A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to the technical field of concrete, and particularly discloses high-crack-resistance concrete and a preparation method thereof.The high-crack-resistance concrete is prepared from, by weight, 45-105 parts of cement, 400-500 parts of coarse aggregate, 200-400 parts of fine aggregate, 150-250 parts of water, 6-18 parts of polycarboxylate superplasticizer, 5-15 parts of calcium-magnesium composite expanding agent and 100-150 parts of fly ash, 60-100 parts of a rubber powder modified multi-size mixed fiber material and 40-60 parts of an adhesive; the adhesive is an ethylene-vinyl acetate latex powder modified epoxy resin emulsion. The maximum value of the 7d compressive strength of the concrete is 34.85 MPa, and the maximum value of the 28d compressive strength of the concrete is 62.09 MPa; the tensile strength of the material is 6.99 MPa at most in 28 d, the minimum value of the maximum temperature difference is 18.3 DEG C, no crack occurs, and the material has high mechanical properties.
本申请涉及混凝土技术领域，具体公开一种高抗裂性混凝土及其制备方法，其中，一种高抗裂性混凝土，包括以下按重量份计的原料：水泥45‑105份，粗集料400‑500份，细集料200‑400份，水150‑250份，聚羧酸减水剂6‑18份，钙镁复合膨胀剂5‑15份，粉煤灰100‑150份，橡胶粉改性多尺寸混合纤维材料60‑100份，胶粘剂40‑60份；所述胶粘剂为乙烯‑醋酸乙烯酯乳胶粉改性环氧树脂乳液。本申请得到的混凝土7d抗压强度和28d抗压强度最大值分别为34.85MPa和62.09MPa；28d劈裂抗压强度最高为6.99MPa，最大温差的最小值为18.3℃，且均无裂纹出现，具有较高的力学性能。
The invention relates to the technical field of concrete, and particularly discloses high-crack-resistance concrete and a preparation method thereof.The high-crack-resistance concrete is prepared from, by weight, 45-105 parts of cement, 400-500 parts of coarse aggregate, 200-400 parts of fine aggregate, 150-250 parts of water, 6-18 parts of polycarboxylate superplasticizer, 5-15 parts of calcium-magnesium composite expanding agent and 100-150 parts of fly ash, 60-100 parts of a rubber powder modified multi-size mixed fiber material and 40-60 parts of an adhesive; the adhesive is an ethylene-vinyl acetate latex powder modified epoxy resin emulsion. The maximum value of the 7d compressive strength of the concrete is 34.85 MPa, and the maximum value of the 28d compressive strength of the concrete is 62.09 MPa; the tensile strength of the material is 6.99 MPa at most in 28 d, the minimum value of the maximum temperature difference is 18.3 DEG C, no crack occurs, and the material has high mechanical properties.
本申请涉及混凝土技术领域，具体公开一种高抗裂性混凝土及其制备方法，其中，一种高抗裂性混凝土，包括以下按重量份计的原料：水泥45‑105份，粗集料400‑500份，细集料200‑400份，水150‑250份，聚羧酸减水剂6‑18份，钙镁复合膨胀剂5‑15份，粉煤灰100‑150份，橡胶粉改性多尺寸混合纤维材料60‑100份，胶粘剂40‑60份；所述胶粘剂为乙烯‑醋酸乙烯酯乳胶粉改性环氧树脂乳液。本申请得到的混凝土7d抗压强度和28d抗压强度最大值分别为34.85MPa和62.09MPa；28d劈裂抗压强度最高为6.99MPa，最大温差的最小值为18.3℃，且均无裂纹出现，具有较高的力学性能。
High-crack-resistance concrete and preparation method thereof
| European Patent Office | 2024
Concrete pole with high crack resistance and preparation method thereof
| European Patent Office | 2024
High-crack-resistance ultrahigh-performance concrete and preparation method thereof
| European Patent Office | 2024
High-crack-resistance and radiation-resistance mass concrete and preparation method thereof
| European Patent Office | 2024
| European Patent Office | 2024