strength materials as aggregate, cement as binder, supplemented by high fluidity, micro-expansion, anti-segregation and other substances. It adds a certain amount of water at the construction site, and it can be used after stirring evenly.
The grouting material has the characteristics of good self-flowing property, rapid hardening, early strength, high strength, no shrinkage, and slight expansion; non-toxic, harmless, non-aging, no pollution to water quality and surrounding environment, good self-tightness, and anti-rust. In terms of construction, it has the advantages of reliable quality, reduced cost, shortened construction period and convenient use.
The grouting material is mainly used for: anchoring of anchor bolts, emergency repair of airstrip, fixing of nuclear power equipment, reinforcement of road and bridge engineering, machine base, steel structure and foundation cup, secondary grouting of equipment foundation, planting steel bars, concrete structure reinforcement and reconstruction, crack treatment of old concrete structures, installation of mechanical and electrical equipment, installation of rails and steel structures, sealing of static piles, building reinforcement, enlargement of beam and column sections, thickening of wall structures, and repair of water leakage and seepage. Subsidence grouting of various foundation projects and various emergency repair projects, etc.
Low-temperature grouting material is a grouting material used in special construction environments such as winter. Under the condition of sub-zero ambient temperature, due to the characteristics of cement, its hydration activity is affected by low temperature and cannot be used normally. Therefore, low-temperature grouting material came into being.
The main materials of low temperature grouting material are as follows:
Calcium aluminate cement, calcium sulphoaluminate cement, lithium carbonate, silica fume, polycarboxylate superplasticizer
In order to strengthen the hydration activity of cement under low temperature conditions in winter, adding amorphous calcium aluminate on this basis will achieve twice the result with half the effort. Amorphous calcium aluminate can promote the rapid setting of cement under low temperature conditions, and at the same time, it can increase the hydration activity of cement, so that the strength and toughness of cement under low temperature conditions can be rapidly improved; in addition, due to its excellent reactivity can make up for the cracks of the concrete structure in the low temperature environment, so that the service life of the overall concrete structure is greatly increased.
