Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Concrete anti-freezing aggregate, anti-freezing concrete and preparation method
The invention relates to concrete anti-freezing aggregate, anti-freezing concrete and a preparation method, and the concrete anti-freezing aggregate is prepared from the following components in parts by mass: 1 part of a reinforcing agent, 3-4 parts of modified oak fine aggregate and 1-2 parts of water, the modified oak fine aggregate is at least partially esterified oak fine aggregate; the reinforcing agent comprises the following components in percentage by mass: 20-40% of sodium nitrite, 45-55% of calcium oxide powder, 0-2% of a powder water reducer, 8-15% of an early strength agent and 2-10% of soluble carbonate. The pre-wetted modified oak fine aggregate can release a reinforcing agent aqueous solution into concrete pores in the later period, the internal humidity of the concrete can be kept, setting and hardening of the concrete are facilitated, the freezing point of water in the concrete is reduced, and in the negative temperature environment, the interior of the concrete is not prone to freezing, frost heaving damage is caused, and the anti-cracking performance is high. The oak is low in heat conductivity coefficient and good in heat preservation performance, heat generated in the concrete is not prone to loss, the mold entering temperature can be increased and maintained in cold weather, and the early mechanical property of the concrete is effectively improved.
本申请涉及一种混凝土抗冻骨料、抗冻混凝土及制备方法，按照质量份数计，包括1份增强剂、3～4份改性橡木细骨料和1～2份水；改性橡木细骨料为至少部分羟基酯化的橡木细骨料；按照质量分数计，增强剂包括20％～40％亚硝酸钠、45％～55％氧化钙粉末、0～2％粉体减水剂、8％～15％早强剂和2％～10％可溶性碳酸盐。预湿的改性橡木细骨料后期会释放增强剂水溶液到混凝土毛细孔中，可保持混凝土的内部湿度，有利于混凝土的凝结硬化，降低混凝土中水的冰点，在负温环境下，混凝土内部不易结冰发生冻胀破坏，抗开裂性能强。橡木的导热系数低，保温性能好，混凝土内部产生的热量不容易散失，可以提高入模温度，并在寒冷气候下维持，有效提高混凝土早期力学性能。
Concrete anti-freezing aggregate, anti-freezing concrete and preparation method
The invention relates to concrete anti-freezing aggregate, anti-freezing concrete and a preparation method, and the concrete anti-freezing aggregate is prepared from the following components in parts by mass: 1 part of a reinforcing agent, 3-4 parts of modified oak fine aggregate and 1-2 parts of water, the modified oak fine aggregate is at least partially esterified oak fine aggregate; the reinforcing agent comprises the following components in percentage by mass: 20-40% of sodium nitrite, 45-55% of calcium oxide powder, 0-2% of a powder water reducer, 8-15% of an early strength agent and 2-10% of soluble carbonate. The pre-wetted modified oak fine aggregate can release a reinforcing agent aqueous solution into concrete pores in the later period, the internal humidity of the concrete can be kept, setting and hardening of the concrete are facilitated, the freezing point of water in the concrete is reduced, and in the negative temperature environment, the interior of the concrete is not prone to freezing, frost heaving damage is caused, and the anti-cracking performance is high. The oak is low in heat conductivity coefficient and good in heat preservation performance, heat generated in the concrete is not prone to loss, the mold entering temperature can be increased and maintained in cold weather, and the early mechanical property of the concrete is effectively improved.
本申请涉及一种混凝土抗冻骨料、抗冻混凝土及制备方法，按照质量份数计，包括1份增强剂、3～4份改性橡木细骨料和1～2份水；改性橡木细骨料为至少部分羟基酯化的橡木细骨料；按照质量分数计，增强剂包括20％～40％亚硝酸钠、45％～55％氧化钙粉末、0～2％粉体减水剂、8％～15％早强剂和2％～10％可溶性碳酸盐。预湿的改性橡木细骨料后期会释放增强剂水溶液到混凝土毛细孔中，可保持混凝土的内部湿度，有利于混凝土的凝结硬化，降低混凝土中水的冰点，在负温环境下，混凝土内部不易结冰发生冻胀破坏，抗开裂性能强。橡木的导热系数低，保温性能好，混凝土内部产生的热量不容易散失，可以提高入模温度，并在寒冷气候下维持，有效提高混凝土早期力学性能。
Concrete anti-freezing aggregate, anti-freezing concrete and preparation method
一种混凝土抗冻骨料、抗冻混凝土及制备方法
WU BAIHAN (Autor:in) / WANG HUAQIANG (Autor:in) / LI LEI (Autor:in) / LONG YONG (Autor:in) / NONG DAIPEI (Autor:in) / MAO WEIQI (Autor:in) / PENG XUMIN (Autor:in) / MA MENGYANG (Autor:in) / WANG SHUO (Autor:in) / GAI KEYU (Autor:in)
05.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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