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A platform for research: civil engineering, architecture and urbanism
Low-alkalinity seawater and sea sand concrete and preparation method thereof
The invention provides low-alkalinity seawater and sea sand concrete and a preparation method thereof. The low-alkalinity seawater and sea sand concrete is prepared from 380-570 parts of a low-alkalinity cementing material; wherein the low-alkali cementing material is prepared from the following components in parts by weight: 220 to 350 parts of cement, 150 to 200 parts of high-activity residue soil and 10 to 20 parts of anti-corrosion and anti-permeability admixture, and the cement is PO42.5 cement; the sea sand is fine sand, and the maximum particle size of coarse aggregate in the sea sand is 15 mm; the pebbles are broken stones, and the particle size of the pebbles is in single-particle-grade grading with the particle size of 5-15mm; 200 to 240 parts of seawater; 4-6 parts of a water reducing agent, wherein the water reducing agent is a polycarboxylic acid water reducing agent; the density of the anti-collapse agent is 1 to 1.2 g/cm < 3 >, the solid content of the anti-collapse agent is 35 to 43, and the pH value of the anti-collapse agent is 5 to 6. The problem of resource exhaustion can be solved, performance degradation of the fiber bars in a high-alkalinity pore solution can be delayed, and the alkalinity of the concrete can be reduced.
本申请提供了一种低碱度海水海砂混凝土及其制备方法，通过低碱胶凝材料380～570份；其中，低碱胶凝材料包括水泥220～350份、高活性渣土150～200份和抗腐蚀抗渗性掺合料10～20份，水泥为PO42.5水泥；海砂350～420份，海砂为细砂，海砂中粗骨料的粒径最大为15mm；石子1100～1250份，石子为碎石，石子的粒径为5‑15mm的单粒级级配；海水200～240份；减水剂4～6份，减水剂为聚羧酸减水剂；保塌剂0.5～1.2份，保塌剂的密度为1‑1.2g/cm3，固含量为35‑43，pH值为5‑6。本申请可解决资源枯竭的问题，延缓纤维筋在高碱性孔溶液的性能退化，可降低混凝土碱度。
Low-alkalinity seawater and sea sand concrete and preparation method thereof
The invention provides low-alkalinity seawater and sea sand concrete and a preparation method thereof. The low-alkalinity seawater and sea sand concrete is prepared from 380-570 parts of a low-alkalinity cementing material; wherein the low-alkali cementing material is prepared from the following components in parts by weight: 220 to 350 parts of cement, 150 to 200 parts of high-activity residue soil and 10 to 20 parts of anti-corrosion and anti-permeability admixture, and the cement is PO42.5 cement; the sea sand is fine sand, and the maximum particle size of coarse aggregate in the sea sand is 15 mm; the pebbles are broken stones, and the particle size of the pebbles is in single-particle-grade grading with the particle size of 5-15mm; 200 to 240 parts of seawater; 4-6 parts of a water reducing agent, wherein the water reducing agent is a polycarboxylic acid water reducing agent; the density of the anti-collapse agent is 1 to 1.2 g/cm < 3 >, the solid content of the anti-collapse agent is 35 to 43, and the pH value of the anti-collapse agent is 5 to 6. The problem of resource exhaustion can be solved, performance degradation of the fiber bars in a high-alkalinity pore solution can be delayed, and the alkalinity of the concrete can be reduced.
本申请提供了一种低碱度海水海砂混凝土及其制备方法，通过低碱胶凝材料380～570份；其中，低碱胶凝材料包括水泥220～350份、高活性渣土150～200份和抗腐蚀抗渗性掺合料10～20份，水泥为PO42.5水泥；海砂350～420份，海砂为细砂，海砂中粗骨料的粒径最大为15mm；石子1100～1250份，石子为碎石，石子的粒径为5‑15mm的单粒级级配；海水200～240份；减水剂4～6份，减水剂为聚羧酸减水剂；保塌剂0.5～1.2份，保塌剂的密度为1‑1.2g/cm3，固含量为35‑43，pH值为5‑6。本申请可解决资源枯竭的问题，延缓纤维筋在高碱性孔溶液的性能退化，可降低混凝土碱度。
Low-alkalinity seawater and sea sand concrete and preparation method thereof
一种低碱度海水海砂混凝土及其制备方法
CAO HAILIN (author) / GUO SHUHUI (author) / WENG LUQIAN (author) / HOU SHUANGSHUANG (author)
2023-04-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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