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Ceramsite surface modified lightweight concrete and preparation method thereof
The invention provides ceramsite surface modified lightweight concrete and a preparation method thereof, and the ceramsite surface modified lightweight concrete comprises the following components according to the mix proportion (kg/m < 3 >) of per cubic meter of concrete: 400-500 parts of cement; 150 to 170 parts of mixing water; 600-700 parts of modified ceramsite with the particle size of 5-20 mm; 400-500 parts of pottery sand with the particle size of 3-5 mm and the bulk density of 920 kg/m < 3 >; 50 to 60 parts of fly ash which is class C II-grade fly ash; the bulk density of the silica fume is 854kg/m < 3 >; the admixture is a polycarboxylic acid type efficient water reducing agent, the water reducing rate of the polycarboxylic acid type efficient water reducing agent is 23-27%, and the bleeding rate within 3 hours is not greater than 5%. The ceramsite is improved through surface treatment, on the premise that the stacking density is not greatly changed, the cylinder compressive strength of the ceramsite can be improved by 50%, meanwhile, the water absorption rate of the ceramsite is reduced and is about 30% of that before treatment, the prepared lightweight concrete has the characteristics of light weight and high strength, and the comprehensive performance of the concrete is improved.
本发明提供一种陶粒表面改性轻质混凝土及其制备方法，陶粒表面改性轻质混凝土按照单方混凝土配合比(kg/m3)计，包括以下各组分：水泥，400‑500份；拌合水，150‑170份；改性陶粒，600‑700份，粒径5～20mm；陶砂，400‑500份，粒径为3～5mm，堆积密度为920kg/m3；粉煤灰，50‑60份，为C类II级粉煤灰；硅灰，0‑40份，堆积密度854kg/m3；外加剂，5.5～6.5，为聚羧酸系高效减水剂，其减水率为23％～27％，3小时泌水率不大于5％。本发明通过表面处理改善陶粒，在控制堆积密度不发生较大改变的前提下，能够提升陶粒50％的筒压强度，同时降低陶粒的吸水率，大约为处理前的30％左右，制备得到的轻质混凝土具有轻质高强的特性，提升了混凝土的综合性能。
Ceramsite surface modified lightweight concrete and preparation method thereof
The invention provides ceramsite surface modified lightweight concrete and a preparation method thereof, and the ceramsite surface modified lightweight concrete comprises the following components according to the mix proportion (kg/m < 3 >) of per cubic meter of concrete: 400-500 parts of cement; 150 to 170 parts of mixing water; 600-700 parts of modified ceramsite with the particle size of 5-20 mm; 400-500 parts of pottery sand with the particle size of 3-5 mm and the bulk density of 920 kg/m < 3 >; 50 to 60 parts of fly ash which is class C II-grade fly ash; the bulk density of the silica fume is 854kg/m < 3 >; the admixture is a polycarboxylic acid type efficient water reducing agent, the water reducing rate of the polycarboxylic acid type efficient water reducing agent is 23-27%, and the bleeding rate within 3 hours is not greater than 5%. The ceramsite is improved through surface treatment, on the premise that the stacking density is not greatly changed, the cylinder compressive strength of the ceramsite can be improved by 50%, meanwhile, the water absorption rate of the ceramsite is reduced and is about 30% of that before treatment, the prepared lightweight concrete has the characteristics of light weight and high strength, and the comprehensive performance of the concrete is improved.
本发明提供一种陶粒表面改性轻质混凝土及其制备方法，陶粒表面改性轻质混凝土按照单方混凝土配合比(kg/m3)计，包括以下各组分：水泥，400‑500份；拌合水，150‑170份；改性陶粒，600‑700份，粒径5～20mm；陶砂，400‑500份，粒径为3～5mm，堆积密度为920kg/m3；粉煤灰，50‑60份，为C类II级粉煤灰；硅灰，0‑40份，堆积密度854kg/m3；外加剂，5.5～6.5，为聚羧酸系高效减水剂，其减水率为23％～27％，3小时泌水率不大于5％。本发明通过表面处理改善陶粒，在控制堆积密度不发生较大改变的前提下，能够提升陶粒50％的筒压强度，同时降低陶粒的吸水率，大约为处理前的30％左右，制备得到的轻质混凝土具有轻质高强的特性，提升了混凝土的综合性能。
Ceramsite surface modified lightweight concrete and preparation method thereof
一种陶粒表面改性轻质混凝土及其制备方法
WANG CHAO (author) / CHEN YI-CHUN (author) / ZHU MINTAO (author) / OUYANG YUNPENG (author) / DAI ZHIHUI (author)
2022-04-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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