Self-stress and self-leveling grouting material for equipment
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A technology of self-leveling and grouting materials, applied in the field of building materials
Inactive Publication Date: 2015-08-26
LINYI UNIVERSITY
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[0005] The purpose of the present invention is to provide a grouting material for self-stressed self-leveling equipment, which solves the coordination problem of early expansion, mid-term expansion and late expansion of the grouting material
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Embodiment 1
[0030] Embodiment 1: a self-stress self-leveling equipment grouting material, the proportion of each component is as follows (mass percentage):
[0031] The mass percent composition of main materials is:
[0032] Ordinary 42.5 grade Portland cement 35%
[0033] Mineral admixture 18.5%
[0034] River sand 45%
[0035] Steel Fiber 1.5%
[0036] The mass percent of each component of the auxiliary material in the cementitious material is:
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Abstract
The invention provides a self-stress and self-leveling grouting material for equipment. The grouting material consists of main materials and auxiliary materials, wherein the main materials comprise 30-45% of cement, 10-25% of mineral admixture and 35-45% of river sand, and the mineral admixture consists of pulverized coal ash, mineral powder and river sand powder which are in the mass ratio of (0.6-1.0): (1.6-2.0): (0.6-1.0); and the auxiliary materials comprise an expansion agent composition, a water retention thickener, an early strength agent and a powdered polycarboxylic acid water reducing agent and contain the ingredients in percentage by mass based on the sum of mass of cement and mineral admixture sequentially: 4%-8% of the expansion agent composition, 0.01%-0.05% of the water retention thickener, 2%-4% of the early strength agent and 0.2%-0.4% of the powdered polycarboxylic acid water reducing agent, wherein the expansion agent composition consists of rice hull ash, MgO and a UEA expansion agent which are in the mass ratio of (0.6-1.0): (0.6-1.0): (1.5-2.0), the water retention thickener is sodium alginate, and the early strength agent consists of gypsum powder, sodium carbonate and silica fume which are in the mass ratio of (0.8-1.0): (0.5-1.0): (0.6-1.0).
Description
technical field [0001] The invention relates to a grouting material for self-stress and self-leveling equipment, which belongs to the field of building materials. Background technique [0002] Cement-based self-leveling equipment grouting material is a kind of dry mixture with reasonable gradation produced by factory production of raw materials such as cement, aggregate (or no aggregate), admixture and mineral admixture. After adding water and mixing evenly, it has the properties of pourable fluidity, micro-swelling, high early and late strength, and no bleeding. The grouting material is mainly used for: anchoring of anchor bolts, emergency repair of airstrips, fixing of nuclear power equipment, reinforcement of road and bridge engineering, machine base, steel structure and foundation opening, secondary grouting of equipment foundation, planting steel bars, concrete structures Reinforcement and reconstruction, crack treatment of old concrete structures, installation of mech...
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