I-Hydroxypropyl methylcellulose HPMC inokuphucula kakhulu ukugcinwa kwamanzi kwi-mortar. Xa isixa esongeziweyo siyi-0.02%, izinga lokugcina amanzi liya kunyuka ukusuka kwi-83% ukuya kwi-88%; isixa esongeziweyo yi-0.2%, izinga lokugcina amanzi yi-97%. Kwangaxeshanye, isixa esincinci se-HPMC sikwanciphisa kakhulu ukuqhekeka kunye nezinga lokopha kwe-mortar, nto leyo ebonisa ukuba i-HPMC ayinakuphucula kuphela ukugcinwa kwamanzi kwi-mortar, kodwa ikwaphucula kakhulu ukuhambelana kwe-mortar, nto leyo eluncedo kakhulu ekulinganeni komgangatho wokwakhiwa kwe-mortar.
Nangona kunjalo, i-hydroxypropyl methylcellulose HPMC inefuthe elibi kumandla okugoba kunye namandla okucinezela kwe-mortar. Ngokunyuka kobuninzi be-HPMC, amandla okugoba kunye namandla okucinezela kwe-mortar ayancipha kancinci kancinci. Kwangaxeshanye, i-HPMC inokunyusa amandla okugoba kwe-mortar. Xa ubungakanani be-HPMC bungaphantsi kwe-0.1%, amandla okugoba kwe-mortar ayanda ngokunyuka komthamo we-HPMC. Xa ubungakanani budlula i-0.1%, amandla okugoba awayi kwanda kakhulu. I-Hydroxypropyl Methyl
I-Cellulose HPMC ikwanyusa amandla e-bond ye-mortar. I-0.2% HPMC yonyusa amandla e-bond ye-mortar ukusuka kwi-0.72 MPa ukuya kwi-1.16 MPa.
Izifundo zibonise ukuba i-HPMC inokwandisa kakhulu ixesha lokuvulwa kwe-mortar, ukuze ubungakanani be-mortar ewayo buncitshiswe kakhulu, nto leyo eluncedo kakhulu ekwakheni i-tile bonding. Xa i-HPMC ingaxutywanga, amandla e-bond ye-mortar ancipha ukusuka kwi-0.72 MPa ukuya kwi-0.54 MPa emva kwemizuzu engama-20, kwaye amandla e-bond ye-mortar ene-0.05% kunye ne-0.1% HPMC aya kuba yi-0.8 MPa kunye ne-0.84 MPa emva kwemizuzu engama-20. Xa i-HPMC ingaxutywanga, ukutyibilika kwe-mortar yi-5.5mm. Ngokunyuka komxholo we-HPMC, ukutyibilika kuya kuncipha rhoqo. Xa umthamo uyi-0.2%, ukutyibilika kwe-mortar kuncitshiswa ukuya kwi-2.1mm.
Ixesha lokuthumela: Matshi-03-2022