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A platform for research: civil engineering, architecture and urbanism
Prestressed concrete and preparation process thereof
The invention relates to the technical field of concrete, and particularly discloses prestressed concrete and a preparation process thereof. The prestressed concrete is prepared from the following components in parts by weight: 280-320 parts of cement, 60-80 parts of coal ash, 40-60 parts of mineral powder, 160-200 parts of water, 700-900 parts of fine aggregate, 800-1000 parts of coarse aggregate, 1-3 parts of a polycarboxylate superplasticizer, 5-8 parts of a binder and 2-3 parts of a shrinkage reducing agent; wherein the binder comprises at least one of polyacrylonitrile fibers and palm fibers; the preparation method comprises the following steps: uniformly mixing water, fly ash and fine aggregate, and adding coarse aggregate to obtain a first mixture; adding cement into the first mixture, and mixing to obtain a second mixture; adding a shrinkage reducing agent, hydrotalcite, an expanding agent, a binding agent, a water reducing agent and a reinforcing agent into the second mixture,mixing, and discharging to obtain the prestressed concrete. The prestressed concrete has excellent bonding performance.
本申请涉及混凝土技术领域，具体公开了一种预应力混凝土及其制备工艺，该预应力混凝土包括以下重量份的原料：水泥280‑320份、粉煤灰60‑80份、矿粉40‑60份、水160‑200份、细骨料700‑900份、粗骨料800‑1000份、聚羧酸减水剂1‑3份、粘结剂5‑8份、减缩剂2‑3份；粘结剂包括聚丙烯腈纤维、棕榈纤维中的至少一种；其制备方法为：将水、粉煤灰以及细骨料混合均匀后加入粗骨料得到第一混合物；在第一混合物中加入水泥，混合后得到第二混合物；在第二混合物中加入减缩剂、水滑石、膨胀剂、粘结剂、减水剂和增强剂进行混合，混合后出料得到预应力混凝土；该预应力混凝土具有优异的粘结性能。
Prestressed concrete and preparation process thereof
The invention relates to the technical field of concrete, and particularly discloses prestressed concrete and a preparation process thereof. The prestressed concrete is prepared from the following components in parts by weight: 280-320 parts of cement, 60-80 parts of coal ash, 40-60 parts of mineral powder, 160-200 parts of water, 700-900 parts of fine aggregate, 800-1000 parts of coarse aggregate, 1-3 parts of a polycarboxylate superplasticizer, 5-8 parts of a binder and 2-3 parts of a shrinkage reducing agent; wherein the binder comprises at least one of polyacrylonitrile fibers and palm fibers; the preparation method comprises the following steps: uniformly mixing water, fly ash and fine aggregate, and adding coarse aggregate to obtain a first mixture; adding cement into the first mixture, and mixing to obtain a second mixture; adding a shrinkage reducing agent, hydrotalcite, an expanding agent, a binding agent, a water reducing agent and a reinforcing agent into the second mixture,mixing, and discharging to obtain the prestressed concrete. The prestressed concrete has excellent bonding performance.
本申请涉及混凝土技术领域，具体公开了一种预应力混凝土及其制备工艺，该预应力混凝土包括以下重量份的原料：水泥280‑320份、粉煤灰60‑80份、矿粉40‑60份、水160‑200份、细骨料700‑900份、粗骨料800‑1000份、聚羧酸减水剂1‑3份、粘结剂5‑8份、减缩剂2‑3份；粘结剂包括聚丙烯腈纤维、棕榈纤维中的至少一种；其制备方法为：将水、粉煤灰以及细骨料混合均匀后加入粗骨料得到第一混合物；在第一混合物中加入水泥，混合后得到第二混合物；在第二混合物中加入减缩剂、水滑石、膨胀剂、粘结剂、减水剂和增强剂进行混合，混合后出料得到预应力混凝土；该预应力混凝土具有优异的粘结性能。
Prestressed concrete and preparation process thereof
一种预应力混凝土及其制备工艺
LIU ZHENYI (author) / ZHAN QIANG (author) / CHEN CHENG (author)
2021-03-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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