【摘要】 用测定雷竹 水泥 水系统水化热的方法,研究了雷竹Phyllostachyspraecox与水泥的相适应性,并以阻凝系数与适合系数来评定其相适应性。结果表明:①雷竹对水泥的水化过程有很大的阻碍作用,对2种水泥的阻凝系数均为∞;适合系数均小于68%。②化学助剂能明显地改善雷竹与水泥的相适应性,从选择的4种化学助剂来看,其作用效果依次为CaCl2>BaCl2>NaCl>Na2SiO3。③预处理可明显改善雷竹与水泥的相适应性,雷竹用冷水、热水与10g·kg-1的NaOH溶液预处理后加入化学助剂CaCl2,对425号水泥的阻凝系数依次为13 0%,10 0%,9 5%;对525号水泥则为11 0%,9 0%,7 3%;而适合系数均大于68%。④不同水泥对雷竹和水泥混合物水化特性也有影响,高标号的525号水泥与雷竹的相适应性比低标号的425号水泥与雷竹的相适应强。图2表4参18更多还原

【Abstract】 .The compatibility of Phyllostachys praecox and cement is studied with the method of measuring hydration in the P.praecox wood-cement-water system.The inhibitory index I and the compatibility factor C_A are applied to evaluation of its compatibility.The results show that P.praecox wood has serious inhibition on the hydration of cements.The inhibitory index I and the compatibility factor C_A to two cements are ∞ and less than 68% respectively.Additives can improve compatibility of P.praecox wood and cements.Additives effects are as follows:CaCl₂>BaCl₂>NaCl>Na₂SiO₃.Pretreatments can also improve its compatibility with cements.Adding CaCl₂ after pretreatment with cold water,hot water and 10 g·kg^-1NaOH,the inhibitory indexes I to grade 425 cement are 13.0%,10.0%,9.5% respectively;to grade 525 cement are 11.0%,9.0%,7.3%;the compatibility factors C_A to two kinds of cement are both greater than 68%.Different cements have different effects on the hydration characteristics of P.praecox wood-cement-water mixture.The compatibility between P.praecox and grade 525 cement is better than that between P.praecox and grade 425 cement.更多还原