Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Winter application micro-expansive concrete and preparation method thereof
The invention relates to the field of building materials, and particularly discloses micro-expansive concrete applied in winter and a preparation method thereof. The micro-expansive concrete applied in winter comprises the following components in parts by weight: 275-300 parts of cement, 30-40 parts of mineral powder, 30-50 parts of fly ash, 735-750 parts of sand, 1060-1110 parts of stones, 8-9 parts of an additive, 40-45 parts of an expanding agent, 3-6 parts of chitosan fibers and 145-190 parts of water, wherein the additive comprises titanium dioxide, modified polyvinyl alcohol fibers and an anti-freezing agent in a mass ratio of 5: (2-3): (1-2). The winter-applied micro-expansive concrete has the advantages that the number of cracks generated by the concrete due to temperature difference is reduced, the crack resistance is high, and no gap is generated between the concrete and a steel pipe when the concrete is cured under the closed condition in the steel pipe concrete.
本申请涉及建筑材料领域，具体公开了一种冬施微膨胀混凝土及其制备方法。冬施微膨胀混凝土包括以下以重量份数表示的组分：水泥275‑300份、矿粉30‑40份、粉煤灰30‑50份、砂子735‑750份、石子1060‑1110份、外加剂8‑9份、膨胀剂40‑45份、壳聚糖纤维3‑6份、水145‑190份，所述外加剂包括质量比为5:2‑3:1‑2份二氧化钛、改性聚乙烯醇纤维和防冻剂。本申请的冬施微膨胀混凝土具有减少混凝土由于温差产生的裂纹数量，抗裂性强，在钢管混凝土中封闭条件下养护时，不会与钢管产生缝隙的优点。
Winter application micro-expansive concrete and preparation method thereof
The invention relates to the field of building materials, and particularly discloses micro-expansive concrete applied in winter and a preparation method thereof. The micro-expansive concrete applied in winter comprises the following components in parts by weight: 275-300 parts of cement, 30-40 parts of mineral powder, 30-50 parts of fly ash, 735-750 parts of sand, 1060-1110 parts of stones, 8-9 parts of an additive, 40-45 parts of an expanding agent, 3-6 parts of chitosan fibers and 145-190 parts of water, wherein the additive comprises titanium dioxide, modified polyvinyl alcohol fibers and an anti-freezing agent in a mass ratio of 5: (2-3): (1-2). The winter-applied micro-expansive concrete has the advantages that the number of cracks generated by the concrete due to temperature difference is reduced, the crack resistance is high, and no gap is generated between the concrete and a steel pipe when the concrete is cured under the closed condition in the steel pipe concrete.
本申请涉及建筑材料领域，具体公开了一种冬施微膨胀混凝土及其制备方法。冬施微膨胀混凝土包括以下以重量份数表示的组分：水泥275‑300份、矿粉30‑40份、粉煤灰30‑50份、砂子735‑750份、石子1060‑1110份、外加剂8‑9份、膨胀剂40‑45份、壳聚糖纤维3‑6份、水145‑190份，所述外加剂包括质量比为5:2‑3:1‑2份二氧化钛、改性聚乙烯醇纤维和防冻剂。本申请的冬施微膨胀混凝土具有减少混凝土由于温差产生的裂纹数量，抗裂性强，在钢管混凝土中封闭条件下养护时，不会与钢管产生缝隙的优点。
Winter application micro-expansive concrete and preparation method thereof
一种冬施微膨胀混凝土及其制备方法
08.07.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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