CAJ | 학술논문

为研究闽南地区常见土体制作的水泥土的工程特性，将淤泥、粉质黏土和粉砂分别与一定量的水泥浆混合制备水泥土试样，测定水泥土重度、强度、压缩模量、应力一应变及渗透系数。结果表明：三种土体制备的水泥土重度比原状土提高1％-7％，水泥土搅拌桩形成的复合地基不会对下部土体产生过大的附加应力和附加沉降。当水泥掺量由5％增大至20％时。淤泥、粉质黏土和粉砂制备的水泥土强度依次增大，增大幅度为原状土的1～2倍；水泥弹性模量也增大，与水泥掺量近似指数关系；渗透系数减小。当荷载较小时，水泥土应力一应变近似直线关系，当荷载超过了极限强度时，水泥土进入塑性变形阶段，破坏时存在残余应变。水泥土龄期由28d增至60d，其强度增长12％～36％。该研究为水泥土工程提供了基础数据。
위연구민남지구상견토체제작적수니토적공정특성，장어니、분질점토화분사분별여일정량적수니장혼합제비수니토시양，측정수니토중도、강도、압축모량、응력일응변급삼투계수。결과표명：삼충토체제비적수니토중도비원상토제고1％-7％，수니토교반장형성적복합지기불회대하부토체산생과대적부가응력화부가침강。당수니참량유5％증대지20％시。어니、분질점토화분사제비적수니토강도의차증대，증대폭도위원상토적1～2배；수니탄성모량야증대，여수니참량근사지수관계；삼투계수감소。당하재교소시，수니토응력일응변근사직선관계，당하재초과료겁한강도시，수니토진입소성변형계단，파배시존재잔여응변。수니토령기유28d증지60d，기강도증장12％～36％。해연구위수니토공정제공료기출수거。
This paper is an effort to investigate the properties of three common kinds of cement-soil by adding a certain amount of cement to mud, silt clay and silt sand common at South of Fujian Province, respectively, to make the cement-soil samples and measure the engineering properties of cement-soil. The result shows that cement-soil made from mud, silt clay, and silt sand has the gravity 1% -7% higher than does original soil, thus preventing cement mixing pile from producing excessive additional stress and additional settlement. A 5% to 20% increases in cement content trigger the increases in strength of cement-soil made from mud, silt clay and silt sand them, with the range going 1 -2 times as much as the original soil. The elastic modulus of cement-soil increases with cement content, with exponent relation- ship, while the permeability coefficient decreases. A smaller load gives rises to approximate linear rela- tionship in the stress-strain of cement-soil. The load greater than the uhimate strength results in the cement-soil's entering into plastic deformation stage, leaving residual strain due to destruction. A 28 d to 60 d increase in cement soil age shows a 12% to 36% increase in its strength. The study could provide the basic data for the cement-soil engineering.