A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Durable tubular pile concrete and tubular pile
The invention provides durable tubular pile concrete and a tubular pile. The concrete is prepared from the following raw materials in parts by weight: 120 to 140 parts of cement, 240 to 300 parts of sand, 440 to 500 parts of stone, 1.5 to 2 parts of water reducing agent solution, 0.3 to 0.5 part of fatty alcohol sulfate air entraining agent, 30 to 40 parts of fly ash, 10 to 15 parts of hydrophobic modified molecular sieve and 50 to 90 parts of water. The water reducing agent is formed by polymerizing unsaturated carboxylic acid, unsaturated sodium sulfonate, unsaturated thioether and (methyl) allyl polyoxyethylene ether. Hydroxyl groups on the surface and orifices are eliminated through hydrophobic modification of the molecular sieve, the water content of pores in the molecular sieve is reduced, bubbles which can be compressed and contain embedded free water are provided, expansion pressure and seepage force generated by freezing are relieved, the use amount of an air entraining agent is reduced, and the freezing resistance is improved in cooperation with the air entraining agent. The water reducing agent has an early strength effect, reaches or exceeds the freezing critical strength of the concrete as soon as possible, and improves the freezing resistance.
本发明提供一种耐久性管桩混凝土及所述管桩，所述混凝土包括如下重量份的原料：120‑140份水泥、240‑300份砂、440‑500份石、1.5‑2份减水剂溶液、0.3‑0.5份脂肪醇硫酸盐类引气剂、30‑40份粉煤灰、10‑15份疏水改性分子筛、50‑90份水；减水剂由不饱和羧酸、不饱和磺酸钠、不饱和硫醚、（甲基）烯丙基聚氧乙烯醚聚合而成。通过对分子筛疏水改性消除表面和孔口的羟基，降低分子筛内部孔洞水含量，提供可压缩和容纳自由水嵌入的气泡，缓解结冰产生的膨胀压力和渗透力，降低引气剂用量和协同引气剂提高抗冻性的作用；减水剂具有早强的作用，尽快达到或超过混凝土的受冻临界强度，提高抗冻性。
Durable tubular pile concrete and tubular pile
The invention provides durable tubular pile concrete and a tubular pile. The concrete is prepared from the following raw materials in parts by weight: 120 to 140 parts of cement, 240 to 300 parts of sand, 440 to 500 parts of stone, 1.5 to 2 parts of water reducing agent solution, 0.3 to 0.5 part of fatty alcohol sulfate air entraining agent, 30 to 40 parts of fly ash, 10 to 15 parts of hydrophobic modified molecular sieve and 50 to 90 parts of water. The water reducing agent is formed by polymerizing unsaturated carboxylic acid, unsaturated sodium sulfonate, unsaturated thioether and (methyl) allyl polyoxyethylene ether. Hydroxyl groups on the surface and orifices are eliminated through hydrophobic modification of the molecular sieve, the water content of pores in the molecular sieve is reduced, bubbles which can be compressed and contain embedded free water are provided, expansion pressure and seepage force generated by freezing are relieved, the use amount of an air entraining agent is reduced, and the freezing resistance is improved in cooperation with the air entraining agent. The water reducing agent has an early strength effect, reaches or exceeds the freezing critical strength of the concrete as soon as possible, and improves the freezing resistance.
本发明提供一种耐久性管桩混凝土及所述管桩，所述混凝土包括如下重量份的原料：120‑140份水泥、240‑300份砂、440‑500份石、1.5‑2份减水剂溶液、0.3‑0.5份脂肪醇硫酸盐类引气剂、30‑40份粉煤灰、10‑15份疏水改性分子筛、50‑90份水；减水剂由不饱和羧酸、不饱和磺酸钠、不饱和硫醚、（甲基）烯丙基聚氧乙烯醚聚合而成。通过对分子筛疏水改性消除表面和孔口的羟基，降低分子筛内部孔洞水含量，提供可压缩和容纳自由水嵌入的气泡，缓解结冰产生的膨胀压力和渗透力，降低引气剂用量和协同引气剂提高抗冻性的作用；减水剂具有早强的作用，尽快达到或超过混凝土的受冻临界强度，提高抗冻性。
Durable tubular pile concrete and tubular pile
一种耐久性管桩混凝土及所述管桩
YAN HAOJIE (author) / WANG LIWEN (author) / LIAO XINLIANG (author) / WANG JIANPING (author) / MA QINGHAO (author)
2024-03-26
Patent
Electronic Resource
Chinese
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