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Environment-friendly concrete and preparation method thereof
The invention relates to the field of concrete, and particularly discloses environment-friendly concrete and a preparation method thereof.The environment-friendly concrete is prepared from slag cement, modified waste concrete, polyvinyl alcohol fibers, a magnesium oxide anti-cracking agent, quartz sand, gravel, fly ash, a polycarboxylate superplasticizer and water; the modified waste concrete is prepared by the following steps: heating waste concrete, cooling with water, crushing, and soaking in a water glass solution for 2-3 hours to obtain the modified waste concrete. The highest breaking strength of the environment-friendly concrete is 6.6 MPa, and the strength of the environment-friendly concrete is improved; the lowest elastic modulus, slump and dry density are 12 GPa, 15 cm and 618 kg/m < 3 > respectively, and the high-strength concrete has high flexibility and workability; and the longest crack occurrence time of the environment-friendly concrete is 201 days, so that the crack resistance of the environment-friendly concrete is improved.
本申请涉及混凝土领域，具体公开了一种环保型混凝土及其制备方法，一种环保型混凝土，其包括如下原料：矿渣水泥、改性废旧混凝土、聚乙烯醇纤维、氧化镁抗裂剂、石英砂、碎石、粉煤灰、聚羧酸减水剂、水；所述改性废旧混凝土通过如下方法制备得到：将废旧混凝土加热，水冷，粉碎，浸泡至水玻璃溶液中2‑3h，得到改性废旧混凝土。本申请的环保型混凝土的抗折强度最高为6.6MPa，提高了环保型混凝土的强度；弹性模量、坍落度和干密度最低分别为12GPa、15cm和618kg/m3，具有较高的柔韧性和和易性；且环保型混凝土出现裂缝的时间最长为201天，提高了环保型混凝土的抗裂性。
Environment-friendly concrete and preparation method thereof
The invention relates to the field of concrete, and particularly discloses environment-friendly concrete and a preparation method thereof.The environment-friendly concrete is prepared from slag cement, modified waste concrete, polyvinyl alcohol fibers, a magnesium oxide anti-cracking agent, quartz sand, gravel, fly ash, a polycarboxylate superplasticizer and water; the modified waste concrete is prepared by the following steps: heating waste concrete, cooling with water, crushing, and soaking in a water glass solution for 2-3 hours to obtain the modified waste concrete. The highest breaking strength of the environment-friendly concrete is 6.6 MPa, and the strength of the environment-friendly concrete is improved; the lowest elastic modulus, slump and dry density are 12 GPa, 15 cm and 618 kg/m < 3 > respectively, and the high-strength concrete has high flexibility and workability; and the longest crack occurrence time of the environment-friendly concrete is 201 days, so that the crack resistance of the environment-friendly concrete is improved.
本申请涉及混凝土领域，具体公开了一种环保型混凝土及其制备方法，一种环保型混凝土，其包括如下原料：矿渣水泥、改性废旧混凝土、聚乙烯醇纤维、氧化镁抗裂剂、石英砂、碎石、粉煤灰、聚羧酸减水剂、水；所述改性废旧混凝土通过如下方法制备得到：将废旧混凝土加热，水冷，粉碎，浸泡至水玻璃溶液中2‑3h，得到改性废旧混凝土。本申请的环保型混凝土的抗折强度最高为6.6MPa，提高了环保型混凝土的强度；弹性模量、坍落度和干密度最低分别为12GPa、15cm和618kg/m3，具有较高的柔韧性和和易性；且环保型混凝土出现裂缝的时间最长为201天，提高了环保型混凝土的抗裂性。
Environment-friendly concrete and preparation method thereof
一种环保型混凝土及其制备方法
WENG JIE (author) / JIN KEYI (author) / XIANG ZUOTIE (author)
2022-11-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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