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Super-early-strength water-reducing concrete and preparation method thereof
The invention belongs to the technical field of concrete, and particularly relates to super-early-strength water-reducing concrete and a preparation method thereof. The early-strength Portland cementconcrete comprises the following components: early-strength Portland cement, an AE water reducing agent, coarse aggregate, fine aggregate and water. The concrete has the unit water quantity of 180 kg/m<3>, the unit cement quantity of 300-450 kg/m<3>, the unit fine aggregate quantity of 699-853 kg/m<3>, the unit coarse aggregate quantity of 947-979 kg/m<3>, the AE water reducing dosage of 2.5-4.32kg/m<3>, the water cement ratio (w/c) of 40-60% and the sand ratio of 42.8-48.5%. The concrete provided by the invention has better properties such as age, cost, slump, change of air quantity, strength and the like, and the problem of cracks caused by early strength cement is improved to a certain extent.
本发明属于混凝土技术领域，特别涉及一种超早强减水混凝土及其制备方法。公开了包括以下组分，早强硅酸盐水泥、AE减水剂、粗骨料、细骨料和水；所述混凝土的单位水量180kg/m3，单位水泥量为300～450kg/m3，单位细骨料量为699～853kg/m3，单位粗骨料量为947～979kg/m3，AE减水剂量为2.5～4.32kg/m3，所述混凝土的水灰比(w/c)为40‑60％，砂率为42.8～48.5％。本发明提供的混凝土龄期、成本、塌落度、空气量的变化、强度表现等性质表现较佳，早强水泥所造成的裂缝问题得到了一定的改善。
Super-early-strength water-reducing concrete and preparation method thereof
The invention belongs to the technical field of concrete, and particularly relates to super-early-strength water-reducing concrete and a preparation method thereof. The early-strength Portland cementconcrete comprises the following components: early-strength Portland cement, an AE water reducing agent, coarse aggregate, fine aggregate and water. The concrete has the unit water quantity of 180 kg/m<3>, the unit cement quantity of 300-450 kg/m<3>, the unit fine aggregate quantity of 699-853 kg/m<3>, the unit coarse aggregate quantity of 947-979 kg/m<3>, the AE water reducing dosage of 2.5-4.32kg/m<3>, the water cement ratio (w/c) of 40-60% and the sand ratio of 42.8-48.5%. The concrete provided by the invention has better properties such as age, cost, slump, change of air quantity, strength and the like, and the problem of cracks caused by early strength cement is improved to a certain extent.
本发明属于混凝土技术领域，特别涉及一种超早强减水混凝土及其制备方法。公开了包括以下组分，早强硅酸盐水泥、AE减水剂、粗骨料、细骨料和水；所述混凝土的单位水量180kg/m3，单位水泥量为300～450kg/m3，单位细骨料量为699～853kg/m3，单位粗骨料量为947～979kg/m3，AE减水剂量为2.5～4.32kg/m3，所述混凝土的水灰比(w/c)为40‑60％，砂率为42.8～48.5％。本发明提供的混凝土龄期、成本、塌落度、空气量的变化、强度表现等性质表现较佳，早强水泥所造成的裂缝问题得到了一定的改善。
Super-early-strength water-reducing concrete and preparation method thereof
一种超早强减水混凝土及其制备方法
SUZUKI KAZUO (author) / ZHANG JUNRAN (author)
2021-01-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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