Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Lining compensation concrete material for preventing vault cavity of tunnel and process of lining compensation concrete material
The invention discloses a lining compensation concrete material for preventing vault cavities of a tunnel and a process of the lining compensation concrete material. The lining compensation concrete material comprises water, waste concrete reclaimed sand, cement, fly ash, silica fume, a water reducing agent, an expanding agent and PVA fibers. The invention relates to a concrete admixture, which is prepared from the following components in parts by weight: 0.48 to 0.52 part of water, 0.98 to 1.05 part of waste concrete reclaimed sand, 0.55 to 0.65 part of cement, 0.38 to 0.42 part of fly ash, 0.1 to 0.15 part of silica fume, 0.008 to 0.009 part of water reducing agent and 0.008 to 0.009 part of expanding agent. The concrete admixture is prepared from the following components in parts by weight: 0.45 to 0.65 part of water, 0.98 to 1.05 part of waste concrete reclaimed sand, 0.55 to 0.65 part of cement, 0.38 to 0.42 part of fly ash, 0.1 to 0.15 part of silica fume, 0.008 to 0.009 part of water reducing agent and 0.008 to 0.009 part of expanding agent. The volume fraction of the PVA fiber is 1%-1.05% of the volume of the slurry. According to the lining compensation concrete material for preventing the vault cavity of the tunnel and the process of the lining compensation concrete material, the grouting concrete material is improved, secondary grouting is carried out, the cavity generated after lining grouting can be effectively filled, no cavity is formed in the top end of the lining, and the service life of the lining is prolonged. Therefore, the possibility of tunnel diseases caused by holes can be reduced.
本发明公开了一种隧道防拱顶空洞的衬砌补偿混凝土材料及其工艺，包括水、废弃混凝土再生砂、水泥、粉煤灰、硅灰、减水剂、膨胀剂、PVA纤维；水按重量份数计为0.48‑0.52份、废弃混凝土再生砂按重量份数计为0.98‑1.05份、水泥按重量份数计为0.55‑0.65份、粉煤灰按重量份数计为0.38‑0.42份、硅灰按重量份数计为0.1‑0.15份，减水剂按重量份数计为0.008‑0.009份、膨胀剂按重量份数计为0.008‑0.009份；PVA纤维按体积分数计为浆体体积的1％‑1.05％。本发明采用上述一种隧道防拱顶空洞的衬砌补偿混凝土材料及其工艺，通过对注浆的混凝土材料进行改进，并进行了二次注浆，可对衬砌注浆后产生的空洞进行有效填补，不会使衬砌顶端形成空洞，进而可降低隧道因空洞产生病害的可能性。
Lining compensation concrete material for preventing vault cavity of tunnel and process of lining compensation concrete material
The invention discloses a lining compensation concrete material for preventing vault cavities of a tunnel and a process of the lining compensation concrete material. The lining compensation concrete material comprises water, waste concrete reclaimed sand, cement, fly ash, silica fume, a water reducing agent, an expanding agent and PVA fibers. The invention relates to a concrete admixture, which is prepared from the following components in parts by weight: 0.48 to 0.52 part of water, 0.98 to 1.05 part of waste concrete reclaimed sand, 0.55 to 0.65 part of cement, 0.38 to 0.42 part of fly ash, 0.1 to 0.15 part of silica fume, 0.008 to 0.009 part of water reducing agent and 0.008 to 0.009 part of expanding agent. The concrete admixture is prepared from the following components in parts by weight: 0.45 to 0.65 part of water, 0.98 to 1.05 part of waste concrete reclaimed sand, 0.55 to 0.65 part of cement, 0.38 to 0.42 part of fly ash, 0.1 to 0.15 part of silica fume, 0.008 to 0.009 part of water reducing agent and 0.008 to 0.009 part of expanding agent. The volume fraction of the PVA fiber is 1%-1.05% of the volume of the slurry. According to the lining compensation concrete material for preventing the vault cavity of the tunnel and the process of the lining compensation concrete material, the grouting concrete material is improved, secondary grouting is carried out, the cavity generated after lining grouting can be effectively filled, no cavity is formed in the top end of the lining, and the service life of the lining is prolonged. Therefore, the possibility of tunnel diseases caused by holes can be reduced.
本发明公开了一种隧道防拱顶空洞的衬砌补偿混凝土材料及其工艺，包括水、废弃混凝土再生砂、水泥、粉煤灰、硅灰、减水剂、膨胀剂、PVA纤维；水按重量份数计为0.48‑0.52份、废弃混凝土再生砂按重量份数计为0.98‑1.05份、水泥按重量份数计为0.55‑0.65份、粉煤灰按重量份数计为0.38‑0.42份、硅灰按重量份数计为0.1‑0.15份，减水剂按重量份数计为0.008‑0.009份、膨胀剂按重量份数计为0.008‑0.009份；PVA纤维按体积分数计为浆体体积的1％‑1.05％。本发明采用上述一种隧道防拱顶空洞的衬砌补偿混凝土材料及其工艺，通过对注浆的混凝土材料进行改进，并进行了二次注浆，可对衬砌注浆后产生的空洞进行有效填补，不会使衬砌顶端形成空洞，进而可降低隧道因空洞产生病害的可能性。
Lining compensation concrete material for preventing vault cavity of tunnel and process of lining compensation concrete material
一种隧道防拱顶空洞的衬砌补偿混凝土材料及其工艺
LIU LONGWEI (Autor:in) / DIAO GUOJUN (Autor:in) / ZANG BAOLI (Autor:in) / LI YANG (Autor:in) / SHAO LIYANG (Autor:in) / TAO QIQUAN (Autor:in) / PENG YAXIONG (Autor:in) / WEI LIANGWEN (Autor:in) / ZHANG HUAPENG (Autor:in) / QIN XIN (Autor:in)
26.03.2024
Patent
Elektronische Ressource
Chinesisch
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