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A platform for research: civil engineering, architecture and urbanism
Recycled aggregate concrete and preparation method thereof
The invention discloses recycled aggregate concrete and a preparation method thereof. The concrete is prepared from the following raw materials in parts by weight: 90 to 110 parts of cement, 180 to 210 parts of gravel, 90 to 100 parts of sand, 60 to 90 parts of modified recycled aggregate and 40 to 50 parts of water, 2-3 parts of an additive; the modified recycled aggregate is prepared by the following method: step 1, taking recycled aggregate, slag powder and silica sol in a mass ratio of 100: (15-25): (3-6); uniformly mixing silica sol and slag powder, and adding the recycled aggregate for blending and coating to obtain premixed recycled aggregate; and 2, heating the premixed recycled aggregate to 950-1250 DEG C, calcining for 15-30 minutes, and cooling to obtain the modified recycled aggregate. The problems of low impermeability and low strength performance of the recycled aggregate concrete can be effectively solved.
本申请公开了一种再生骨料混凝土及其制备方法，该混凝土包括以下重量份的原料：水泥：90～110份，碎石：180～210份，砂子：90～100份，改性再生骨料：60～90份，水：40～50份；外加剂：2～3份；所述改性再生骨料通过如下方法制得：步骤1：取质量比为100：15～25：3～6的再生骨料、矿渣粉与硅溶胶；将硅溶胶与矿渣粉混合均匀，加入再生骨料进行共混包覆，得到预混再生骨料；步骤2：将预混再生骨料加热升温至950～1250℃，煅烧15～30min后冷却处理，得到改性再生骨料。本申请能够有效解决再生骨料混凝土抗渗性能和强度性能低的问题。
Recycled aggregate concrete and preparation method thereof
The invention discloses recycled aggregate concrete and a preparation method thereof. The concrete is prepared from the following raw materials in parts by weight: 90 to 110 parts of cement, 180 to 210 parts of gravel, 90 to 100 parts of sand, 60 to 90 parts of modified recycled aggregate and 40 to 50 parts of water, 2-3 parts of an additive; the modified recycled aggregate is prepared by the following method: step 1, taking recycled aggregate, slag powder and silica sol in a mass ratio of 100: (15-25): (3-6); uniformly mixing silica sol and slag powder, and adding the recycled aggregate for blending and coating to obtain premixed recycled aggregate; and 2, heating the premixed recycled aggregate to 950-1250 DEG C, calcining for 15-30 minutes, and cooling to obtain the modified recycled aggregate. The problems of low impermeability and low strength performance of the recycled aggregate concrete can be effectively solved.
本申请公开了一种再生骨料混凝土及其制备方法，该混凝土包括以下重量份的原料：水泥：90～110份，碎石：180～210份，砂子：90～100份，改性再生骨料：60～90份，水：40～50份；外加剂：2～3份；所述改性再生骨料通过如下方法制得：步骤1：取质量比为100：15～25：3～6的再生骨料、矿渣粉与硅溶胶；将硅溶胶与矿渣粉混合均匀，加入再生骨料进行共混包覆，得到预混再生骨料；步骤2：将预混再生骨料加热升温至950～1250℃，煅烧15～30min后冷却处理，得到改性再生骨料。本申请能够有效解决再生骨料混凝土抗渗性能和强度性能低的问题。
Recycled aggregate concrete and preparation method thereof
一种再生骨料混凝土及其制备方法
ZHONG ZHIGANG (author) / ZHANG XIANBIN (author)
2023-05-16
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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