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A platform for research: civil engineering, architecture and urbanism
Sea sand recycled coarse aggregate high-performance concrete and preparation method thereof
The invention relates to the technical field of sea sand concrete, and discloses sea sand recycled coarse aggregate high-performance concrete and a preparation method thereof.The preparation method comprises the steps that firstly, sludge is pretreated into sludge particles; mixing cement, fly ash, silicon powder, ground shell powder and sludge particles, adding desalted sea sand or river sand and steel fibers, uniformly stirring, adding water and a polycarboxylic acid high-performance water reducing agent in the room-temperature stirring process, and finally adding the modified recycled coarse aggregate or common coarse aggregate to obtain the sea sand recycled coarse aggregate high-performance cement mortar. And filling the cement paste into a model, transferring into a standard curing chamber, and curing by using hot water to obtain the sea sand recycled coarse aggregate high-performance concrete. The sludge is fully utilized, and the energy consumption is reduced; a polycarboxylic acid high-performance water reducing agent is used, so that water resources are saved; the recycled coarse aggregate is used, so that the waste of waste building materials is reduced; sea sand resources are used for replacing river sand, and durability and corrosion resistance are high; the sludge partially replaces the cement, so that the resource utilization of the sludge is realized.
本发明涉及海砂混凝土技术领域，公开了一种海砂再生粗骨料高性能混凝土及其制备方法，制备方法包括：首先将污泥预处理为污泥颗粒；将水泥、粉煤灰、硅粉、磨细贝壳粉与污泥颗粒混合后，加入淡化海砂或河砂与钢纤维，搅拌均匀，在室温搅拌过程中加入水和聚羧酸高性能减水剂，最后加入改性再生粗骨料或普通粗骨料，得到海砂再生粗骨料高性能水泥砂浆；将水泥浆装入模型并移入标准养护室，使用热水固化得到海砂再生粗骨料高性能混凝土。本发明充分利用污泥，降低能耗；使用聚羧酸高性能减水剂，节约水资源；使用再生粗骨料作，减少废弃建筑材料的浪费；使用海砂资源代替河砂，耐久性与抗腐蚀性能强；将污泥部分代替水泥，实现了污泥的资源化利用。
Sea sand recycled coarse aggregate high-performance concrete and preparation method thereof
The invention relates to the technical field of sea sand concrete, and discloses sea sand recycled coarse aggregate high-performance concrete and a preparation method thereof.The preparation method comprises the steps that firstly, sludge is pretreated into sludge particles; mixing cement, fly ash, silicon powder, ground shell powder and sludge particles, adding desalted sea sand or river sand and steel fibers, uniformly stirring, adding water and a polycarboxylic acid high-performance water reducing agent in the room-temperature stirring process, and finally adding the modified recycled coarse aggregate or common coarse aggregate to obtain the sea sand recycled coarse aggregate high-performance cement mortar. And filling the cement paste into a model, transferring into a standard curing chamber, and curing by using hot water to obtain the sea sand recycled coarse aggregate high-performance concrete. The sludge is fully utilized, and the energy consumption is reduced; a polycarboxylic acid high-performance water reducing agent is used, so that water resources are saved; the recycled coarse aggregate is used, so that the waste of waste building materials is reduced; sea sand resources are used for replacing river sand, and durability and corrosion resistance are high; the sludge partially replaces the cement, so that the resource utilization of the sludge is realized.
本发明涉及海砂混凝土技术领域，公开了一种海砂再生粗骨料高性能混凝土及其制备方法，制备方法包括：首先将污泥预处理为污泥颗粒；将水泥、粉煤灰、硅粉、磨细贝壳粉与污泥颗粒混合后，加入淡化海砂或河砂与钢纤维，搅拌均匀，在室温搅拌过程中加入水和聚羧酸高性能减水剂，最后加入改性再生粗骨料或普通粗骨料，得到海砂再生粗骨料高性能水泥砂浆；将水泥浆装入模型并移入标准养护室，使用热水固化得到海砂再生粗骨料高性能混凝土。本发明充分利用污泥，降低能耗；使用聚羧酸高性能减水剂，节约水资源；使用再生粗骨料作，减少废弃建筑材料的浪费；使用海砂资源代替河砂，耐久性与抗腐蚀性能强；将污泥部分代替水泥，实现了污泥的资源化利用。
Sea sand recycled coarse aggregate high-performance concrete and preparation method thereof
一种海砂再生粗骨料高性能混凝土及其制备方法
SHEN XINXIN (author) / CUI JIANSHENG (author) / WANG XINYU (author) / LU YANGYANG (author) / LI TIANYU (author) / NI LEI (author) / FAN CHUNYU (author) / WANG LINGLING (author) / LI TIAN (author) / CHEN CHENG (author)
2023-07-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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