Foam Concrete Materials

furo kongiri zvinhu anoshandiswa munzvimbo dzakasiyana siyana dzeCivil engineering kudzidzira. Iwo anonyanya kushandiswa mu sub-base layers yezvivakwa kana nheyo zvimiro, sechinhu chekuzadza munzvimbo dzakavhurika senge dzisina kushandiswa pasi pevhu, uye mumadziro anodzivirira muviri uye pasi.

The furo kongiri zvinhu vane mabhenefiti akati wandei pane zvechinyakare simende-based zvinhu, senge yakaderera mvura-kune-simende ratio (w/c) uye yakakwirira kushanda. Ivo zvakare vane yakaderera yakawanda density uye yakawanda ductile, kuchengetedza zvinhu zvekupinza uye kuvandudza muviri uye mechanical zvinhu zvekongiri.

Fibers dzinogona kuwedzera kuchinjika kwesimba refoam kongiri, kunyanya nekutamisa zvinonetsa kuburikidza nebhiriji maitiro. Pamusoro pe, mafiber anogona kuvandudza hunhu hwepashure-kutsemuka kwefoam kongiri.

Mhando dzakasiyana-siyana dzemafibhi, zvakadai seshuga pulp fiber, kokonati fiber, uye coir fiber, inogona kuwedzerwa kune foam concrete. Pamusoro pe, kushandiswa kwemafibers aya kunogona kuderedza kuomeswa kwemvura uye kunwa kwemvura.

Synthetic foaming agents inoshandiswawo zvakanyanya mukugadzira foam kongiri. Izvo zvinowedzera zvinonyungudutswa mumvura zvisati zvabvongodzwa kuburikidza ne “cigar”. Vanogadzira kongiri yakagadzika furo, iyo inopomba zvakare.

Protein-based foaming agents inogona kusanganiswa nemvura, asi hazvina kukodzera kusanganiswa neplasticizers kana mvura inoderedza vamiririri. Apo mvura inoderedza agent kana plasticizer inosanganiswa neprotein-based foaming agent, musanganiswa hauna kugadzikana uye unowanzo kupatsanura panguva yekusanganiswa.

Microcracks inocherechedzwa muSEM mifananidzo yefoam kongiri samples yakafumurwa 800 degC nekuda kwekuparadzaniswa kwemvura yakasungwa nemakemikari uye hydration zvigadzirwa mukongiri matrix [18]. Kana CF yawedzerwa mukongiri, inoumba chimiro chemumbure wemuchadenga nekuperera kwakanaka.