(長沙鐵道學(xué)院隧道與地下工程研究所， 長沙 410075西南交通大學(xué)巖土所， 成都 610031
)
摘 要: 研究了粘土固化漿液結(jié)石體無側(cè)限抗壓強(qiáng)度qu的增長規(guī)律及其影響因素， 得出以下結(jié)論： 粘土固化漿液無側(cè)限抗壓強(qiáng)度隨時間的增加而增長， 其初期強(qiáng)度增長較快， 后期強(qiáng)度增長較慢； 增加水泥的加量將提高漿液的qu值， 固化劑A的加量有一最佳值(3%左右)； 因固化劑B是作為加快水泥水化反應(yīng)速度的催化劑而加入的， 所以， 固化劑B的加量以控制在5%以下為好。 此外， 還簡單分析了粘土固化漿液結(jié)石體無側(cè)限抗壓強(qiáng)度與塑性強(qiáng)度存在差異的原因。
關(guān)鍵字: 粘土固化漿液 無側(cè)限抗壓強(qiáng)度 塑性強(qiáng)度
UNCONFINED COMPRESSIVE STRENGTH OF
CLAY-HARDENING GROUTS
（Institute of Tunnel and Underground Engineering, Changsha Railway University, Changsha 410075, P. R. China
Institute of Geotechnical Engineering,
Southwest Jiaotong University, Chengdu 610031, P. R. China
）
Abstract:The strength of grouts is a very important performance parameter during grouting. The affecting factors and growing rule of unconfined compressive strength of clay-hardening Grouts (CHG) were studied. The results showed that the unconfined compressive strength of CHG increases with the increasing of time; the early strength increases quickly, and the late strength increases slowly; increasing cement amount will increase the strength of CHG; the best amount of solidified agent (SA) A is 3%, the amount of SA B should be controlled under 5% because SA B is added into CHG as a catalyst increasing action rate of cement hydration. And then the reason that causes the difference between unconfined compressive strength and plastic strength of CHG was simply analyzed.
Key words: clay-hardening grouts (CHG) unconfined compressive strength plastic strength
