混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
CHINA CONCRETE AND CEMENT PRODUCTS
2013年
8期
17-20
,共4页
碾压混凝土%橡胶粉%强度试验%含气量%密度
碾壓混凝土%橡膠粉%彊度試驗%含氣量%密度
년압혼응토%상효분%강도시험%함기량%밀도
Roller compacted concrete%Rubber powder%Strength test%Air content%Density
试验选用40目、80目、120目三种废旧轮胎橡胶粉按5%、10%、15%、20%以体积代砂掺入到基准碾压混凝土中，测定了橡胶混凝土密度、含气量、不同龄期的立方体抗压强度和28d轴心抗压强度。结果表明，掺入橡胶粉后，混凝土密度随掺入量增加而减小；含气量随橡胶粉掺量增加而增加；基准混凝土强度会降低，且随着橡胶粉掺入量的增加，强度降低明显；在相同橡胶粉掺量下，80目橡胶混凝土强度最大，120目橡胶混凝土强度次之，40目橡胶混凝土强度最低。
試驗選用40目、80目、120目三種廢舊輪胎橡膠粉按5%、10%、15%、20%以體積代砂摻入到基準碾壓混凝土中，測定瞭橡膠混凝土密度、含氣量、不同齡期的立方體抗壓彊度和28d軸心抗壓彊度。結果錶明，摻入橡膠粉後，混凝土密度隨摻入量增加而減小；含氣量隨橡膠粉摻量增加而增加；基準混凝土彊度會降低，且隨著橡膠粉摻入量的增加，彊度降低明顯；在相同橡膠粉摻量下，80目橡膠混凝土彊度最大，120目橡膠混凝土彊度次之，40目橡膠混凝土彊度最低。
시험선용40목、80목、120목삼충폐구륜태상효분안5%、10%、15%、20%이체적대사참입도기준년압혼응토중，측정료상효혼응토밀도、함기량、불동령기적립방체항압강도화28d축심항압강도。결과표명，참입상효분후，혼응토밀도수참입량증가이감소；함기량수상효분참량증가이증가；기준혼응토강도회강저，차수착상효분참입량적증가，강도강저명현；재상동상효분참량하，80목상효혼응토강도최대，120목상효혼응토강도차지，40목상효혼응토강도최저。
Three kinds of scrap tire rubber powder:40 mesh, 80 mesh and 120 mesh are chosen with 5%, 10%, 15%, 20% (volume ratio) replaced of sand into the benchmark roller compacted rubcrete. The density, air content, different age of cube compressive strength and 28d axial compressive strength of the rubber concrete are tested. The results show that after incorporating with rubber powder, the density of concrete decreases and air content increases with the increase of rubber powder's quantity, and the benchmark concrete strength decreases and decreases more with the more rubber pow-der. Under the same dosage of rubber powder, the 80 mesh rubber concrete has the largest strength, the 120 mesh rubber concrete next to it, and the 40 mesh rubber concrete has the lowest strength.
