Building concrete
A technology for concrete and construction, applied in the field of concrete for construction, can solve the problems of reducing the bearing capacity of concrete structures, shortening the service life, low compressive strength, etc., achieving high compressive strength and internal bonding strength, prolonging service life, The effect of improving the carrying capacity
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Embodiment example 1
[0020] A kind of concrete for construction, in parts by mass, comprising:
[0021] 15 parts of cement, 25 parts of sea sand, 45 parts of gravel, 0.1 parts of water reducer, 2 parts of fly ash, 2 parts of calcined hydrotalcite, 0.5 parts of male gum, 4 parts of polycarboxylate Acid, 0.4 parts of slaked lime, 0.02 parts of polyvinyl alcohol, 1 part of silicon dioxide particles, 0.1 parts of alcohol amine rust inhibitor.
[0022] The preparation method of calcined hydrotalcite comprises the following steps: the hydrotalcite is rinsed with distilled water, dried at 100-120°C for 10-12 hours, and then calcined at 500-600°C for 5-6 hours.
[0023] Among them, the alcohol amine rust inhibitor is triethanolamine.
[0024] Among them, the fly ash is high-aluminum fly ash with an alumina content of 38%.
[0025] Wherein, the water reducer is polycarboxylate high performance water reducer.
[0026] Among them, the sea sand is pretreated by desalination, and the method of desalination ...
Embodiment example 2
[0031] A kind of concrete for construction, in parts by mass, comprising:
[0032] 20 parts of cement, 30 parts of sea sand, 50 parts of gravel, 0.2 parts of water reducer, 5 parts of fly ash, 5 parts of calcined hydrotalcite, 1.5 parts of male gum, 6 parts of polycarboxylate acid, 0.6 parts of slaked lime, 0.04 parts of polyvinyl alcohol, 2 parts of silicon dioxide particles, and 0.2 parts of alcohol amine rust inhibitor.
[0033] Among them, the alcohol amine rust inhibitor is dimethylethanolamine.
[0034] Among them, the fly ash is high-aluminum fly ash with an alumina content of 40%.
[0035] Wherein, the water reducer is polycarboxylate high performance water reducer.
[0036] Wherein, the sea sand is pretreated by desalination. The method of desalination pretreatment includes the following steps: placing the sea sand in a sea sand desalination tank, injecting fresh water, and backwashing the sea sand by a water pump arranged at the bottom of the desalination tank. fo...
Embodiment example 3
[0041] A kind of concrete for construction, in parts by mass, comprising:
[0042] 18 parts of cement, 28 parts of sea sand, 48 parts of gravel, 0.15 parts of water reducer, 3 parts of fly ash, 3 parts of calcined hydrotalcite, 1 part of male gum, 5 parts of polycarboxylate acid, 0.5 parts of slaked lime, 0.03 parts of polyvinyl alcohol, 1.5 parts of silicon dioxide particles, and 0.15 parts of alcohol amine rust inhibitor.
[0043] Among them, the alcohol amine rust inhibitor is aminomethyl propanol.
[0044] Among them, the fly ash is high-alumina fly ash with an alumina content of 45%.
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Abstract
Description
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