| 摘要: |
| 【目的】研究不同结构对土壤固化剂集流面的抗压强度、吸水性和集流效率的影响，为土壤固化剂在雨水集蓄工程中的推广应用提供指导。【方法】在雨水集蓄工程示范的基础上，针对土壤固化剂集流面的不同施工工艺，采用抗压强度、吸水率和集流效率试验，对不同结构土壤固化剂集流面的力学与集流性能进行研究。【结果】 结构3（10 cm 6%固化土基层+5 cm土壤固化剂混凝土）集流面的吸水率和集流效率与结构8（15 cm水泥混凝土）集流面的相近，但其抗压强度最高；结构1（15 cm 12%干性固化土+固化剂浆液罩面）与结构2（15 cm 18%塑性纤维固化土+固化剂浆液罩面）集流面的表面处理一样，故其集流效率也相近，但是前者的抗压强度高于后者，吸水率低于后者；结构6（15 cm 12%干性水泥土+固化剂浆液罩面）集流面表面由于采用固化剂浆液进行收光处理，所以表面抗压强度和集流效率均高于结构7（15 cm 12%干性水泥土）集流面；结构5（表层掺粒径4～8 mm碎石+15 cm 12%干性固化土）集流面的抗压强度比仅由单纯的固化土构成的集流面高，但是集流效率却有所降低；结构4（40 cm×40 cm×5 cm 12%砌块固化土）集流面抗压强度较高，但是由于砌块之间有施工缝隙，集流效率最低。【结论】干性固化土的抗压强度高于塑性固化土；土壤固化剂集流面表面采用固化剂浆液进行收光处理，或在固化土基础上铺设一定厚度的土壤固化剂混凝土面层，不仅可增强抗压强度，提高集流效率，而且能够延长集流面的使用寿命。 |
| 关键词: 土壤固化剂 集流面 抗压强度 吸水率 集流效率 |
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| 基金项目:Mechanical and rainwater harvesting properties of catchments with different structures and soil stabilizers |
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| Mechanical and rainwater harvesting properties of catchments with different structures and soil stabilizers |
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| Abstract: |
| 【Objective】The aim was to study the influence of different structures and soil stabilizers on mechanical and rainwater harvesting properties of catchments and improve the utilization of soil stabilizers in rainwater harvesting.【Method】Using the tests of the compressive strength,water absorption and rainwater harvesting efficiency,the mechanical and harvesting properties of catchments with different structures and soil stabilizers were studied.【Result】The results showed that the structure No.3(10 cm 6% stabilized soil basements+5 cm concrete surface with soil stabilizer) had the similar rainwater harvesting efficiency as No.8(15 cm concrete with cement),but the former had the maximum compressive strength.The structures No.1(15 cm 12% dry stabilized soil+surface covered with slurry of soil stabilizer) and No.2(15 cm 18% plastic stabilized soil including fiber+surface covered with slurry of soil stabilizer) had similar treatments on surface,and similar rainwater harvesting efficiencies,but the former had the stronger strength and less water absorption.Because the surface of the structure No.6(15 cm 12% dry cemented soil+surface covered with slurry of soil stabilizer) had been treated with slurry of soil stabilizer,its compressive strength and rainwater harvesting efficiency were higher than the structure No.7(15 cm 12% dry cemented soil).Comparing with catchments made of only stabilized soil,the structure No.5(surface mixed size 4-8 mm gravel+15 cm 12% dry cemented soil) had higher compressive strength and less rainwater harvesting efficiency.The structure No.4(40 cm×40 cm×5 cm 12% brick of stabilized soil) had higher compressive strength,but the rainwater harvesting efficiency was the lowest among those different catchments due to the construction crack.【Conclusion】This study indicated that the compressive strength of dry stabilized soil was higher than plastic.Covering surface with the slurry or a certain concrete of soil stabilizer improved the compressive strength,increase rainwater harvesting efficiency and prolong the service life of the catchments. |
| Key words: soil stabilizer catchments compressive strength water absorption rainwater harvesting efficiency |
