气泡混合轻质土是解决公路路基病害的一种新兴技术.通过水泥、碱激发火山灰胶凝材料,以及高岭土的配比试验,制备出三种强度高、耐盐蚀的固化剂;然后以三种固化剂和南疆当地风积沙为掺料,通过不同的配合比试验,研究一种既满足强度要求,又符合经济性原则的耐盐蚀的气泡混合轻质风积沙土.经试验研究和对比发现:当水泥、碱激发火山灰胶凝材料按6:4的比例制备为固化剂时,抗压强度能够提高18.2%;同时,抗氯离子和硫酸根离子的能力得到改善.固化剂掺量为260 kg时,X2与风积沙制备的气泡混合轻质风积沙土抗压强度可达2.96 MPa;X3与风积沙的抗压强度为2.88 MPa,XG1与风积沙的抗压强度为2.67 MPa;从强度和微观分析得出自制固化剂X2与风积沙的结合效果较好,为风积沙的资源化利用提供了新的途径.%Foamed cement banking is a new technology to solve roadbed disease. Three kinds of curing agents with high strength and corrosion resistance were prepared by the cement,alkali ash gelled material and ratio of kao-lin test. Then three kinds of curing agent,local aeolian sand were used as the admixture to test,research on a kind of foamed cement banking which can meet the requirement of strength and meet the principle of economy. The re-sults show that the compressive strength can be increased by 18.2% when the cement and alkali-activated volcanic ash cementitious material is prepared as the curing agent in the ratio of 6:4,and the ability of resisting chloride ion and sulfate ion is improved. When curing agent content is 260 kg,the compressive strength of foamed cement bank-ing mixed with curing agent X2and aeolian sand is 2.96 MPa,the compressive strength of X3and aeolian sand is 2.88 MPa,and the strength of XG1and aeolian sand is 2.67 MPa;From the strength and micro analysis it is con-cluded that the combination of self-made curing agent X2and aeolian sand effect is good, for the recycling use of aeolian sand provides a new way.
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