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A platform for research: civil engineering, architecture and urbanism
Method for preparing low-shrinkage high-performance concrete from traditional Chinese medicine residues of taiilings
The invention provides a method for preparing low-shrinkage high-performance concrete from traditional Chinese medicine residues of tailings. The method comprises the following steps: S1, crushing recycled aggregate concrete, shaping crushed particles, washing and drying to obtain coarse aggregate; drying the vanadium-titanium-iron tailings and screening and obtaining fine aggregate; S2, cleaningthe traditional Chinese medicine residues, drying and carbonizing; calcining the dolomite waste residues at high temperature; mixing and grinding the two to obtain an additive; S3, crushing the aerated concrete waste and then drying and crushing; drying and grinding phosphogypsum; mixing the two materials with an additive, and then adding sugarcane fiber to obtain a composite cementing material; S4, mixing the coarse aggregate, the fine aggregate and the composite cementing material to obtain a mixture; S5, adding a proper amount of water into the mixture, and refrigerating the filtered bean curd wastewater to obtain mixed slurry; and pouring the mixed slurry, demolding, and carrying out standard curing to obtain the low-shrinkage high-performance concrete product. The prepared concrete has excellent compressive strength, carbonization depth and low shrinkage performance.
本发明提出一种利用尾矿中药渣制备低收缩高性能混凝土的方法，包括以下步骤：S1、将再生骨料混凝土破碎，碎粒整形，冲洗、烘干得到粗骨料；将钒钛铁尾矿烘干并筛分，得到细骨料；S2、将中药渣洗净、烘干后炭化；白云石废渣高温煅烧；二者混合粉磨，得到添加剂；S3、加气混凝土废料破碎，然后烘干、粉磨；磷石膏烘干粉磨；将二者与添加剂混合，再加入甘蔗纤维，得到复合胶凝材料；S4、将粗骨料、细骨料和复合胶凝材料混合，得到混合料；S5、将混合料中加入适量的水、冷藏过滤后的豆腐废水，得到混合料浆；将混合料浆浇注、脱模并标准养护，得到低收缩高性能混凝土制品。制备得到的混凝土具有优良的抗压强度、碳化深度和低收缩性能。
Method for preparing low-shrinkage high-performance concrete from traditional Chinese medicine residues of taiilings
The invention provides a method for preparing low-shrinkage high-performance concrete from traditional Chinese medicine residues of tailings. The method comprises the following steps: S1, crushing recycled aggregate concrete, shaping crushed particles, washing and drying to obtain coarse aggregate; drying the vanadium-titanium-iron tailings and screening and obtaining fine aggregate; S2, cleaningthe traditional Chinese medicine residues, drying and carbonizing; calcining the dolomite waste residues at high temperature; mixing and grinding the two to obtain an additive; S3, crushing the aerated concrete waste and then drying and crushing; drying and grinding phosphogypsum; mixing the two materials with an additive, and then adding sugarcane fiber to obtain a composite cementing material; S4, mixing the coarse aggregate, the fine aggregate and the composite cementing material to obtain a mixture; S5, adding a proper amount of water into the mixture, and refrigerating the filtered bean curd wastewater to obtain mixed slurry; and pouring the mixed slurry, demolding, and carrying out standard curing to obtain the low-shrinkage high-performance concrete product. The prepared concrete has excellent compressive strength, carbonization depth and low shrinkage performance.
本发明提出一种利用尾矿中药渣制备低收缩高性能混凝土的方法，包括以下步骤：S1、将再生骨料混凝土破碎，碎粒整形，冲洗、烘干得到粗骨料；将钒钛铁尾矿烘干并筛分，得到细骨料；S2、将中药渣洗净、烘干后炭化；白云石废渣高温煅烧；二者混合粉磨，得到添加剂；S3、加气混凝土废料破碎，然后烘干、粉磨；磷石膏烘干粉磨；将二者与添加剂混合，再加入甘蔗纤维，得到复合胶凝材料；S4、将粗骨料、细骨料和复合胶凝材料混合，得到混合料；S5、将混合料中加入适量的水、冷藏过滤后的豆腐废水，得到混合料浆；将混合料浆浇注、脱模并标准养护，得到低收缩高性能混凝土制品。制备得到的混凝土具有优良的抗压强度、碳化深度和低收缩性能。
Method for preparing low-shrinkage high-performance concrete from traditional Chinese medicine residues of taiilings
一种利用尾矿和中药渣制备低收缩高性能混凝土的方法
WANG CHANGLONG (author) / YE PENGFEI (author) / ZHANG YAPENG (author) / ZHANG KAIFAN (author) / GAO YING (author) / LI JUN (author) / HUO ZEKUN (author) / YIN YIZHEN (author) / REN ZHENZHEN (author) / WANG SHAOXI (author)
2020-09-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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