Anti-explosion high-temperature-resistant concrete and preparation method of same
A technology of concrete and mixed materials, applied in the field of concrete, can solve the problems of high brittleness, poor impact resistance, and low bending strength of concrete, and achieve the effects of good explosion resistance, high compression resistance, and simple and feasible preparation methods
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Embodiment 1
[0020] The anti-explosion and high-temperature anti-explosion concrete of this embodiment is uniformly compounded by various components. The components by mass percentage are: 37.1% Portland cement (Jidong Dunshi 52.5R cement, specific surface area 450m 2 / kg, apparent density 3.14g / cm 3 ), aggregates include river sand and silica sand, of which 10.4% are quartz river sand (density 2.71g / cm 3 , fineness modulus 2.4), 28.3% silica sand (all particle sizes are less than 0.5mm, density 2.65g / cm 3 ), 9.4% mixed material (SiO 2 The mass ratio accounts for 68%, CaO accounts for 12%, SO 3 Accounting for 17%), 8.3% of water, the powder in the superplasticizer (polycarboxylate high-performance superplasticizer, solid content of 24%) is 0.7% of the total mass of the cementitious material, steel fiber (density 7.80g / cm 3 , diameter 0.22mm, length 15mm, tensile strength 2850MPa) volume content is 2%, organic fiber (polypropylene fiber (PP fiber), melting point 173 ℃, length 15.0mm, de...
Embodiment 2
[0025] The anti-explosion and high-temperature anti-explosion concrete of this embodiment is uniformly compounded by various components. Each component by mass percentage is: 57% ordinary portland cement (42.5 cement, specific surface area 430m 2 / kg, apparent density 3.12g / cm 3 ), 26.8% silica sand aggregate (40% with particle size less than 0.15mm, density 2.87g / cm 3 ), 4.1% mixed material (SiO 2 The mass ratio accounts for 40%, CaO accounts for 24%, SO 3 Accounting for 34%), 10.9% of water, water reducer (polycarboxylate high-performance water reducer powder) accounts for 2% of the total mass of cementitious materials, carbon fiber (tensile strength up to 5000MPA, length 20mm, diameter 0.15 mm, density 1.8g / cm 3 ) volume content is 1.0%, organic fiber (polypropylene fiber, melting point 165 ℃, length 20.0mm, density 0.90g / cm 3 ) volume dosage is 0.3%, and the silicone defoamer dosage is 0.25% of the total mass of the gelling material. The raw materials of the concrete...
Embodiment 3
[0030] The anti-explosion and high-temperature anti-explosion concrete of this embodiment is uniformly compounded by various components. Each component by mass percentage is: 30.9% Portland cement (42.5 cement, specific surface area 435m 2 / kg, apparent density 3.12g / cm 3 ), aggregates include lime sand and silica sand, of which 32.6% lime sand (density 2.50g / cm 3 , the particle size range is 0.15-3.0mm), 15.5% silica sand aggregate (60% of the particle size is less than 0.15mm, and the density is 2.65g / cm 3 ), 5.0% mixed material (SiO 2The mass ratio accounts for 54%, CaO accounts for 16%, SO 3 Accounting for 25%), 6.2% of water, water reducer (naphthalene series high-performance water reducer, solid content 28%) powder accounts for 0.73% of the total mass of cementitious material, steel fiber (tensile strength up to 3200MPA, length 24mm , diameter 0.18mm, density 7.8g / cm 3 ) volume content is 3%, organic fiber (polypropylene fiber, melting point 165 ℃, length 24.0mm, de...
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