Method for measuring elastic modulus of lightweight aggregate
An elastic modulus, lightweight aggregate technology, applied in the intersection of building materials and micromechanics, can solve the problems of incomplete lightweight aggregates, large discrete intervals, unable to fully reflect the comprehensive information of lightweight aggregate particles, etc. Possibility of error, effect of guaranteed integrity
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Embodiment 1
[0048] The bulk density is 600kg / m 3 Determination of Elastic Modulus of Clay Ceramsite
[0049] Preparation of raw materials:
[0050] Light aggregate: particle size 0-4mm, bulk density 600kg / m 3 , apparent dry density ρ a =927kg / m 3 .
[0051] Cement: Ordinary Portland cement with strength grade 52.5, relative density 3.1, specific surface area 3590cm 2 / g.
[0052] Water reducer: polycarboxylate high-efficiency water reducer (Fusle Structuro 311), pH value 5.5, dry particle ratio 25%, cement dosage 0.2-5%.
[0053] Fine aggregate: river sand, particle size 0-2mm, relative density 2.5.
[0054] A method for measuring the elastic modulus of light aggregates, the steps are:
[0055] 1) Preparation of specimens and mechanical tests to determine mechanical parameters
[0056] (1) Determine the mix ratio: when the volume ratio of light aggregate is V a =25%; 37.5%; 45%, the following table determines the mix ratio of each component material of concrete (Table 1). In ad...
Embodiment 2
[0090] The bulk density is 560kg / m 3 Determination of elastic modulus of clay ceramsite.
[0091] Preparation of raw materials:
[0092] Light aggregate: particle size 4-10mm, bulk density 560kg / m 3 , apparent dry density ρ a =921kg / m 3 .
[0093] Cement: Ordinary Portland cement with strength grade 52.5, relative density 3.1, specific surface area 3590cm 2 / g.
[0094] Fine aggregate: river sand, particle size 0-2mm, relative density 2.5.
[0095] A method for measuring the elastic modulus of light aggregates, the steps are:
[0096] 1) Preparation of specimens and mechanical tests to determine mechanical parameters
[0097] (1) Determine the mix ratio: when the volume ratio of light aggregate is V a = 25%; 37.5%; 45%, the following table determines the mix ratio of each component of concrete (Table 3). In addition, when the volume ratio of light aggregate is 0, it means cement mortar, which is not listed separately.
[0098] Table 3. Mixing ratio of cement mortar ...
Embodiment 3
[0116] The bulk density is 490kg / m 3 Elastic modulus determination of shale ceramsite.
[0117] Preparation of raw materials:
[0118] Light aggregate: particle size 4-10mm, bulk density 490kg / m 3 , apparent dry density ρ a =900kg / m 3 .
[0119] Cement: Ordinary Portland cement with strength grade 52.5, relative density 3.1, specific surface area 3590cm 2 / g.
[0120] Water reducer: polycarboxylate high-efficiency water reducer (Fusle Structuro 311), pH value 5.5, dry particle ratio 25%, cement dosage 0.2-5%,
[0121] Silica fume: relative density 2.1, specific surface area 1820cm 2 / g.
[0122] Fine aggregate: river sand, particle size 0-2mm, relative density 2.5.
[0123] A method for measuring the elastic modulus of light aggregates, the steps are:
[0124] 1) Preparation of specimens and mechanical tests to determine mechanical parameters
[0125] (a) Determine the mix ratio: when the volume ratio of light aggregate is V a = 25%; 37.5%; 45%, the following table...
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