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A platform for research: civil engineering, architecture and urbanism
High-toughness anti-cracking concrete and preparation method thereof
The invention relates to the technical field of building materials, and discloses high-toughness anti-cracking concrete and a preparation method thereof. The concrete is prepared from the following raw materials in parts by weight: 70 to 90 parts of cement, 120 to 160 parts of fine sand, 200 to 250 parts of stone, 25 to 35 parts of composite hydrogel, 10 to 15 parts of calcium carbonate, 10 to 15 parts of slag powder, 1 to 2 parts of a water reducing agent, 40 to 60 parts of deionized water and 4 to 6 parts of polyvinyl acetate, the composite hydrogel is added into the concrete to serve as a reinforcing body, so that the toughness and the cracking resistance of a concrete matrix are improved; the composite hydrogel forms a cross-linked network structure in a matrix, so that crack tip stress can be effectively dispersed, the toughness of the concrete is further improved, cement mineral crystals in the concrete are tightly combined, and the anti-cracking performance is further improved; and the modified halloysite nanotube serves as a stress concentration point in the composite hydrogel, so that the toughness of the matrix is improved.
本发明涉及建筑材料技术领域，公开了一种高韧防开裂混凝土及其制备方法。本发明的混凝土，包括以下重量份的原料：水泥70‑90份，细沙120‑160份，石子200‑250份，复合水凝胶25‑35份，碳酸钙10‑15份，矿渣粉10‑15份，减水剂1‑2份，去离子水40‑60份，聚乙酸乙烯酯4‑6份；混凝土中通过添加复合水凝胶作为增强体，提高了混凝土基体的韧性和抗开裂性能；复合水凝胶在基体中形成交联网状结构能有效分散裂纹尖端应力，进而提高了混凝土的韧性，并且使混凝土中的水泥矿物晶体紧密结合，进而提高抗开裂性能；而改性埃洛石纳米管在复合水凝胶中充当应力集中点，进而提高基体的韧性。
High-toughness anti-cracking concrete and preparation method thereof
The invention relates to the technical field of building materials, and discloses high-toughness anti-cracking concrete and a preparation method thereof. The concrete is prepared from the following raw materials in parts by weight: 70 to 90 parts of cement, 120 to 160 parts of fine sand, 200 to 250 parts of stone, 25 to 35 parts of composite hydrogel, 10 to 15 parts of calcium carbonate, 10 to 15 parts of slag powder, 1 to 2 parts of a water reducing agent, 40 to 60 parts of deionized water and 4 to 6 parts of polyvinyl acetate, the composite hydrogel is added into the concrete to serve as a reinforcing body, so that the toughness and the cracking resistance of a concrete matrix are improved; the composite hydrogel forms a cross-linked network structure in a matrix, so that crack tip stress can be effectively dispersed, the toughness of the concrete is further improved, cement mineral crystals in the concrete are tightly combined, and the anti-cracking performance is further improved; and the modified halloysite nanotube serves as a stress concentration point in the composite hydrogel, so that the toughness of the matrix is improved.
本发明涉及建筑材料技术领域，公开了一种高韧防开裂混凝土及其制备方法。本发明的混凝土，包括以下重量份的原料：水泥70‑90份，细沙120‑160份，石子200‑250份，复合水凝胶25‑35份，碳酸钙10‑15份，矿渣粉10‑15份，减水剂1‑2份，去离子水40‑60份，聚乙酸乙烯酯4‑6份；混凝土中通过添加复合水凝胶作为增强体，提高了混凝土基体的韧性和抗开裂性能；复合水凝胶在基体中形成交联网状结构能有效分散裂纹尖端应力，进而提高了混凝土的韧性，并且使混凝土中的水泥矿物晶体紧密结合，进而提高抗开裂性能；而改性埃洛石纳米管在复合水凝胶中充当应力集中点，进而提高基体的韧性。
High-toughness anti-cracking concrete and preparation method thereof
一种高韧防开裂混凝土及其制备方法
WANG WEI (author) / ZHONG QIANGEN (author) / ZHOU YONG (author) / LI TONGTONG (author) / WU XIANG (author)
2024-10-29
Patent
Electronic Resource
Chinese
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