Light high-strength silicate ceramsite concrete
A ceramsite concrete and silicate technology, applied in the field of concrete, can solve the problems of low cylinder compressive strength, and achieve the effects of small strength dispersion, uniform distribution and excellent performance
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[0039] combine figure 1 , based on Table 1, the preparation method of lightweight high-strength ceramsite concrete of the present invention comprises the steps:
[0040] Step 1: Pre-wet the ceramsite
[0041] According to the mix ratio, pre-absorb the weighed ceramsite for more than 1 hour, and make the ceramsite in a saturated surface dry state before use, which will not affect the workability of the freshly mixed concrete mixture.
[0042] Step 2: Prepare the ceramsite concrete mixture
[0043] Weigh the remaining components according to the mix ratio. Add saturated surface dry ceramsite, silica fume, fly ash, river sand, 1 / 5 water to the mixer in turn and stir for 60-90 seconds; then add the mixture of cement, water and water reducer to the mixer and stir for 90- 120 seconds to complete the preparation of the ceramsite concrete mixture.
[0044] The third step: forming ceramsite concrete test block
[0045] Put the uniformly stirred ceramsite concrete mixture into the ...
Embodiment 1
[0065] Strength grade LC70, density less than 2000kg / m 3 The composition per cubic meter of lightweight high-strength silicate ceramsite concrete is shown in Table 3.
[0066] Table 3 LC70 concrete mix design
[0067]
[0068] The preparation process of ceramsite concrete includes the following parts:
[0069] Step 1: Pre-wet the ceramsite
[0070] According to the mixing ratio, weigh 768kg of ceramsite and pre-absorb water for more than 1 hour, and make the ceramsite in a saturated surface dry state before use.
[0071] Step 2: Prepare the ceramsite concrete mixture
[0072] Weigh the remaining components according to the mix ratio. Add saturated surface dry ceramsite, 32kg silica fume, 98kg fly ash, 698kg river sand, 27kg water to the mixer in turn and stir for 60-90 seconds; then add 320kg cement, 108kg water and 4.2kg water reducer to the mixer The mixture is stirred for 90 to 120 seconds to complete the preparation of the ceramsite concrete mixture.
[0073] The ...
Embodiment 2
[0080] Strength grade LC70, density less than 2000kg / m 3 The composition per cubic meter of lightweight high-strength silicate ceramsite concrete is shown in Table 4.
[0081] Table 4 LC70 concrete mix design
[0082]
[0083] The preparation process of ceramsite concrete includes the following parts:
[0084] Step 1: Pre-wet the ceramsite
[0085] According to the mixing ratio, weigh 788kg of ceramsite and pre-absorb water for more than 1 hour, and make the ceramsite in a saturated surface dry state before use.
[0086] Step 2: Prepare the ceramsite concrete mixture
[0087] Weigh the remaining components according to the mix ratio. Add saturated surface dry ceramsite, 20kg silica fume, 50kg fly ash, 674kg river sand, 27kg water to the mixer in turn and stir for 60-90 seconds; then add 380kg cement, 108kg water and 4kg water reducer to the mixer The liquid is stirred for 90-120 seconds to complete the preparation of the ceramsite concrete mixture.
[0088] The third ...
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