Concrete admixture and application thereof
A concrete admixture and concrete technology, which is applied in the field of construction and civil engineering, can solve problems such as electrokinetic potential drop, concrete slump loss, and effective concentration reduction of water reducing agent, and achieve the effect of improving the compressive strength ratio
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Embodiment 1
[0030] A concrete admixture is composed of the following components by weight:
[0031] 2-hydroxysuccinic acid 28.5 parts
[0032] Polyethylene glycol 200 15.2 parts
[0033] 7.5 parts of monoglyceride stearate
[0034] Ethylene bis stearamide 10.1 parts
[0035] Sodium dodecyl sulfonate 9.6 parts
[0036] 1.5 parts of bentonite;
[0037] The preparation method is as follows: weigh the raw material components, then add water with a mass of 16% of the concrete admixture, mix the concrete admixture evenly, and leave it for 5-8 minutes to obtain the product;
[0038] The prepared admixture is added in a proportion of 0.6% of the cement quality. The cement is the concrete inspection benchmark cement, the sand fineness modulus is 2.6, and the stone is the crushed stone of the second grade, and then it is inspected with reference to the relevant standards of GB8076-2008. The result is as follows:
[0039] The water reduction rate reached 40.1%, within 2 hours, the change in sl...
Embodiment 2
[0041] A concrete admixture is composed of the following components by weight:
[0042] 2-hydroxysuccinic acid 35.6 parts
[0043] Polyethylene glycol 200 15.2 parts
[0044] Stearic acid monoglyceride 5.6 parts
[0045] Ethylene bis stearamide 12.8 parts
[0046] Sodium dodecyl sulfonate 7.3 parts
[0047] 2.1 parts of bentonite;
[0048] Preparation method is identical with embodiment 1;
[0049] The prepared admixture is added in a proportion of 0.6% of the cement quality. The cement is the concrete inspection benchmark cement, the sand fineness modulus is 2.6, and the stone is the crushed stone of the second grade, and then it is inspected with reference to the relevant standards of GB8076-2008. The result is as follows:
[0050] The water reduction rate reached 40.5%, within 2 hours, the change in slump was 4.95mm, the bleeding ratio was 49%, the 1d compressive strength ratio was 179%, the 3d compressive strength ratio was 165%, and the 7d compressive strength ratio...
Embodiment 3
[0052] A concrete admixture is composed of the following components by weight:
[0053] 2-hydroxysuccinic acid 32.6 parts
[0054] Polyethylene glycol 200 18.7 parts
[0055] Stearic acid monoglyceride 5.9 parts
[0056] Ethylene bis stearamide 12.2 parts
[0057] Sodium dodecylsulfonate 9.0 parts
[0058] 1.9 parts of bentonite;
[0059] Preparation method is identical with embodiment 1;
[0060] The prepared admixture is added in a proportion of 0.6% of the cement quality. The cement is the concrete inspection benchmark cement, the sand fineness modulus is 2.6, and the stone is the crushed stone of the second grade, and then it is inspected with reference to the relevant standards of GB8076-2008. The result is as follows:
[0061] The water reduction rate reached 43.6%, within 2 hours, the change in slump was 4.12mm, the bleeding ratio was 43%, the 1d compressive strength ratio was 183%, the 3d compressive strength ratio was 170%, and the 7d compressive strength ratio ...
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