A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Aeolian sand modified liquid fly ash abutment back filling material and construction method
The invention discloses an aeolian sand modified liquid fly ash abutment back filling material which mainly comprises aeolian sand, cement, fly ash and water, the mass ratio of the cement to the fly ash is 1: (10-12), the mass ratio of the aeolian sand to a cementing material (cement and fly ash) is 1: (3-5), and the water content is adjusted according to the working performance requirement of a liquid fly ash mixture. In the construction process, the compressive strength, the compressive resilience modulus and the 28d water immersion strength can be obviously improved while the construction workability is met, and the lightweight high-strength low-compressibility backfill material is a lightweight high-strength low-compressibility backfill material. The invention also provides a construction method of the aeolian sand modified liquid fly ash abutment back filling material. The construction method comprises the following steps: measuring and setting out; roughly excavating steps; foundation pit operation; finely excavating steps; edge covering soil is constructed; casting the aeolian sand modified liquid fly ash; and curing the mixture. The aeolian sand modified liquid fly ash abutment back filling technology is adopted, especially for desert roads lack of road building materials, aeolian sand resources can be reasonably utilized, local materials are used, the manufacturing cost is reduced, and meanwhile the construction quality is guaranteed.
本发明公开了一种风积沙改性液态粉煤灰台背填筑料，主要组成包括：风积沙、水泥、粉煤灰和水，其配合比为水泥：粉煤灰质量比1:10～12，风积沙：胶凝材料(水泥+粉煤灰)质量比为1:3～5，含水率按照液态粉煤灰混合料的工作性能要求调整。施工过程中，在满足施工和易性的同时，能够明显增加抗压强度、抗压回弹模量和28d浸水强度，是一种轻质高强且压缩性小的回填材料。本发明还提供了一种风积沙改性液态粉煤灰台背填筑料施工方法，包括以下步骤：测量放样；台阶粗开挖；基坑作业；台阶精开挖；包边土施工；风积沙改性液态粉煤灰浇筑；混合料养生。采用风积沙改性液态粉煤灰台背填筑技术，尤其在筑路材料匮乏的沙漠公路，能够合理利用风积沙资源，实现就地取材、降低造价，同时保证施工质量。
Aeolian sand modified liquid fly ash abutment back filling material and construction method
The invention discloses an aeolian sand modified liquid fly ash abutment back filling material which mainly comprises aeolian sand, cement, fly ash and water, the mass ratio of the cement to the fly ash is 1: (10-12), the mass ratio of the aeolian sand to a cementing material (cement and fly ash) is 1: (3-5), and the water content is adjusted according to the working performance requirement of a liquid fly ash mixture. In the construction process, the compressive strength, the compressive resilience modulus and the 28d water immersion strength can be obviously improved while the construction workability is met, and the lightweight high-strength low-compressibility backfill material is a lightweight high-strength low-compressibility backfill material. The invention also provides a construction method of the aeolian sand modified liquid fly ash abutment back filling material. The construction method comprises the following steps: measuring and setting out; roughly excavating steps; foundation pit operation; finely excavating steps; edge covering soil is constructed; casting the aeolian sand modified liquid fly ash; and curing the mixture. The aeolian sand modified liquid fly ash abutment back filling technology is adopted, especially for desert roads lack of road building materials, aeolian sand resources can be reasonably utilized, local materials are used, the manufacturing cost is reduced, and meanwhile the construction quality is guaranteed.
本发明公开了一种风积沙改性液态粉煤灰台背填筑料，主要组成包括：风积沙、水泥、粉煤灰和水，其配合比为水泥：粉煤灰质量比1:10～12，风积沙：胶凝材料(水泥+粉煤灰)质量比为1:3～5，含水率按照液态粉煤灰混合料的工作性能要求调整。施工过程中，在满足施工和易性的同时，能够明显增加抗压强度、抗压回弹模量和28d浸水强度，是一种轻质高强且压缩性小的回填材料。本发明还提供了一种风积沙改性液态粉煤灰台背填筑料施工方法，包括以下步骤：测量放样；台阶粗开挖；基坑作业；台阶精开挖；包边土施工；风积沙改性液态粉煤灰浇筑；混合料养生。采用风积沙改性液态粉煤灰台背填筑技术，尤其在筑路材料匮乏的沙漠公路，能够合理利用风积沙资源，实现就地取材、降低造价，同时保证施工质量。
Aeolian sand modified liquid fly ash abutment back filling material and construction method
一种风积沙改性液态粉煤灰台背填筑料及施工方法
JIA XIAOLONG (author) / HUANG XIN (author) / MEN GUANGYU (author) / HUI YINGXIN (author) / WU YONGXIANG (author) / DING XINJIAN (author) / DOU ZHANSHUANG (author) / WU JIUQUAN (author) / WANG HAIFENG (author)
2022-05-10
Patent
Electronic Resource
Chinese
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