Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to the field of concrete, and particularly discloses recycled aggregate concrete and a preparation method thereof.The recycled aggregate concrete is prepared from cement, fly ash, modified recycled coarse aggregate, recycled fine aggregate, river sand, water, a silane coupling agent, a water reducing agent, a tackifier and epoxy resin; the modified recycled coarse aggregate is prepared by soaking a recycled coarse aggregate in a calcium hydroxide solution and then carbonizing, and the preparation method comprises the following steps: mixing: mixing the modified recycled coarse aggregate with a recycled fine aggregate, adding fly ash and river sand, and then adding water and cement to obtain a mixture; and adding an additive: adding epoxy resin into the mixture, mixing, adding a silane coupling agent, adding a water reducing agent and a tackifier, and finally adding organic carboxylic acid to obtain the anti-crack concrete. The method has the advantage of improving the crack resistance of the recycled aggregate concrete.
本申请涉及混凝土领域，具体公开了一种再生骨料混凝土及其制备方法，一种再生骨料混凝土包括水泥、粉煤灰、改性再生粗骨料份、再生细骨料、河砂、水、硅烷偶联剂、减水剂、增粘剂、环氧树脂；改性再生粗骨料是由再生粗骨料在氢氧化钙溶液浸泡后碳化制得，其制备方法包括如下步骤：混合：将改性再生粗骨料与再生细骨料混合，加入粉煤灰和河砂,再加入水和水泥，得到混合物；加外加剂：混合物中加入环氧树脂混合，再加入硅烷偶联剂，其后加入减水剂和增粘剂，最后加入有机羧酸，得抗裂混凝土。本申请的具有改善再生骨料混凝土的抗裂性优点。
The invention relates to the field of concrete, and particularly discloses recycled aggregate concrete and a preparation method thereof.The recycled aggregate concrete is prepared from cement, fly ash, modified recycled coarse aggregate, recycled fine aggregate, river sand, water, a silane coupling agent, a water reducing agent, a tackifier and epoxy resin; the modified recycled coarse aggregate is prepared by soaking a recycled coarse aggregate in a calcium hydroxide solution and then carbonizing, and the preparation method comprises the following steps: mixing: mixing the modified recycled coarse aggregate with a recycled fine aggregate, adding fly ash and river sand, and then adding water and cement to obtain a mixture; and adding an additive: adding epoxy resin into the mixture, mixing, adding a silane coupling agent, adding a water reducing agent and a tackifier, and finally adding organic carboxylic acid to obtain the anti-crack concrete. The method has the advantage of improving the crack resistance of the recycled aggregate concrete.
本申请涉及混凝土领域，具体公开了一种再生骨料混凝土及其制备方法，一种再生骨料混凝土包括水泥、粉煤灰、改性再生粗骨料份、再生细骨料、河砂、水、硅烷偶联剂、减水剂、增粘剂、环氧树脂；改性再生粗骨料是由再生粗骨料在氢氧化钙溶液浸泡后碳化制得，其制备方法包括如下步骤：混合：将改性再生粗骨料与再生细骨料混合，加入粉煤灰和河砂,再加入水和水泥，得到混合物；加外加剂：混合物中加入环氧树脂混合，再加入硅烷偶联剂，其后加入减水剂和增粘剂，最后加入有机羧酸，得抗裂混凝土。本申请的具有改善再生骨料混凝土的抗裂性优点。
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